CN103062465A - Pressure adjusting screw mechanism and pressure control valve - Google Patents
Pressure adjusting screw mechanism and pressure control valve Download PDFInfo
- Publication number
- CN103062465A CN103062465A CN2012103936546A CN201210393654A CN103062465A CN 103062465 A CN103062465 A CN 103062465A CN 2012103936546 A CN2012103936546 A CN 2012103936546A CN 201210393654 A CN201210393654 A CN 201210393654A CN 103062465 A CN103062465 A CN 103062465A
- Authority
- CN
- China
- Prior art keywords
- adjusting screw
- hollow portion
- spring support
- mentioned
- spring
- 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
Images
Abstract
The invention provides a pressure adjusting screw mechanism which can reduce the operation torque of an adjusting screw without increasing the lowest adjusting pressure of a valve. When the head (6a) of the adjusting screw (6) enters into a cylinder (51), and head (6a) is pressed against a hollow part (31) of a spring support part (3) on the screw side. When the head (6a) leaves the cylinder (51), the wall of a locking groove (6b) is locked on a stepped face (35) of the hollow part (31).
Description
Technical field
The present invention relates to pressure adjusting screw mechanism and pressure controlled valve such as reduction valve etc.
Background technique
At present, as pressure adjusting screw mechanism, as shown in Figure 6, comprising: housing 105; Spring 108, this spring 108 are disposed in the above-mentioned housing 105; The first spring support 101 and the second spring support 102, this first spring support 101 and the second spring support 102 are disposed at the two ends of spring 108 in above-mentioned housing 105; And adjusting screw 103, this adjusting screw 103 is fixed in above-mentioned the first spring support 101 (with reference to Japanese patent laid-open 8-253125 communique: patent documentation 1).
Above-mentioned adjusting screw 103 screws togather with the tapped hole 105a of above-mentioned housing 105, by with in the adjusting screw 103 precession housings 105 or from housing 105 interior back-outs, comes the compressive force via the first spring support 101 Regulation springs 108.The compressive force of this spring 108 is passed to guiding valve 104 via the second spring support 104.That is, adjusting screw 103 Regulation springs 108 put on the active force of guiding valve 104.
Yet in above-mentioned existing pressure adjusting screw mechanism, adjusting screw 103 and the first spring support 101 are fixed together, and therefore, when screwing or unclamp adjusting screw 103, the first spring support 101 is followed the rotation of adjusting screw 103 and rotated
At this moment, because the seat surface of above-mentioned the first spring support 101 and the end contact of above-mentioned spring 108 produce frictional force, in addition, also because contacting with the inner peripheral surface of housing 105, the O shape ring 106 of the outer circumferential face that embeds the first spring support 101 produces frictional force.
In addition, overcome the operation torque that above-mentioned frictional force makes the moment formation adjusting screw 103 of the required power of adjusting screw 103 rotations.Therefore, exist the operation torque of adjusting screw 103 to become large problem.
Patent documentation 1: Japanese patent laid-open 8-253125 communique
Summary of the invention
Therefore, technical problem of the present invention is to provide a kind of pressure adjusting screw mechanism and pressure controlled valve, and the minimum adjusting pressure that valve need not improve in this pressure adjusting screw mechanism just can reduce the operation torque of adjusting screw.
In order to solve the problems of the technologies described above, the feature of pressure adjusting screw of the present invention mechanism is to comprise: cylindrical shell, and this cylindrical shell has screw thread in an axial side; Cap, the screw thread of this cap and above-mentioned cylindrical shell screws togather, and has tapped hole at the center; Spring, this spring are disposed in the above-mentioned cylindrical shell; Spring support, this spring support becomes an end bearing of above-mentioned spring can have sealing component in above-mentioned axially advance and retreat and in periphery, seals between the inner peripheral surface of sealing member to above-mentioned spring support and above-mentioned cylindrical shell; And adjusting screw, the tapped hole of this adjusting screw and above-mentioned cap screws togather, and makes above-mentioned spring support in above-mentioned axially advance and retreat, and to regulate the elastic force of above-mentioned spring, above-mentioned adjusting screw comprises: screw body, the screw hole of this screw body and above-mentioned cap screws togather; Head; And fastening groove, this fastening groove is between above-mentioned head and above-mentioned screw body, above-mentioned spring support comprises: hollow portion, above-mentioned head inserts this hollow portion in the mode that can rotate freely, and when above-mentioned head moves towards above-mentioned axial opposite side, above-mentioned head can with above-mentioned hollow portion butt, on the other hand, when above-mentioned head during towards an above-mentioned axial side shifting, the wall of above-mentioned fastening groove can with above-mentioned hollow portion fastening; And patchhole, this patchhole makes above-mentioned hollow portion be communicated with outside, and inserts for above-mentioned fastening groove.
