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1. 发明专利

JP2001052925A DEMAGNETIZING COIL OF DEMAGNETIZING DEVICE FOR BUILDING STRUCTURE 失效
公开(公告)号：JP2001052925A
公开(公告)日：2001-02-23
申请号：JP22476199
申请日：1999-08-09
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： ISHIKAWA NOBORU , ISHIKAWA TOSHIYUKI , KAJIWARA AKIRA , OKADA SETSU
IPC分类号： E04B1/92 , H01F13/00
摘要： PROBLEM TO BE SOLVED: To obtain a demagnetizing coil of a demagnetizer for a building structure that permits an efficient and prompt demagnetizing operation while reducing the cost of the device as a whole, by forming a magnetic field in parallel with the surface of the building structure to remove a residual magnetic field on the building structure. SOLUTION: In a demagnetizing coil 1 of a demagnetizing device for a building structure, a conductor 5 is wound in a flat or swirling form or is connected in parallel with a flat surface such that a magnetic field is formed in parallel with a surface of the building structure, which generates a fault magnetic field. Damped oscillation current passes through the conductor 5. The demagnetizing coil allows a direction of an appearing oscillating magnetic field 11 to conform to an orientational direction of magnetized reinforcing bars 13. Thus, a magnetic flux for demagnetization is more likely to pass therein.

2. 发明专利

JP2001044028A DEMAGNETIZING METHOD FOR BUILDING STRUCTURE AND DEMAGNETIZING DEVICE USED THEREFOR 失效
公开(公告)号：JP2001044028A
公开(公告)日：2001-02-16
申请号：JP21823899
申请日：1999-08-02
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： ISHIKAWA TOSHIYUKI , ISHIKAWA NOBORU , KAJIWARA AKIRA , OKADA SETSU
IPC分类号： E04B1/92 , H01F13/00
摘要： PROBLEM TO BE SOLVED: To provide a demagnetizing method and a demagnetizing device used for it, where the moveming of the device is made easy for removing a residual magnetism occurring at a building structure, while action is done in a short time using a normal power source. SOLUTION: A DC power source 2 with a capacitor is connected in series with a current circuit 3, to a demagnetizing coil 1 arranged on a surface 6 of a building structure where a residual magnetism is generated, which provides delay effect of the damped oscillation current of a resonance circuit specified by the capacity of a capacitor for a DC power source, the resistance of a demagnetizing coil, and inductance to limit a damping factor. The damped oscillation current generates an oscillation magnetic field 5, which acts on residual magnetism 8 of the building structure for demagnetization at the demagnetizing coil, and the demagnetizing coil is arranged according to the position of residual magnetism, for demagnetization in a short time with a normal power source, regardless of the polarity of residual magnetism.

3. 发明专利

JP2000208326A TRUCK FOR DEMAGNETIZING ARCHITECTURE 失效
公开(公告)号：JP2000208326A
公开(公告)日：2000-07-28
申请号：JP870299
申请日：1999-01-18
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： ISHIKAWA TOSHIYUKI , SHIBUYA SHINICHI , ISHIKAWA NOBORU
IPC分类号： E04B1/92 , E04G21/16 , H01F13/00
摘要： PROBLEM TO BE SOLVED: To efficiently demagnetize a magnetized part of a slab, with a simple device. SOLUTION: With a truck 6 provided on a slab 5 for allowed movement and four demagnetizing coils 1-4 placed on the truck 6 provided, the demagnetizing coils 1-4 comprise rectangular parallelopipeds and the size in top view is matched with bararrangement pitches L1 and W1 in the slab, while the demagnetizing coils 1-4 are connected in series so that the generated the magnetic fields have the same orientation.

4. 发明专利

JPH11103188A SHIELDING STRUCTURE AND JOINTING IN TECHNIQUE ELECTROMAGNETIC SHIELDED BUILDING 失效
公开(公告)号：JPH11103188A
公开(公告)日：1999-04-13
申请号：JP26309497
申请日：1997-09-29
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： ISHIKAWA TOSHIYUKI , MORIHIRO ISAO , SAKURAI HITOSHI
IPC分类号： E04B1/92 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To electromagnetically shield a joint in a structural material and a part, keeping it high in vibration resistance without deteriorating it in durability and to enable an electromagnetically shielded building to easily undergo shielding work for renewal. SOLUTION: Surrounding wall, ceiling, and floor of a building are electromagnetically shielded with electromagnetic shielding material to form an electromagnetically shielded space, wherein a joint between connecting parts 1 and 2 of a structural material and structural part is covered with a plate-like electromagnetic shielding material 5, and a spray coating film 6 of metallic powder is made to cover the electromagnetic shielding material 5 spreading over the structural material and structural part. The electromagnetic shielding material 5 is formed of metallic meshes, plates, tapes, foils or conductive nonwoven cloths and fastened to either the structural material or the structural part of the joint with machine screws.

5. 发明专利

JPH1169523A ELECTROMAGNETIC SHIELDING CABINET 失效
公开(公告)号：JPH1169523A
公开(公告)日：1999-03-09
申请号：JP21469197
申请日：1997-08-08
申请人： NIPPON PAINT CO LTD , SHIMIZU CONSTRUCTION CO LTD
发明人： KANDA KAZUNORI , ODA MITSUYUKI , KOMORI HIDEKI , MORIMOTO MASATO , ISHIKAWA TOSHIYUKI , MORIHIRO ISAO , SAKURAI HITOSHI , OYAMA TOSHIO
IPC分类号： H02B1/30
摘要： PROBLEM TO BE SOLVED: To perform electromagnetic wave shielding surely, and to prevent malfunctioning of switchboards and control apparatuses by connecting wall sections, a door section, a window section and a ceiling section electrically with electromagnetic shielding materials, and providing wave absorving materials at parts of the wall sections and the door section. SOLUTION: An electromagnetic shielding cabinet 1 is composed of wall sections 2, a door section 3, a window section 4, a ceiling section 5, an inspecting door 6 provided in a wall on the opposite side to the door section 3. The wall sections 2 and the door section 3 are made out of laminates composed of electromagnetic shielding materials 7 made of metal and wave absorbing materials 8, and insulating sheets 9 as occasion demands. In the touching parts of the door part to the wall parts 2, a conductive gasket 3a is arranged in a door frame 2a, and connects the door section 3 and the wall sections electrically. On the surface of a conductive glass window 4b, a translucent and conductive film 4c is provided. A back-up material 4e is composed of a conductive gasket, and connects the conductive glass window 4b and the wall sections 2 electrically. Consequently, the whole cabinet 1 makes an electromagenetic wave interrupting construction without an electromagnetic gap.

6. 发明专利

JPH1161704A MAGNETIC SHIELDING SYSTEM OF ELEVATED RAILWAY 失效
公开(公告)号：JPH1161704A
公开(公告)日：1999-03-05
申请号：JP22771397
申请日：1997-08-25
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： ISHIKAWA TOSHIYUKI , SHIOKAWA HIDEYO
IPC分类号： E01B26/00
摘要： PROBLEM TO BE SOLVED: To prevent the effect of a magnetic field generated by a current flowed from a stringing to a section under an elevated bridge, a building in the periphery of the section under the elevated bridge, etc., in an elevated railway. SOLUTION: In the magnetic shielding system of the elevated railway having a building, etc., under an elevated bridge or in the periphery of the elevated bridge, a magnetic shielding material is used as the sound-insulating wall of the elevated bridge, the periphery of an elevated pier 8 is covered with a magnetic shielding material 9 while an iron plate 26 is laid on an elevated frame slab 28 and connected electrically to a draw-out track 27 and employed as a grounding conductor. The structural material of the elevated pier 8 is utilized as the magnetic shielding material 9 covering the periphery of the elevated pier 8, and iron or a silicon steel plate laid on a waterproof layer on a roof or the magnetic shielding material such as a PC slab with a deck plate is used as the ceiling section of the building.

7. 发明专利

JPH10322083A HIGH-PERFORMANCE ELECTROMAGNETIC SHIELDING GLASS 失效
公开(公告)号：JPH10322083A
公开(公告)日：1998-12-04
申请号：JP12939497
申请日：1997-05-20
申请人： SHIMIZU CONSTRUCTION CO LTD , MURAKAMI CORP
发明人： ISHIKAWA TOSHIYUKI , SAKURAI HITOSHI , SUEMATSU SHIGEMASA , MORIHIRO ISAO , AKEYOSHI KAZUYUKI , KOBAYASHI AKIYOSHI
IPC分类号： E04B1/92 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To provide a high-performance electromagnetic shielding glass plate, which has a sufficient electromagnetic shielding ability over a wide frequency band and high light transmittance. SOLUTION: A conductive film 4 and a conductive mesh 3 are put between laminated glass plates 1 and 2 in a state where the film 4 and the mesh 3 are put upon another and, at the same time, the film 4 and the mesh 3 are protruded from the end sections of the glass plates 1 and 2 and the extruded sections 8 of the film 4 and the mesh 3 are connected to a window frame. The extruded sections 8 of the film 4 and the mesh 3 are folded to the indoor side by making the indoor side longer than the outdoor side and, at the same time, fixed to the surfaces of the glass plate 1 and 2 with a conductive tape 9. The film 4 is put on the outdoor side and the mesh 3 is put on the indoor side. The film 4 is constituted by sputtering a conductive metallic film on one surface of a film, and the extruded section 8 is folded with the conductive surface on the outside. Intermediate films 5-7 composed of an adhesive are provided between the glass plate 1 and mesh, between the mesh 3 and the film 4, and between the film 4 and the glass plate 2.

8. 发明专利

JPH10196007A CONSTRUCTION METHOD FOR ELECTROMAGNETIC SHIELDING SPACE 失效
公开(公告)号：JPH10196007A
公开(公告)日：1998-07-28
申请号：JP29381097
申请日：1997-10-27
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： TAKAHASHI TAKESHI , NAKAMURA MASATAKE , ISHIKAWA TOSHIYUKI , YABANA KICHIJI
IPC分类号： E04B1/92 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To improve an electromagnetic shielding function at a connected part and efficiently, construct an electromagnetic shielding zone. SOLUTION: Regarding a method for constructing electromagnetic shielding space via the internal division of a building by use of an electromagnetic shielding layer, the metallic deck plate of a floor slab 3 is used as an electromagnetic shielding layer for a ceiling 1, and electromagnetic shielding layers are respectively formed on the upper surfaces of a wall 4 and the floor slab 3, using an electromagnetic shielding material. According to this construction, a zone separated with the metallic deck plate of the ceiling 1 and the electromagnetic shielding layers of the wall 4 and the floor slab 3 is formed as the unit of electromagnetic shielding space, and an electrical connection between the metallic deck plate and the electromagnetic shielding layer of the wall 2 is provided via a mesh.

9. 发明专利

JPH10145067A ELECTROMAGNETICALLY SHIELDED BUILDING 失效
公开(公告)号：JPH10145067A
公开(公告)日：1998-05-29
申请号：JP29646396
申请日：1996-11-08
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： SAKURAI HITOSHI , SHIBUYA SHINICHI , ISHIKAWA TOSHIYUKI , KOBAYASHI KATSUHIRO , OSADA KOJI , MORIHIRO ISAO , SUEMATSU SHIGEMASA , INOUE KATSUHIRO , HANEDA SUSUMU
IPC分类号： E04B1/92 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To prevent electromagnetic shield layers from deteriorating due to vibrations or shocks at piping through-parts of the ceiling, etc., by providing through-parts in a building structure, placing electromagnetic shield boxes in the through-parts and electrically connecting these boxes to the electromagnetic shield layers. SOLUTION: Pipings 11 such as air-conditioning pipings, power/communication cables, etc., are laid in window counters 5 so as to pierce an electromagnetic shield panel 9 and columns 2 having electromagnetic boxes 13 in their through- parts 12. The boxes 13 are electrically connected to the panel 9. Thus the electromagnetic shield material along the length of the each box 13 blocks radio waves from leaking through gaps of through-parts such as ceiling, thus ensuring a high electromagnetic performance.

10. 发明专利

JPH09307272A ELECTROMAGNETICALLY SHIELDED BUILDING 失效
公开(公告)号：JPH09307272A
公开(公告)日：1997-11-28
申请号：JP11726896
申请日：1996-05-13
申请人： SHIMIZU CONSTRUCTION CO LTD , TECHNOLOGY NETWORK INC
发明人： ISHIKAWA TOSHIYUKI , SATO MITSUO
IPC分类号： E04B1/92 , H05K9/00
摘要： PROBLEM TO BE SOLVED: To construct an electromagnetic shield at low cost by a simple process by electrically connecting electromagnetic shield members of partition walls to metal-made regulating members on the top ends of metal meshes protruding from mortal layers at the partition walls buried in a mortar layer on a floor slab. SOLUTION: After peeling an existing tile carpet 10 from the floor, mortar is applied, electromagnetic shield members 11 such as metal meshes are laid, mortar is applied to bury the meshes 11 in the mortar layer 12, the ends of the metal meshes are electrically connected to electromagnetic shield members 7, 9 of partition walls 3 and outer walls 5, the top ends of the meshes 11 buried in the mortar layer 12 are protruded at the partition walls 3, and U-shaped metal-made regulating members 13 are mounted so as to hold the top ends of the meshes 11 and electrically connected to the electromagnetic shield members 7 of the partition walls 3.

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