公开(公告)号：JP2002152925A

公开(公告)日：2002-05-24

申请号：JP2000341111

申请日：2000-11-08

Applicant: TOSHIBA CORP

Inventor： TAKAGI HIROKAZU ,  AMITA YOSHIAKI ,  TOYODA TAKEO

IPC: H02B13/02 ,  H01H33/42

Abstract: PROBLEM TO BE SOLVED: To provide a driver for an insulator-type switch, which is small-sized and simplified, ensures superior operability for assembling, realizes a stabilized operation mode and superior operability, enables speeding up of contact opening and closing, and displays high reliability of operation. SOLUTION: In an insulator-type switch 1, a support porcelain bushing 15 is fixed to a base 16, and a metal container 14 is arranged at the upper end part of the support bushing 15. To the metal container 14, three porcelain bushings 2, 2a, 2b are fitted, and inside the porcelain bushings 2a, 2b the contacts 12, 13 of disconnectors 1a, 1b are housed. A driver 3 for driving the opening and closing of the contacts 12, 13 of the two disconnectors 1a, 1b inside the insulator-type switch 1, is composed of an operating mechanism portion 32 arranged in an aerial part of the base 16, an insulated operation rod 31 put in the supporting bushing 15, and an opening and closing mechanism portion 30 arranged inside the metal container 14.

公开(公告)号：JPH04192235A

公开(公告)日：1992-07-10

申请号：JP32079090

申请日：1990-11-27

Applicant: TOSHIBA CORP

Inventor： NAKAMOTO TETSUYA ,  AZUMA SEIJI ,  TOYODA TAKEO

IPC: H01H33/70 ,  H01H33/91

Abstract: PURPOSE:To reduce bending stresses incurred in an operating rod and a lever by slidably guiding a pin connecting the lever which connects an arc suppressing chamber to a closing contact section by a support section provided for the stationary section of the arc suppressing chamber. CONSTITUTION:A lever 41 is connected to an insulation operating rod via a pin 42 and a snap ring 43 is fitted on the pin 42 so that the lever does not come off from the pin. This thereby causes both the lever 41 and the operating rod to be driven, and also causes the pin 42 to be moved in the axial direction while being brought into contact with each sliding member 45 whenever a gas breaker is opened/closed, the movable electrode and the like of the arc suppressing chamber are thereby prevented from being moved in the radial direction. In addition, force produced, by the inertia of the movable electrode of a contact section 5 of a closing resistance when cut-off motion is over, is restrained by the pin 42 and each member 45, the deformation of the lever 41 is thereby restrained, this thereby prevent excessive bending stresses from being incurred around the sliding member of the operating rod and around each section close to the operating rod and the lever 41.

公开(公告)号：JP2002281620A

公开(公告)日：2002-09-27

申请号：JP2001083657

申请日：2001-03-22

Applicant: TOSHIBA CORP

Inventor： NISHIZUMI SHIGENORI ,  TOYODA TAKEO ,  KAMIKAWAJI TORU ,  HIOKI ISAO

IPC: H02B13/02 ,  H01H33/02 ,  H01H33/66 ,  H02B13/035 ,  H02B13/055

Abstract: PROBLEM TO BE SOLVED: To downsize the overall constitution by scaling down the space inside the device, and also to suppress use of global warming gas. SOLUTION: A metallic tank 9 being charged with insulating gas is provided with a divider which bifurcates in two directions, and conductors 10 and 5 are arranged within the bushings 11 and 4 connected to the ends of the leaders of this divider. A vacuum valve 1 is applied as a breaking part. This vacuum valve 1 is stored in one hand 11 of the bushings. The conductor 10 connects its one end side to the vacuum valve within the bushing 11, as a branching conductor having a fork branching off within the tank, and also connects its other end side to the conductor 5, within the bushing 4 on the side where the vacuum valve is not stored.

