CN109154407A - Valve gear - Google Patents
Valve gear Download PDFInfo
- Publication number
- CN109154407A CN109154407A CN201780031320.5A CN201780031320A CN109154407A CN 109154407 A CN109154407 A CN 109154407A CN 201780031320 A CN201780031320 A CN 201780031320A CN 109154407 A CN109154407 A CN 109154407A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- valve
- liner
- leaf spring
- blade part
- 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
Links
Classifications
-
- 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
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/08—Spindle sealings with stuffing-box ; Sealing rings with at least one ring provided with axially-protruding peripheral closing-lip
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
- Sliding Valves (AREA)
Abstract
In the motor-driven valve of pressure-balancing type, it is ensured that the leakproofness of leaf spring (41) and the L liner (45) of sealing (4).Sealing (4) are constituted by a pair of of leaf spring (41,41), a pair of L liner (45,45), stiffening plate (46).Leaf spring (41) are constituted by circular baseplate part (41a) and 12 pieces of blade parts (41b).The second bending section (41b2) of the first bending section (41b1) and outside are formed at blade part (41b).Abut the endpoint (P, P) of the second bending section (41b2) and the inner surface of the edge part (45b) for padding (45) L.The width [β 1] of the width [α 1'] and blade part (41b) that make clearance portion (41c) is roughly the same degree, and is [α 1'] < [β 1].24 vertex of the 24 side shapes formed by the endpoint P of the second bending section (41b2) are equably abutted with the inner surface of edge part (45b).
Description
Technical field
The present invention relates to valve gears used in refrigerating cycle etc., specifically, are related to valve gear, which has:
The moving parts of the valve of the flowing of fluid is controlled with moving along guide part；And it is led set on above-mentioned moving parts and being embedded in
Sealing into portion.
Background technique
In the past, as this valve gear, such as it is disclosed in Japanese Unexamined Patent Publication 2000-320711 bulletin (patent document
1), Japanese Unexamined Patent Publication 2012-229886 bulletin (patent document 2) and Japanese Unexamined Patent Publication 2015-25507 bulletin (patent text
Offer valve gear 3).
The valve gear of patent document 1 is the control that its flow is controlled the flowing of the twocouese of fluid in refrigerating cycle
Movable sleeve part (moving parts) is arranged in cylindric fixed sleeve part (guide part) in valve, movable by being provided to this
Valve port is opened and closed in the valve body of sleeve part.Also, by being set to being made of liner and spring for movable sleeve part
Sealing, to prevent the pressure fluid between the back pressure chamber of pressure balance and valve chamber from leaking.
The valve gear of patent document 2 is in refrigerating cycle by the temperature and refrigeration for exporting side line according to evaporator
The evaporating pressure of agent makes the aperture of valve port change to carry out the temperature expansion valve of degree of superheat control.Also, valve port is carried out
The spool (moving parts) of opening and closing is disposed in the pilot hole of valve casing, and is equipped with seal member, the seal member pair in spool
It imports between the equal pressure chamber and first of evaporating pressure and is sealed into pilot hole.In addition, seal member is by liner and leaf spring
It constitutes.
The valve gear of patent document 3 is the four-way switching valve switched in refrigerating cycle to the flow direction of refrigerant
(flow channel switching valve), the piston valve (moving parts) that can be moved in cylindric valve casing have the spool opposed with valve seat
(valve) makes piston valve mobile, so that flow path is switched over by the differential pressure to piston valve action refrigerant.In addition, piston
The piston of valve is made of the liner of the inner circumferential sliding contact with valve casing and toothed lock (leaf spring) etc..
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2000-320711 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2012-229886 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2015-25507 bulletin
Summary of the invention
Problems to be solved by the invention
Above-mentioned previous valve gear is the valve dress for moving the moving parts for having valve in cylindric guide part
It sets, and is the construction for making the fluid differential pressure set on the space of the sealing two sides of moving parts act on moving parts.Also,
The inner peripheral surface sliding contact of sealing and guide part.Therefore, in this valve gear, therefore, to assure that the leakproofness of sealing, and
And make sealing do not hindered relative to the resistance to sliding of guide part moving parts work degree.
In addition, in patent document 2, disclosing has with the leaf spring of the double wedge shape portion of radial extension, convex using this
The edge part that the elastic force in odontoid portion is padded to the pressing of the inner peripheral surface of pilot hole.However, due to the leaf spring in the patent document 2
Double wedge shape portion width it is smaller than the width in the gap between the double wedge shape portion, therefore, it is difficult to the edge part of liner apply
Enough elastic forces, still there is room for improvement in terms of leakproofness.If the pressing force additionally, there are leaf spring is too strong, phase is padded
The worry that becomes larger for the resistance to sliding of pilot hole and can not work.
Project of the invention be have have move along guide part control the moving parts of the valve of the flowing of fluid and
In moving parts and the valve gear of sealing that is embedded in guide part, make sealing relative to the leakproofness of guide part and
Resistance to sliding optimizes.
