WO2018047227A1 - 部材継手とそれを用いた噴霧ノズルユニット - Google Patents

部材継手とそれを用いた噴霧ノズルユニット Download PDF

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Publication number
WO2018047227A1
WO2018047227A1 PCT/JP2016/076141 JP2016076141W WO2018047227A1 WO 2018047227 A1 WO2018047227 A1 WO 2018047227A1 JP 2016076141 W JP2016076141 W JP 2016076141W WO 2018047227 A1 WO2018047227 A1 WO 2018047227A1
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WO
WIPO (PCT)
Prior art keywords
union nut
ring
nozzle
lock
cap
Prior art date
Application number
PCT/JP2016/076141
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
良成 今川
Original Assignee
ヤマホ工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ヤマホ工業株式会社 filed Critical ヤマホ工業株式会社
Priority to CN201680001865.7A priority Critical patent/CN108351054B/zh
Priority to PCT/JP2016/076141 priority patent/WO2018047227A1/ja
Priority to KR1020177000697A priority patent/KR102460057B1/ko
Priority to JP2016570120A priority patent/JP6129445B1/ja
Priority to TW105138228A priority patent/TWI710407B/zh
Publication of WO2018047227A1 publication Critical patent/WO2018047227A1/ja
Priority to HK18115999.9A priority patent/HK1256993A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/68—Arrangements for adjusting the position of spray heads
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member