公开(公告)号：JP2002176709A

公开(公告)日：2002-06-21

申请号：JP2000375105

申请日：2000-12-08

Applicant: TOSHIBA CORP ,  TOSHIBA HENDEN KIKI TECHNOLOGY

Inventor： TOYODA TAKEO ,  KOBAYASHI AKIO ,  AMITA YOSHIAKI ,  TAKAGI HIROKAZU

IPC: H02B13/02 ,  H01H33/56

Abstract: PROBLEM TO BE SOLVED: To provide a compound gas insulated switch gear that is capable of securing excellent mechanical strength without increasing the dimensions of a supporting and insulating structure and that lowers cost and improves reliability while maintaining small size and light weight even when the insulating structure that stores the breaking part is positioned at one side of the supporting and insulating structure. SOLUTION: A reinforcing supporting and insulating structure 14 constituted in solid is mounted to a metal container 7 in addition to a supporting and insulating structure 8. The reinforcing supporting and insulating structure 14, which is on a plane that includes the center lines of the breaking part 1 and the supporting and insulating structure 8, is arranged below the breaking part 1.

公开(公告)号：JP2002150899A

公开(公告)日：2002-05-24

申请号：JP2000340950

申请日：2000-11-08

Applicant: TOSHIBA CORP

Inventor： TOYODA TAKEO ,  TAKAGI HIROKAZU

IPC: H01H33/42

Abstract: PROBLEM TO BE SOLVED: To provide a complex type gas-insulating switchgear that is small, lightweight, and low price. SOLUTION: Operation equipment 23a and 24a are connected to an end of an insulating support structure 23, and a metal container 24 containing drive connection parts 27 and 28 driven with the operation equipment is connected to the other end. The insulating structures 25a and 26a, which contains an interception part 29 or a shutter part 30, by which a point of contact of an electricity conducting part is opened/closed by interlocking with at least two or more drive connection parts 27 and 28 in the end of metal container 24. Two or more insulated sticks 25 and 26, which drive the interception part 29 or the shutter part 30 in the insulating support structure 23 are arranged.

公开(公告)号：JPH09204859A

公开(公告)日：1997-08-05

申请号：JP9169596

申请日：1996-01-26

Applicant: TOSHIBA CORP

Inventor： KONO HIROMICHI ,  TOYODA TAKEO

IPC: H01H33/70 ,  H01H33/91

Abstract: PROBLEM TO BE SOLVED: To enhance breaking performance to large current by forming a through hole in the radial direction in a second nozzle or an arc contact support, and exhausting the stay heat between an arc contact and the second nozzle. SOLUTION: When arc contacts 6, 7 are connected with an arc 8, arc- extinguishing gas is supplied from a flow path 24 formed with insulating first and second nozzles 18, 19 to the arc 8. When a breaker is opened, hot gas is accumulated in a space 21. The pressure in the space 21 is raised by the accumulated hot gas. The hot gas is exhausted to the flow path 24 through plural through holes 22 formed in the nozzle 19. The stay of the hot gas in the space 21 is eliminated, breaking performance to large current is enhanced, and the reliability of an electric power facility is enhanced.

公开(公告)号：JPH0855548A

公开(公告)日：1996-02-27

申请号：JP19312894

申请日：1994-08-17

Applicant: TOSHIBA CORP

Inventor： TOYODA TAKEO ,  NAKAMOTO TETSUYA ,  KONO HIROMICHI

IPC: H01H33/70 ,  H01H33/91

Abstract: PURPOSE:To provide a puffer gas-blast circuit breaker which has good breaking performance by reducing an electromagnetic force working on an arc, and improving the efficiency of exhausting hot gas. CONSTITUTION:A pair of a fixed electrode 2 and a movable electrode 3 which freely move into and out of contact with each other are arranged opposite to each other inside a closed container 1 filled with an arc-extinguishing gas. Conductors 5, 6 for taking currents in from the outside are connected respectively to the fixed electrode 2 and to the movable electrode 3. An arc between the opposite electrodes 2, 3 is extinguished by blowing the arc-extinguishing gas. The fixed electrode 2 comprises a cylindrical support member 19, a fixed arc contact 8 provided at the center of the support member 19, and a plurality of ribs 20 arranged radially so that the fixed arc contact 8 is supported to the support member. Of the plurality of ribs 20, those opposite to the conductor 5 for taking current into the gas-blast circuit breaker have electrical resistance the sum of which is smaller than the sum of the electrical resistance of the ribs located on the same side as the conductor 5.