According to pressure adjusting screw of the present invention mechanism, put in the situation of active force of spool will increasing above-mentioned spring, adjusting screw is moved with the inside with its precession cylindrical shell towards above-mentioned axial opposite side, and utilize this adjusting screw to press spring support, to utilize this spring support by pressing spring.At this moment, because the head of adjusting screw contacts with the hollow portion of spring support in the mode that can rotate freely, and presses spring support, therefore, spring support can not followed the rotation of adjusting screw and be rotated.By this, when screwing adjusting screw, can not produce excessive running torque at spring support, can reduce the operation torque that makes the adjusting screw rotation.
On the other hand, put in the situation of active force of spool will reducing above-mentioned spring, make adjusting screw towards an above-mentioned axial side shifting so that its inside from cylindrical shell is screwed out, thereby reduce spring support to the pressing force of spring.At this moment, the wall of the fastening groove of adjusting screw and the hollow portion fastening of spring support, spring support is followed adjusting screw, therefore, spring support and adjusting screw can be retracted.By this, when unclamping above-mentioned adjusting screw, overcome friction retracts spring support, thus fully retracting spring load, and can reduce fully the minimum adjusting pressure of valve.
In addition, in the pressure adjusting screw mechanism of a mode of execution, above-mentioned hollow portion forms the discoideus space concentric with the inner peripheral surface of above-mentioned cylindrical shell, and above-mentioned patchhole is the circular hole with respect to above-mentioned hollow portion off-centre.
Pressure adjusting screw mechanism according to this mode of execution, above-mentioned hollow portion forms the discoideus space concentric with the inner peripheral surface of above-mentioned cylindrical shell, above-mentioned patchhole is the circular hole with respect to above-mentioned hollow portion off-centre, therefore, consist of step surface hollow portion and fastening groove adjusting screw fastening by the step between the inner peripheral surface of the inner peripheral surface of hollow portion and patchhole.Like this, can produce simply locking strutcture between the fastening groove of hollow portion and adjusting screw.
In addition, in the situation of the wall of the above-mentioned fastening groove that will make above-mentioned adjusting screw and above-mentioned hollow portion fastening, head can be inserted hollow portion from patchhole, and make head mobile towards an anti-eccentric side (side opposite with an eccentric side) in hollow portion, so that the wall of fastening groove and hollow portion fastening, thereby can easily carry out the fastening groove towards the fastening operation of hollow portion.
In addition, in the pressure adjusting screw mechanism of a mode of execution, above-mentioned hollow portion forms the space that extends to the position at the center of crossing from the periphery of above-mentioned spring support, and above-mentioned patchhole forms the slit that extends to the position at the center of crossing from the periphery of above-mentioned spring support.
Pressure adjusting screw mechanism according to this mode of execution, above-mentioned hollow portion forms the space that extends to the position at the center of crossing from the periphery of above-mentioned spring support, above-mentioned patchhole forms the slit that extends to the position at the center of crossing from the periphery of above-mentioned spring support, therefore, consist of step surface hollow portion and fastening groove adjusting screw fastening by the step between the inner peripheral surface of the inner peripheral surface of hollow portion and patchhole.Like this, can produce simply locking strutcture between the fastening groove of hollow portion and adjusting screw.
In addition, in the situation of the wall of the above-mentioned fastening groove that will make above-mentioned adjusting screw and above-mentioned hollow portion fastening, head and fastening groove can be inserted hollow portion and patchhole from the periphery of spring support, so that the wall of fastening groove and hollow portion fastening, thereby can easily carry out the wall of fastening groove towards the fastening operation of hollow portion.
In addition, in the pressure controlled valve of a mode of execution, comprising: spool; And the above-mentioned pressure adjusting screw mechanism that the pressure that above-mentioned spool is controlled is regulated.
According to the pressure controlled valve of this mode of execution, owing to have above-mentioned pressure adjusting screw mechanism, therefore, need not improve the minimum adjusting pressure of valve, just can reduce the operation torque of adjusting screw.
According to pressure adjusting screw of the present invention mechanism, above-mentioned spring support has above-mentioned hollow portion and above-mentioned patchhole, therefore, need not improve the minimum adjusting pressure of valve, just can reduce the operation torque of adjusting screw.
According to pressure controlled valve of the present invention, owing to have above-mentioned pressure adjusting screw mechanism, therefore, need not improve the minimum adjusting pressure of valve, just can reduce the operation torque of adjusting screw.
Description of drawings
Fig. 1 is the sectional view that comprises the pressure controlled valve of pressure adjusting screw of the present invention mechanism.
Fig. 2 is the plan view of adjusting screw.
Fig. 3 A is the side view of spring support.
Fig. 3 B is the sectional view of spring support.
Fig. 4 is the major component enlarged view of pressure adjusting screw mechanism.
