WO2017126134A1 - バルブコア - Google Patents
バルブコア Download PDFInfo
- Publication number
- WO2017126134A1 WO2017126134A1 PCT/JP2016/058958 JP2016058958W WO2017126134A1 WO 2017126134 A1 WO2017126134 A1 WO 2017126134A1 JP 2016058958 W JP2016058958 W JP 2016058958W WO 2017126134 A1 WO2017126134 A1 WO 2017126134A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- core cylinder
- valve
- fitting
- cylinder
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C29/00—Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for
- B60C29/002—Arrangements of tyre-inflating valves to tyres or rims; Accessories for tyre-inflating valves, not otherwise provided for characterised by particular features of the valve core
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- 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
- F16K15/06—Check valves with guided rigid valve members with guided stems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
-
- 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
- F16K15/20—Check valves specially designed for inflatable bodies, e.g. tyres
- F16K15/205—Check valves specially designed for inflatable bodies, e.g. tyres and with closure plug
Definitions
- the present invention relates to a valve core that is screwed into a core mounting hole.
- valve core having a first core cylindrical body having a male screw portion on the outer peripheral surface and a second core cylindrical body having a seal portion on the outer peripheral surface rotatably connected thereto.
- the core mounting hole is provided with a reduced diameter portion on the back side of the female screw portion.
- the above-described conventional valve core is provided with a caulking engagement portion formed by caulking a part of the fitting portion in order to prevent separation between the first core cylinder and the second core cylinder.
- a caulking engagement portion formed by caulking a part of the fitting portion in order to prevent separation between the first core cylinder and the second core cylinder.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a valve core capable of reducing the manufacturing cost.
- the invention of claim 1 is directed to a first core cylinder having a male screw part screwed into a female screw part of a core mounting hole, and the core mounting from the first core cylinder.
- a second core cylinder disposed on the back side of the hole and having an opening on the opposite side of the first core cylinder as a valve opening; and provided in the second core cylinder, An outer peripheral seal portion that is in close contact with the inner portion of the female screw portion, and a valve body that opens and closes the valve port at the tip of a shaft portion that passes through the insides of the first core cylinder and the second core cylinder so as to be capable of linear movement.
- a movable member comprising: a movable member, abutting against the movable member and the first core cylinder, and urging the second core cylinder to be sandwiched between the first core cylinder and the valve body.
- a fitting portion of the pair comprising a first fitting portion may separate the second engagement portion in a valve core having.
- the pair of fitting portions has a cylindrical shape that is detachably fitted to each other, and the first fitting portion has a tip end surface of the second fitting portion.
- the invention of claim 3 is the valve core according to claim 1 or 2, wherein the outer peripheral seal portion is formed by coating the second core cylinder with a sealing material.
- the valve port is provided with a tapered inner surface that gradually increases in diameter toward the valve body side and abuts on the valve body, and the sealing material that constitutes the outer peripheral seal portion includes: The valve core according to claim 3, wherein the tapered inner surface is coated.
- the first fitting portion is formed by expanding the diameter of the first core cylinder side in a stepped manner from the tapered inner surface of the inner peripheral surface of the second core cylinder.
- the tip end surface of the second fitting portion is in contact with the step surface of the first fitting portion, and the tapered inner surface of the second core cylinder body is more tapered than the step surface.
- the invention of claim 6 is characterized in that the second fitting portion is formed by reducing the diameter of the first core cylinder side of the outer peripheral surface of the second core cylinder into a stepped shape. It is comprised so that the front end surface of the said 2nd fitting part may contact
- the invention according to claim 7 is the valve core according to any one of claims 1 to 6, wherein a fitting depth of the pair of fitting portions is larger than a linear motion stroke of the movable member.
- the invention according to claim 8 includes a spring locking portion formed by expanding a diameter of an end portion on the opposite side of the valve body in the shaft portion, and the elastic member is inserted into the shaft portion, and one end portion is 8.
