CN113498461B - Valve element limiter, valve element anti-falling mechanism and valve - Google Patents
Valve element limiter, valve element anti-falling mechanism and valve Download PDFInfo
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- CN113498461B CN113498461B CN201980092927.3A CN201980092927A CN113498461B CN 113498461 B CN113498461 B CN 113498461B CN 201980092927 A CN201980092927 A CN 201980092927A CN 113498461 B CN113498461 B CN 113498461B
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- valve body
- valve
- stopper
- base portion
- spool
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- 230000006835 compression Effects 0.000 claims description 27
- 238000007906 compression Methods 0.000 claims description 27
- 238000004804 winding Methods 0.000 claims description 22
- 238000005452 bending Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000011144 upstream manufacturing Methods 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 11
- -1 and the like) Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
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Images
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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
- Lift Valve (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention reduces the number of components. The spool stopper (40) has: a base section (41) which is formed by forming a wire (40M) into a C-shape and which is fitted into an annular groove section (51) in a fluid flow path (20R) of a valve housing (11); and a center portion (42) that is formed by molding a wire continuous with one end of the base portion (41), and that is disposed on the center portion side of the fluid flow path (20R) to restrict movement of the valve element (30) within the fluid flow path (20R).
Description
Technical Field
The present disclosure relates to a spool stopper that restricts movement of a spool, a spool disengagement prevention mechanism having the spool stopper, and a valve.
Background
Conventionally, as a valve body stopper, there is known a valve body stopper which restricts a movement range of a valve body accommodated in a flow path of a valve housing from a downstream side of the flow path (for example, refer to patent document 1). The valve element stopper is locked from the downstream side by an annular member, and the annular member is fitted into an annular groove portion provided on an inner surface of a flow path of the valve housing.
Prior art documents
Patent document
Patent document 1: japanese patent laid-open No. 2010-185464 (paragraph [0025], FIG. 1)
Disclosure of Invention
Problems to be solved by the invention
In the conventional structure described above, a reduction in the number of components is required.
Means for solving the problems
In order to solve the above problems, a valve body stopper according to an embodiment of the present disclosure includes: a base portion formed by forming a wire into a C-shape and fitted into an annular groove portion in a flow passage of the valve housing; a central portion formed by molding a wire continuous to one end of the base portion, and disposed on a central portion side of the flow path to restrict movement of the valve element within the flow path; and a guide portion provided in the central portion and slidably contacting the protruding portion of the valve body so as to be penetrated by the protruding portion.
Drawings
Fig. 1 is a side sectional view of a valve of a first embodiment of the present disclosure.
Fig. 2 is a side sectional view of the valve with the valve element in an open state.
Fig. 3 is a side sectional view of the valve when the step surface of the valve element abuts against the valve element stopper.
Fig. 4 (base:Sub>A) isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 2, (B) in fig. 4 isbase:Sub>A rear view of the spool stopper, and (C) in fig. 4 isbase:Sub>A front view of the spool stopper.
Fig. 5 (a) is a side sectional view of a valve provided with a spool stopper according to the second embodiment, and fig. 5 (B) is a rear view of the spool stopper according to the second embodiment.
Fig. 6 (a) is a side sectional view of the valve provided with the valve body stopper according to the third embodiment, and fig. 6 (B) is a rear view of the valve body stopper according to the third embodiment.
Fig. 7 (a) is a side sectional view of a valve provided with a spool stopper according to the fourth embodiment, and fig. 7 (B) is a rear view of the spool stopper according to the fourth embodiment.
Fig. 8 (a) is a side sectional view of a valve provided with a spool stopper according to a fifth embodiment, and fig. 8 (B) is a rear view of the spool stopper according to the fifth embodiment.
FIG. 9 is a side cross-sectional view of other embodiments of a valve.
Fig. 10 is a side cross-sectional view of other embodiments of a cartridge retainer.
FIG. 11 is a side cross-sectional view of a valve housing of a valve according to other embodiments.
Fig. 12 is a side cross-sectional view of a valve housing of other embodiments of the valve.