Fig. 5 A is the side view of another spring support.
Fig. 5 B is the sectional view of another spring support.
Fig. 6 is the sectional view of existing pressure adjusting screw mechanism.
(symbol description)
1 main part
3,3A spring support
31,31A hollow portion
32,32A patchhole
35,35A step surface
51 cylindrical shells (stopper)
52 caps (acorn nut)
The 52a tapped hole
6 adjusting screw
The 6a head
6b fastening groove
The 6c screw body
8 sealing components (O shape ring)
17 spools (guiding valve)
41 first springs
42 second springs
Port of P1
The P2 secondary port
Z pressure adjusting screw mechanism
Embodiment
Below, the present invention will be described in detail according to illustrated mode of execution.
(the first mode of execution)
Fig. 1 represents to comprise the sectional view of the pressure controlled valve of pressure adjusting screw of the present invention mechanism.As an example of this pressure controlled valve, show straight ejector half reduction valve.As shown in Figure 1, pressure controlled valve comprises: the main part 1 with port P1 and secondary port P2; Be contained in aforementioned body section 1 and will open the spool 17 of closing between port P1 and the secondary port P2; And the pressure adjusting screw Z of mechanism that the pressure that above-mentioned spool 17 is controlled is regulated.Below, the pressure adjusting screw Z of mechanism one side (being the left side among the figure) is made as front side or a side, and main part 1 one sides (being the right side among the figure) are made as rear side or opposite side.
Have valve chamber 12 and guide chamber 14 in the inside of aforementioned body section 1.This valve chamber 12 has: the first annular slot 15 that is communicated with port P1; And the second annular slot 16 that is communicated with secondary port P2.The spring housing 13 of the pressure adjusting screw Z of mechanism is communicated with a side (front side) of valve chamber 12, and above-mentioned guide chamber 14 is communicated with the opposite side (rear side) of valve chamber 12.
Above-mentioned guide chamber 14 is made of the space 21a that uses stopper 21 that circular hole 20 sealings of main part 1 rear end are formed and the circular hole 21b of stopper 21 front ends.Above-mentioned space 21a and above-mentioned circular hole 21b are communicated with via the radial passage 21c that is located at stopper 21.Above-mentioned space 21a is communicated with secondary port P2 via the axial passageway 22 in the aforementioned body section 1.
Above-mentioned spool 17 is guiding valve as an example, and it has the first sliding plate 17a at front end, has the second sliding plate 17d in the rear end, and has the first middle sliding plate 17b and the second middle sliding plate 17c between above-mentioned the first sliding plate 17a and above-mentioned the second sliding plate 17d.Sliding plate 17b is positioned at the place ahead of sliding plate 17c in the middle of second in the middle of first.
Above-mentioned the first sliding plate 17a and above-mentioned the second sliding plate 17d are chimeric with mode and the valve chamber 12 that can be free to slide.Above-mentioned in the middle of first sliding plate 17b close opening between port P1 and the secondary port P2.When the front end butt of the rear end of spool 17 and stopper 21, be in maximum opening based on the port P1 of sliding plate 17b in the middle of first and the aperture between the secondary port P2.
Above-mentioned spool 17 has the sluicing path 29 that extends on the axle therein.This sluicing path 29 has the first opening 29a in the place ahead of the first sliding plate 17a, and has the second opening 29b between sliding plate 17c and the second sliding plate 17d in the middle of second.The first opening 29a is communicated with spring housing 13, and spring housing 13 is communicated with the case port T that is located at aforementioned body section 1 via not shown path.
The above-mentioned pressure adjusting screw Z of mechanism has: at the axial threaded cylindrical shell 51 of a side tool; The cap 52 that screws togather with the screw thread of cylindrical shell 51; Be disposed at the first spring 41 and second spring 42 of cylindrical shell 51 inside; Be disposed at valve side spring support 2 and the screw side spring support 3 of cylindrical shell 51 inside; And the adjusting screw 6 that screws togather with the tapped hole 52a of cap 52.
Above-mentioned cylindrical shell 51 is stopper as an example, and cap 52 screws togather with an end (front end) of cylindrical shell 51, and the other end (rear end) of the front end of main part 1 and cylindrical shell 51 screws togather.The inside of cylindrical shell 51 consists of above-mentioned spring housing 13.Cap 52 is acorn nut as an example, has tapped hole 52a at the center of cap 52.
Above-mentioned valve side spring support 2 and above-mentioned screw side spring support 3 can move freely along the axle of cylindrical shell 51, and are disposed at the inside of cylindrical shell 51.Valve side spring support 2 is disposed at the position of more leaning on main part 1 one sides (rear) than screw side spring support 3.Ball 24 is chimeric with the rear surface of valve side spring support 2, and valve side spring support 2 is by the front end butt of this ball 24 with spool 17.