Solution for solving the problem
The valve gear of scheme 1 has: the guide part of cylindrical shape；Moving parts has the axis along above-mentioned guide part
The mobile valve to control the flowing of fluid；And sealing, it is set to above-mentioned moving parts and is embedded in above-mentioned guide part,
The differential pressure of the above-mentioned fluid in the space of the axis direction two sides of the above-mentioned sealing in above-mentioned guide part is set to act on above-mentioned movement
Component, above-mentioned valve gear are characterized in that above-mentioned sealing has: L liner, by connecing with the sliding of the inner peripheral surface of above-mentioned guide part
The edge part of touching and the base portion for being by movement described above component holding are constituted；And leaf spring, be disposed in the inside of above-mentioned L liner and to
The inner peripheral surface side of above-mentioned pilot hole presses above-mentioned edge part, above-mentioned leaf spring by be held in above-mentioned moving parts baseplate part and with
The radial periphery for being formed in aforesaid substrate portion and the more pieces of blade part structures that the above-mentioned edge part that above-mentioned L is padded is pressed from inside
At, and there is above-mentioned blade part to lean on the first bending section of the boundary part in aforesaid substrate portion and than above-mentioned first bending section
Outside and the second bending section abutted with above-mentioned edge part, above-mentioned blade part is 12 pieces to 20 pieces, moreover, the width of above-mentioned blade part
Degree is bigger than the width of the clearance portion between above-mentioned blade part, passes through the endpoint institute of above-mentioned second bending section of n pieces of above-mentioned blade part
At the vertex of the side 2n shape press the above-mentioned edge part of above-mentioned L liner.
The valve gear of scheme 2 valve gear according to scheme 1, which is characterized in that the width α ' of above-mentioned clearance portion and upper
The width beta for stating blade part has following relationship:
α′≤β≤2.1·α′。
The valve gear of scheme 3 valve gear according to scheme 1 or 2, which is characterized in that above-mentioned first bending section is formed in
The straight line portion of the side of above-mentioned blade part.
The valve gear of scheme 4 valve gear according to 1~3 any one of scheme, which is characterized in that above-mentioned blade part
The lower curtate of above-mentioned clearance portion between root becomes arc sections.
The valve gear of scheme 5 valve gear according to 1~4 any one of scheme, which is characterized in that above-mentioned blade part
Piece number is odd number piece.
The valve gear of scheme 6 valve gear according to 1~5 any one of scheme, which is characterized in that above-mentioned moving parts
It is made of spool and linking part, the aforesaid substrate portion of the above-mentioned base portion of above-mentioned L liner and above-mentioned leaf spring is by above-mentioned spool and upper
It states linking part to clamp, so that above-mentioned sealing is by movement described above component clamping.
The valve gear of scheme 7 valve gear according to 1~6 any one of scheme, which is characterized in that above-mentioned sealing tool
Standby a pair of above-mentioned leaf spring, a pair of above-mentioned L liner and the stiffening plate between above-mentioned a pair of L liner, above-mentioned a pair of L liner
It is configured to a pair of above-mentioned edge part outside towards each other on above-mentioned axis direction, and is clamped by the above-mentioned base portion of a pair above-mentioned
Stiffening plate, and above-mentioned sealing is by movement described above component clamping.
The effect of invention
According to the valve gear of scheme 1 or 2, leaf spring presses the edge of L liner on the vertex of the side 2n shape by n pieces of blade part
Portion.Each endpoint of second bending section and the inner surface of the edge part padded L correspondingly become substantially uniformly existing on circumference
Press points, and the width in the width over gap portion of blade part is big, and the piece number of blade part is 12 pieces to 20 pieces, therefore really
The width beta for protecting blade part, can obtain enough pressing forces relative to edge part, so that it is guaranteed that leakproofness.
According to the valve gear of scheme 3, other than the effect of scheme 1 or 2, even if sealing sliding when from L liner by
The stress that torsion etc. will not be applied to blade part to resistance, is also able to maintain that durability so even sliding repeatedly.
According to the valve gear of scheme 4, other than the effect of any one of scheme 1~3, since the lower curtate of clearance portion becomes circle
Arc portion, therefore crack etc. will not be generated from the clearance portion, so as to ensure the intensity of leaf spring.
According to the valve gear of scheme 5, other than the effect of any one of scheme 1~4, since the piece number of blade part is odd number
Piece, therefore become the blade part position abutted and the position not abutted and constructed relative to the asymmetric supported at three point of axis, it is close
Envelope portion is difficult to tilt in guide part, so as to equably be sealed.
According to the valve gear of scheme 6, other than the effect of any one of scheme 1~5, since sealing is by spool and connection
Portion's clamping, therefore sealing can be kept with simple construction relative to moving parts.
According to the valve gear of scheme 7, other than the effect of any one of scheme 1~6, a pair of of L of sealing can be utilized
Liner is reliably sealed between the inner peripheral surface of guide part and the outer peripheral surface of valve member.
Detailed description of the invention
Fig. 1 is the longitudinal sectional view of the closed valve state of the motor-driven valve of the valve gear as embodiments of the present invention.
Fig. 2 is the enlarged view of the main part of Fig. 1.
Fig. 3 is the top view of the unfolded state of the leaf spring of the first embodiment in embodiment.
Fig. 4 is the top view and cross-sectional view of the leaf spring of first embodiment and the assembled state of L liner.
Fig. 5 is the top view of the unfolded state of the leaf spring of the second embodiment in embodiment.