Fig. 13 is a side cross-sectional view of a valve housing of a valve according to other embodiments.
Detailed Description
[ first embodiment ]
The valve 10 of the present embodiment will be described below with reference to fig. 1 to 4. The valve 10 of the present embodiment shown in fig. 1 is a check valve including a valve housing 11 and a valve body 30, the valve housing 11 having a flow passage 20R through which a fluid flows, and the valve body 30 being inserted into the flow passage 20R of the valve housing 11.
The flow passage 20R of the valve housing 11 is formed linearly, and has an inlet port 20A for fluid at one end and an outlet port 20B for fluid at the other end. The valve 10 is used, for example, by connecting the inlet port 20A and the outlet port 20B to a pipe or the like (not shown), or in a state where the entire valve 10 is stored in a middle of the pipe (in this case, the outer peripheral surface of the valve housing 11 and the inner peripheral surface of the pipe are sealed by an O-ring or the like). The valve 10 can also be used as a relief valve by connecting only the inlet 20A to a pipe or the like. Examples of the fluid flowing through the flow path 20R of the valve housing 11 include, but are not limited to, a refrigerant, a heat medium, and fuel, and more specifically, water (pure water, engine cooling water (LLC), and the like), oil, and gas (air, natural gas, hydrogen, and the like).
A valve port 24 formed by reducing the diameter of the flow path 20R toward the inflow port 20A (upstream side) is provided in a middle portion of the flow path 20R. Further, an annular protrusion 29 protruding inward is provided in the expanded diameter portion 22 of the flow path 20R adjacent to the valve port 24 from the outlet port 20B side (downstream side), and an annular groove 51 is formed in the inner peripheral surface of the annular protrusion 29. The valve case 11 may be made of metal such as aluminum, stainless steel, iron (e.g., plated iron), copper, or the like, or resin.
The valve body 30 is housed in the enlarged diameter portion 22, and the valve body 30 linearly moves along the flow path 20R to open and close the valve port 24 from the downstream side. Specifically, the valve body 30 is disposed in a closed state (see fig. 1) in which the valve port 24 is closed by abutting against an opening edge of the valve port 24, and in an open state (see fig. 2 and 3) in which the valve port 24 is opened by being separated from the opening edge of the valve port 24 on the downstream side. The valve body 30 is biased from the downstream side to the valve port 24 (i.e., biased so that the valve port 24 is closed) by a compression coil spring 19 described later.
As shown in fig. 1, the spool 30 includes: a disc-shaped valve body base 31; a valve body protrusion 32 protruding from the valve body base 31 to one side in the axial direction; and a leg portion 33 that protrudes from the valve element base portion 31 to the other side in the axial direction. Specifically, the valve body protrusion 32 is formed in a circular cross-sectional shape having a smaller diameter than the valve body base 31, and is disposed coaxially with the valve body base 31. The spool projecting portion 32 has a stepped surface 32D in which the projecting tip end side is reduced in diameter at a halfway position in the projecting direction, and includes a small diameter portion 32A on the projecting tip end side of the stepped surface 32D and a large diameter portion 32B on the base end side of the stepped surface 32D. The outer peripheral surface of the leg portion 33 is disposed on an imaginary cylindrical surface coaxial with the valve body base portion 31 and having a smaller diameter than the valve body base portion 31. An annular groove is provided on the outer peripheral surface of the root portion of the leg portion 33, which is formed to have a circular cross section, and the O-ring 18 is fitted in the annular groove. The O-ring 18 seals between the port 24 and the valve cartridge 30 when the valve cartridge 30 is configured in the closed state. The leg portion 33 is provided with a plurality of (for example, three) independent projections 34 extending away from the valve body base portion 31 and arranged around the central axis of the valve body base portion 31. In the plurality of independent protrusions 34, a surface facing the outside in the radial direction of the valve body base 31 is an arc surface located on the imaginary cylindrical surface. The O-ring 18 may be made of hydrogenated nitrile rubber (HNBR), ethylene Propylene Diene Monomer (EPDM), nitrile rubber (NBR), chloroprene rubber, butyl rubber, urethane rubber, silicone rubber, fluorine rubber, acrylic rubber, or the like.