Above-mentioned the first spring 41 and above-mentioned the second spring 42 are disposed between valve side spring support 2 and the screw side spring support 3.The first spring 41 and 42 pairs on the second spring are disposed at spool 17 application of forces of the second end (rearward end) side of cylindrical shell 51.
Above-mentioned the first spring 41 is the main pressure adjusting springs towards 14 pairs of spool 17 application of forces of guide chamber.Above-mentioned the second spring 42 is spring constant less important secondary springs less than the spring constant of the first spring 41.The detailed structure of the first spring 41, the second spring 42 and action are disclosed in Japanese patent laid-open 8-253125 communique.
Above-mentioned the second spring 42 is disposed at the inboard of above-mentioned the first spring 41.The second spring 42 contacts with minor diameter part 2b, and this minor diameter part 2b is than the high step of the 2a of seat surface section that contacts with the first spring 41 in the valve side spring support 2.The second spring 42 contacts with minor diameter part 3b, and this minor diameter part 3b is than the high step of the 3a of seat surface section that contacts with the first spring 41 in the screw side spring support 3.
Above-mentioned the second spring 42 is disposed between the minor diameter part 3b of the minor diameter part 2b of valve side spring support 2 and screw side spring support 3 with natural length, not the effect each port P1, P2, T are arranged under the state of the pressure of atmosphere opening, spool 17 towards guide chamber 14 application of forces, is opened into maximum opening to utilize in the middle of first sliding plate 17b with between port P1 and the secondary port P2.
Above-mentioned screw side spring support 3 is disposed at than the first spring 41 and the second spring 42 more by the position of first end one side (front end) of cylindrical shell 51, and an end bearing of the first spring 41 and the second spring 42 is become and can advance and retreat in the axial direction.Embedding at the outer circumferential face of the 3a of seat surface section of screw side spring support 3 has sealing component 8.Sealing member 8 encircles for O shape as an example, seals between the inner peripheral surface to the outer circumferential face of the 3a of seat surface section of screw side spring support 3 and cylindrical shell 51, with Packing spring chamber 13.
Above-mentioned adjusting screw 6 screws togather with the tapped hole 52a of cap 52, and advances and retreat at the internal freedom of cylindrical shell 51 along the axle of cylindrical shell 51.Adjusting screw 6 is advanced and retreat screw side spring support 3 in the axial direction, to regulate the elastic force of the first spring 41 and the second spring 42.That is, increase the active force of the first spring 41 and the second spring 42 by the inside with adjusting screw 6 precession cylindrical shells 51, on the other hand, by adjusting screw 6 is screwed out to reduce the active force of the first spring 41 and the second spring 42 from the inside of cylindrical shell 51.Adjusting screw 6 also screws togather with nut 28, unclamps from cap 52 to prevent it.
As depicted in figs. 1 and 2, above-mentioned adjusting screw 6 has: the screw body 6c that screws togather with the tapped hole 52a of cap 52; Head 6a; And the fastening groove 6b between head 6a and screw body 6c.The diameter of the diameter of head 6a and screw body 6c is roughly the same, and the diameter of head 6a also can be less than the diameter of screw body 6c.The diameter of fastening groove 6b is less than the diameter of the diameter of head 6a and screw body 6c.The axial length of fastening groove 6b is larger than the axial length of the patchhole 32 of screw side spring support 3, and less than the length that the axial length addition of the patchhole 32 of the axial length of the tapped hole 52a of cap 52 and spring support 3 is obtained.
Shown in Fig. 3 A and Fig. 3 B, above-mentioned screw side spring support 3 has: hollow portion 31; And the patchhole 32 that is communicated with this hollow portion 31.Hollow portion 31 and patchhole 32 are located at the 3a of seat surface section.Hollow portion 31 is positioned at the position of more leaning on the inboard, rear than patchhole 32.The outer circumferential face of present facial 3a has all grooves 33 that embed for sealing component 8.
Above-mentioned hollow portion 31 forms discoideus space, and the center 31a of hollow portion 31 is concentric with the center of the inner peripheral surface of cylindrical shell 51 (being the center of spring support 3).Above-mentioned patchhole 32 is circular holes, and the center 32a of patchhole 32 is equivalent to the distance of eccentric amount e with respect to the center 31a off-centre of hollow portion 31.
The internal diameter of above-mentioned patchhole 32 is slightly larger than the external diameter of the head 6a of above-mentioned adjusting screw 6, and is less than the internal diameter of above-mentioned hollow portion 31.The inner peripheral surface by an eccentric side of patchhole 32 is consistent with the inner peripheral surface of hollow portion 31.Be provided with step surface 35 between the inner peripheral surface by an anti-eccentric side (side opposite with an eccentric side) of the inner peripheral surface of hollow portion 31 and patchhole 32, this step surface 35 consists of the inwall of hollow portions 31.