Fig. 6 is the top view and cross-sectional view of the leaf spring of second embodiment and the assembled state of L liner.
Fig. 7 is the top view of the unfolded state of the leaf spring of the 3rd embodiment in embodiment.
Fig. 8 is the top view and cross-sectional view of the leaf spring of 3rd embodiment and the assembled state of L liner.
Fig. 9 be illustrate first to 3rd embodiment leaf spring the first bending section and arc sections figure.
Specific embodiment
Hereinafter, being illustrated referring to embodiment of the attached drawing to valve gear of the invention.Fig. 1 is the valve as embodiment
The longitudinal sectional view of the closed valve state of the motor-driven valve of device, Fig. 2 are the enlarged view of the main part of Fig. 1.In addition, in the following description
In the concept of " upper and lower " with it is corresponding up and down in the attached drawing of Fig. 1.What the motor-driven valve of the embodiment had a substantially cylindrical shape
Valve casing 1 is formed with valve chamber 1A in valve casing 1.In addition, the junction block 11 being connected to from side with valve chamber 1A is installed in valve casing 1, and
Valve base part 13 is installed in lower end.It is formed with circular valve port 13a in the center of valve base part 13, and in valve port 13a
Opening around be formed with the face 13b that takes a seat of mortar shape.In addition, in valve base part 13, in a manner of being connected to valve port 13a, edge
The axis X direction of valve chamber 1A is equipped with junction block 12.
In valve chamber 1A, it is equipped with the hollow multistage cylindric valve guiding parts 2 from the upper end interpolation of valve casing 1.The valve
Guiding parts 2 is formed with: being center axle position in the guide part 21 of the cylindrical shape of the path of the side valve port 13a using axis X；Directly
The diameter central diameter cylindrical portion 22 bigger than guide part 21；And the mounting portion 23 of the major diameter of the upper end of insertion valve casing 1.In guide part 21
It is interior, the valve member 3 as the piston-like of " moving parts " can be movably equipped along axis X direction.Also, pass through valve member
3 a part is contained in valve guiding parts 2, to divide the interior space of valve guiding parts 2, is formed in valve guiding parts 2
Back pressure chamber 2A relative to valve member 3.
Valve member 3 be integrally formed into it is generally cylindrical shaped, the valve member 3 have the generally cylindrical spool as " valve "
The 3A and linking part 3B linked with aftermentioned stepper motor 7.Spool 3A has the circle of the cylindrical shape opposed with the face 13b that takes a seat
Column portion 31 and the lug boss 32 smaller than the diameter of cylindrical portion 31.Also, connecting hole 3a is formed in the center of spool 3A.Even
Knot 3B has and the connecting hole 3a of spool 3A is chimeric connection shaft 33 and identical as 32 diameter of lug boss and in substantial cylindrical
The lug boss 34 of shape.Also, spool 3A and linking part 3B between lug boss 32 and lug boss 34 to sandwich aftermentioned sealing 4
State fastening.I.e., the connection shaft 33 for having linking part 3B is fitted into the connecting hole 3a of spool 3A, by under connection shaft 33
End and the lower end of cylindrical portion 31 are welded, to mutually fasten.In addition, including in linking part 3B in connection shaft 33
The road the Jun Ya 3b that center extends from the side valve port 13a to top；And it is connected with the road the Jun Ya 3b of the longitudinal direction and is opened in back pressure chamber 2A
The road Kou Junya 3c.Also, valve port 13a is connected the road Jun Ya 3b, the 3c with back pressure chamber 2A.
Support member 5 is fastened with by flange metal parts 51 on the top of valve guiding parts 2, in the support member 5 along axis
Line X-direction is formed with insertion hole 52, and is formed with the via hole 53 that will be connected in insertion hole 52 and aftermentioned shell 72.It is inserting
Through-hole 52, can movably insert along axis X direction has cylindric vavle shelf 6, is fastened with valve member in the lower end of the vavle shelf 6
3.In addition, vavle shelf 6 engages with the armature spindle 71 of aftermentioned stepper motor 7.I.e., the flange part 71a of the lower end of armature spindle 71 with
The maintaining part 61 of the upper end of vavle shelf 6 sandwiches washer 62 together, and vavle shelf 6 can rotatably be sticked in the lower end of armature spindle 71.By
This, vavle shelf 6 and valve member 3 are supported with the state that can be rotatably hung by armature spindle 71.In addition, in vavle shelf 6, and
Compression helical spring 64 is equipped between spring support 63 and the lug boss 34 of linking part 3B.Outer spiral shell is formed in armature spindle 71
Line portion 71b, external thread part 71b and the internal thread part 5a for being formed in support member 5 are screwed.Armature spindle 71 is adjoint as a result,
It rotates and is moved along axis X direction.
Stepper motor 7 is installed on the top of valve casing 1.Stepper motor 7 is by above-mentioned armature spindle 71, shell 72, magnet rotor
73, stator coil 74 is constituted.In shell 72, it can be rotatably equipped with the magnet rotor 73 for making peripheral part be magnetized into multipole,
The magnet rotor 73 is fastened with armature spindle 71.In addition, the top part of shell 72 be equipped with the protrusion 73a of magnet rotor 73 interlock and
Limit the rotary position-limit mechanism 8 of the rotation of magnet rotor 73.In addition, being equipped with stator coil 74, stepping in the periphery of shell 72
Motor 7 is by giving pulse signal to stator coil 74, to make magnet rotor 73 rotate according to the umber of pulse.