The valve body 30 is disposed in the flow path 20R with the valve body protrusion 32 on the downstream side. The leg portion 33 is fitted to the upstream small diameter portion 21, and the upstream small diameter portion 21 is provided upstream of the valve port 24 with respect to the diameter-enlarged portion 22 in the flow path 20R. The valve body 30 may be made of a resin such as Polyamide (PA) resin, polyphenylene sulfide (PPS) resin, polybutylene terephthalate (PBT) resin, polyether ether ketone (PEEK) resin, or Polyoxymethylene (POM) resin, or may be made of a metal such as aluminum, stainless steel, iron (e.g., plated iron), or copper.
In the valve 10 of the present embodiment, as shown in fig. 1, a valve body stopper 40 is housed in the flow path 20R, and the valve body stopper 40 restricts the movement range of the valve body 30 from the downstream side, thereby preventing the valve body 30 from coming off. Specifically, the valve body stopper 40 is locked to the annular groove portion 51 on the inner peripheral surface of the enlarged diameter portion 22 of the flow path 20R. The valve body stopper 40 is formed by molding a wire 40M (see fig. 4B). In the present embodiment, the wire 40M is formed to have a circular cross section. The wire 40M may be made of a metal such as aluminum, stainless steel, iron (e.g., plated iron), or copper.
Specifically, as shown in fig. 4 (B) and 4 (C), the spool stopper 40 includes: a base portion 41 formed by forming the wire 40M into a C shape; and a center portion 42 disposed inside the base portion 41.
The center portion 42 is constituted by a wire 40M continuous with one end of the base portion 41. Specifically, the center portion 42 includes: a central winding portion 45 formed by winding the wire 40M around a concentric axis of the base portion 41; and a connecting portion 43 extending linearly inward from one end of the base portion 41 and connected to the central winding portion 45. In the present embodiment, the central winding portion 45 is wound so as to be apart from the base portion 41 in the axial direction of the valve body stopper 40 from the extending tip end of the connecting portion 43, for example, by about one half to two turns.
The other end portion of the base portion 41 of the valve body stopper 40 is bent inward to become an inwardly bent end portion 44. In the inner curved end portion 44, the end surface 44E of the wire 40M faces the inside of the base portion 41.
As shown in fig. 1, the valve body stopper 40 is attached to the valve housing 11 by fitting the base portion 41 into the annular groove portion 51 of the valve housing 11. The central winding portion 45 of the central portion 42 is disposed in the central portion of the flow path 20R in a state where the base portion 41 is accommodated in the annular groove portion 51. Further, a spool protrusion 32 (specifically, a small diameter portion 32A) of the spool 30 penetrates inside the central winding portion 45 of the spool stopper 40.
In the present embodiment, the annular groove portion 51 has a square groove shape. In a state where the base portion 41 is fitted in the annular groove portion 51, the center of the cross section of the wire rod 40M having a circular cross section constituting the base portion 41 is positioned in the annular groove portion 51, and a part of the base portion 41 is positioned inside the flow passage 20R from the groove opening of the annular groove portion 51. This makes it easy to hold the base portion 41 in the annular groove portion 51, and also makes it unnecessary to make the annular groove portion 51 too deep, so that it is easy to ensure the strength of the portion of the valve housing 11 disposed radially outward of the annular groove portion 51.
The base portion 41 of the valve body stopper 40 is formed to have a diameter larger than the inner diameter of the annular projection 29 of the valve housing 11. Therefore, when the valve element stopper 40 is attached to the valve housing 11 from the outlet port 20B on the downstream side of the flow passage 20R, the base 41 is inserted into the annular projection 29 in a state of being elastically deformed so as to be accommodated inside the annular projection 29 (this deformation may not be a complete elastic deformation, and may include a partial plastic deformation). Then, the base portion 41 is elastically restored in the annular groove portion 51, whereby the base portion 41 is fitted into and held in the annular groove portion 51. Since the base portion 41 is formed of the wire 40M in this manner, the base portion 41 can be easily elastically deformed, and the valve body stopper 40 can be easily attached.