- the compression coil spring which is locked to a spring locking portion and whose other end is locked to an end of the first core cylinder opposite to the second core cylinder.
- the elastic force of the movable member is not only used as the urging force for valve closing, but also the holding for preventing the separation of the first core cylinder and the second core cylinder. It is also used as power.
- the structure without the conventional caulking engagement portion can be used to eliminate the caulking work, and the manufacturing cost of the valve core can be reduced.
- the pair of fitting portions including the first fitting portion and the second fitting portion may have a tapered shape that fits each other. Further, as in the configuration of the second aspect, the pair of fitting portions including the first fitting portion and the second fitting portion have a cylindrical shape that is detachably fitted to each other. It is good also as a structure provided with the level
- the outer peripheral seal portion may be constituted by a ring for sealing received in an annular groove on the outer peripheral surface of the second core cylinder. Further, as in the configuration of claim 3, the outer peripheral seal portion may be configured by coating the second core cylinder with a sealing material. By doing so, it is possible to reduce the labor of assembling as compared with the assembly of the sealing ring and to suppress the manufacturing cost. Further, the second core cylinder may be made of a metal having a hardness different from that of the metal of the counterpart member having the core mounting hole, and a part of the second core cylinder may be used as the outer peripheral seal portion for the metal seal. Even if it is such a structure, the effort of an assembly
- the elastic member it may be a tension coil spring or a compression coil spring, and as an example of use of the compression coil spring, as in the invention of claim 8, a spring locking portion is provided at the end of the shaft portion opposite to the valve body, There is a configuration in which the compression coil spring is inserted into the shaft portion and one end portion is locked to the spring locking portion while the other end portion is locked to the end portion of the first core cylinder.
- the seal portion between the valve body and the valve port and the seal portion between the valve core and the inner surface of the core mounting hole are once coated by the sealing material on the second core cylinder.
- the manufacturing cost can be reduced.
- a 2nd fitting part is fitted to the 1st fitting part or 2nd fitting part of a 2nd core cylinder, and it coats, and it is 2nd. It is possible to prevent the sealing material from adhering to the contact portion of the core cylinder with the first core cylinder.
- reference numeral 10 denotes a valve stem, which has a cylindrical shape extending from a tire (not shown), and the inner side thereof is a core mounting hole 11 that communicates with the internal space of the tire.
- a female screw portion 12 is formed at a position near the opening of the core mounting hole 11, and a reduced diameter portion 13 that gradually decreases in diameter as the distance from the female screw portion 12 is provided.
- a male screw portion 14 for screwing and mounting a cap (not shown) is formed on the outer peripheral surface of the valve stem 10.
- the valve core 40 is screwed into the core mounting hole 11.
- the valve core 40 includes a first core cylinder 20, a second core cylinder 25, a movable member 30, and a compression coil spring 35.
- the first core cylinder 20 includes a fitting portion 21, a base portion 22, and a gate portion 23 that are arranged side by side from one end in the axial direction toward the other end.
- the base portion 22 has a disk shape having a through hole in the center, and has a male screw portion 22N on the outer peripheral surface.
- the gate portion 23 has a gate structure in which a bridging portion is bridged between a pair of pillars standing upright from two positions 180 degrees apart on one end surface of the base portion 22.
- a shaft guide hole 23 ⁇ / b> A along the central axis of the base portion 22 passes through the center of the bridging portion.
- a male screw portion 23N having the same diameter and the same pitch as the male screw portion 22N of the base portion 22 is formed on the outer peripheral surface of the gate portion 23.
- the fitting portion 21 has a cylindrical shape, and the outer diameter of the fitting portion 21 is smaller than the valley diameter of the male screw portion 22N in the base portion 22.