As shown in Figure 4, the head 6a of above-mentioned adjusting screw 6 inserts in the hollow portion 31 of above-mentioned screw side spring support 3 in the mode that can rotate freely.In addition, when head 6a moves and when entering the inside of cylindrical shell 51 towards axial opposite side, head 6a can with hollow portion 31 butts.On the other hand, when head 6a withdraws from towards an axial side shifting and from the inside of cylindrical shell 51, the wall of fastening groove 6b can with step surface 35 fastenings of hollow portion 31.In addition, the patchhole 32 of screw side spring support 3 makes hollow portion 31,31A be communicated with the outside and inserts for fastening groove 6b.
In other words, when above-mentioned adjusting screw 6 is linked with the mode that can rotate freely and above-mentioned screw side spring support 3, the head 6a of adjusting screw 6 is positioned at the hollow portion 31 of spring support 3, and step surface 35 fastenings of the hollow portion 31 of the wall of the fastening groove 6b of adjusting screw 6 and spring support 3.In addition, when adjusting screw 6 entered the inside of cylindrical shell 51, head 6a contacted and presses spring support 3 in the mode that can rotate freely with spring support 3.On the other hand, when adjusting screw 6 withdrawed from from the inside of cylindrical shell 51, step surface 35 fastenings of the wall of fastening groove 6b and hollow portion 31 made spring support 3 follow adjusting screw 6.
Then, the linking method of above-mentioned adjusting screw 6 with above-mentioned screw side spring support 3 described, at first, adjusting screw 6 and cap 52 are screwed togather, and head 6a and fastening groove 6b are given prominence to from cap 52.Under this state, head 6a is inserted hollow portion 31 from patchhole 32.In addition, make head 6a interior towards step surface 35 1 side shiftings at hollow portion 31, so that step surface 35 fastenings of the wall of fastening groove 6b and hollow portion 31.Then, under the state that makes fastening groove 6b and hollow portion 31 fastenings, on one side spring support 3 is inserted cylindrical shells 51 inside, cap 52 and cylindrical shell 51 are screwed togather.
The pressure adjusting screw Z of mechanism according to said structure, put in the situation of active force of spool 17 will increasing above-mentioned spring 41,42, inside with adjusting screw 6 precession cylindrical shells 51, and utilize this adjusting screw 6 to press screw side spring support 3, to utilize this spring support 3 by pressing spring 41,42.At this moment, because the head 6a of adjusting screw 6 contacts with spring support 3 in the mode that can rotate freely, and presses spring support 3, therefore, spring support 3 can not followed the rotation of adjusting screw 6 and be rotated.
By this, when screwing above-mentioned adjusting screw 6, can not produce excessive running torque at screw side spring support 3, can reduce the operation torque that makes adjusting screw 6 rotations.Particularly, in the present invention, as shown in Figure 4, the operation torque of adjusting screw 6 is with the frictional force at adjusting screw 6 and the contacting part P place of spring support 3 and the moment from obtaining after the initial distance A of the axle of adjusting screw 6 multiplies each other.Therefore, the operation torque of adjusting screw 6 is less.
Relative therewith, in the prior art, as shown in Figure 6, because the seat surface of the first spring support 101 and the end contact of spring 108 produce frictional force, in addition, also produce frictional force because the O shape ring 106 of the outer circumferential face that embeds the first spring support 101 contacts with the inner peripheral surface of housing 105, and the distance till from the axle of adjusting screw 103 to the position of the above-mentioned frictional force of generation is larger than above-mentioned distance A of the present invention.Therefore, in the prior art, the operation torque of adjusting screw 103 is very large.
On the other hand, in the present invention, put in the situation of active force of spool 17 will reducing above-mentioned spring 41,42, the inside of adjusting screw 6 from cylindrical shell 51 is screwed out, to reduce by 3 pairs of springs 41 of screw side spring support, 42 pressing force.At this moment, step surface 35 fastenings of the wall of the fastening groove 6b of adjusting screw 6 and the hollow portion 31 of spring support 3, spring support 3 is followed adjusting screw 6, therefore, spring support 3 and adjusting screw 6 can be retracted.
By this, when unclamping above-mentioned adjusting screw 6, the frictional force that overcomes sealing component 8 retracts screw side spring support 3, thus fully retracting spring load, and can reduce fully the minimum adjusting pressure of valve.
Relative therewith, as a comparative example, can consider the situation with the first spring support 101 in the conventional example shown in Figure 6 and adjusting screw 103 simple separation.When unclamping adjusting screw 103, because contacting with the inner peripheral surface of housing 105, the O shape ring 106 of the outer circumferential face that embeds the first spring support 101 produces frictional force, and therefore, the first spring support 101 is not followed adjusting screw 103.Therefore, load on spring can not discharged fully, and the residual part of meeting, thereby existence can not fully reduce the unfavorable condition of the minimum adjusting pressure of valve.