As shown in fig. 1, in the valve 10 of the present embodiment, the compression coil spring 19 is sandwiched between the spool stopper 40 and the spool 30 in a supported state. Specifically, as shown in fig. 1 and 4 (a), the compression coil spring 19 is disposed so as to surround the valve body protrusion 32, and abuts against the connection portion 43 of the valve body stopper 40 and the valve body base portion 31 of the valve body 30. The compression coil spring 19 is fitted to the large diameter portion 32B of the spool protrusion 32 of the spool 30 from the outside. The compression coil spring 19 is also fitted to the central winding portion 45 of the valve body stopper 40 from the outside. That is, the outer peripheral portion of the central winding portion 45 is a spring fitting portion 47 to which the compression coil spring 19 is fitted. In the present embodiment, the compression coil spring 19 is formed of a wire material having a smaller wire diameter than the wire material 40M constituting the valve body stopper 40. The compression coil spring 19 may be made of a metal such as stainless steel, iron, copper, or aluminum.
As described above, the compression coil spring 19 biases the valve body 30 to the closed state. When the pressure of the fluid in the flow path 20R on the upstream side of the port 24 overcomes the restoring force of the compression coil spring 19 and moves the valve body 30 to the downstream side, the valve body 30 is in an open state as shown in fig. 2, and the fluid flows from the upstream side of the port 24 to the downstream side. At this time, the leg portion 33 of the spool 30 slides along the upstream small diameter portion 21 of the first flow path, whereby the linear motion of the spool 30 is guided. The valve body 30 is also guided by the small diameter portion 32A of the valve body protrusion portion 32 of the valve body 30 sliding in contact with the inner peripheral portion of the central winding portion 45 of the valve body stopper 40. That is, the inner peripheral portion of the central winding portion 45 serves as a guide portion 46 for guiding the movement of the valve body 30. The same applies to the case where the valve body 30 is returned from the open state to the closed state. When the valve body 30 is in the open state, the fluid passes through the valve port 24 through the gaps between the plurality of independent protrusions 34 of the leg portion 33.
As shown in fig. 3, when the valve body 30 is further moved to the downstream side against the restoring force of the compression coil spring 19 by the pressure of the fluid on the upstream side of the valve port 24, the valve body 30 abuts against the valve body stopper 40. Specifically, at this time, the step surface 32D of the spool protrusion 32 of the spool 30 abuts against the central portion 42 (central winding portion 45) of the spool stopper 40. This restricts the movement of the valve body 30 to the downstream side. Here, in the valve body stopper 40, the center portion 42 is supported by the valve body base portion 31 in a cantilever manner by the connecting portion 43, and therefore the valve body stopper 40 can receive the valve body 30 while being elastically deformed. Therefore, the impact due to the contact with the valve body 30 can be gradually buffered by the valve body stopper 40. Further, since the central portion 42 is supported by the base portion 41 in a cantilever manner, the flow passage area of the fluid passing through the inside of the base portion 41 can be increased as compared with the case of the double support. In the present embodiment, the valve element stopper 40 and the annular groove portion 51 constitute a valve element retaining mechanism 50 for retaining the valve element 30.
In the present embodiment, the spool protrusion 32 and the leg portion 33 of the spool 30 are held in a state of being inserted through the central winding portion 45 of the spool stopper 40 and the upstream small diameter portion 21 of the flow passage 20R, respectively, in the range of the linear motion of the spool 30. That is, the valve body 30 is supported at both ends during the linear movement, and therefore, the linear movement of the valve body 30 is stabilized.