- the first core cylinder 20 is formed by cutting a metal cylinder as follows. That is, for example, a first center hole having a circular cross section is formed from one end to the other end of the cylindrical body, and the shaft guide hole 23A having an inner diameter smaller than that of the first center hole is formed in the remaining portion. Further, after the male screw portions 22N and 23N are formed in the substantially central portion in the axial direction on the outer peripheral surface of the cylindrical body and the other end side portion from the central portion, the other end side from the central portion in the axial direction of the cylindrical body. In the portion, as shown in FIG. 4, both sides sandwiching the shaft guide hole 23A in the radial direction are cut out to form the gate portion 23. Further, as shown in FIG.
- the fitting portion 21 is formed by cutting the cylindrical body so that the outer diameter on one end side from the male screw portion 22N is reduced to a stepped shape.
- the portion left between the gate portion 23 becomes the base portion 22.
- the outer edge corner portion of the front end surface of the fitting portion 21 is chamfered so as to have a rounded shape.
- the second core cylinder 25 includes a fitting portion 26 and a base portion 27 arranged on the same axis.
- the fitting portion 26 has an inner diameter that is larger than the base portion 27 in a stepped shape, and has a step surface 26 ⁇ / b> B between the fitting portion 26 and the base portion 27.
- the inner diameter from one end on the stepped surface 26B side to a position near one end of the inside of the base portion 27 is a uniform cylindrical surface, and the tapered inner surface 27T whose inner diameter gradually increases from the cylindrical surface to the other end.
- the inside of the base portion 27 is a valve port 29 according to the present invention.
- the outer diameter of the entire second core cylinder 25 is uniform, and the tip on the base portion 27 side is chamfered with the outer edge portion rounded to form a corner curved portion 27K.
- the front end portion on the fitting portion 26 side is chamfered so that the inner edge portion is rounded.
- a gap is formed between the front end surface 26A of the fitting portion 26 of the second core cylinder 25 and the step surface 21B of the fitting portion 21 of the first core cylinder 20.
- the fitting portion 26 of the second core cylinder 25 corresponds to the “first fitting portion” of the present invention
- the fitting portion 21 of the first core cylinder 20 of the present invention “ This corresponds to the “second fitting portion”.
- the entire base portion 27 is coated with a sealing material 28 (for example, vulcanized rubber or urethane rubber).
- a sealing material 28 for example, vulcanized rubber or urethane rubber.
- the sealing material 28 seals between the inner surface of the core mounting hole 11 and the valve core 40, and between the tapered inner surface 27 ⁇ / b> T and a valve body 33 described later.
- the movable member 30 includes a valve body 33 at one end of a shaft portion 31 that passes through the central portions of the first core cylinder 20 and the second core cylinder 25, and a spring locking portion 32 at the other end.
- the valve body 33 includes a tapered portion 33T that gradually increases in diameter from the shaft portion 31, and a cylindrical portion 34 that extends from the large-diameter end of the tapered portion 33T.
- the gradient of the tapered portion 33T with respect to the central axis of the shaft portion 31 is larger than the gradient of the tapered inner surface 27T of the second core cylinder 25 with respect to the central axis of the shaft portion 31.
- the boundary part between the taper part 33T and the cylindrical part 34 contact
- the spring locking portion 32 has a hook shape protruding laterally from the shaft portion 31, and the outer diameter of the spring locking portion 32 is larger than the inner diameter of the shaft guide hole 23A.
- the compression coil spring 35 is inserted into the shaft portion 31 in a compressed state between the spring locking portion 32 and the gate portion 23. Then, the elastic force of the compression coil spring 35 is used as an urging force for closing the valve port 29 by the valve body 33, and for preventing separation of the first core cylinder body 20 and the second core cylinder body 25. It is also used as a holding force.
- the fitting depths of the fitting portions 21 and 26 are deeper than the linear motion stroke of the movable member 30.
- valve core 40 is assembled in the core mounting hole 11 as follows. That is, the valve core 40 is rotated while being inserted into the core mounting hole 11 from the second core cylinder 25 side. Then, the valve core 40 moves to the inner side of the core mounting hole 11 due to the threaded engagement between the male screw portions 22N and 23N of the valve core 40 and the female screw portion 12 of the core mounting hole 11, and eventually the second core as shown in FIG.
- the outer peripheral seal portion 41 of the cylindrical body 25 comes into contact with the reduced diameter portion 13 of the core mounting hole 11 and the rotation of the second core cylindrical body 25 stops.
- the core mounting hole 11 to which the valve core 40 is attached is normally closed by the valve core 40. Then, when air having a higher pressure than the inside of the tire is applied from the front end side of the core mounting hole 11, the valve core 40 is opened and air is supplied to the tire as shown in FIG. Further, the valve core 40 can be opened by pushing down the movable member 30, and the tire air can be extracted.
- valve core 40 is manufactured as follows.
- a second core cylinder 25 that is not coated with the sealing material 28, a movable member 30 that is not formed with the spring locking portion 32, a first core cylinder 20 and the movable member 30 are prepared.
- the 2nd core cylinder 25 is set to the jig
- the jig 90 includes, for example, first to fourth jigs 70, 71, 73, and 74.
- the first jig 70 is formed by dividing a flat plate having a circular hole 70D that can be fitted to the outside of the fitting portion 26 of the second core cylinder 25, across the circular hole 70D.
- a pair of divided bodies 70A and 70B is divided into two.
- the lower side of the ring protrusion 70T in the circular hole 70D is a diameter-expanded portion 70C whose diameter is increased to accommodate the base portion 22 of the first core cylindrical body 20.
- the second jig 71 includes a columnar column 72 that fits inside the fitting portion 26 of the second core cylinder 25.
- the third jig 73 has a flat plate having a rectangular through hole 73 ⁇ / b> C that can be fitted to the outside of the gate portion 23, and a pair of divided bodies 73 ⁇ / b> A, 73B is divided into two parts.
- the fourth jig 74 includes a pair of clamping tools 74X and 74X.
- Each clamping tool 74X crosses the through hole 74C with a flat plate having a through hole 74C that can be fitted to the outside of one end of the compression coil spring 35.
- the split surface is divided into a pair of split bodies 74A and 74B.
- a pair of clamping tools 74X and 74X are piled up and down, and it has the structure where the edge part of the side from which the through-holes 74C and 74C of both clamping tools 74X and 74X were spaced apart reduced in step shape. Further, the upper and lower holding tools 74X and 74X are brought into contact with and separated from each other, whereby the fourth jig 74 can hold the compression coil spring 35 in a compressed and deformed state.
- each part of the valve core 40 is performed as follows. That is, for example, as shown in FIG. 5A, the fitting portion 26 of the second core cylinder 25 is fitted to the column 72 of the second jig 71, and the tip end surface 72A of the column 72 is made to be a step surface 26B. Make contact. Next, the divided bodies 70A and 70B of the first jig 70 are combined from both sides of the second core cylinder 25 so that the fitting portion 26 is fitted in the circular hole 70D. Then, as shown in FIG. 5B, rubber as a sealing material 28 is applied to the base portion 27 of the second core cylinder 25 protruding upward from the upper surface of the first jig 70 by, for example, spraying. Spray to coat. In this way, the sealing material 28 is coated on the necessary portion of the second core cylinder 25 without attaching the sealing material 28 to the contact portion of the second core cylinder 25 with the first core cylinder 20. Can do.
- the second jig 71 is retracted so that the second core cylinder 25 is held only by the first jig 70. Further, as shown in FIG. 6, the gate portion 23 of the first core cylinder 20 is fitted into the through hole 73 ⁇ / b> C of the third jig 73 from above, and the first core cylinder 20 is held by the third jig 73. Let me. Then, the third jig 73 is moved closer to the first jig 70 from below, and the fitting part 21 of the first core cylinder 20 is fitted into the fitting part 26 of the second core cylinder 25.
- the shaft portion 31 of the movable member 30 is inserted into the second core cylinder 25 from above. Then, the shaft portion 31 is inserted inside the compression coil spring 35 held in a state of being compressed and deformed by the fourth jig 74, and the lower end portion of the shaft portion 31 is pressed against the die 76 having the concave portion 76 A for forming the spring. The locking part 32 is formed. Thus, the assembly of the valve core 40 is completed. And if the 1st jig
- the conventional caulking engagement portion that engages the first core cylinder 20 and the second core cylinder 25 so as not to be separated is eliminated.
- the joint caulking work is eliminated, and the manufacturing cost can be reduced. That is, in the valve core 40 of the present embodiment, the elastic force of the movable member 30 is not only used as a biasing force for the valve body 33 to close the valve port 29, but also the first core cylinder 20 and the second core. Since the structure is also used as a holding force for preventing separation from the cylinder 25, the pair of fitting portions 21, 26 of the first core cylinder 20 and the second core cylinder 25 interfere with each other.
- the manufacturing cost can be reduced by using a structure that can be separated without being separated, that is, a structure that does not have a conventional caulking engagement portion.
- the valve port seal portion 42 between the valve body 33 and the valve port 29 and the outer peripheral seal portion 41 between the valve core 40 and the inner peripheral surface of the core mounting hole 11 are sealed against the second core cylinder 25. It can be formed at a time by coating the material 28, and the manufacturing cost can be suppressed in this respect as well.
- the valve core 40V of this embodiment is shown in FIGS.
- the fitting portion 21V in the first core cylinder 20V protrudes from the position near the outer edge of the base portion 22, and the fitting portion 21V is formed on the inner surface of the first core cylinder 20V.
- a step surface 21 ⁇ / b> B is formed between the base portion 22 and the base portion 22.
- the fitting part 26V protrudes from the position near the inner edge of the base part 27.
- On the outer surface of the second core cylinder 25V there is a gap between the fitting part 26V and the base part 27.
- a step surface 26B is formed.
- the tip surface 26A of the fitting portion 26V of the second core cylinder 25V abuts on the step surface 21B of the fitting portion 21V of the first core cylinder 20V, and the tip of the fitting portion 21V of the first core cylinder 20V.
- a gap is formed between the surface 21A and the step surface 26B of the fitting portion 26V of the second core cylinder 25V.
- the second core cylinder 25V fitting portion 26V corresponds to the “second fitting portion” of the present invention
- the fitting portion 21V of the first core cylinder 20V is the “second fitting portion” of the present invention. It corresponds to "1 fitting part".
- FIG. 8 shows a jig 90V for coating the sealing material 28 on the second core cylinder 25V.
- the jig 90V includes a first jig 78 and a second jig 79, and the first jig 78 has a size that allows the fitting portion 26V of the second core cylinder 25V to be fitted.
- a through hole 78C is formed.
- the second jig 79 has a support post 79T fitted inside the fitting portion 26V. 8A, the fitting portion 26V of the second core cylinder 25V is fitted into the through hole 78C from above, and the step surface 26B of the fitting portion 26V is formed on the upper surface of the first jig 78.
- the base portion 27 is coated by spraying rubber as the sealing material 28 by spraying.
- the valve core 40X of the present embodiment is shown in FIG. 9, and the second core cylinder 25X is longer than the first core cylinder 20X.
- a seal ring 28X is fitted at a substantially axial center of the outer peripheral surface of the second core cylinder 25X to constitute the outer peripheral seal portion 41 according to the present invention.
- the tip of the second core cylinder 25X has a cylindrical shape.
- a thin dish-like seal support plate 37 is provided near the tip of the shaft portion 31 of the movable member 30X, and the seal member 38 received in the seal support plate 37 is the tip of the second core cylinder 25X. It comes in contact with the surface.
- the same parts as those in the first or second embodiment are denoted by the same reference numerals, and redundant description is omitted.