According to above structure, led to by the driving of stepper motor 7 so that magnet rotor 73 and armature spindle 71 rotate
The feed screw mechanism of the external thread part 71b of armature spindle 71 and the internal thread part 5a of support member 5 are crossed, armature spindle 71 is along axis X
Direction is mobile.Valve member 3 is moved along axis X direction as a result, and valve member 3 is oriented to by the guide part 21 of valve guiding parts 2, thus
The valve member 3 disseats relative to the face 13b of taking a seat, takes a seat.It is opened and closed valve port 13a as a result,.Also, according to the axis X side of valve member 3
To position (lifting capacity) control the aperture of valve port 13a, thus flow of the control in the valve port 13a fluid flowed.In this way,
When valve member 3 is directed to the guiding of portion 21, sealing 4 is slided along the guide surface 21a of guide part 21.
The motor-driven valve of the embodiment flow into for fluid (refrigerant) from junction block 11 and flowed out from junction block 12 the
The second flowing (figure that one flowing (flowing of the solid arrow of Fig. 1) and fluid are flowed into from junction block 12 and flowed out from junction block 11
The flowing of 1 dotted arrow) both flowing control.The pressure for the valve chamber 1A being connected to junction block 11 is via valve member 3
The gap of cylindrical portion 31 and guide part 21 and the lower space for being imported into the sealing 4 in guide part 21.In addition, with junction block 12
The pressure of the valve port 13a of connection is imported into back pressure chamber 2A via the road Jun Ya 3b, 3c of valve member 3, and (top of sealing 4 is empty
Between).Sealing 4 is sealed between the lower space and back pressure chamber 2A of the sealing 4.
Also, when the first flowing, the low pressure of valve port 13a is imported into back pressure chamber 2A via the road Jun Ya 3b, 3c.In addition, the
When two flowings, the high pressure of the side valve port 13a is imported into back pressure chamber 2A via the road Jun Ya 3b, 3c.Therefore, from valve port 13a and back pressure
This two sides room 2A act on identical pressure to valve member 3.The power that the differential pressure of the high pressure and low pressure of fluid generates as a result, is in axis X
It is offset on direction relative to valve member 3, keeps pressure balance.
In this way, the motor-driven valve of embodiment has: the guide part 21 of cylindrical shape；It is moved along the axis X of guide part 21
Valve member 3 (moving parts)；And set on valve member 3 and the sealing 4 that is embedded in guide part 21.In addition, 3 institute of valve member
The cylindrical portion 31 (valve) having controls the flowing of the flow, i.e. fluid of fluid by controlling the aperture of valve port 13a.Also, it should
Motor-driven valve is that the differential pressure of the fluid in the space of axis X direction two sides of the sealing 4 in guide part 21 is made to act on valve member 3
Valve gear.
As shown in Fig. 2, sealing 4 includes: the leaf spring 41,41 for a pair of of the first embodiment being made of relatively thin metal plate；
A pair of of L liner 45,45 of fluororesin such as PTFE, PFA；And the circular stiffening plate 46 being made of metal plate.Also,
By sandwiching stiffening plate 46 between L liner 45,45, to be embedded in leaf spring 41,41 in the inside that L pads 45,45.In addition, plate
Spring 41, L liner 45, stiffening plate 46 have opening in center respectively, are through with the connection shaft 33 of linking part 3B in the opening, utilize
The lug boss 32 of the side spool 3A of valve member 3 and the lug boss 34 of the side linking part 3B press leaf spring 41,41, so that sealing 4 is pacified
Loaded on valve member 3.
L liner 45 is formed by machining, by circular base portion 45a and the outer circumferential direction from base portion 45a and the base
Portion 45a is constituted in the edge part 45b that setting is erect in the direction (axis X direction) of approximate right angle.Edge part 45b is directed to portion 21
Guide surface 21a pressing and the part of sliding contact, be sealed between the sealing 4 and guide surface 21a.Base portion 45a is
The part sandwiched by leaf spring 41 and stiffening plate 46 (and lug boss 32 or lug boss 34).
Leaf spring 41 is formed by the punch process of the metal plates such as SUS, by substantially circular baseplate part 41a and from base
The outer circumferential direction and baseplate part 41a of plate portion 41a erect the blade part 41b structure of setting in the direction (axis X direction) of approximate right angle
At.Blade part 41b is from the part of the edge part 45b of inside pressing L liner 45.Baseplate part 41a is by the base portion of L liner 45
The part that 45a and lug boss 32 or lug boss 34 sandwich.
Fig. 3 is the top view of the unfolded state of the leaf spring 41 of first embodiment, and Fig. 4 is the leaf spring 41 for indicating first embodiment
With the top view and partial sectional view of the assembled state of L liner 45, Fig. 4 (B) is the A-A section in Fig. 4 (A).As schemed
Show, leaf spring 41 has 12 pieces of blade part 41b in the periphery of baseplate part 41a.Blade part 41b is formed in baseplate part with radial
The periphery of 41a has 12 clearance portion 41c between adjacent blade part 41b, 41b respectively.Also, by shown in Fig. 3
First bending line and the second bending line distinguish bending blade part 41b, thus form the boundary of blade part 41b and baseplate part 41a
The first partial bending section 41b1 and the second bending section 41b2 than first bending section 41b1 in the outer part.In addition, Fig. 3 is indicated
Unfolded state shows the first bending section 41b1 and the second bending section 41b2 with heavy line.