In the present embodiment, the valve body stopper 40 integrally includes: a C-shaped base portion 41 fitted into an annular groove portion 51 in the flow passage 20R of the valve housing 11; and a center portion 42 that restricts the movement of the valve body 30, and therefore, the number of components can be reduced as compared with a conventional structure in which a valve body stopper is attached to the valve housing 11 by another member. Further, since the valve body stopper 40 is formed by molding the wire material 40M, the degree of freedom of the shape of the valve body stopper 40 can be increased. Further, according to the valve body stopper 40 of the present embodiment, since a forming die is not required for forming the valve body stopper 40, the yield can be improved and the cost can be reduced.
In the valve body stopper 10 of the present embodiment, the other end portion of the base portion 41 is bent inward to form the inwardly bent terminal portion 44, and in the inwardly bent terminal portion 44, the end surface of the wire 40M faces the center portion side of the flow passage 20R. Therefore, the inner surface of the flow path 20R can be prevented from being damaged by the end surface of the wire 40M, for example, at the time of mounting the valve body stopper 40. This can prevent chips generated when the inner surface of the flow path 20R is damaged from becoming foreign matter, and can also prevent a sealing portion of the inner surface of the flow path 20R from being damaged and causing a sealing failure. In the present embodiment, the end portion of the wire material 40M constituting the valve body stopper 40 opposite to the end portion 44 of the inflexion is provided on the central winding portion 45 and disposed inside the base portion 41, and therefore, the inner surface of the flow path 20R can be prevented from being damaged by the end portion of the wire material 40M. Further, since the wire 40M is formed to have a circular cross section, the inner surface of the flow path 20R can be made less susceptible to damage than in the case of being formed to have a polygonal cross section.
Further, by providing the end portion 44, the end portion 44 can be easily gripped or hooked by a tool or the like, and the valve stopper 40 can be easily detached from the valve housing 11 when replacing the valve stopper 40. In addition, in the present embodiment, since the central portion 42, the connection portion 43, and the like of the valve body stopper 40 are easily gripped or hooked by a tool or the like, the valve body stopper 40 can be more easily detached from the valve housing 11.
In the present embodiment, since the guide portion 46 that slides in contact with the valve body 30 is provided in the center portion 41 of the valve body stopper 40, the movement of the valve body 30 can be guided by the valve body stopper 40. The valve body 30 is guided by the inside of the central winding portion 45 of the valve body stopper 40, and the compression coil spring 19 is fitted to the outside of the central winding portion 45. This allows both the guide of the valve body 30 and the positioning of the compression coil spring 19 to be achieved by the center wound portion 45 of the valve body stopper 40.
In the present embodiment, the wire diameter of the compression coil spring 19 is smaller than the wire diameter of the valve body stopper 40. This can ensure the strength of the valve body stopper 40, while easily moving the valve body 30 against the biasing force of the compression coil spring 19 by the pressure in the flow path 20R of the valve housing 11.
[ second embodiment ]
The present embodiment is an embodiment obtained by modifying the structure of the valve element stopper and the valve element with respect to the first embodiment. As shown in fig. 5 (a) and 5 (B), the valve body stopper 40V of the present embodiment is formed of a continuous wire 40M and has a base portion 41 similar to that of the first embodiment. The valve body stopper 40V is provided with a center portion 42V that is bent from one end of the base portion 41 toward the inside of the base portion 41 and extends linearly. Specifically, the central portion 42V extends from one end of the base portion 41 to a position passing through the center of the base portion 41, and the tip of the central portion 42V is disposed inside the base portion 41.
In the present embodiment, the valve body 30 has a structure of the valve body protrusion 37 different from that of the valve body protrusion 32 of the first embodiment. Specifically, the valve body protrusion 37 is formed in a shape in which the tip end of the round rod is split by the tip end groove portion 37U. The center portion 42V of the valve body stopper 40V is loosely fitted in the front end groove portion 37U of the valve body 30. Thus, the center portion 42V of the valve element stopper 40 is brought into sliding contact with the front end groove portion 37U of the valve element 30, whereby the opening and closing operation of the valve element 30 that linearly moves along the flow path 20R to open and close the valve port 24 can be guided. When the valve body 30 moves further to the downstream side against the biasing force of the compression coil spring 19 by the pressure from the upstream side, the movement of the valve body 30 can be restricted because the center portion 42V of the valve body stopper 40 abuts against the groove bottom of the front end groove portion 37U of the valve body 30. In the present embodiment, the contact portion of the valve body stopper 40V with the compression coil spring 19 is the center portion 42V. The present embodiment can also provide the same effects as those of the first embodiment.