In addition, according to the present invention, hollow portion 31 is set and with respect to the patchhole 32 of these hollow portion 31 off-centre at above-mentioned screw side spring support 3, consist of step surface 35 with the hollow portion 31 of the fastening groove 6b fastening of adjusting screw 6 by the step between the inner peripheral surface of the inner peripheral surface of hollow portion 31 and patchhole 32, therefore, can produce simply locking strutcture between the fastening groove 6b of hollow portion 31 and adjusting screw 6.
In addition, in the situation of the wall of the above-mentioned fastening groove 6b that will make above-mentioned adjusting screw 6 and 31 fastenings of above-mentioned hollow portion, head 6a can be inserted hollow portion 31 from patchhole 32, and make head 6a interior towards an anti-eccentric side shifting at hollow portion 31, so that the wall of fastening groove 6b and hollow portion 31 fastenings, thereby can easily carry out fastening groove 6b towards the fastening operation of hollow portion 31.
In addition, according to the pressure controlled valve of said structure, owing to have the above-mentioned pressure adjusting screw Z of mechanism, therefore, need not improve the minimum adjusting pressure of valve, just can reduce the operation torque of adjusting screw 6.
(the second mode of execution)
Fig. 5 A and Fig. 5 B represent the second mode of execution of the spring support of pressure adjusting screw of the present invention mechanism.Be that with the difference of above-mentioned the first mode of execution in this second mode of execution, the hollow portion of screw side spring support is different with the shape of patchhole.
Shown in Fig. 5 A and Fig. 5 B, screw side spring support 3A has: the hollow portion 31A of U word incision-like; And the patchhole 32A of the U word incision-like that is communicated with this hollow portion 31A.Hollow portion 31A forms the space that extends to the position at the center of crossing from the periphery of spring support 3A, and patchhole 32A is the slit that extends to the position at the center of crossing from the periphery of spring support 3A.In addition, spring support 3A has all groove 33A that confession (Fig. 1's) sealing component 8 embeds.
The external diameter of the head 6a of the Width adjusting screw 6 of above-mentioned hollow portion 31A is slightly large, and the external diameter of the fastening groove 6b of the Width adjusting screw 6 of above-mentioned patchhole 32A is slightly large.Be provided with step surface 35A between the internal surface of the internal surface of hollow portion 31A and patchhole 32A, this step surface 35A consists of the inwall of hollow portion 31A.
In addition, above-mentioned adjusting screw 6 is as follows with the linking method of above-mentioned screw side spring support 3A: on one side head 6a is inserted from the otch side of hollow portion 31A, on one side fastening groove 6b is inserted from the otch side of patchhole 32A, make the step surface 35A fastening of wall and the hollow portion 31A of fastening groove 6b, so that adjusting screw 6 is linked with spring support 3A.Like this, can easily carry out the fastening operation of adjusting screw 6 and spring support 3A.
Pressure adjusting screw mechanism according to said structure, hollow portion 31A and the patchhole 32A of slit-shaped are set at screw side spring support 3A, consist of step surface 35A with the hollow portion 31A of the fastening groove 6b fastening of adjusting screw 6 by the step between the inner peripheral surface of the inner peripheral surface of hollow portion 31A and patchhole 32, therefore, can produce simply locking strutcture between the fastening groove 6b of hollow portion 31A and adjusting screw 6.
In addition, the present invention is not limited to above-mentioned mode of execution.For example, also can carry out various combinations to each characteristic point of above-mentioned the first mode of execution and above-mentioned the second mode of execution.
In addition, as pressure controlled valve, except reduction valve, also can be relief valve (safety valve), sequence valve, back pressure valve, unloading valve etc.
In addition, if can butt when the head of adjusting screw enters the inside of cylindrical shell, and when head withdraws from from the inside of cylindrical shell can with the wall fastening of fastening groove, then the hollow portion shape of spring support also can be arbitrary shape.In addition, if hollow portion is communicated with and the insertion of confession fastening groove with outside, then the shape of the patchhole of spring support also can be arbitrary shape.
In addition, also can increase or reduce the quantity of spring.That is, also can omit the second spring and only adopt this root spring of the first spring, perhaps, also can adopt the spring more than three.In addition, also can handle be set in adjusting screw.In addition, the structure of valve side spring support is not limited to this mode of execution.In addition, also can omit valve side spring support, for example use one to be fixed in the lip part of spool front end to replace valve side spring support.