Under the assembled state of leaf spring 41 shown in Fig. 4, the position of the first bending section 41b1 is from the state before assembling into one
Step is bent over, and leaf spring 41 is resisted the elastic recovering force of the leaf spring 41 and is assembled in L liner 45.Also, as shown in Fig. 4 (A), the
Endpoint P, P of the two side ends of two bending section 41b2 are abutted with the inner surface of the edge part 45b of L liner 45.In addition, the first bending section
41b1 is located on base portion 45a in the inner part (axis X side) in the edge part 45b than L liner 45.
Here, as shown in figure 3, by endpoint P, P of the second bending section of adjacent two 41b2,41b2 in clearance portion 41c
Distance be set as " width of clearance portion 41c ", the length of the second bending section 41b2 be set as " width of blade part 41b ".Also,
In this first embodiment, the width [α 1] of clearance portion 41c and the width [β 1] of blade part 41b are
α 1=0.77mm,
β 1=1.15mm=1.5 α 1,
And there is following relationship:
α1≤β1≤1.5·α1。
I.e., the width [α 1] of the width [β 1] of blade part 41b and clearance portion 41c become roughly the same degree.Also, leaf
For piece portion 41b in the first bending section 41b1 bending, therefore under the state of fig. 4, the width of clearance portion 41c becomes more slightly smaller than [α 1]
[α1′].Certainly [β 1] does not change.
Even if the width [α 1 '] of clearance portion 41c and the width [β 1] of blade part 41b also become in the state of the bending
Roughly the same degree.In this first embodiment,
α 1 '=0.58mm,
β 1=1.15mm=1.98 α 1 ',
And there is following relationship:
α1′≤β1≤2.1·α1′。
Also, the endpoint P of each second bending section 41b2 becomes 24 vertex of 24 side shapes, and the edge part with L liner 45
The inner surface of 45b abuts.12 pieces of blade part 41b are from inside substantially uniformly to pressing edge part on the outside of radial direction as a result,
45b.I.e., leaf spring 41 presses flanging edge 45b being in the multiple of 24 of substantially uniform position ring week.
Fig. 5 is the top view of the unfolded state of the leaf spring 42 of second embodiment, and Fig. 6 is the leaf spring 42 for indicating second embodiment
With the top view and partial sectional view of the assembled state of L liner 45, Fig. 6 (B) is the A-A section in Fig. 6 (A).In addition, with
Under the leaf spring 42 of second embodiment and the difference of leaf spring 41 of leaf spring 43 and first embodiment of 3rd embodiment be
The piece number of blade part and the width (length of the second bending section) of blade part, other constructions lead to first into 3rd embodiment
With.For example, the position (radius from center) of the first bending line first into 3rd embodiment it is identical.
The leaf spring 42 of the second embodiment has 15 pieces of blade part 42b in the periphery of baseplate part 42a.Blade part 42b with
The radial periphery for being formed in baseplate part 42a has 15 clearance portion 42c between adjacent blade part 42b, 42b respectively.And
And bending blade part 42b is distinguished by the first bending line shown in Fig. 5 and the second bending line, thus as shown in Fig. 6 (B), shape
In the outer part at the first bending section 42b1 of blade part 42b and the boundary part of baseplate part 42a and than first bending section 42b1
Second bending section 42b2.In addition, leaf spring 42 is assembled in L liner 45, and as shown in Fig. 6 (A), the two side ends of the second bending section 42b2
The inner surface of edge part 45b of endpoint P, P and L liner 45 abut.In addition, the first bending section 42b1 is on the side than L liner 45
Edge 45b is located on base portion 45a in the inner part (axis X side).
For the leaf spring 42 of the second embodiment, as shown in figure 5, the width [α 2] of clearance portion 42c and blade part 42b
Width [β 2] (length of the second bending section 42b2) is
α 2=0.76mm,
β 2=0.93mm=1.22 α 2,
And there is following relationship:
α2≤β2≤1.5·α2。
I.e., blade part 42b has the width of substantially [β 2], and clearance portion 42c has the width of substantially [α 2].Also, the leaf
The width of piece portion 42b and the width of clearance portion 42c become roughly the same degree.Also, blade part 42b is in the first bending section
42b1 bending, therefore in the state of Fig. 6, the width of clearance portion 42c becomes [α 2 '] more slightly smaller than [α 2].
Even if the width [α 2 '] of clearance portion 42c and the width [β 2] of blade part 42b also become in the state of the bending
Roughly the same degree.In this second embodiment,
α 2 '=0.45mm,
β 2=0.93mm=2.07 α 2 ',
And there is following relationship:
α2′≤β2≤2.1·α2′。
Also, the endpoint P of each second bending section 42b2 becomes 30 vertex of 30 side shapes, and the edge part with L liner 45
The inner surface of 45b abuts.15 pieces of blade part 42b are from inside substantially uniformly to pressing edge part on the outside of radial direction as a result,
45b.I.e., leaf spring 42 presses flanging edge 45b being in the multiple of 30 of substantially uniform position ring week.