[ third embodiment ]
The present embodiment is an embodiment obtained by modifying the structure of the valve body with respect to the second embodiment described above (the structure of the valve body stopper 40V is the same). As shown in fig. 6 (a) and 6 (B), in the valve body 30 of the present embodiment, the valve body protrusion 37 is formed in a cylindrical shape, and the compression coil spring 19 is housed therein. The compression coil spring 19 abuts against the inner surface 38 of the inner portion of the valve body protrusion 37 and the central portion 42V of the valve body stopper 40V. In the present embodiment, as in the second embodiment, a tip groove portion 37U is formed at the projecting tip of the valve body projecting portion 37. Further, as in the second embodiment, the opening and closing operation of the valve body 30 can be guided by the center portion 42V of the valve body stopper 40V, and when the valve body 30 moves further to the downstream side, the movement of the valve body 30 can be restricted because the center portion 42V of the valve body stopper 40V abuts against the groove bottom of the front end groove portion 37U of the valve body 30.
[ fourth embodiment ]
The present embodiment is an embodiment obtained by modifying the structure of the valve body stopper with respect to the third embodiment described above (the structure of the valve body 30 is the same). As shown in fig. 7 (a) and 7 (B), the valve body stopper 40W of the present embodiment is formed of a continuous wire 40M and has a base portion 41 and a central portion 42W as in the third embodiment. A bent portion 48 extends from the front end of the central portion 42W. In the present embodiment, the bent portion 48 is substantially orthogonal to the central portion 42W, and extends so as to gradually become distant from the base portion 41 toward the upstream side as it goes toward the distal end side. More specifically, the extended distal end portion of the bent portion 48 overlaps the base portion 41 as viewed in the axial direction of the base portion 41, and is disposed inside the outer peripheral portion of the base portion 41 (see fig. 7B).
As in the third embodiment, in the present embodiment, the opening and closing operation of the valve body 30 can be guided by the central portion 42W of the valve body stopper 40W, and when the valve body 30 moves further downstream, the movement of the valve body 30 can be restricted because the central portion 42W of the valve body stopper 40W abuts against the groove bottom of the front end groove portion 37U of the valve body 30. Here, in the valve body stopper 40W of the present embodiment, when the central portion 42W is pressed by the groove bottom of the leading end groove portion 37U of the valve body 30 and the central portion 42W is elastically deformed toward the downstream side, the extended leading end portion of the bent portion 48 abuts on the base portion 41 from the upstream side. Thereby, the central portion 42W is doubly supported by the base portion 41, and the central portion 42W is prevented from being further deformed toward the downstream side, and the restriction of the movement of the valve body 30 is stabilized.
[ fifth embodiment ]
The present embodiment is an embodiment obtained by modifying the structure of the valve element stopper and the valve element with respect to the first embodiment. Specifically, as shown in fig. 8 (a) and 8 (B), the valve body stopper 40X of the present embodiment is constituted by a continuous wire 40M and has a C-shaped base portion 41, as in the above-described embodiment. The valve body stopper 40X is provided with a pair of center portions 42X that are bent from both ends of the base portion 41 toward the inside of the base portion 41 and extend substantially parallel to each other. Specifically, the pair of central portions 42X extend from both ends of the base portion 41 to positions that pass through the center of the base portion 41, and the tip end of each central portion 42X is disposed inside the inner peripheral portion of the base portion 41.
In the present embodiment, the small diameter portion 32A of the valve body protrusion portion 32 of the valve body 30 is formed in a plate-like shape, and the small diameter portion 32A is loosely fitted in a state sandwiched between the pair of center portions 42X of the valve body stopper 40X in the plate thickness direction. In the present embodiment, the pair of center portions 42X of the valve element stopper 40X can guide the opening and closing operation of the valve element 30 by sliding in contact with the small diameter portion 32A of the valve element 30. When the spool 30 further moves to the downstream side, the pair of center portions 42X of the spool stopper 40X abut against the step surface 32D of the spool 30, and the movement of the spool 30 can be restricted. In the present embodiment, since the pair of center portions 42X that abut against the valve body 30 is provided, the restriction of the movement of the valve body 30 is stabilized.
[ other embodiments ]
(1) In the above embodiment, the valve body stopper 40 is independent of the compression coil spring 19, but as shown in fig. 9, the valve body stopper 40R may be configured to integrally include the compression coil spring 19V. In this case, the spool stopper 40R including the compression coil spring 19V is formed by forming a continuous wire. In this way, the molding is easier than molding the valve element stopper and the compression coil spring separately. In the example of fig. 9, the compression coil spring 19V is a conical coil spring whose diameter increases gradually as it goes toward the valve body base portion 31 of the valve body 30.
(2) In the above embodiment, the wire 40M and the annular groove portion 51 constituting the valve body stopper 40 are formed to have circular cross sections, but the wire 40M and the annular groove portion 51V constituting the valve body stopper 40Y may be formed to have quadrangular cross sections as shown in fig. 10. With this structure, the base portion 41 can be made less likely to be detached from the annular groove portion 51V. In addition, by forming the wire 40M to have a circular cross section and forming the annular groove portion 51 to have a quadrangular cross section as in the first embodiment, the base portion 41 can be made less likely to be detached from the annular groove portion 51.
(3) As shown in fig. 11, the valve housing 11 may be formed of a plurality of members. In the example of the figure, the valve casing 11 includes an upstream-side formation 13 and a downstream-side formation 14, and these formations 13 and 14 are divided with the vicinity of the annular groove portion 51 as a boundary. Specifically, the opening edge of the flow path 20R is recessed into the end surface (i.e., the split surface) on the downstream side of the upstream-side constituent 13, and the annular groove 51 is formed when the two constituents 13 and 14 are combined by the recessed portion. With this structure, the annular groove 51 can be easily formed.
(4) As in the annular groove portion 51Z of the valve housing 11 shown in fig. 12, the groove side wall on the downstream side of the annular groove portion 51Z may be formed by caulking the annular projecting piece 15 projecting downstream from the inner surface of the flow passage 20R so as to stand inside the flow passage 20R.
(5) As shown in fig. 13, the annular groove portion 51V of the valve housing 11 may have a circular groove shape corresponding to the wire 40M formed to have a circular cross section. In this case, in a state where the base portion 41 is fitted in the annular groove portion 51V, the center of the cross section of the wire 40M constituting the base portion 41 may be positioned in the annular groove portion 51V, and a part of the base portion 41 may be positioned inside the flow passage 20R from the groove opening of the annular groove portion 51V. This makes it easy to hold the base portion 41 in the annular groove portion 51V, and also makes it unnecessary to make the annular groove portion 51V too deep, so that it is easy to secure the strength of the portion of the valve housing 11 disposed radially outward of the annular groove portion 51V.
Description of the reference numerals
10. Valve with a valve body
11. Valve casing
19. Compression coil spring
30. Valve core
40. Valve core limiter
40M wire rod
41. Base part
42. Center part
51. An annular groove portion.
Claims (7)
1. A cartridge retainer, comprising:
a base portion formed by forming a wire into a C-shape and fitted into an annular groove portion in a flow passage of the valve housing;
a central portion formed by molding a wire continuous to one end of the base portion, and disposed on a central portion side of the flow path to restrict movement of the valve element within the flow path; and
and a guide portion provided in the central portion and slidably contacting the protrusion of the valve body so as to be penetrated by the protrusion.