Claims (4)
1. a pressure adjusting screw mechanism is characterized in that, comprising:
Cylindrical shell (51), this cylindrical shell (51) has screw thread in an axial side;
Cap (52), this cap (52) screws togather with the screw thread of described cylindrical shell (51), and has tapped hole (52a) at the center;
Spring (41,42), this spring (41,42) is disposed in the described cylindrical shell (51);
Spring support (3,3A), this spring support (3,3A) becomes an end bearing of described spring (41,42) can have sealing component (8) in described axially advance and retreat and in periphery, seals between the inner peripheral surface of sealing member (8) to described spring support (3,3A) and described cylindrical shell (51); And
Adjusting screw (6), the tapped hole (52a) of this adjusting screw (6) and described cap (52) screws togather, and makes described spring support (3,3A) in described axially advance and retreat, regulating the elastic force of described spring (41,42),
Described adjusting screw (6) comprising:
Screw body (6c), this screw body (6c) screws togather with the tapped hole (52a) of described cap (52);
Head (6a); And
Fastening groove (6b), this fastening groove (6b) are positioned between described head (6a) and the described screw body (6c),
Described spring support (3,3A) comprising:
Hollow portion (31,31A), described head (6a) inserts this hollow portion (31,31A) in the mode that can rotate freely, and when described head (6a) moves towards described axial opposite side, described head (6a) can with described hollow portion (31,31A) butt, on the other hand, when described head (6a) during towards a described axial side shifting, the wall of described fastening groove (6b) can with described hollow portion (31,31A) fastening; And
Patchhole (32,32A), this patchhole (32,32A) make described hollow portion (31,31A) be communicated with outside, and for described fastening groove (6b) insertion.
2. pressure adjusting screw as claimed in claim 1 mechanism is characterized in that,
Described hollow portion (31) forms the discoideus space concentric with the inner peripheral surface of described cylindrical shell (51),
Described patchhole (32) is the circular hole eccentric with respect to described hollow portion (31).
3. pressure adjusting screw as claimed in claim 1 mechanism is characterized in that,
Described hollow portion (31A) forms the space that extends to the position at the center of crossing from the periphery of described spring support (3A),
Described patchhole (32A) is the slit that extends to the position at the center of crossing from the periphery of described spring support (3A).
4. a pressure controlled valve is characterized in that, comprising:
Spool (17); And
Each described pressure adjusting screw mechanism (Z) in the claims 1 to 3 that the pressure that described spool (17) is controlled is regulated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-228675 | 2011-10-18 | ||
| JP2011228675A JP5375921B2 (en) | 2011-10-18 | 2011-10-18 | Pressure adjusting screw mechanism and pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103062465A true CN103062465A (en) | 2013-04-24 |
| CN103062465B CN103062465B (en) | 2015-05-06 |
Family
ID=48105241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210393654.6A Active CN103062465B (en) | 2011-10-18 | 2012-10-16 | Pressure adjusting screw mechanism and pressure control valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5375921B2 (en) |
| CN (1) | CN103062465B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387828A (en) * | 2017-09-04 | 2017-11-24 | 东莞市旭欧精密五金制品有限公司 | A kind of Depressure valve |
| TWI623439B (en) * | 2017-05-19 | 2018-05-11 | 致伸科技股份有限公司 | Thermo sensitive printer |
| CN112166275A (en) * | 2018-04-30 | 2021-01-01 | 纽珀有限公司 | Valve operating device |
| CN112334273A (en) * | 2018-01-19 | 2021-02-05 | 发克泰克有限责任公司 | Sequence valve in port |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08253125A (en) * | 1995-03-20 | 1996-10-01 | Daikin Ind Ltd | Direct acting pressure reducing valve |
| CN2274270Y (en) * | 1996-07-11 | 1998-02-11 | 宗绪伦 | Pressure reducer for gas cylinder |
| JPH10246348A (en) * | 1997-03-06 | 1998-09-14 | Fuji Koki Corp | Pressure regulating valve |
| JP3561198B2 (en) * | 2000-01-18 | 2004-09-02 | 矢崎総業株式会社 | Pressure regulator |
| CN201212575Y (en) * | 2008-07-09 | 2009-03-25 | 王晓平 | Pilot double-piston high differential pressure reducing valve |
| CN101625043A (en) * | 2009-08-13 | 2010-01-13 | 凯迈（洛阳）气源有限公司 | High-pressure reducing valve |
| CN201487235U (en) * | 2009-08-17 | 2010-05-26 | 费斯托(中国)有限公司 | Throttling valve |
| CN101749465A (en) * | 2008-12-02 | 2010-06-23 | 上海宇航系统工程研究所 | Double-valve seat pressure-reducing valve |
| CN201672118U (en) * | 2010-05-07 | 2010-12-15 | 常州市汇丰船舶附件制造有限公司 | High pressure gas pressure reducer valve |
| CN201687709U (en) * | 2010-06-08 | 2010-12-29 | 南通市红星空压机配件制造有限公司 | Energy-saving inverse proportion valve |
| CN201884739U (en) * | 2010-11-24 | 2011-06-29 | 广东联塑科技实业有限公司 | Adjustable plastic pressure-reducing valve with double springs |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0895644A (en) * | 1994-09-26 | 1996-04-12 | Shimadzu Corp | Pressure control valve |
-
2011
- 2011-10-18 JP JP2011228675A patent/JP5375921B2/en active Active
-
2012
- 2012-10-16 CN CN201210393654.6A patent/CN103062465B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08253125A (en) * | 1995-03-20 | 1996-10-01 | Daikin Ind Ltd | Direct acting pressure reducing valve |
| CN2274270Y (en) * | 1996-07-11 | 1998-02-11 | 宗绪伦 | Pressure reducer for gas cylinder |
| JPH10246348A (en) * | 1997-03-06 | 1998-09-14 | Fuji Koki Corp | Pressure regulating valve |
| JP3561198B2 (en) * | 2000-01-18 | 2004-09-02 | 矢崎総業株式会社 | Pressure regulator |
| CN201212575Y (en) * | 2008-07-09 | 2009-03-25 | 王晓平 | Pilot double-piston high differential pressure reducing valve |
| CN101749465A (en) * | 2008-12-02 | 2010-06-23 | 上海宇航系统工程研究所 | Double-valve seat pressure-reducing valve |
| CN101625043A (en) * | 2009-08-13 | 2010-01-13 | 凯迈（洛阳）气源有限公司 | High-pressure reducing valve |
| CN201487235U (en) * | 2009-08-17 | 2010-05-26 | 费斯托(中国)有限公司 | Throttling valve |
| CN201672118U (en) * | 2010-05-07 | 2010-12-15 | 常州市汇丰船舶附件制造有限公司 | High pressure gas pressure reducer valve |
| CN201687709U (en) * | 2010-06-08 | 2010-12-29 | 南通市红星空压机配件制造有限公司 | Energy-saving inverse proportion valve |
| CN201884739U (en) * | 2010-11-24 | 2011-06-29 | 广东联塑科技实业有限公司 | Adjustable plastic pressure-reducing valve with double springs |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI623439B (en) * | 2017-05-19 | 2018-05-11 | 致伸科技股份有限公司 | Thermo sensitive printer |
| CN107387828A (en) * | 2017-09-04 | 2017-11-24 | 东莞市旭欧精密五金制品有限公司 | A kind of Depressure valve |
| CN112334273A (en) * | 2018-01-19 | 2021-02-05 | 发克泰克有限责任公司 | Sequence valve in port |
| CN112166275A (en) * | 2018-04-30 | 2021-01-01 | 纽珀有限公司 | Valve operating device |
| CN112166275B (en) * | 2018-04-30 | 2022-12-30 | 纽珀有限公司 | Valve operating device |
| US11739859B2 (en) | 2018-04-30 | 2023-08-29 | Neoperl Gmbh | Valve actuating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013089009A (en) | 2013-05-13 |
| CN103062465B (en) | 2015-05-06 |
| JP5375921B2 (en) | 2013-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103062465A (en) | Pressure adjusting screw mechanism and pressure control valve | |
| EP3631284B1 (en) | Compact gas cylinder valve with residual pressure function | |
| CN104011441B (en) | Relief valve | |
| WO2022001873A1 (en) | Solenoid valve | |
| JP4506496B2 (en) | Pressure reducing valve | |
| CN103993923A (en) | Lash adjuster | |
| KR20160064102A (en) | Gas shut-off device | |
| JP4801375B2 (en) | Air operated valve | |
| JP2014020457A (en) | Electric flow rate regulating valve | |
| CN209800392U (en) | Thread plug-in overflow valve based on Halbach array magnetic block | |
| CN205190406U (en) | Stack one -way throttle valve | |
| JP6232516B1 (en) | Valve drive device and diaphragm valve | |
| JP6066733B2 (en) | Pressure valve | |
| TW201702509A (en) | Valve device | |
| JP4976175B2 (en) | Gas supply connector | |
| JPWO2014115483A1 (en) | Integral power steering system | |
| CN105074300A (en) | Seal valve and method for manufacturing same | |
| KR101512488B1 (en) | Check valves for hydraulic cylinders | |
| CN219975513U (en) | Adjusting component of overflow valve and overflow valve | |
| JP2018076909A (en) | Fluid pressure cylinder | |
| JP6743461B2 (en) | Solenoid valve device and its pressure adjusting method | |
| JP6327774B2 (en) | Master cylinder | |
| CN117515167A (en) | Stop valve | |
| CN106471282A (en) | Chain tensioning device | |
| KR20140140859A (en) | Spindle for an abrasive disk |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |