CN110345292A - Motor-driven valve - Google Patents
Motor-driven valve Download PDFInfo
- Publication number
- CN110345292A CN110345292A CN201910204636.0A CN201910204636A CN110345292A CN 110345292 A CN110345292 A CN 110345292A CN 201910204636 A CN201910204636 A CN 201910204636A CN 110345292 A CN110345292 A CN 110345292A
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- China
- Prior art keywords
- mentioned
- spool
- spring support
- screw thread
- valve
- Prior art date
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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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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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
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
- F16K1/487—Attaching valve members to screw-spindles by a fixing element extending in the axial direction of the spindle, e.g. a screw
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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
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides motor-driven valve, in motor-driven valve, when moving to opening state when making valve port move to closed state from opening state by spool and from closed state, by preventing between the abutment end of the linking part of valve rod and the recess portion of spring support abutment end from touching the inclined-plane of recess portion, so as to avoid the obstacle of movement.Between recess portion (24R) of the extension (24T) of the linking part (14C) of outer thread spindle (14) Yu spring support component (24), the conical surface of the recess portion in the recess portion (24R) of spring support component (24) and the value of central axis angulation β are set as the conical surface of abutting end (14FE) and the value of central axis angulation α of the convex of external screw thread axis (14) or less.
Description
Technical field
The present invention relates to motor-driven valves used in refrigeration cycle etc..
Background technique
In refrigerating circulatory device, the motor-driven valve as expansion valve is configured between condenser and evaporator and is used in system
The flow control of cryogen etc., in motor-driven valve, it is ensured that the axle center precision of spool and valve port is especially important.This motor-driven valve passes through step
Into motor driven, the rotary motion of rotor is converted into straight line using the feed screw mechanism of externally threaded item and interior threaded part
Movement, makes spool separate and contact with valve port, for example, as shown in Patent Document 1, being configured to have as main member: valve master
Body, has valve base part, which is formed with the valve port being connected to valve chamber；Open and close the spool of valve port；With spool
In conjunction with tubular spool housing (in patent document 1 be referred to as valve guide part)；Linking with spool housing and having makes spool
And spool housing carries out the externally threaded valve rod of lifting moving；The stepper motor of rotation drive control is carried out to valve rod；And with
The interior threaded part (being referred to as valve rod bracket in patent document 1) that the external screw thread of valve rod is threadedly coupled.It is above-mentioned being configured at
The position of the lower end of the intracorporal valve rod of valve core shell be formed by the spring support that resin is provided between linking part and spool and
The valve spring to exert a force towards the direction separated with spool to spring support to the linking part of valve rod.The upper end of spool housing via
The linking part of the washer of its through hole and resin and above-mentioned valve rod links.It is formed in the top of above-mentioned spring support
Recess portion is formed as bearing to be formed in by the active force of valve spring the compression face of the abutment end of the convex of the linking part of valve rod.This
When, the center for being configured to the center of the compression face of spring support and the abutment end of valve rod is located at common central axis
On.In addition, the upper end of spool housing can be moved relatively relative to the linking part of valve rod along the radial direction of valve rod via washer
It is dynamic.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2017-161052 bulletin
Summary of the invention
In the motor-driven valve shown in patent document 1, in the case where spool is in off state the valve port of valve body, spool
Shell and spool decline together with valve rod, and the end of spool is inserted in valve port, and spool is abutted with valve seat.In spool and valve seat
After abutting, valve rod further resists the active force of valve spring via spring support and rotates decline, so that spool is pressed against
On valve seat.Spool makes the valve port of valve body reliably become closed state as a result,.At this point, the recess portion one of above-mentioned spring support
The rotation that the abutment end of valve rod is born on side shrinks valve spring on one side, and it is possible to be easy to happen the twist and warping of valve spring, spring
Bracket is tilted relative to the abutment end of valve rod.Further, due to the radial gap between valve rod and spool housing and washer, valve
Backlash etc. between the external screw thread of bar and the internal screw thread of interior threaded part, there are the recess portions of the axis deviation spring support of valve rod
The case where central axis.
In addition, spool make valve body valve port become opening state in the case where, when from valve land in the shape of valve seat
When state starts spool and separates with valve seat, when valve rod rotates and rises, pass through the restoring force of valve spring, the recess portion of spring support is on one side
The abutment end for being pressed against the valve rod of rotation separates spool with valve seat on one side.The valve port of valve body becomes opening state as a result,.
It is identical as when becoming above-mentioned closed state at this point, when valve spring is extended from compressive state, due to the twist and warping of valve spring,
There is a possibility that spring support is tilted relative to the abutment end of valve rod.Further, due between valve rod and spool housing and washer
Backlash etc. between radial gap, the external screw thread of valve rod and the internal screw thread of interior threaded part, there are the axis deviation bullets of valve rod
The case where central axis of the recess portion of spring bracket.
In this way, when spool makes the valve port of valve body become closed state or opening state, when generation spring support phase
When axis deviation for the inclination of the abutment end of valve rod, valve rod relative to the recess portion of spring support, there is the company as valve rod
The abutment end of the convex of knot touches the case where state of the conical surface of the recess portion of spring support.
The inclined state of linking part as the posture of spring support relative to valve rod as a result, it is possible to make spring load
And the thrust of threaded stem cannot be along central axial direction with regular load transmission.Furthermore, it is possible to make spool relative to
Valve seat is not state of normally taking a seat, between valve rod and spring support, between spool and valve seat, between spool housing and washer
Resistance to sliding between inner circumferential of periphery and interior threaded part of resistance to sliding and spool housing etc. increases, thus electric
The movement of dynamic valve generates obstacle.
In order to solve the problems, such as, it is also considered that making the shape of the abutment end of the convex of the linking part of valve rod becomes
Hemispherical shape.However, hemispherical abutment end is point contact relative to the compression face of spring support, so the bullet of resin
The abrasion loss of the compression face of spring bracket may be bigger, because rather than good countermeasure.
Problem more than consideration, the purpose of the present invention is to provide a kind of motor-driven valve, which is passing through spool
When moving to opening state when valve port moves to closed state from opening state and from closed state, by preventing abutment end in valve
The abutment end of the linking part of bar and the recess portion of spring support touch the inclined-plane of recess portion each other, so as to avoid acting
Obstacle.
In order to achieve the above purpose, motor-driven valve of the invention is characterized in that having: valve body portion, has and first
The first port of access connection and the second port being connect with alternate path, and have and the first port and second port company
Incorporating section logical and that spool unit is stored in a manner of it can move, the spool unit include carrying out beating on and off to second port
The spool for closing control forms；And spool unit driving mechanism, to adjust the front end by spool and the periphery of second port
Between fluid flow mode, so that spool unit carry out second port opening and closing the movement of control, spool
Unit driving mechanism is that the rotary motion of rotor is converted to the mechanism of linear motion, valve by external screw thread axis and interior threaded part
Core unit further include: spool housing, the external screw thread axis via washer in a manner of it can move and in spool unit driving mechanism
Connecting end connection and keep spool；Spring support component, is configured in spool housing；And spring members, direction and spool
Isolated direction exerts a force to spring support component, in the linking part of outer thread spindle and the abutting of the spring support component opposed with its
Either side in portion is formed with the abutment end of convex, is formed with the recess portion as the compression face for bearing abutment end in another party,
The conical surface of the value and the recess portion formed as compression face of the conical surface in the abutment end of convex and central axis angulation α with
The relationship of the value of central axis angulation β is set as α >=β.
Angle beta also can be set as 45 ° or less.The abutment end of convex can also be formed in the linking part of external screw thread axis, recessed
Portion as the abutment end for bearing external screw thread axis compression face and be formed in the top of spring support component, alternatively, the abutting of convex
End can also be formed in the top of spring support component, recess portion as the abutment end of receiving spring support component compression face and shape
At in the linking part of external screw thread axis.
In addition, the longitudinal section shape of the abutment end of convex can also the substantially frustum of a cone, also, as the recessed of compression face
The value that the depth in portion also can be set as the radius of corner at the angle than the most small diameter portion of the abutment end of convex is big.
Effect of the invention is as follows.
Related motor-driven valve according to the present invention, what the apex angle in the abutment end of convex obtained after being halved by central axis
The pass of the value for the angle beta that the value of angle [alpha] and the cone angle of the recess portion formed as compression face obtain after being halved by central axis
System is set as α >=β, so the slave central axis between the linking part of external screw thread axis and spring support component is logical to radial movement
The conical surface for crossing the abutment end of convex abuts the peripheral portion to form the conical surface of the recess portion of compression face of recess portion and is limited.As a result, can
It is enough to inhibit to move to opening state when making valve port move to closed state from opening state by spool and from closed state
When, during spool is abutted with valve seat, due to caused by the twist and warping because of valve spring the inclination of spring support, because of spool unit
The center of spring support caused by each portion and the gap of valve rod is relatively radially deviated relative to the linking part of valve rod
Caused by convex abutment end touch to be formed bear the convex abutment end compression face recess portion the conical surface.Therefore, energy
It is enough to inhibit to generate unnecessary resistance to sliding in the movement of valve rod and spool, so that it is guaranteed that spool and the normal of valve seat fall
Seat, and can be avoided motor-driven valve movement generate obstacle the case where.
Detailed description of the invention
Fig. 1 be partial enlargement indicate the company of external screw thread axis used in an example of motor-driven valve according to the present invention
Tie end, spring support component and washer a part cross-sectional view.
Fig. 2 is that partial enlargement indicates used in an example of motor-driven valve according to the present invention as another example
External screw thread axis connection end, spring support component and washer a part cross-sectional view.
Fig. 3 is the integrally-built cross-sectional view for schematically showing an example of motor-driven valve according to the present invention.
Fig. 4 is the dynamic of the connection end for the external screw thread axis in example shown in Fig. 3, spring support component and washer
The partial sectional view explained.
In figure:
12-guiding support；12B-internal thread part；12FMS-internal screw thread；14-external screw thread axis；14C-connecting end
Portion；14F-extension；14FE-abutting end；16-washers；18-spool housings；22-helical springs；24-spring supports
Component；24R-recess portion；24T-extension；26-spools；30-valve body portions；30V-valve seat；30Va-valve port.
Specific embodiment
Fig. 3 indicates the structure of an example of motor-driven valve according to the present invention together with effective pipe.
In Fig. 3, motor-driven valve is for example configured between the condenser and evaporator in air-conditioning device as expansion valve.It is electronic
Valve is configured to include: the valve driving portion for being configured in cylindric rotor case 20 and driving aftermentioned spool unit；With rotor
The end of shell 20 links and has the valve body portion 30 of the valve seat 30V opened and closed by the front end of spool 26；And match
It is placed in spool unit made of the interior and spool 26 including opening and closing valve seat 30V in valve body portion 30.
Valve driving portion is configured to include: the external screw thread axis 14 for making spool unit lifting moving as main member；With shape
The guiding support (interior threaded part) 12 of the internal thread part 12B of the chimeric internal screw thread 12FMS of Cheng Youyu external screw thread axis 14 and it is
Be fixed on valve body portion 30 and guide spool unit can lifting moving guiding support 12；It is fixed on external screw thread axis 14
Guide shaft portion 14A and the rotor 10 that supports and be magnetized in a manner of it can rotate；And it is configured at the periphery of rotor case 20
Portion and the stator coil (not shown) for rotating rotor 10.
Guiding support 12 has guide surface, cylindric spool housing 18 of the guide surface to spool unit in inner peripheral portion
Guiding can lifting moving on one side rotate while.
External screw thread axis 14 includes: the external thread part 14B chimeric with the internal screw thread 12FMS of internal thread part 12B；It is formed in outer spiral shell
The lower end of line portion 14B and the linking part 14C engaged via washer 16 with the periphery through hole 18a of spool housing 18；And it is formed
Guide shaft portion 14A in the upper end of external thread part 14B.Guide shaft portion 14A is rotatably supported in cylindrical portion 20C, should
Cylindrical portion 20C is prominent towards guiding support 12 along central axis from the top in rotor case 20.
Be formed with spiral guide portion 11 in the peripheral part of cylindrical portion 20C, the spiral guide portion 11 to movable limit film 13 into
It is mobile that row guidance makes it rotate the central axial direction of an edge cylindrical portion 20C on one side.One end of movable limit film 13 is engaging in
The protrusion of rotor 10.In addition, being respectively arranged with movable limit film 13 in the top portion of cylindrical portion 20C and lowest end
Rotation stop part 20US and 20LS.As a result, when movable limit film 13 is abutted with rotation stop part 20US and 20LS, movable limit film 13
With the defined valve closing position of aftermentioned spool 26 and scheduled rotation angle corresponding with defined valve opening (standard-sized sheet) position
Stop.
Above-mentioned valve driving portion is based on the driving pulse supplied by the drive control part that the illustration is omitted to stator coil
Signal is controlled.
Spool unit is configured to include: the needle for opening and closing the valve port 30Va of aftermentioned valve seat 30V as main member
The spool 26 of shape；The extension 14F of the linking part 14C of external screw thread axis 14 is ordinatedly set to be fastened on spool with the washer 16 of resin
The spring support component 24 of the columned resin of the inner periphery of the open end 18T of shell 18；It is configured at spring support portion
The spring support of one end 26EA of the extension 24T and spool 26 of part 24 is between cyclic annular flat part and being separated from each other twocouese
Direction force helical spring 22；And one end 26EA of storage spring support component 24, helical spring 22 and spool 26
Cylindric spool housing 18.
The peripheral part that one end close to valve seat 30V of cylindric spool housing 18 passes through one end 26EA of fixed spool 26
And it is closed.As shown in Fig. 4 partial enlargement, another party of cylindric spool housing 18 is the linking part with thread spindle 14
The open end 18T for the hole 18a that the reducing diameter part 14Cd of space washer 16 in 14C is passed through.Therefore, washer 16 is configured at spool
Between the end face of one side of the inner periphery and extension 14F of the open end 18T of shell 18.
The end face of a side of the reducing diameter part 14Cd and extension 14F of the linking part 14C of external screw thread axis 14 are integrally formed.Undergauge
The diameter of portion 14Cd is set as smaller than the internal diameter of hole 18a.In the inner peripheral surface of the hole 16a of washer 16 and the outer peripheral surface of reducing diameter part 14Cd
Between be formed with scheduled gap.As shown in Fig. 1 partial enlargement, tool is formed in the end face of another party of extension 14F
There is the abutting end 14FE of the substantially longitudinal section shape of circular cone shape.It abuts end 14FE and is connected to spring support component 24
Extension 24T's passes through the compression face substantially formed against the recess portion 24R of inverted cone mesa-shaped.
The most path φ DE for abutting end 14FE is for example set as about 1.8mm.Abut the conical surface and central axis of end 14FE
Line C angulation α (abut the apex angle of end 1/2) is for example set as the recess portion of the extension 24T of spring support component 24
The conical surface of compression face in 24R and central axis C angulation β (the 1/2 of the cone angle of compression face) or more and 75 ° it is below
Value.The diameter phi BE for the compression face for forming the bottom of recess portion 24R is for example set as about 2.0mm.Angle beta be for example set as 45 ° with
Under scheduled value.It is preferred that the depth Dp of recess portion 24R is for example set as the circle in the corner of the most small diameter portion than abutting end 14FE
The value of the radius of arc Ra is big.
The guide surface sliding contact of the peripheral part of cylindric spool housing 18 and above-mentioned guiding support 12 and with energy
The mode of enough lifting movings is supported.It is inserted in valve seat 30V's in the front end (needle portion) of the other end 26EB of spool 26 as a result,
Valve port 30Va, and after the outer peripheral surface in the needle portion of spool 26 is abutted with the opening portion periphery of valve port 30Va, when external screw thread axis 14
When continuing decline, helical spring 22 is by compression predetermined amount.As a result, as shown in figure 3, passing through the spring force of helical spring 22, spool
The outer peripheral surface in 26 needle portion is pressed against the opening portion periphery of valve port 30Va.The valve port 30Va of valve seat 30V is closed as a result,.
Valve body portion 30 is made by metal material, such as brass, stainless steel, aluminium alloy or resin material etc., in inside
The lower end of guiding support 12, the other end 26EB of spool 26 and cylindrical shape with the lower section for storing internal thread part 12B
The spool incorporating section 30A of spool housing 18.It is prominent towards valve port 30Va in the other end 26EB of spool incorporating section 30A, spool 26.
In addition, being formed in spool incorporating section 30A: being connected on the axis substantially orthogonal with the central axis of spool 26 as first
The first port 32P of one end of the connecting pipe 32 of access；And it is connected on the axis common with the central axis of spool 26
There is the valve seat 30V adjacent with second port 34P of one end of the connecting pipe 34 as alternate path.
In such a configuration, the stator coil of valve driving portion is controlled by the drive pulse signal from drive control part,
26 lifting moving of spool, the refrigerant as the fluid supplied by connecting pipe 32 or connecting pipe 34 is along arrow as a result,
Direction shown in head F or arrow R passes through the inner peripheral surface of the formation valve port 30Va in valve seat 30V and the other end 26EB of spool 26
Needle portion between the gap flow path that is formed passed through with defined flow.
In the needle portion of the other end 26EB by spool 26, above-mentioned valve port 30Va moves to closed state from open state
In the case of, until the outer peripheral surface in needle portion is abutted with the open edge of valve port 30Va, washer 16, spool housing 18 and spool 26 with
The rotation of external screw thread axis 14 synchronously declines while rotating.Later, the opening portion of the outer peripheral surface in needle portion and valve port 30Va week
Side abuts, so the rotation of spool 26 and spool housing 18 is suppressed when external screw thread axis 14 continues further to decline, such as schemes
Shown in 4 partial enlargements, the active force of the linking part 14C resistance helical spring 22 of the external screw thread axis 14 of rotation, with spring support portion
Part 24 declines predetermined amount together.At this point, the recess portion 24R of spring support component 24 bears the rotation of externally threaded abutment end 14FE
Power.
In addition, in the case where above-mentioned valve port 30Va moves to open state from closed state, in the other end of spool 26
During the outer peripheral surface in the needle portion of 26EB is abutted with the opening portion periphery of valve port 30Va, the rotation of spool 26 and spool housing 18
It is suppressed.When external screw thread axis 14, which rotates, to be risen, spring support component 24 is made by the restoring force of helical spring 22 on one side
Recess portion 24R bears the rotary force of the abutment end 14FE of external screw thread axis 14, on one side extends helical spring 22.Later, when needle portion
When outer peripheral surface is separated with the opening portion periphery of valve port 30Va, washer 16, spool housing 18 and spool 26 and external screw thread axis 14
Rotation synchronously rises while rotating, and valve port 30Va becomes open state as a result,.
In this way, moving to closed state from open state in above-mentioned valve port 30Va and moving to separation shape from closed state
When state, during the outer peripheral surface in needle portion is abutted with the opening portion periphery of valve port 30Va, when external screw thread axis 14 acts, spring support
The recess portion 24R of component 24 bears the rotary force of the abutment end 14F of external screw thread 14 while bearing the restoring force of helical spring 22,
So easily causing twist and warping in the contraction and elongation of helical spring 22.The abutment end 14F of external screw thread 14 is generated as a result,
The inclination of the recess portion 24R of spring support component 24, further, due between spool unit each section (external screw thread axis 14 with
Between spool housing 18, between external screw thread axis 14 and washer 16, between washer 16 and spool housing 18) radial gap, and
There are the central axis C of the linking part 14C of the external screw thread axis 14 of rotation relative to spring support component 24 central axis half
The case where diameter side is upwardly deviated from.
Even if such situation, it is set as external screw thread axis 14 also by by the angle beta of the recess portion 24R of spring support component 24
Convex abutment end angle [alpha] hereinafter, and as shown in Fig. 1 and Fig. 4, the cone of the periphery of the abutment end 14FE of external screw thread axis 14
Face is abutted with the periphery of the conical surface of the recess portion 24R of spring support component 24, further, even if being biased to masterpiece as radial outside
For external screw thread axis 14, also as shown in Fig. 1 and Fig. 4, the abutting end 14FE of the circular cone shape in linking part 14C is being formed in
It is abutted at abutting part TP in the recess portion 24R of the compression face of the extension 24T of spring support component 24, radius shown in arrow F
The reaction force acts in direction are in abutting end 14FE.
Avoid as a result, circular cone shape abutting end 14FE touch spring support component 24 recess portion 24R inclined-plane
The case where (conical surface).Therefore, it avoids following situation: being moved to out in the valve port 30Va of above-mentioned valve seat 30V from closed state
In the case where putting state, since the abutting end 14FE in the linking part 14C of external screw thread axis 14 touches the conical surface of recess portion 24R,
And lead to interference because of the conical surface for abutting end 14FE and recess portion 24R, the reducing diameter part 14Cd of the linking part 14C of external screw thread axis 14
The interference or spool housing 18 of the inner circumferential of the interference of the inner circumferential of periphery and washer 16, the periphery of washer 16 and spool housing 18
Outer peripheral surface and guiding support 12 the interference of inner peripheral surface etc. caused by unnecessary frictional resistance increase and abrasion
The increase of amount.In addition, also avoiding the valve port 30Va of the center axis deviation valve seat 30V of the spool 26 combined with spool housing 18
Central axis and deteriorate flow accuracy and inner peripheral portion of the needle portion relative to valve port 30Va of the other end 26EB of spool 26
Be biased to abut and the needle portion of the other end 26EB of spool 26 wear the case where.
Fig. 2 partial enlargement, which indicates to be used as used in an example of motor-driven valve shown in Fig. 3, moves the lifting of spool unit
The external screw thread axis 15 of another example of dynamic external screw thread axis, as spring support component another example spring support component
25 and washer 16.In Fig. 1 and example shown in Fig. 3, external screw thread axis 14 is in the end face of another party of extension 14F one
Body is formed with the abutting end 14FE with the substantially longitudinal section shape of circular cone shape, the extension of spring support component 24
24T has the recess portion 24R for being formed with and abutting the compression face that end 14FE is abutted, but replaces this, in Fig. 2, external screw thread axis 15
The extension 15F of linking part 15C there is recess portion 15R, recess portion 15R has and the extension that is formed in spring support component 25
The compression face for abutting end 25C and abutting of the circular cone shape of 25T.In addition, identically as example shown in Fig. 3, external screw thread axis 15
By the support (not shown) of the guiding support 12 with internal thread part 12B, internal thread part 12B is formed with embedding with external screw thread axis 15
The internal screw thread 12FMS of conjunction.The washer 16 for being located in the reducing diameter part 15Cd of external screw thread axis 15 is configured at the valve core shell that the illustration is omitted
Between the end face of one side of the inner periphery and extension 15F of the open end 18T of body 18.It is formed in stretching for spring support component 25
The abutting end 25C of the circular cone shape of portion 25T is exerted a force by helical spring 22 (not shown) towards recess portion 15R out.
The most path φ DE of the abutting end 25C of spring support component 25 is for example set as about 1.8mm.Spring support component
The conical surface of 25 abutting end 25C is for example set as outer with central axis C angulation α (abut the apex angle of end 1/2)
The conical surface and central axis C angulation β of compression face in the recess portion 15R of the extension 15F of the linking part 15C of thread spindle 15
More than (the 1/2 of the cone angle of compression face) and 75 ° of the following values.Form the straight of the compression face of the bottom of the recess portion 15R of extension 15F
Diameter φ BE is for example set as about 2.0mm.Angle beta is for example set as 45 ° of scheduled values below.It is preferred that the recess portion of extension 15F
The value that the depth Dp of 15R is for example set as the radius of the circular arc R a in the corner of the most small diameter portion than abutting end 25C is big.
In the example shown in Fig. 2, also by such set angle α and angle beta, obtain with it is above-mentioned shown in FIG. 1
The identical function and effect of example.
Claims (6)
1. a kind of motor-driven valve, which is characterized in that have:
Valve body portion has the first port that connect with the first access and the second port connecting with alternate path, and have and
The first port and second port connection and the incorporating section that spool unit is stored in a manner of it can move, above-mentioned spool unit
Spool including open and close control to above-mentioned second port forms；
Spool unit driving mechanism passes through the fluid between the front end of above-mentioned spool and the periphery of above-mentioned second port with adjustment
Flow mode, so that above-mentioned spool unit carry out above-mentioned second port opening and closing the movement of control,
Above-mentioned spool unit driving mechanism is that the rotary motion of rotor is converted to straight line by external screw thread axis and interior threaded part
The mechanism of movement,
Above-mentioned spool unit further include: spool housing, via washer can in a manner of enough movements with above-mentioned spool unit driving machine
The connecting end of external screw thread axis in structure links and keeps above-mentioned spool；Spring support component is configured in the spool housing；And
Spring members exert a force to the spring support component towards the direction separated with above-mentioned spool,
It is any one rectangular in the linking part of above-mentioned external screw thread axis and the abutting part of the above-mentioned spring support component opposed with its
At the abutment end for having convex, it is formed with the recess portion as the compression face for bearing above-mentioned abutment end in another party, above-mentioned convex is supported
Connect the conical surface in end and the value of central axis angulation α and the conical surface and the center of the recess portion formed as above-mentioned compression face
The relationship of the value of axis angulation β is set are as follows:
α≥β。
2. motor-driven valve according to claim 1, which is characterized in that
Above-mentioned angle beta is set as 45 ° or less.
3. motor-driven valve according to claim 1 or 2, which is characterized in that
The abutment end of above-mentioned convex is formed in the linking part of above-mentioned external screw thread axis, and recess portion is as the abutting for bearing above-mentioned external screw thread axis
The compression face at end and the top for being formed in above-mentioned spring support component.
4. motor-driven valve according to claim 1 or 2, which is characterized in that
The abutment end of above-mentioned convex is formed in the top of above-mentioned spring support component, and recess portion is as the above-mentioned spring support component of receiving
Abutment end compression face and be formed in the linking part of above-mentioned external screw thread axis.
5. motor-driven valve according to any one of claims 1 to 4, which is characterized in that
The longitudinal section shape of the abutment end of the above-mentioned convex substantially frustum of a cone.
6. motor-driven valve according to any one of claims 1 to 5, which is characterized in that
The depth of recess portion as above-mentioned compression face is set as the fillet in the corner of the most small diameter portion of the abutment end than above-mentioned convex
The value of radius is big.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018072564A JP6790012B2 (en) | 2018-04-04 | 2018-04-04 | Solenoid valve |
| JP2018-072564 | 2018-04-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110345292A true CN110345292A (en) | 2019-10-18 |
| CN110345292B CN110345292B (en) | 2021-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910204636.0A Active CN110345292B (en) | 2018-04-04 | 2019-03-18 | Electric valve |
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| Country | Link |
|---|---|
| JP (1) | JP6790012B2 (en) |
| CN (1) | CN110345292B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728122A (en) * | 2019-10-28 | 2021-04-30 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
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| JPS5833874U (en) * | 1981-08-28 | 1983-03-05 | 株式会社横河電機製作所 | servo valve |
| JP4220178B2 (en) * | 2001-09-03 | 2009-02-04 | 株式会社鷺宮製作所 | Motorized valve |
| DE102012011962B4 (en) * | 2012-06-18 | 2016-10-06 | Robert Bosch Gmbh | Valve attachment for a radiator control valve with electronic motor and spring and with or without expansion body |
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| CN101097014A (en) * | 2006-06-26 | 2008-01-02 | 上海康源电气有限公司 | Multi-path output controlling valve |
| CN2929225Y (en) * | 2006-06-30 | 2007-08-01 | 柳州华威电控燃油喷射系统技术有限公司 | Electromagnetic electric control diesel oil injector |
| CN102410394A (en) * | 2010-09-15 | 2012-04-11 | 株式会社不二工机 | Female Thread Part, Electric Valve And Manufacturing Method Of The Female Thread Part Used For The Electric Valve |
| CN203430633U (en) * | 2013-07-31 | 2014-02-12 | 瑞立集团瑞安汽车零部件有限公司 | Pressure regulation solenoid valve |
| CN104482276A (en) * | 2014-12-03 | 2015-04-01 | 吉林东光奥威汽车制动系统有限公司 | Bidirectional electromagnetic valve for automobile brake systems |
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| CN112728122A (en) * | 2019-10-28 | 2021-04-30 | 株式会社鹭宫制作所 | Electric valve and refrigeration cycle system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110345292B (en) | 2021-04-27 |
| JP2019183892A (en) | 2019-10-24 |
| JP6790012B2 (en) | 2020-11-25 |
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