公开(公告)号：JPH07182955A

公开(公告)日：1995-07-21

申请号：JP32355493

申请日：1993-12-22

Applicant: TOSHIBA CORP

Inventor： TANIGUCHI YOSHINOBU ,  NISHIWAKI SUSUMU ,  NISHIZUMI SHIGENORI ,  TOYODA TAKEO

IPC: H01H33/70 ,  H01H33/91

Abstract: PURPOSE:To provide a gas-blast circuit breaker with a resistor capable of contributing to the improvement of safety by more correctly driving a resistor cutoff part with an operating mechanism exerting high reliability with a simple structure. CONSTITUTION:A main cutoff part 2 and a resistor cutoff part 3 are arranged in a container 1. Individually rotatable first and second levers 61, 71 are arranged at the lower part of the container 1 so that their rotary shafts 60, 70 are made coaxial. The main cutoff part 2 is connected to the first lever 61, a main operating mechanism 5 is connected, the resistor cutoff part 3 is connected to the second lever 71, and a resistor side operating mechanism 4 is connected. A delay mechanism 41 is connected to the main operating mechanism 5 and the resistor side operating mechanism 4. A plurality of the first and second couplings 81, 82 are provided on the first and second levers 61, 71 respectively, and they are pressed and coupled with each other. The main cutoff part 2 and the resistor cutoff part 3 can be individually driven correctly.

公开(公告)号：JPH04286822A

公开(公告)日：1992-10-12

申请号：JP5229291

申请日：1991-03-18

Applicant: TOSHIBA CORP

Inventor： TOYODA TAKEO ,  NAKAMOTO TETSUYA ,  TANIGUCHI YOSHINOBU

IPC: H01H33/70 ,  H01H33/91

Abstract: PURPOSE:To provide a buffer gas circuit breaker with a double-motion system closing resistance contact which has high reliability, large capacity and one-point cutoff operation by securely preventing the deformation of a member in breaking while securely holding the function of the closing resistance contact in closing. CONSTITUTION:The second moving electrode 102 with a closing resistance contact is pushed into a cylindrical electrode 105 by the first moving electrode 101 with a closing resistance contact, so that a spring 106 is pushed and shrinked into an energy stored condition. In such a state, the spring 106 releases stored energy on the way of breaking and instantly thrusts the second moving electrode 102 with the closing resistance contact, so that the engagement portion 102a of the electrode 102 collides with the stopper 105a of the electrode 105 at a high speed. The collision energy is absorbed by an elastic sheet 107 on the inside face of the stopper 105. Bending moment momentarily applied to an insulation member 103 via which the second moving electrode 10 in a quenching chamber is connected to the electrode 105 is thus made extremely smaller.

公开(公告)号：JP2002030410A

公开(公告)日：2002-01-31

申请号：JP2000209134

申请日：2000-07-10

Applicant: TOSHIBA CORP

Inventor： ANDO HIDEYASU ,  ITO YOSHIYASU ,  SHINDOU TAKAHIKO ,  TOYODA TAKEO ,  OI MASAYOSHI

IPC: B22D18/02 ,  B22D19/08 ,  C23C4/06 ,  C23C6/00 ,  H01H1/04 ,  H01H11/04 ,  H01H33/70

Abstract: PROBLEM TO BE SOLVED: To provide a coating for electric appliances which is improved in the arc resistance by forming a coating layer on a member constituting an electric appliance, and a manufacturing method thereof. SOLUTION: The coating layer 2 of a metal having the melting point higher than that of a metal base material 1 is formed on the metal base material. A6061 or C1020 is used for the base material 1. For the coating layer 2, 13Cr stainless steel is used. The coating layer 2 is formed by using the thermal spraying method. The angle formed by a free edge and the base material 1 at an end of the coating layer 2, i.e., the groove angle 3 of the coating layer 2 is formed to be 30 deg., and the wall thickness of the coating layer 2 is formed to be 3 mm.