Definitions

  • the present invention relates to a member joint for screwing a union nut or a cap nut so as to prevent loosening with respect to a male screw at a pipe end, more specifically, while being able to stably prevent loosening at the screwing end point. Further, the present invention relates to a member joint that can be easily released from a screw, and a spray nozzle unit for spraying liquid that uses the joint to connect a nozzle to a nozzle holder.
  • the applicant of the present invention has developed and commercialized a joint that connects two members using a union nut and can reliably prevent the union nut from rotating together due to the relative rotation of the two members (Patent Document 1 below). reference).
  • 11 includes a nozzle holder 10A mounted on the boom 51 and a nozzle head 20A connected to the nozzle holder.
  • the nozzle head is a combination of a union nut that is screwed into the nozzle holder and a nozzle that is fastened with the union nut and fixed to the nozzle holder.
  • a lock ring is rotatably attached to the outer periphery of the union nut, and the union nut screwed into the male screw of the nozzle holder of the connection partner is independent of the nozzle holder in the loosening direction of the screw.
  • the lock claw provided on the lock ring is sandwiched between the protrusion provided on the nozzle holder and the clamping piece provided on the union nut.
  • the lock ring is prevented from rotating by the pinch of the protrusion and the clamping piece, and the rotation of the union nut is surely prevented by the lock ring which cannot be rotated.
  • the nozzle of the nozzle head is replaced with one having a nozzle having a different shape, or the direction of the nozzle is switched. In this case, the nozzle head is temporarily loosened. There is a need.
  • Patent Document 1 If it is a liquid spraying device with a low frequency of nozzle replacement and orientation change, the member joints of Patent Document 1 may be used, but as shown in FIG. With respect to the attached liquid spraying device, in particular, a device that frequently changes nozzles and changes the direction of jetting, it is advantageous to be able to release the nozzle head 20A more easily and quickly than tightening.
  • Patent Document 1 has a surface that cannot be said to have a sufficiently simplified structure.
  • the present invention provides a member joint with a simple structure that can be stably prevented from loosening at the union end point of the union nut or cap nut, and at the same time, the union nut or cap nut can be easily loosened, and
  • An object of the present invention is to provide a spray nozzle unit for spraying a liquid in which a nozzle head is connected to a nozzle holder using the member joint.
  • a member joint including a union nut and a connection partner member having a male screw at an end, and screwing the union nut to a male screw of the connection partner member
  • a lock ring that is mounted on the outer periphery of the screwed tip side of the union nut so that it cannot be rotated relative to the axial direction and cannot be moved in the axial direction.
  • An inner flange that protrudes radially inward from the inner diameter of the outer ring, and a cantilevered spring ring that extends from the inner end of the inner flange in the direction away from the union nut.
  • connection mating member has at least one engagement protrusion projecting radially outward from a circle inscribed in each of the lock portions engaged with the lock portion on an outer periphery of the base end side of the male screw.
  • the engaging protrusion includes a first cam surface having a small inclination angle that the lock portion rides when the union nut rotates in a tightening direction, and the lock portion when the union nut rotates in a loosening direction.
  • the second cam surface having a larger inclination angle than the first cam surface with which the abuts.
  • the lock ring is preferably made of a resin such as polyacetal.
  • the union nut and the nozzle holder are preferably formed of a resin such as polyacetal.
  • the member joint preferably has an inclination angle of the second inclined surface of the spring ring larger than an inclination angle of the first inclined surface, and the inclination angle of the first inclined surface is set to be equal to that of the second cam surface. Those which are several degrees smaller than the inclination angle are preferred.
  • the present invention includes a nozzle holder of a connection partner having an internal flow path, and a nozzle head to be combined with the nozzle holder.
  • the nozzle head includes a nozzle having a nozzle hole and a member joint that connects the nozzle to the nozzle holder.
  • the member joint comprising a union nut and a spring ring is used as the member joint, and the nozzle is fastened to the union nut threadedly engaged with the male screw at the tip of the nozzle holder, and the tip of the nozzle holder
  • a spray nozzle unit for spraying a liquid fixed to the container.
  • the spray nozzle unit may incorporate a filter through which the liquid ejected from the nozzle passes inside the nozzle holder.
  • the member joint of the present invention may be one in which the union nut is replaced with a bottomed cylindrical cap having a female thread (a kind of cap nut).
  • the member joint using the bottomed cylindrical cap cannot be used for the application of connecting the nozzle of the spray nozzle unit to the nozzle holder, but can be used for the application of closing the end of the pipe line with the cap. it can.
  • the member joint including the union nut includes, for example, a first pipe joint that fixes the nozzle holder to a boom or the like, a second pipe joint that is connected to the first pipe joint in a liquid-tight and relatively rotatable manner, A member including a union nut for both the connection of the second pipe joint to the first pipe joint and the connection of the nozzle to the third pipe joint with a third pipe joint that is fitted to the second pipe joint so as not to rotate relative to each other. It can also be used when using a joint.
  • a diaphragm valve for opening and closing a pipe incorporated in the middle of a pipe is attached to the first pipe joint of the valve holder using a member joint including a union nut.
  • the lock portion Since the lock portion is brought into contact with the first cam surface of the engagement protrusion having a small inclination angle, the lock portion can get over the engagement protrusion without applying a large tightening force.
  • the tightening is smooth without requiring great force.
  • connection partner member is made of resin