2. The spool limiter of claim 1,
the spool stopper includes an inwardly bent end portion formed by bending the other end portion of the base portion inward, and having an end surface of the wire rod facing toward a central portion of the flow path.
3. The cartridge retainer of claim 1 or 2,
a central winding portion formed by winding the wire rod around a concentric axis of the base portion is provided in the central portion, the guide portion being formed inside the central winding portion,
the outer side of the central winding portion is a spring fitting portion into which a compression coil spring abutting on the valve body is fitted.
4. The spool limiter according to any one of claims 1 to 3,
the central portion is provided with a central winding portion formed by winding the wire rod by half to two turns on a concentric axis of the base portion, and the guide portion is formed inside the central winding portion.
5. A valve element retaining mechanism includes:
the spool limiter of any one of claims 1 to 4; and
the annular groove portion into which the base portion of the valve element stopper is fitted,
wherein,
the wire forming the spool stop is formed to be circular in cross-section,
the center of the wire of the base portion is located in the groove of the annular groove portion, and a part of the base portion is located inside the flow path from the groove opening of the annular groove portion.
6. A valve element retaining mechanism includes:
the spool limiter of any one of claims 1 to 4; and
the annular groove portion into which the base portion of the valve element stopper is fitted,
wherein,
the wire forming the spool stopper and the annular groove portion are formed in a quadrangular shape in section.
7. A valve, comprising:
the spool limiter of any one of claims 1 to 4;
a valve housing having a flow path for accommodating the valve element stopper and having the annular groove portion into which the base portion of the valve element stopper is fitted;
a valve element housed in the flow path; and
and a compression coil spring which is supported between the valve body and the valve body stopper and is formed of a wire rod having a smaller wire diameter than the valve body stopper.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/026747 WO2021002026A1 (en) | 2019-07-04 | 2019-07-04 | Valve element stopper, valve element retention mechanism, and valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113498461A CN113498461A (en) | 2021-10-12 |
| CN113498461B true CN113498461B (en) | 2023-03-31 |
Family
ID=74100308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980092927.3A Active CN113498461B (en) | 2019-07-04 | 2019-07-04 | Valve element limiter, valve element anti-falling mechanism and valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7195433B2 (en) |
| CN (1) | CN113498461B (en) |
| WO (1) | WO2021002026A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57160456U (en) * | 1981-04-03 | 1982-10-08 | ||
| JPS59181377U (en) * | 1983-05-20 | 1984-12-04 | 株式会社 田「淵」製作所 | check valve valve body |
| JPH01188779A (en) * | 1988-01-25 | 1989-07-28 | Matsushita Electric Ind Co Ltd | Check valve for hot water feeder |
| JP2833123B2 (en) * | 1990-03-23 | 1998-12-09 | 松下電器産業株式会社 | Check valve |
| JP2553349Y2 (en) * | 1991-06-28 | 1997-11-05 | 株式会社フジユニバンス | Valve structure |
| US6206032B1 (en) * | 2000-07-11 | 2001-03-27 | James H. Hill | High pressure check valve fittings |
| DE102016202430A1 (en) * | 2016-02-17 | 2017-08-17 | Schaeffler Technologies AG & Co. KG | Check valve and control system |
| CN108884957B (en) * | 2016-04-07 | 2020-07-10 | 日东工器株式会社 | Pipe joint member having valve element and coil spring used in the pipe joint member |
| CN207921412U (en) * | 2017-12-29 | 2018-09-28 | 赛威隆机电设备河北有限公司 | A kind of minute-pressure startup check valve |
-
2019
- 2019-07-04 CN CN201980092927.3A patent/CN113498461B/en active Active
- 2019-07-04 WO PCT/JP2019/026747 patent/WO2021002026A1/en active Application Filing
- 2019-07-04 JP JP2021529880A patent/JP7195433B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2021002026A1 (en) | 2021-01-07 |
| CN113498461A (en) | 2021-10-12 |
| WO2021002026A1 (en) | 2021-01-07 |
| JP7195433B2 (en) | 2022-12-23 |
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