- Valve stem 11 Core mounting hole 12
- Female screw part 20 20V, 20X 1st core cylinder 21, 21, V, 26, 26V Fitting part 21A, 26A Tip surface 21B, 26B Step surface 22N, 23N
- Male screw part 25, 25V , 25X Second core cylinder 27T Tapered inner surface 28
- Sealing material 29
- Valve port 30 30
- Valve body 35
- Outer seal part 42
- Valve port seal part 11
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Sliding Valves (AREA)
- Lift Valve (AREA)
Abstract
Description
以下、本発明の一実施形態を図1~図6に基づいて説明する。図1において符号10は、バルブステムであって、タイヤ(図示せず)から延びた筒状をなし、その内側がタイヤの内部空間に連通するコア装着孔11になっている。コア装着孔11の開口寄り位置には雌螺子部12が形成され、その奥側には雌螺子部12から離れるに従って徐々に縮径する縮径部13が備えられている。また、バルブステム10の外周面には、図示しないキャップを螺合装着するための雄螺子部14が形成されている。
本実施形態のバルブコア40Vは、図7及び図8に示されている。このバルブコア40Vでは、図7に示すように第1コア筒体20Vにおける嵌合部21Vがベース部22の外縁寄り位置から突出していて、第1コア筒体20Vの内面には、嵌合部21Vとベース部22との間に段差面21Bが形成されている。また、第2コア筒体25Vでは、ベース部27の内縁寄り位置から嵌合部26Vが突出していて、第2コア筒体25Vの外面には、嵌合部26Vとベース部27との間に段差面26Bが形成されている。そして、第2コア筒体25Vの嵌合部26Vの先端面26Aが第1コア筒体20Vの嵌合部21Vの段差面21Bに当接し、第1コア筒体20Vの嵌合部21Vの先端面21Aと第2コア筒体25Vの嵌合部26Vの段差面26Bとの間に隙間が形成されている。なお、本実施形態では、第2コア筒体25V嵌合部26Vが本発明の「第2の嵌合部」に相当し、第1コア筒体20Vの嵌合部21Vが本発明の「第1の嵌合部」に相当する。
本実施形態のバルブコア40Xは、図9に示されており、第2コア筒体25Xが第1コア筒体20Xより長くなっている。また、第2コア筒体25Xの外周面における軸方向の略中央にはシール用リング28Xが嵌合されて、本発明に係る外周シール部41が構成されている。第2コア筒体25Xの先端部は円筒状になっている。これに対し、可動部材30Xのシャフト部31の先端寄り位置に薄皿状のシール支持盤37が備えられ、そのシール支持盤37内に受容されたシール部材38が第2コア筒体25Xの先端面に当接するようになっている。上記以外の構成に関しては、第1又は第2の実施形態と同一部位には、同一符号を付して重複した説明は省略する。
本発明は、前記実施形態に限定されるものではなく、上記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
11 コア装着孔
12 雌螺子部
20,20V,20X 第1コア筒体
21,21V,26,26V 嵌合部
21A,26A 先端面
21B,26B 段差面
22N,23N 雄螺子部
25,25V,25X 第2コア筒体
27T テーパー内面
28 シール材
29 弁口
30,30X 可動部材
31 シャフト部
32 バネ係止部
33 弁体
35 圧縮コイルバネ(弾性部材)
40,40V,40X バルブコア
41 外周シール部
42 弁口シール部
Claims (8)
- コア装着孔の雌螺子部に螺合される雄螺子部を有する第1コア筒体と、
前記第1コア筒体より前記コア装着孔の奥側に配置され、前記第1コア筒体と反対側の開口が弁口になっている第2コア筒体と、
前記第2コア筒体に設けられて、前記コア装着孔の前記雌螺子部より奥側部分に密着する外周シール部と、
前記第1コア筒体及び前記第2コア筒体の内側を直動可能に貫通するシャフト部の先端に前記弁口を開閉する弁体を備えてなる可動部材と、
前記可動部材と前記第1コア筒体とに当接して、前記第1コア筒体と前記弁体とに前記第2コア筒体が挟まれるように付勢する弾性部材と、
前記第1コア筒体と前記第2コア筒体とに設けられて互いに回転可能に嵌合しかつ互いに干渉せずに分離し得る第1の嵌合部と第2の嵌合部とを含む1対の嵌合部と、を有するバルブコア。 - 前記1対の嵌合部は、互いに挿抜自在に嵌合している円筒状をなし、
前記第1の嵌合部には、前記第2の嵌合部の先端面が当接する段差面が備えられている請求項1に記載のバルブコア。 - 前記外周シール部は、前記第2コア筒体にシール材をコーティングしてなる請求項1又は2に記載のバルブコア。
- 前記弁口には、前記弁体側に向かって徐々に拡径し、前記弁体が当接するテーパー内面が備えられ、前記外周シール部を構成する前記シール材が、前記テーパー内面にコーティングされている請求項3に記載のバルブコア。
- 前記第2コア筒体の内周面のうち前記テーパー内面より前記第1コア筒体側を段付き状に拡径して前記第1の嵌合部が形成される共に、その第1の嵌合部の段差面に前記第2の嵌合部の先端面が当接するように構成され、
前記第2コア筒体の内周面には、前記段差面より前記テーパー内面側のみに前記シール材がコーティングされている請求項4に記載のバルブコア。 - 前記第2コア筒体の外周面のうち前記第1コア筒体側を段付き状に縮径して前記第2の嵌合部が形成される共に、前記第1の嵌合部の段差面に前記第2の嵌合部の先端面が当接するように構成され、
前記第2コア筒体の外周面には、前記段差面より第1コア筒体から離れた側のみに前記シール材がコーティングされている請求項4に記載のバルブコア。 - 前記可動部材の直動ストロークより前記1対の嵌合部の嵌合深さが大きい請求項1乃至6の何れか1の請求項に記載のバルブコア。
- 前記シャフト部のうち前記弁体の反対側の端部を拡径してなるバネ係止部を備え、
前記弾性部材は、前記シャフト部に挿通されて一端部が前記バネ係止部に係止し、他端部が前記第1コア筒体のうち前記第2コア筒体と反対側の端部に係止している圧縮コイルバネである請求項1乃至7の何れか1の請求項に記載のバルブコア。
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KR1020187006270A KR102025665B1 (ko) | 2016-01-22 | 2016-03-22 | 밸브 코어 |
US15/761,791 US10428968B2 (en) | 2016-01-22 | 2016-03-22 | Valve core |
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JP7008657B2 (ja) * | 2019-03-11 | 2022-01-25 | 太平洋工業株式会社 | バルブコア |
US20210140549A1 (en) * | 2019-03-25 | 2021-05-13 | Pacific Industrial Co., Ltd. | Valve |
US20210387489A1 (en) * | 2019-09-27 | 2021-12-16 | Pacific Industrial Co., Ltd. | Valve core |
JP7329482B2 (ja) * | 2020-08-11 | 2023-08-18 | 太平洋工業株式会社 | バルブステム及びタイヤバルブ |
CN112944084A (zh) * | 2021-04-15 | 2021-06-11 | 重庆布莱迪仪器仪表有限公司 | 快速接头 |
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CN108027073B (zh) | 2019-10-18 |
JP6636344B2 (ja) | 2020-01-29 |
TWI638107B (zh) | 2018-10-11 |
EP3339697A4 (en) | 2018-12-19 |
CN108027073A (zh) | 2018-05-11 |
US10428968B2 (en) | 2019-10-01 |
JP2017129239A (ja) | 2017-07-27 |
KR102025665B1 (ko) | 2019-09-26 |
US20180274690A1 (en) | 2018-09-27 |
KR20180031041A (ko) | 2018-03-27 |
EP3339697B1 (en) | 2019-09-11 |
EP3339697A1 (en) | 2018-06-27 |
TW201727111A (zh) | 2017-08-01 |
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