  • union nut and cap are also made of resin.
  • the resultant force of the two forces acts on the contact portion between the second cam surface of the engagement protrusion and the second inclined surface of the spring ring, and the second inclined surface of the lock portion acts on the second cam surface of the engagement protrusion. Pressed.
  • the lock ring rotates with the union nut and cap. Therefore, the union nut or cap can be easily released by simply releasing the union nut or cap in the direction of loosening by applying a force superior to rotational resistance and releasing the engagement of the lock portion with the engagement protrusion. Can do.
  • lock ring is molded individually and integrated into a union nut and cap. The reason for doing so is as follows.
  • the union nut and the cap have a female screw that is screwed into the male screw.
  • the female screw is molded with a mold using a molten resin or the like as a material, it is necessary to rotate and remove the female screw molding portion of the mold when the mold is removed.
  • the lock ring elastically deforms when the lock portion of the spring ring gets over the engagement protrusion, but if the lock ring is independent of the union nut or cap, the union nut or The cap does not elastically deform.
  • the spring ring of the lock ring is allowed to expand due to elastic deformation by providing a gap on the outer periphery, so that the lock portion of the spring ring can get over the engagement protrusion.
  • the inclination angle of the first cam surface of the engagement protrusion is smaller than the inclination angle of the second cam surface, the lock portion of the spring ring is engaged when the union nut or the cap is rotated in the tightening direction.
  • the protrusions can be overcome smoothly and tightening can be performed easily without any trouble.
  • the lock ring formed of resin can be provided with a spring ring that is easily elastically deformed by utilizing the characteristics of the resin.
  • the contact of the lock portion with the first cam surface is close to the line contact, and the union nut or cap The frictional resistance when rotating in the tightening direction is reduced, and the tightening operation can be performed with a smaller force.
  • FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 1. It is sectional drawing which shows the relationship between the lock
  • FIGS. 1 to 10 of the accompanying drawings. 1 to 4 show an example of the spray nozzle unit of the present invention.
  • the illustrated spray nozzle unit 1 is configured by combining a nozzle holder 10 and a nozzle head 20.
  • the nozzle holder 10 is fixed to the outer periphery of a liquid supply pipe 40 such as a boom.
  • the illustrated nozzle holder 10 is a holder that is divided into two and connects two members (the main body 10a and the pressing member 10b) with a screw shaft (not shown) or the like.
  • the liquid inlet 11 a provided in the main body 10 a of the nozzle holder 10 is inserted into a through hole 41 provided in the peripheral wall of the liquid supply pipe 40, so that the internal flow path of the main body becomes the internal flow path of the liquid supply pipe 40. Communicate. Further, the periphery of the liquid inlet 11 a is liquid-tightly sealed with an O-ring 15.
  • the nozzle head 20 is attached to the main body 10 a of the nozzle holder 10.
  • the nozzle head 20 includes a nozzle 21 and a member joint 22 that detachably connects the nozzle 21 to the nozzle holder 10.
  • the nozzle 21 is provided with a resin ring 21a and an injection plate 21b having an injection hole.
  • the member joint 22 is a member joint of the present invention.
  • This member joint 22 includes a union nut 23 to be screwed onto the male screw 14 of the main body 10a, a lock ring 24 that is mounted on the outer periphery of the union nut 23 on the screwed tip side so as not to be relatively rotatable and to be not relatively movable in the axial direction, It comprises an engaging protrusion 25 with which the lock ring 24 is engaged.
  • the lock ring 24 protrudes from the tip of the union nut 23 in the axial direction.
  • the lock ring 24 includes an outer ring 24a, an inner flange 24b (see FIG. 1) provided so as to protrude radially inward in the middle of the outer diameter of the outer ring, and a free end from a radially inner end of the inner flange.
  • annular gap 24d that allows diameter expansion due to elastic deformation of the spring ring 24c.
  • the lock ring 24 has a key groove 23a (see FIG. 2) in which a plurality of keys 24e (see FIG. 3) provided on the inner peripheral surface of the outer ring 24a at a constant pitch in the circumferential direction are provided in the lock ring outer fitting portion of the union nut 23. ) To prevent relative rotation with the union nut 23.
  • a radial bulging portion 24f (see FIG. 3) having a semicircular cross section provided on the inner peripheral surface of the outer ring 24a extends discontinuously in the circumferential direction provided on the lock ring outer fitting portion of the union nut 23. As shown in FIG. 1, it is dropped into the joint groove 23 b (see FIG. 2) to prevent relative movement in the axial direction with the union nut 23.
  • the spring ring 24 c protrudes inward in the radial direction formed by a first inclined surface S ⁇ b> 1 having a reverse inclination and a second inclined surface S ⁇ b> 2 having a larger inclination angle than the first inclined surface S ⁇ b> 1 intersecting an obtuse angle.
  • the mountain-shaped lock portions 24g are provided at a constant pitch in the circumferential direction on the inner peripheral side.
  • the engaging protrusion 25 is provided on the outer periphery of the root portion of the male screw 14.
  • the engaging protrusion 25 has a top portion positioned radially outward from a circle inscribed in each of the lock portions 24g, and the first cam surface on which the lock portion 24g rides when the union nut 23 rotates in the tightening direction. 25a and a second cam surface 25b with which the lock portion 24g abuts when the union nut 23 rotates in the loosening direction.
  • the first cam surface 25a is inclined in the opposite direction to the second cam surface 25b, and the inclination angle ⁇ 1 shown in FIG. 5A of the first cam surface 25a is larger than the inclination angle ⁇ 2 of the second cam surface 25b. small.
  • the inclination angle ⁇ 1 is set to about 20 °
  • the inclination angle ⁇ 2 is set to about 45 °
  • the inclination angle ⁇ 3 of the second inclined surface S2 of the spring ring 24c is set to about 25 °.
  • these inclination angles are not limited to the illustrated angles.
  • the inclination angles ⁇ 1 and ⁇ 2 referred to here are inclination angles of the cam surfaces with respect to a line perpendicular to a straight line connecting the center of the male screw 14 and the top of the engagement protrusion 25, and the inclination angle ⁇ 3 is the spring ring 24c. Is the inclination angle of the second slope S2 with respect to a line perpendicular to a straight line connecting the center of the groove and the groove bottom between the adjacent lock portions 24g.
  • each engagement protrusion 25 is provided at a constant pitch in the circumferential direction. However, if at least one engagement protrusion 25 is provided, the installation purpose is achieved. Further, it is preferable that a plurality of the engagement protrusions 25 are provided at a constant pitch in the circumferential direction, but it is preferable that a force is applied to the lock portion 24g in a balanced manner. .
  • the nozzle holder 10, the union nut 23, and the lock ring 24 of the spray nozzle unit 1 in FIG. 1 are all formed of polyacetal.
  • the material is preferably a high-strength resin rather than a metal, but is not limited to polyacetal.
  • the spring ring 24c Since the inclination angle ⁇ 1 of the first cam surface 25a is small, the spring ring 24c is elastically deformed and expanded in diameter by a component force generated at the contact portion between the first cam surface 25a and the lock portion 24g, whereby the lock portion 24g The engagement protrusion 25 is smoothly overcome.
  • the elastic restoring force of the spring ring 24c is also the second inclined surface S2. It is added to the pressing force against the second cam surface 25b.
  • FIG. 6 shows another example of the spray nozzle unit of the present invention.
  • a nozzle holder 10 provided with a function of switching the direction of the nozzle head 20 is employed.
  • the nozzle holder 10 includes a first pipe joint 11 composed of a two-part member fixed to the outer periphery of a liquid supply pipe 40 such as a boom, a second pipe joint 12 connected to the first pipe joint, and the second pipe joint. And a third pipe joint 13 that is externally fitted and connected.
  • the second pipe joint 12 includes a first piece 12a that is divided into two parts in which the rear side of the O-ring 15 is externally inserted into the tip opening of the first pipe joint 11 and the tip side of the first piece 12a. This is composed of two parts, a second piece (bamboo nipple) 12b, which is liquid-tightly mounted on the outer periphery of the small-diameter cylindrical portion with an O-ring 15 interposed.
  • the illustrated third pipe joint 13 is an L-shaped joint whose front end side is bent by 90 ° with respect to the rear side, and the second piece 12b is press-fitted into a hole on the rear side of the third pipe joint 13 to form the second pipe joint. 12 and the 3rd pipe joint 13 are connected so that relative rotation is impossible.
  • the first pipe joint 11, the second pipe joint 12, and the third pipe joint 13 are all formed of high-strength resin such as polyacetal, and the press-fitting portion of the second piece 12b with respect to the third pipe joint 13 is a seal. Even if no material is installed, it is sealed fluid-tight.
  • the small-diameter cylindrical portion 12c of the first piece 12a of the second pipe joint 12 is inserted into the hole of the third pipe joint 13, and the third pipe joint 13 via a communication hole 12d provided in the middle of the small-diameter cylindrical portion 12c. Is connected to the passage inside the small-diameter cylindrical portion 12c.
  • a total of three communication holes 12d are provided at a predetermined pitch (for example, 45 ° pitch) in the circumferential direction.
  • the nozzle head 20 is connected to the male screw 14 at the tip of the third pipe joint 13 using the member joint 22 described above.
  • Reference numeral 16 in FIG. 6 denotes a filter provided in the third pipe joint 13 as necessary.
  • connection of the second pipe joint 12 to the first pipe joint 11 is also performed using the member joint 22 described above.
  • FIG. 8 shows that the liquid remaining in the liquid supply pipe 40 is prevented from dripping from the nozzle hole of the nozzle head 20 when the spraying of the liquid is stopped.
  • 1 shows an example of a spray nozzle unit 1 incorporating a diaphragm valve 30 for use.
  • the diaphragm valve 30 includes a cap-shaped valve body 31 and a valve body 32 having a rubber valve membrane 32a and a return spring 33 that urges the valve body in a valve closing direction, and is supplied with liquid.
  • the diaphragm valve 30 is opened and the liquid is ejected from the nozzle head 20, and when the liquid supply is stopped and the internal pressure of the liquid supply pipe 40 is reduced, the diaphragm valve 30 is opened. Is closed to prevent the liquid from dripping from the nozzle head 20.
  • the diaphragm valve 30 is attached to the first pipe joint 11A by the member joint 22 described above.
  • a diaphragm valve 30 is additionally provided by using a first pipe joint 11A having a structure different from that of FIG.
  • the other configuration is the same as that of the spray nozzle unit 1 of FIG.
  • FIG. 9 shows a member joint 22 in which a union nut is replaced with a bottomed cylindrical cap (cap nut) 26 having an internal thread 26a.
  • the member joint 22 using the cap 26 can be used for an application in which the end of the pipe line is hermetically closed with a cap.
  • the spray nozzle unit 1 for spraying liquid for example, one having a nozzle holder 10 with a branch pipe as shown in FIG. 10 is commercially available.
  • the nozzle head 20 attached to the main pipe 17 and the branch pipe 18 is removed with the other removed, and the tip opening of the removed pipe is covered with a bottomed cylindrical cap. It may be used by blocking it with.
  • the member joint of the present invention is effective for stable fixing of the cap in such a case.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Catching Or Destruction (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Joints With Pressure Members (AREA)
  • Nozzles (AREA)
PCT/JP2016/076141 2016-09-06 2016-09-06 部材継手とそれを用いた噴霧ノズルユニット WO2018047227A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN201680001865.7A CN108351054B (zh) 2016-09-06 2016-09-06 部件接头和使用该部件接头的喷雾喷嘴单元
PCT/JP2016/076141 WO2018047227A1 (ja) 2016-09-06 2016-09-06 部材継手とそれを用いた噴霧ノズルユニット
KR1020177000697A KR102460057B1 (ko) 2016-09-06 2016-09-06 부재 조인트와 그것을 이용한 분무 노즐 유닛
JP2016570120A JP6129445B1 (ja) 2016-09-06 2016-09-06 部材継手とそれを用いた噴霧ノズルユニット
TW105138228A TWI710407B (zh) 2016-09-06 2016-11-22 構件接頭及使用其之噴霧噴嘴單元
HK18115999.9A HK1256993A1 (zh) 2016-09-06 2018-12-13 部件接頭和使用該部件接頭的噴霧噴嘴單元

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/076141 WO2018047227A1 (ja) 2016-09-06 2016-09-06 部材継手とそれを用いた噴霧ノズルユニット

Publications (1)

Publication Number Publication Date
WO2018047227A1 true WO2018047227A1 (ja) 2018-03-15

Family

ID=58714671

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/076141 WO2018047227A1 (ja) 2016-09-06 2016-09-06 部材継手とそれを用いた噴霧ノズルユニット

Country Status (6)

Country Link
JP (1) JP6129445B1 (ko)
KR (1) KR102460057B1 (ko)
CN (1) CN108351054B (ko)
HK (1) HK1256993A1 (ko)
TW (1) TWI710407B (ko)
WO (1) WO2018047227A1 (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020193705A (ja) * 2019-05-24 2020-12-03 ピーピーアイ ピョンファ カンパニー， リミテッド ワンタッチ結合構造及び緩み防止構造を有する継手管
JP2021079339A (ja) * 2019-11-20 2021-05-27 ヤマホ工業株式会社 ノズル継手アセンブリ
JP2021100749A (ja) * 2019-12-24 2021-07-08 ヤマホ工業株式会社 噴霧ノズルアセンブリ
JP7437043B2 (ja) 2021-07-14 2024-02-22 ヤマホ工業株式会社 噴霧ノズルユニット

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KR102135898B1 (ko) * 2018-08-10 2020-07-21 주식회사유한훌로텍 합성수지관 이음부의 너트 풀림 방지구조
KR102492842B1 (ko) * 2018-08-31 2023-01-27 주식회사 디엔솔루션즈 밀링홀더용 고정편
CN112868627A (zh) * 2021-01-22 2021-06-01 江西华汾粮油实业有限公司 一种大米种植使用的喷药灌溉装置

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JP2020193705A (ja) * 2019-05-24 2020-12-03 ピーピーアイ ピョンファ カンパニー， リミテッド ワンタッチ結合構造及び緩み防止構造を有する継手管
US11873923B2 (en) 2019-05-24 2024-01-16 Ppi Pyungwha Co., Ltd Pipe fitting having anti-loosening structure
JP2021079339A (ja) * 2019-11-20 2021-05-27 ヤマホ工業株式会社 ノズル継手アセンブリ
JP2021100749A (ja) * 2019-12-24 2021-07-08 ヤマホ工業株式会社 噴霧ノズルアセンブリ
JP7060886B2 (ja) 2019-12-24 2022-04-27 ヤマホ工業株式会社 噴霧ノズルアセンブリ
JP7437043B2 (ja) 2021-07-14 2024-02-22 ヤマホ工業株式会社 噴霧ノズルユニット

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KR102460057B1 (ko) 2022-10-27
HK1256993A1 (zh) 2019-10-11
CN108351054B (zh) 2020-10-16
KR20190058223A (ko) 2019-05-29
TW201812186A (zh) 2018-04-01
JP6129445B1 (ja) 2017-05-17
TWI710407B (zh) 2020-11-21
JPWO2018047227A1 (ja) 2018-09-06

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