Fig. 7 is the top view of the unfolded state of the leaf spring 43 of 3rd embodiment, and Fig. 8 is the leaf spring 43 for indicating 3rd embodiment
With the top view and partial sectional view of the assembled state of L liner 45, Fig. 8 (B) is the A-A section in Fig. 8 (A).
The leaf spring 43 of the 3rd embodiment has 20 pieces of blade part 43b in the periphery of baseplate part 43a.Blade part 43b with
The radial periphery for being formed in baseplate part 43a has 20 clearance portion 43c between adjacent blade part 43b, 43b respectively.And
And bending blade part 43b is distinguished by the first bending line shown in Fig. 7 and the second bending line, thus as shown in Fig. 8 (B), shape
In the outer part at the first bending section 43b1 of blade part 43b and the boundary part of baseplate part 43a and than first bending section 43b1
Second bending section 43b2.In addition, leaf spring 43 is assembled in L liner 45, and as shown in Fig. 8 (A), the two side ends of the second bending section 43b2
The inner surface of edge part 45b of endpoint P, P and L liner 45 abut.In addition, the first bending section 43b1 is on the side than L liner 45
Edge 45b is located on base portion 45a in the inner part (axis X side).
For the leaf spring 43 of the 3rd embodiment, as shown in fig. 7, the width [α 3] of clearance portion 43c and blade part 43b
Width [β 3] (length of the second bending section 43b2) is
α 3=0.51mm,
β 3=0.63mm=1.24 α 3,
And there is following relationship:
α3≤β3≤1.5·α3。
I.e., blade part 43b has the width of substantially [β 3], and clearance portion 43c has the width of substantially [α 3].Also, the leaf
The width of piece portion 43b and the width of clearance portion 43c become roughly the same degree.Also, blade part 43b is in the first bending section
43b1 bending, therefore in the state of Fig. 8, the width of clearance portion 43c becomes [α 3 '] more slightly smaller than [α 3].
Even if the width [α 3 '] of clearance portion 43c and the width [β 3] of blade part 43b also become in the state of the bending
Roughly the same degree.In the 3rd embodiment,
α 3 '=0.40mm,
β 3=0.63mm=1.58 α 3 ',
And there is following relationship:
α3′≤β3≤2.1·α3′。
Also, the endpoint P of each second bending section 43b2 becomes 40 vertex of 40 side shapes, and the edge part with L liner 45
The inner surface of 45b abuts.20 pieces of blade part 43b are from inside substantially uniformly to pressing edge part on the outside of radial direction as a result,
45b.I.e., leaf spring 43 presses flanging edge 45b being in the multiple of 40 of substantially uniform position ring week.
Hereinafter, [β 1, β 2, the β 3] of each embodiment is set as [β], [α 1 ', α 2 ', α 3 '] is set as [α '].Each embodiment
Leaf spring 41,42,43 pads 45 edge part 45b using n pieces of blade part 41b, 42b, 43b in the vertex of the side 2n shape pressing L.I.e.,
Each endpoint P, P of second bending section 41b2,42b2,43b2 becomes on circumference relative to the inner surface of the edge part 45b of L liner 45
Press points.Also, by becoming the α ' of α '≤β≤2.1, so that each press points are circumferentially located at substantially uniform position, by
This, it can be ensured that leakproofness.If i.e., the interval (length on the side of polygon) of endpoint P, P is very big, there are edge part 45b to exist
A possibility that central location of the endpoint P, P float from guide surface 21a and generate leakage, but in embodiments, it can prevent
Such case.
In addition, in embodiments, the width [β] of blade part becomes β > α ' relative to the width [α '] of clearance portion.I.e.,
The width of width over gap portion 41c, 42c, 43c of blade part 41b, 42b, 43b are wide.In this way, passing through α≤β and making blade part
Piece number be 12 pieces to 20 pieces, so that it is guaranteed that the width [β] of blade part, can obtain enough pressings relative to edge part 45b
Power (elastic force), so as to ensure leakproofness.
In addition, for example, if being illustrated with first embodiment, as shown in figure 9, in leaf spring 41, baseplate part 41a and
Blade part 41b and the boundary line of clearance portion 41c are made of arc sections and straight line portion.Also, the first bending section 41b1 is from arc sections
It deviates and becomes straight line portion.Therefore, torsion etc. will not be applied to blade part 41b padding 45 by resistance from L when sliding
Stress, be able to maintain that durability sliding repeatedly.Also, lower curtate (the root of blade part 41b, 41b of clearance portion 41c
Between) become arc sections, therefore crack etc. will not be generated from clearance portion 41c, it can be ensured that the intensity of leaf spring 41.
In addition, becoming blade part 42b if making the piece number odd number piece of blade part as the leaf spring 42 of second embodiment
The position abutted and the position not abutted are relative to the asymmetric supported at three point construction of axis X.I.e., blade part 42b presses flanging
The power of edge 45b is also slightly divided side from endpoint P into the second bending section 42b2 due to the slightly flexible deformation of edge part 45b
It dissipating, therefore multiple blade part 42b are asymmetric relative to the abutted position of axis X, sealing 4 is difficult to tilt in guide part 21,
So as to equably be sealed.
In addition, in embodiments, by spool 3A and linking part 3B grip seal portion 4, therefore can be relative to as " shifting
The valve member 3 of dynamic component " keeps sealing 4 with simple construction.
In addition, L liner 45 is equipped with a pair in sealing 4 with back-to-back shape.Also, when in the edge part 45b of L liner 45
When in high pressure, the pressure of the high pressure is played a role in a manner of pressing edge part 45b to guide surface 21a, and whether above-mentioned the
When one flowing or when the second flowing, sealing 4 is all reliably sealed the space of 4 two sides of sealing.
In the above embodiment, to blade part be 12 pieces, 15 pieces, 20 pieces the case where be illustrated, but as long as be
12 pieces to 20 pieces of range then can obtain function and effect identical with each embodiment for either several pieces.
In the above embodiment, the example for applying the present invention to motor-driven valve is illustrated, but also being capable of phase
For the work in the four-way switching valve of sealing or patent document 3 in temperature expansion valve documented by such as patent document 2
The toothed lock of plug and 41,42,43 and L of the leaf spring liner 45 of each embodiment of L liner applications, and respectively constitute of the invention
Valve gear.
More than, embodiments of the present invention are described in detail referring to attached drawing, but specific structure is not limited to this
A little embodiments, the change etc. for not departing from the design of the range of purport of the invention are also included in the present invention.
The explanation of symbol
1-valve casing, 2-valve guiding parts, 21-guide parts, 2A-back pressure chamber, 3-valve members, the road 3b-Jun Ya, 3c-
The road Jun Ya, 3A-spool, 3B-linking part, 31-cylindrical portions, 32-lug bosses, 33-connection shafts, 34-lug bosses, 4-is close
Envelope portion, 41-leaf springs, 41a-baseplate part, the first bending section 41b-blade part, 41b1-, the second bending section 41b2-, 42-
Leaf spring, 42a-baseplate part, the first bending section 42b-blade part, 42b1-, the second bending section 42b2-, 43-leaf springs, 43a-
Baseplate part, the first bending section 43b-blade part, 43b1-, the second bending section 43b2-, 45-L liner, 45a-base portion,
45b-edge part, 46-stiffening plates, X-axis.
Claims (7)
1. a kind of valve gear, has:
The guide part of cylindrical shape；
Moving parts there is the axis along above-mentioned guide part to move to control the valve of the flowing of fluid；And
Sealing is set to above-mentioned moving parts and is embedded in above-mentioned guide part,
Act on the differential pressure of the above-mentioned fluid in the space of the axis direction two sides of the above-mentioned sealing in above-mentioned guide part above-mentioned
Moving parts,
Above-mentioned valve gear is characterized in that,
Above-mentioned sealing has: L liner, by the inner peripheral surface sliding contact with above-mentioned guide part edge part and be by movement described above
The base portion that component is kept is constituted；And leaf spring, be disposed in the inside of above-mentioned L liner and to the inner peripheral surface side of above-mentioned pilot hole by
Above-mentioned edge part is pressed,
Above-mentioned leaf spring by be held in above-mentioned moving parts baseplate part and with the radial periphery for being formed in aforesaid substrate portion and from
The more pieces of blade parts that inside presses the above-mentioned edge part of above-mentioned L liner are constituted, and have above-mentioned blade part and aforesaid substrate portion
Boundary part the first bending section and abutted in the outer part and with above-mentioned edge part than above-mentioned first bending section second bending
Portion,
Above-mentioned blade part is 12 pieces to 20 pieces, moreover, the width of above-mentioned blade part is wider than the clearance portion between above-mentioned blade part
Degree is big, and the vertex of the side 2n shape formed by the endpoint by above-mentioned second bending section of n pieces of above-mentioned blade part pads to press above-mentioned L
Above-mentioned edge part.
2. valve gear according to claim 1, which is characterized in that
The width beta of the width α ' of above-mentioned clearance portion and above-mentioned blade part has following relationship:
α′≤β≤2.1·α′。
3. valve gear according to claim 1 or claim 2, which is characterized in that
Above-mentioned first bending section is formed in the straight line portion of the side of above-mentioned blade part.
4. valve gear according to any one of claims 1 to 3, which is characterized in that
The lower curtate of above-mentioned clearance portion between the root of above-mentioned blade part becomes arc sections.
5. valve gear according to any one of claims 1 to 4, which is characterized in that
The piece number of above-mentioned blade part is odd number piece.
6. valve gear according to any one of claims 1 to 5, which is characterized in that
Above-mentioned moving parts is made of spool and linking part, the above-mentioned base portion of above-mentioned L liner and the aforesaid substrate of above-mentioned leaf spring
Portion is clamped by above-mentioned spool and above-mentioned linking part, so that above-mentioned sealing is by movement described above component clamping.
7. valve gear according to any one of claims 1 to 6, which is characterized in that
Above-mentioned sealing has a pair of above-mentioned leaf spring, a pair of above-mentioned L liner and the reinforcement between above-mentioned a pair of L liner
Plate,
Above-mentioned a pair of L liner is configured to a pair of above-mentioned edge part outside towards each other on above-mentioned axis direction, and passes through one
Above-mentioned stiffening plate is clamped to above-mentioned base portion, and above-mentioned sealing is by movement described above component clamping.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016119271A JP6475197B2 (en) | 2016-06-15 | 2016-06-15 | Valve device |
| JP2016-119271 | 2016-06-15 | ||
| PCT/JP2017/019151 WO2017217193A1 (en) | 2016-06-15 | 2017-05-23 | Valve apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109154407A true CN109154407A (en) | 2019-01-04 |
| CN109154407B CN109154407B (en) | 2020-02-14 |
Family
ID=60664484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780031320.5A Expired - Fee Related CN109154407B (en) | 2016-06-15 | 2017-05-23 | Valve device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6475197B2 (en) |
| CN (1) | CN109154407B (en) |
| WO (1) | WO2017217193A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6952015B2 (en) * | 2018-06-19 | 2021-10-20 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
| JP6864652B2 (en) * | 2018-06-19 | 2021-04-28 | 株式会社鷺宮製作所 | Electric valve and refrigeration cycle system |
| JP7474055B2 (en) | 2020-01-09 | 2024-04-24 | Nok株式会社 | Sealing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2309743A (en) * | 1996-02-01 | 1997-08-06 | Daimler Benz Ag | I.c. engine valve, eg EGR return valve, actuated by electric motor |
| JP2000320711A (en) * | 1999-03-08 | 2000-11-24 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2001065703A (en) * | 1999-08-24 | 2001-03-16 | Eagle Ind Co Ltd | Lip type seal |
| CN1519495A (en) * | 2003-02-03 | 2004-08-11 | ��ʽ���粻������ | Motorised valve |
| JP2009275811A (en) * | 2008-05-14 | 2009-11-26 | Ckd Corp | Solenoid valve |
| CN102759234A (en) * | 2011-04-27 | 2012-10-31 | 株式会社鹭宫制作所 | Thermostatic expansion valve |
| CN105276200A (en) * | 2014-07-18 | 2016-01-27 | 株式会社鹭宫制作所 | Electric valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3016231C2 (en) * | 1980-04-26 | 1983-05-05 | Kaco Gmbh + Co, 7100 Heilbronn | Sealing arrangement |
-
2016
- 2016-06-15 JP JP2016119271A patent/JP6475197B2/en not_active Expired - Fee Related
-
2017
- 2017-05-23 CN CN201780031320.5A patent/CN109154407B/en not_active Expired - Fee Related
- 2017-05-23 WO PCT/JP2017/019151 patent/WO2017217193A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2309743A (en) * | 1996-02-01 | 1997-08-06 | Daimler Benz Ag | I.c. engine valve, eg EGR return valve, actuated by electric motor |
| JP2000320711A (en) * | 1999-03-08 | 2000-11-24 | Saginomiya Seisakusho Inc | Electric control valve |
| JP2001065703A (en) * | 1999-08-24 | 2001-03-16 | Eagle Ind Co Ltd | Lip type seal |
| CN1519495A (en) * | 2003-02-03 | 2004-08-11 | ��ʽ���粻������ | Motorised valve |
| JP2009275811A (en) * | 2008-05-14 | 2009-11-26 | Ckd Corp | Solenoid valve |
| CN102759234A (en) * | 2011-04-27 | 2012-10-31 | 株式会社鹭宫制作所 | Thermostatic expansion valve |
| CN105276200A (en) * | 2014-07-18 | 2016-01-27 | 株式会社鹭宫制作所 | Electric valve |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017217193A1 (en) | 2017-12-21 |
| CN109154407B (en) | 2020-02-14 |
| JP6475197B2 (en) | 2019-02-27 |
| JP2017223293A (en) | 2017-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109154407A (en) | Valve gear | |
| JP6465619B2 (en) | Flow path switching valve | |
| CN103245138B (en) | Expansion valve | |
| KR100690156B1 (en) | Valve apparatus | |
| JP6442515B2 (en) | Rotary four-way switching valve with low pressure drop and low leakage | |
| WO2011039918A1 (en) | Rotary valve | |
| US20020005221A1 (en) | Cycle reversing valve for use in heat pumps | |
| JP2002228289A (en) | Rotary valve unit and pulse pipe refrigerating machine | |
| CN106090355B (en) | Flow control valve | |
| JP2009299762A (en) | Control valve and air conditioner having this control valve | |
| CN108779869A (en) | Motor-driven valve and refrigerating circulation system | |
| CN107631033A (en) | Motor-driven valve | |
| JP2008510948A (en) | Reversing valve with straight flow path | |
| CN108700215A (en) | Motor-driven valve | |
| CN108700216A (en) | Motor-driven valve | |
| JP2017180639A (en) | Seal structure and motor valve | |
| CN108700217B (en) | Motor-driven valve | |
| CN108779870A (en) | Motor-driven valve and refrigerating circulation system | |
| JP2023168434A (en) | Motor-operated valve and refrigeration cycle system | |
| JP6478586B2 (en) | Flow path switching valve | |
| CN105937648B (en) | Slide valve and refrigerating cycle | |
| JP2016098968A (en) | Channel switching valve | |
| JP6491861B2 (en) | Flow path switching valve | |
| JP2017133619A (en) | Hexagonal selector valve | |
| JP6689418B2 (en) | Flow path switching valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |