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1. 发明专利

JP2003243125A EXCLUSIVE ARRESTER FOR WATERPROOF RECEPTACLE 审中-公开
公开(公告)号：JP2003243125A
公开(公告)日：2003-08-29
申请号：JP2002277756
申请日：2002-09-24
申请人： OTOWA ELECTRIC
发明人： MISHIMA KENSHICHIRO , TAKAYAMA TORU , MARUYAMA TAKESHI , OTSUKI KAZUJI
IPC分类号： H01R13/66 , H01H85/44 , H01R13/52 , H01T1/16 , H01T4/04 , H02G3/02 , H02G13/00
摘要： PROBLEM TO BE SOLVED: To provide a structure of facilitating installation work when setting an arrester besides a waterproof receptacle without need of a new installation area. SOLUTION: A waterproof arrester case 13 with an arrester housing part 14 packed inside is fitted to a wall face, on which, the waterproof receptacle 1 is overlapped and fitted. A waterproof packing 11 at the bottom face of the waterproof receptacle is put into a protruding wall 18 formed at an outer periphery of the front opening of the waterproof arrester case 13 to give it a waterproof function. Connection wires 28 to 30 pulled out from the arrester housing part 14 are made twisted wires, and a pin-type terminal 31 fitted at the tip of each wire is put into a screw-less insertion terminal 9 at the bottom face of the waterproof receptacle to facilitate a wiring work. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2003164020A OUTDOOR ENCLOSED TRANSFORMER BOARD 审中-公开
公开(公告)号：JP2003164020A
公开(公告)日：2003-06-06
申请号：JP2001363044
申请日：2001-11-28
申请人： OTOWA ELECTRIC
发明人： MISHIMA KENSHICHIRO , IKEDA TAKESHI , MASAKI TOSHIMITSU
IPC分类号： H02B3/00 , H02B1/28 , H02B1/30
摘要： PROBLEM TO BE SOLVED: To solve the problem that, related to an enclosed transformer board which is suspended by a suspension bracket fitted to a roof board through the roof board and a body case, with the total load being received, a cost rises because strength is raised when it is suspended from the roof board or body case, and waterproof function of a packing is degraded because the case is distorted under the load at suspension. SOLUTION: A roof board 11 is fitted to a fitting bracket 12 provided to the upper part of a transformer 9 by fixing a suspension bracket 13 with the roof board 11 in between, so that no suspension load of the transformer 9 applies on the roof board 11 and the body case 10. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2002352935A LIGHTING RESISTANCE PROTECTIVE DEVICE 失效
公开(公告)号：JP2002352935A
公开(公告)日：2002-12-06
申请号：JP2001160698
申请日：2001-05-29
申请人： OTOWA ELECTRIC
发明人： MISHIMA KENSHICHIRO , MARUYAMA TAKESHI
IPC分类号： H02H9/06 , H01T1/16 , H01T4/08 , H01T4/10
摘要： PROBLEM TO BE SOLVED: To aim at downsizing and improvement of productivity and performance of lightening resistance protective device having a lightning protection element and a discharging gap are connected in series. SOLUTION: A lightning protection element 10, in which electrodes 12, 13 are formed on both faces of a voltage depending non-linear voltage element 11, and a discharging gap 20, is formed integrally in series with the lightning protection element 10 by means of a discharge hole 22, which is connected with an electrode 12 of a lightning protection element 10, while a sheet-formed insulation material 21 is made interposed via an outside electronductive element, for example a draw out terminal 142, and which is partially formed in the sheet-formed insulation material 21 between the drawing out terminal 142 and the electrode 12. If a gas drainage hole is formed in a part facing the discharging gap 20 of the drawing out terminal 142, and if the terminal itself is used for a bimetal which is thermally displaced in the direction enlarging the discharging gap length by the generation of heat in supplying current for lightning current, performance of the lightning resistance protective device is further enhanced.

4. 发明专利

JP2002315169A METHOD FOR LIGHTNING PROTECTION FOR ELECTRIC EQUIPMENT 失效
公开(公告)号：JP2002315169A
公开(公告)日：2002-10-25
申请号：JP2001108701
申请日：2001-04-06
申请人： OTOWA ELECTRIC
发明人： KIMURA SHIGERU , OTSUKI KAZUJI , NAKAI YOSHIKO , KUDO TAKASHI
IPC分类号： H02G13/00
摘要： PROBLEM TO BE SOLVED: To provide a method for lightning protection for electric equipment wherein a Faraday cage in a structure housing the electric equipment is stabilized. SOLUTION: The electric equipment is provided with a lightning protection apparatus. The lightning protection apparatus includes a lightning protection annular ground wire 11 buried around the structure 1 housing the electric equipment 4 so that the structure 1 is encircled with the ground wire, and is so designed that the lightning protection annular ground wire 11 is connected with a lightning conductor 2 at the lightning stroke point on the top of the structure 1 by electric wires 12, such as insulated wires, and lightning current going underground and flowing into the structure 1 is captured by the lightning protection annular ground wire 11 and let to flow to the lightning conductor 2. The earth terminal of the input-side earth lightning arrester of a lightning-resistant transformer 3 placed in the input power line 5 to the electric equipment 4 is connected with a grounding pole 9 outside the lightning protection annular ground wire 11 by an electric wire 8, and lightning current flowing into the input power line 5 is let to flow into the ground outside the lightning protection annular ground wire 11 through the earth lightning arrestor 6 to stabilize a Faraday cage in the structure 1.

5. 发明专利

JP2002270406A LIGHTING ARRESTER AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002270406A
公开(公告)日：2002-09-20
申请号：JP2001070672
申请日：2001-03-13
申请人： OTOWA ELECTRIC
发明人： TAKAYAMA TORU
IPC分类号： H01C7/12
摘要： PROBLEM TO BE SOLVED: To provide a lightning arrester which is less deformed by a force applied in a twisting direction. SOLUTION: This lightning arrester 20 is equipped with terminal electrodes 22 and 23 arranged on the ends of a current limiter 21. FRP rods 26 are inserted into rod inserting holes 22d and 23d bored in the terminal electrodes 22 and 23 and fixed to the terminal electrodes 22 and 23 while the FRP rods 26 are stretched. A force of compressing a space between the terminal electrodes 22 and 23 acts on the arrester 20, so that the lightning arrester 20 is improved in rigidity and less deformed by a force applied in the direction of distortion. By this setup, electrical conductivity between the terminal electrodes 22 and 23 and the current limiter 21 can be kept in a good state.

6. 发明专利

JP2002152961A LIGHTNING-SUPPRESSION DEVICE 失效
公开(公告)号：JP2002152961A
公开(公告)日：2002-05-24
申请号：JP2000344097
申请日：2000-11-10
申请人： KANAZAWA INST OF TECHNOLOGY , OTOWA ELECTRIC
发明人： AEBA MITSUGI , OTSUKI KAZUJI
IPC分类号： H02G13/00
摘要： PROBLEM TO BE SOLVED: To provide a lightning-suppression device, which can reduce the number of lightning striking a lightning rod and can suppress lightning surges which penetrates into electrical equipment. SOLUTION: A rod-shaped insulator 4 is provided at a required distance from a lightning rod 2 placed on the ground 1 or on the roof of a building 3, or a cylindrical insulator 7 is provided so as to surround the lightning rod 2 concentrically. With such a constitution, by changing the distance between the lightning rod 2 and the rod-shaped insulator 4 or the cylindrical insulator 7, the discharge start voltage of the lightning rod 2 at lightning stroke can be changed.

7. 发明专利

JP2002027654A AUTOMATIC CLOSING AND INTERRUPT DEVICE FOR BREAKER, AND BREAKER OPERATING MECHANISM 失效
公开(公告)号：JP2002027654A
公开(公告)日：2002-01-25
申请号：JP2000205543
申请日：2000-07-06
申请人： OTOWA ELECTRIC
发明人： SHIMOJIMA YASUHIRO , AZUMA MASAHIRO , KAMIMURA SUSUMU
IPC分类号： H02H3/12 , G05B9/02 , H01H75/04 , H02H3/06 , H02H3/33
摘要： PROBLEM TO BE SOLVED: (1) To re-close a breaker, only when it performs an interrupt by a lighting surge and prevent power supply to a load apparatus 2 which has failed, (2) to temporarily cause the breaker to perform interruption to restore the load apparatus 2 interrupted by itself by a cause other than the lightning surge, and (3) to enable automatic re-closing of the breaker 4 which is not re-closed unless it is operated manually, when automatic interruption operation takes place. SOLUTION: (1) The breaker 4 is re-closed, on the condition that a lightning surge is detected by a surge detecting circuit 6 when interruption is detected by an interruption detecting sensor 7. (2) Load interruption is detected by a load interruption detecting circuit 39, on condition that a load current becomes lower than a set value, and the breaker 4 is cut off, and re-closed a prescribed time later. (3) An operating body 22, which interposes a breaker lever 18 between, is caused to perform reciprocating movement by a cam device 21, and the breaker lever 18 is moved from the position immediately after interruption up to a normal interruption position, and the breaker is re-closed after that.

8. 发明专利

JP2000306707A ARRESTER 失效
公开(公告)号：JP2000306707A
公开(公告)日：2000-11-02
申请号：JP11627899
申请日：1999-04-23
申请人： OTOWA ELECTRIC
发明人： FUKUI KOJI , MARUYAMA TAKESHI
IPC分类号： H01C7/12 , H01T1/16
摘要： PROBLEM TO BE SOLVED: To ensure bursting structure satisfying expected bursting performance, without applying special works such as the work forming a bursting hole to an insulating pipe. SOLUTION: In this arrester, a current-limiting element having nonlinear voltage-current characteristic is sandwiched between a pair of terminal electrodes, these are arranged on the same axis and inserted in an insulating pipe 11, the terminal electrodes are fixed to both ends of the pipe 11, and an insulating housing body is stuck on the outer peripheral surface of the pipe 11, which has an intermediate layer 16 and a thin inner layer 17 and a thin outer layer 18 stuck on the inner periphery and the outer periphery of the layer 16, respectively. In the layer 16, insulating fibers arranged, in parallel with the axial direction of the current-limiting element are molded in a cylinder type. In the layers 17, 18, insulating fibers are arranged intersecting the fibers of the layer 16.

9. 发明专利

JPH10106714A LIGHTNING BREAKAGE PROTECTION DEVICE FOR INSULATION COATED WIRE 失效
公开(公告)号：JPH10106714A
公开(公告)日：1998-04-24
申请号：JP26099296
申请日：1996-10-01
申请人： OTOWA ELECTRIC
发明人： TAKAYAMA TORU
IPC分类号： H01T4/14 , H01B17/46 , H02G7/00
摘要： PROBLEM TO BE SOLVED: To ensure a flashover between a wire side horn and an element side horn when struck by lightning by a method wherein a simple structure is adopted to reduce the number of parts. SOLUTION: A wire side horn unit 25 includes an element side horn of an insulation cover which embraces an insulation coated wire 3. A conductor blade part 38 is threadedly engaged with fitting holes 34 and 35 formed at a location opposite to the element side horn of the insulation cover. Moreover, the conductor blade part 38 is brought into contact with a conductor by cutting into a coating part of the insulation coated wire 3, and is provided at the leading end of a bolt serving as a wire side horn 36. A bolt head part 40 is exposed on an opening part of the fitting holes 34 and 35. An insulation cover body 41 blocks the opening part of the fitting holes 34 and 35 to cover the bolt head part 40 of the wire side horn 36. This cover body 41 can be opened and closed which is pivoted at the location opposite to the element side horn of the insulation cover. A discharge hole 42 of a small diameter is formed on a thin surface opposite to the element side horn of the cover body 41.

10. 发明专利

JP2535501B2 失效
公开(公告)号：JP2535501B2
公开(公告)日：1996-09-18
申请号：JP4564683
申请日：1983-03-17
申请人： OTOWA ELECTRIC
发明人： KIMURA JUNICHI
IPC分类号： H01C7/12 , H01H37/76 , H01H85/00 , H01H85/045 , H01H85/22 , H01H85/50

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