WO2010038253A1 - スプリンクラーヘッド - Google Patents
スプリンクラーヘッド Download PDFInfo
- Publication number
- WO2010038253A1 WO2010038253A1 PCT/JP2008/002722 JP2008002722W WO2010038253A1 WO 2010038253 A1 WO2010038253 A1 WO 2010038253A1 JP 2008002722 W JP2008002722 W JP 2008002722W WO 2010038253 A1 WO2010038253 A1 WO 2010038253A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sprinkler head
- protective cap
- cover plate
- main body
- cylindrical member
- Prior art date
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/12—Releasing means, e.g. electrically released heat-sensitive with fusible links
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/68—Details, e.g. of pipes or valve systems
Definitions
- the sprinkler head is installed on a ceiling surface or a wall surface in a building, has a nozzle that can be connected to a pipe connected to a water supply source at one end, and a heat-sensitive operation unit at the other end.
- the heat-sensitive operating part supports a valve body that closes the nozzle.
- the sprinkler head there is a conshielded sprinkler head that is installed in a state of being embedded in a ceiling surface or a wall surface, and the sprinkler head is covered with a cover plate.
- the conshielded sprinkler head is used as a sprinkler head having excellent design properties.
- the conshielded sprinkler head of Patent Document 1 has a cylindrical member provided outside a so-called frame yoke type sprinkler head in which a horseshoe-shaped frame extends from the nozzle end and a deflector is installed on the nozzle extension.
- An engaging portion with the cover plate is provided at the lower part of the cover plate.
- the sprinkler head shown in FIG. 6 has the same structure as the conshielded sprinkler head of Patent Document 1, and a cylindrical member A is provided outside the frame yoke sprinkler head SH (hereinafter referred to as “sprinkler head SH”).
- a cylindrical retainer B to which a cover plate P is joined by a low melting point alloy is connected to the lower part of the cylindrical member A.
- a spiral groove A1 carved in the lower part of the tubular member A and a projection B1 projecting from the outer peripheral surface of the retainer B are configured to be screwable.
- the sprinkler head SH, the cylindrical member A, and the retainer B are disposed on the back of the ceiling, and only the cover plate P is disposed in the vicinity of the ceiling surface. Since the cover plate P is connected to the retainer B by a low melting point alloy, the cover plate P falls due to heat at the time of fire. The sprinkler head SH is exposed when the cover plate P falls.
- the thermal operation part G of the sprinkler head SH is subsequently activated / destructed, and the sprinkler head SH is sprayed with water to dissipate the fire by opening the valve body inside the sprinkler head SH. Is.
- a cylindrical protective cap C is fitted on the inner peripheral surface of the cylindrical member in order to prevent deformation or breakage due to external impact during transportation or construction.
- the retainer B cannot be attached to the cylindrical member A unless the protective cap C is removed by fitting the protective cap C to the inner peripheral surface of the cylindrical member.
- the sprinkler head SH has an engagement portion K between which the fastening tool is engaged between the frame F and the pipe connection screw portion T.
- the protective cap C is a cylindrical member. After removing from A, the engagement portion K of the sprinkler head SH in the cylinder member A is gripped by a fastening tool, and the screw portion T of the sprinkler head SH is screwed into the screw portion on the piping side.
- the protective cap C is attached to the cylindrical member A again in order to protect the sprinkler head SH from external force during the construction of the ceiling panel.
- the protective cap C is removed and the retainer B on which the cover plate P is installed is attached to the cylindrical member A. Then, the sprinkler head SH in the cylindrical member A is constructed so as to be concealed by the cover plate P.
- the protective cap C is removed twice, and the operator frequently attaches and removes the protective cap C. Further, there is a high possibility that mistakes such as forgetting to attach the protective cap C will occur.
- an object of the present invention is to provide a sprinkler head having a structure that eliminates the trouble of removing and reattaching the protective cap when the sprinkler head is constructed.
- a sprinkler head main body having a nozzle inside and connected to a water supply pipe is installed in a ceiling and concealed by a cover plate.
- the sprinkler head is fitted to the outer peripheral portion of the sprinkler head main body.
- the invention according to claim 2 is characterized in that an engaging portion with a fastening tool for connecting the sprinkler head main body to the water supply pipe is formed inside the cylindrical member. It is.
- the invention according to claim 3 is characterized in that an engaging portion with the tightening tool is formed between a connecting portion between a protective cap mounted on the sprinkler head body and a water supply pipe of the sprinkler head body.
- the invention according to claim 4 is characterized in that, in the sprinkler head main body, the engaging portion with the tightening tool is larger in diameter than the outer diameter of the protective cap and smaller in diameter than the inner diameter of the cylindrical portion.
- the invention according to claim 5 is a structure in which the deflector provided on the extension of the nozzle outlet of the sprinkler head body is normally housed in the sprinkler head body and protrudes outside the sprinkler head body during operation.
- the sprinkler head by engaging the protective cap with the outer peripheral portion of the sprinkler head main body, it is possible to provide the engagement portion with the fastening tool inside the cylindrical member, and remove the protective cap. Therefore, the sprinkler head can be connected to the water supply pipe.
- the engagement portion with the fastening tool for connecting the sprinkler head main body to the water supply pipe is formed inside the cylindrical member, so that the protective cap is attached to the sprinkler head main body.
- the fastening tool can be locked to the engaging portion.
- the sprinkler head main body is provided by providing the engaging portion with the tightening tool between the connecting portion of the protective cap mounted on the sprinkler head main body and the water supply pipe of the sprinkler head main body.
- An engaging portion is provided on the top.
- the engagement portion with the tightening tool is provided at a location having a diameter larger than the outer diameter of the protective cap and smaller than the inner diameter of the cylindrical portion. Even when the cylindrical member is integrally formed, it is possible to provide an engaging portion with the tightening tool.
- the deflector is housed in the sprinkler head main body and protruded to the outside of the sprinkler head main body during operation, so that when the protective cap is fitted into the sprinkler head main body, There is no hindrance.
- the sprinkler head of the present invention has a cylindrical member mounted outside the sprinkler head main body, a retainer is detachably connected to the cylindrical member, and the retainer has a size that covers the sprinkler head. Is provided.
- the cylindrical member is installed between the water supply pipe connecting screw of the sprinkler head main body and the engaging portion of the fastening tool.
- a hole may be provided in the cylindrical member so that a hot air flow at the time of a fire can easily pass through the cylindrical member.
- you may provide a notch in the surrounding surface of a cylinder member according to the shape of a protective cap or the shape of a sprinkler head main body.
- the engaging portion may be provided by forming a protrusion, a groove, a notch, or a hole on the inner surface side of the cylindrical member.
- the connecting means between the retainer and the cylindrical member may be connected by screwing by a screw structure, by providing a claw on one member and locking it on the other member, or by fitting. In any case, the structure is detachable.
- the connecting means between the retainer and the cover plate must be disconnected due to the heat of the fire, and a shape memory element that can be deformed when it is joined by a low melting point alloy or reaches a certain temperature can be used.
- the protective cap is fitted to the outer periphery of the sprinkler head body. In that case, it comprises so that it may not interfere with the engaging part with the said fastening tool. Further, it is preferable that the retainer cannot be connected to the cylindrical member in a state where the protective cap is mounted on the sprinkler head body. Specifically, a long protective cap is formed so that the retainer does not reach the cylindrical member when the cap is attached.
- FIGS. 1 is a sectional view of a sprinkler head according to the present invention
- FIG. 2 is a sectional view when the sprinkler head is attached to a pipe
- FIG. 3 is a bottom view of FIG. 2
- FIG. 1 is a sectional view of a sprinkler head according to the present invention
- FIG. 2 is a sectional view when the sprinkler head is attached to a pipe
- FIG. 3 is a bottom view of FIG. 2
- the sprinkler head of the present invention shown in FIGS. 1 to 3 includes a sprinkler head main body 1, a cylindrical member 2, a retainer 3, and a cover plate 4.
- the sprinkler head main body 1 has a male screw 6 connected to the water supply pipe 5 outside, and a nozzle (not shown) is provided inside the male screw 6.
- the outlet end of the nozzle is closed by a valve, and the valve is supported by a heat sensitive operation part.
- the internal mechanism of the sprinkler head main body 1 is known in Japanese Patent Application Laid-Open No. 7-284545, and is not directly related to the present invention, so a detailed description is omitted.
- a flange 7 is formed at the base of the male screw 6.
- a plurality of vertical grooves 7A are formed at equal intervals on the side surface of the flange portion 7, and are used as engaging portions with a fastening tool.
- a cylindrical frame 8 having a diameter smaller than the outer diameter of the flange portion 7 is provided below the flange portion 7, and a deflector and heat-sensitive operation in which water discharged from the aforementioned valves and nozzles collides with the frame 8. Department is housed.
- the cylinder 9 is incorporated in the heat sensitive operation part, and when the low melting point alloy filled in the cylinder 9 is melted, the heat sensitive operation part is decomposed.
- the heat collector 10 has a function of absorbing heat from the fire and transferring the heat to the low melting point alloy in the cylinder 9.
- the heat collector is preferably made of copper or copper alloy having good thermal conductivity.
- the cylindrical member 2 has a cylindrical shape, and the upper portion is fixedly installed between the collar portion 7 and the male screw 6 of the sprinkler head main body 1.
- the lower part of the cylindrical member 2 is an opening, and the cylinder 9 and the heat collector 10 of the sprinkler head body 1 protrude from the lower end.
- a spiral groove 11 is engraved on the peripheral surface of the cylindrical member 2 as a connecting means with the retainer 3, and is screwed with a protrusion 12 formed on the outer peripheral surface of the retainer 3, so that the height position of the retainer 3 can be adjusted. It is possible.
- the retainer 3 is connected to the cylindrical member 2 as described above.
- the retainer 3 has a cylindrical shape, and a flange portion 13 is formed at the lower end. Further, a plurality of legs 14 extending downward from the flange portion 13 are provided.
- the tip of the leg 14 is bent horizontally, and a connection surface 15 with the cover plate 4 is formed.
- a low melting point alloy 16 is interposed between the connection surface 15 and the cover plate 4, and the cover plate 4 and the connection surface 15 are joined by the low melting point alloy 16.
- the melting point of the low melting point alloy 16 is selected to melt at a lower temperature than the low melting point alloy filled in the cylinder 9. To do.
- the cover plate 4 is a disk-shaped thin plate, and the periphery is bent to the ceiling side.
- the surface of the cover plate 4 opposite to the surface connected to the retainer 3 is decorated with substantially the same color as the ceiling.
- the material of the cover plate 4 copper or copper alloy having good bonding property with the low melting point alloy 16 is suitable. Further, if a spring or other elastic body is installed between the cover plate 4 and the flange 13 of the retainer 3, it is possible to promote the fall of the cover plate 4 due to the melting of the low melting point alloy 16 in the event of a fire.
- FIG. 2 shows a cross-sectional view of the state in which the protective cap 20 is attached.
- the protective cap 20 has a low-cylindrical shape and is fitted to the outer peripheral surface of the frame 8. The upper end of the opening is in contact with the flange 7.
- the protective cap 20 protects the heat-sensitive operation part and heat collector of the sprinkler head from external impacts.
- FIG. 3 shows a state where the sprinkler head of FIG. 2 is viewed from the bottom surface side of the protective cap.
- the vertical groove 7A of the collar part 7 is provided outside the outer diameter of the protective cap 20, and the fastening tool can be engaged with the vertical groove 7A. Therefore, the sprinkler head can be attached to the pipe with the fastening tool while the protective cap 20 is attached.
- the protrusion 12 of the retainer 3 is formed in such a length that it cannot be screwed into the spiral groove 11 of the cylindrical member 2 in a state where the protective cap 20 is attached to the sprinkler head, the retainer 3 is attached to the cylindrical member 2.
- the retainer 3 cannot be installed on the cylindrical member 2 unless the protective cap 20 is detached, so that forgetting to remove the protective cap 20 can be prevented.
- the cylindrical member 2 is installed outside the sprinkler head main body 1 before being connected to the water supply pipe, and the protective cap 20 is fitted to the sprinkler head main body 1 inside the cylindrical member 2. Is in a state.
- a fastening tool (not shown) is inserted into the cylindrical member 2 from the bottom side of the protective cap, and the fastening tool is engaged with the vertical groove 7A of the sprinkler head body 1 so that the male screw 6 of the sprinkler head body 1 is connected to the end of the water supply pipe 5. Screwed into the formed female screw and connected to the water supply pipe.
- the ceiling board 21 is installed.
- a hole is drilled in the place where the sprinkler head of the ceiling board 21 is installed, and after the ceiling board 21 is installed, the tip of the protective cap 20 attached to the sprinkler head main body 1 is in a state of protruding from the ceiling surface.
- the protective cap is removed from the sprinkler head body 1 and the retainer 3 is installed on the cylindrical member 2. At that time, even if the retainer 3 is to be attached with the protective cap 20 remaining on the sprinkler head body 1, the bottom surface of the protective cap 20 contacts the back surface of the cover plate 4, and the retainer 3 and the tubular member 2 cannot be connected. Forgetting to remove the protective cap 20 can be prevented.
- the protrusion 12 formed on the side surface of the retainer 3 is screwed into the spiral groove 11 of the cylindrical member 2 so that the collar 13 connected to the lower portion of the retainer 3 is adjusted to a position in contact with the ceiling board. This completes the installation of the sprinkler head.
- the sprinkler head main body 1 is connected to a water supply pipe 5 filled with water behind the ceiling, and is arranged so that only the cover plate 4 can be seen from the ceiling surface as described above.
- the low melting point alloy 16 connecting the cover plate 4 and the retainer 3 is melted by the heat of the fire.
- the heat-sensitive operation part supporting the valve closing the nozzle of the sprinkler head main body 1 is disassembled and the valve is separated from the nozzle end to open the nozzle.
- the water filled in the water supply pipe 5 is discharged from the opened nozzle, and the deflector 17 which is on the extension of the nozzle and accommodated in the frame 8 protrudes out of the frame 8 and collides with the deflector 17.
- the fired water is scattered all over the room, preventing the fire from spreading and extinguishing (see FIG. 4).
- Sectional view of the sprinkler head of the present invention Sectional view when the sprinkler head is attached to the pipe Bottom view of FIG. State diagram of sprinkler head activated FIG. 6 shows a state in which a protective cap is attached.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
Description
2 筒部材
3 リテーナー
4 カバープレート
5 給水配管
7 鍔部
8 フレーム
20 保護キャップ
Claims (5)
- 内部にノズルを有しており給水配管と接続されるスプリンクラーヘッド本体が天井内に設置されカバープレートにより隠蔽されており、該カバープレートが天井面下に設けられるよう配置され火災時にはカバープレートをリリース可能なリテーナーが、スプリンクラーヘッド本体に装着された筒部材と着脱可能に接続されるスプリンクラーヘッドにおいて、スプリンクラーヘッドに装着される保護キャップが、前記スプリンクラーヘッド本体の外周部と嵌合されることを特徴とするスプリンクラーヘッド。
- 前記筒部材の内部に、スプリンクラーヘッド本体を給水配管と接続するための締結工具との係合部が形成されていることを特徴とする請求項1記載のスプリンクラーヘッド。
- 前記スプリンクラーヘッド本体に装着された保護キャップとスプリンクラーヘッド本体の給水配管との接続部の間に前記締付工具との係合部が形成されていることを特徴とする請求項1または2記載のスプリンクラーヘッド。
- 前記スプリンクラーヘッド本体において、前記締付工具との係合部は、保護キャップ外径より大径であり、かつ筒部内径より小径であることを特徴とする請求項1または2記載のスプリンクラーヘッド。
- 前記スプリンクラーヘッド本体のノズル出口の延長上に設けられたデフレクターが、常時はスプリンクラーヘッド本体内に収容されており、作動時にスプリンクラーヘッド本体の外部に突出される構造であることを特徴とする請求項1記載のスプリンクラーヘッド。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010531650A JPWO2010038253A1 (ja) | 2008-09-30 | 2008-09-30 | スプリンクラーヘッド |
US13/119,481 US8474545B2 (en) | 2008-09-30 | 2008-09-30 | Sprinkler head |
KR1020117006752A KR20110060906A (ko) | 2008-09-30 | 2008-09-30 | 스프링클러 헤드 |
CN2008801313627A CN102170941A (zh) | 2008-09-30 | 2008-09-30 | 喷洒头 |
PCT/JP2008/002722 WO2010038253A1 (ja) | 2008-09-30 | 2008-09-30 | スプリンクラーヘッド |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2008/002722 WO2010038253A1 (ja) | 2008-09-30 | 2008-09-30 | スプリンクラーヘッド |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010038253A1 true WO2010038253A1 (ja) | 2010-04-08 |
Family
ID=42073049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/002722 WO2010038253A1 (ja) | 2008-09-30 | 2008-09-30 | スプリンクラーヘッド |
Country Status (5)
Country | Link |
---|---|
US (1) | US8474545B2 (ja) |
JP (1) | JPWO2010038253A1 (ja) |
KR (1) | KR20110060906A (ja) |
CN (1) | CN102170941A (ja) |
WO (1) | WO2010038253A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011125921A1 (ja) * | 2010-04-06 | 2011-10-13 | 千住スプリンクラー株式会社 | スプリンクラーヘッド |
JP2013248321A (ja) * | 2012-06-04 | 2013-12-12 | Senju Sprinkler Kk | スプリンクラーヘッド用保護キャップおよび該保護キャップ取外し工具 |
TWI851755B (zh) | 2019-07-16 | 2024-08-11 | 日商千住撒水股份有限公司 | 灑水頭 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5836640B2 (ja) * | 2011-05-18 | 2015-12-24 | 千住スプリンクラー株式会社 | スプリンクラーヘッド着脱用レンチ |
JP5852506B2 (ja) * | 2012-05-21 | 2016-02-03 | 千住スプリンクラー株式会社 | スプリンクラーヘッド用保護キャップおよびスプリンクラーヘッド |
US20150265865A1 (en) | 2014-03-19 | 2015-09-24 | Jeffrey J. Pigeon | Fire sprinkler system |
US20190099630A1 (en) | 2014-03-19 | 2019-04-04 | Firebird Sprinklker Company LLC | Multi-head array fire sprinkler system for storage applications |
US10493308B2 (en) | 2014-03-19 | 2019-12-03 | Firebird Sprinkler Company Llc | Multi-head array fire sprinkler system with heat shields |
KR101599024B1 (ko) | 2014-09-25 | 2016-03-02 | 삼성중공업 주식회사 | 스프링클러 헤드 |
CN106075780B (zh) * | 2016-05-25 | 2019-06-04 | 青岛海川建设集团有限公司 | 装饰吊顶面层zstdy隐蔽式喷头及施工工艺 |
AU2019221478A1 (en) | 2018-02-14 | 2020-08-20 | Victaulic Company | Fire protection system for sloped combustible concealed spaces |
US20200406080A1 (en) * | 2018-03-27 | 2020-12-31 | Senju Sprinkler Co., Ltd. | Sprinkler Head |
CN109876343A (zh) * | 2019-04-08 | 2019-06-14 | 国网河北省电力有限公司经济技术研究院 | 消防喷头的保护装置、消防喷头及灭火系统 |
SG11202112998SA (en) | 2019-06-07 | 2021-12-30 | Victaulic Co Of America | Fire protection system for sloped combustible concealed spaces having hips |
JP1729812S (ja) | 2021-12-20 | 2022-11-15 | スプリンクラーヘッド用保護キャップ |
Citations (4)
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JPH0444957U (ja) * | 1990-08-23 | 1992-04-16 | ||
JP2001157722A (ja) * | 1999-12-03 | 2001-06-12 | Hochiki Corp | スプリンクラーヘッドの保護キャップ |
JP2001161852A (ja) * | 1999-12-10 | 2001-06-19 | Hochiki Corp | スプリンクラーヘッドの保護キャップ |
JP2008086394A (ja) * | 2006-09-29 | 2008-04-17 | Senju Sprinkler Kk | スプリンクラーヘッドカバー |
Family Cites Families (8)
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US4014388A (en) | 1976-06-21 | 1977-03-29 | Central Sprinkler Corporation | Concealed sprinkler assembly |
US4066129A (en) * | 1976-09-17 | 1978-01-03 | Central Sprinkler Corporation | Sprinkler head assembly |
US5072792A (en) * | 1989-04-13 | 1991-12-17 | Star Sprinkler Corporation | Concealed sprinkler head assembly |
US5372203A (en) * | 1993-04-30 | 1994-12-13 | Star Sprinkler Corporation | Concealed sprinkler head |
US6805203B2 (en) * | 2001-03-15 | 2004-10-19 | The Viking Corporation | Cover plate for concealed sprinkler |
US7185567B2 (en) | 2005-03-10 | 2007-03-06 | Victaulic Company | Torque plate tool and method for sprinkler head installation |
US7055614B1 (en) | 2005-03-10 | 2006-06-06 | Victaulic Company | Torque plate for sprinkler head |
US7314094B2 (en) * | 2005-05-17 | 2008-01-01 | Gow Matthew J | Concealed cover for a fire sprinkler head |
-
2008
- 2008-09-30 US US13/119,481 patent/US8474545B2/en not_active Expired - Fee Related
- 2008-09-30 CN CN2008801313627A patent/CN102170941A/zh active Pending
- 2008-09-30 JP JP2010531650A patent/JPWO2010038253A1/ja not_active Withdrawn
- 2008-09-30 KR KR1020117006752A patent/KR20110060906A/ko not_active Application Discontinuation
- 2008-09-30 WO PCT/JP2008/002722 patent/WO2010038253A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0444957U (ja) * | 1990-08-23 | 1992-04-16 | ||
JP2001157722A (ja) * | 1999-12-03 | 2001-06-12 | Hochiki Corp | スプリンクラーヘッドの保護キャップ |
JP2001161852A (ja) * | 1999-12-10 | 2001-06-19 | Hochiki Corp | スプリンクラーヘッドの保護キャップ |
JP2008086394A (ja) * | 2006-09-29 | 2008-04-17 | Senju Sprinkler Kk | スプリンクラーヘッドカバー |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011125921A1 (ja) * | 2010-04-06 | 2011-10-13 | 千住スプリンクラー株式会社 | スプリンクラーヘッド |
US9630039B2 (en) | 2010-04-06 | 2017-04-25 | Senju Sprinkler Co., Ltd. | Sprinkler head |
JP2013248321A (ja) * | 2012-06-04 | 2013-12-12 | Senju Sprinkler Kk | スプリンクラーヘッド用保護キャップおよび該保護キャップ取外し工具 |
TWI851755B (zh) | 2019-07-16 | 2024-08-11 | 日商千住撒水股份有限公司 | 灑水頭 |
TWI859376B (zh) | 2019-12-24 | 2024-10-21 | 日商千住撒水股份有限公司 | 灑水頭 |
Also Published As
Publication number | Publication date |
---|---|
US8474545B2 (en) | 2013-07-02 |
KR20110060906A (ko) | 2011-06-08 |
US20110247836A1 (en) | 2011-10-13 |
JPWO2010038253A1 (ja) | 2012-02-23 |
CN102170941A (zh) | 2011-08-31 |
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