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41. 发明专利

JPH06162911A CIRCUIT BREAKER 失效
公开(公告)号：JPH06162911A
公开(公告)日：1994-06-10
申请号：JP31517692
申请日：1992-11-25
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： SAWADA TOMOYUKI , HIRAO AKIHIKO
IPC分类号： H01H73/22
摘要： PURPOSE:To prevent plastic deformation of a bimetal, and secure stable action by composing a spring member in such a way that the bimetal is not energized after trip action by removal of a stop member from a latch movable member. CONSTITUTION:A stop member 9 is stopped in a latch condition by a latch movable member 13 when abnormal current is not supplied. When the abnormal current is supplied, a bimetal 15 is flexed in a counterclockwise direction, the latch movable member 13 rotates counterclockwise against spring force of a spring member 13, and a counter part 9a for the stop member 9 is removed from a stop part of the latch movable member 13 to perform trip action. When the trip action is thus performed, a pressure part 9e of the stop member 9 displaces the latch movable member 13 sufficiently to move its short member to be apart from the bimetal 15, so after the trip action, the stress by the spring member 14 is not applied to the bimetal 15.

42. 发明专利

JPH0676726A CIRCUIT BREAKER 失效
公开(公告)号：JPH0676726A
公开(公告)日：1994-03-18
申请号：JP23121992
申请日：1992-08-31
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： AOYAMA YOICHI , HIRAO AKIHIKO , SAWADA TOMOYUKI , HIROSHIMA TATSUO , MATSUOKA YUKIHIRO
IPC分类号： H01H73/06
摘要： PURPOSE:To prevent the formation of a shunt circuit by providing a holding projection in the cover of a mounting frame side and also providing a receiving hole to be fit for the small part of the holding projection in the cover of the opposite side to the mounting frame side. CONSTITUTION:A positioning hole 24 is formed in a mounting frame 2 and at the same time a rotation hole 42 which is smaller than the hole 24 is formed in the base end of a cradle 5. Also, a holding projection 17 having a small part 19 to be fit for the hole 42 of the cradle 5 at the tip end of a part 18 is provided in the cover 7 of the frame 2 side, and at the same time further a receiving hole 21 to be fit for the part 19 of the projection 17 is provided in the cover 8 of the opposite side to the position of the frame 2. And since the position of the frame 2 and the position of the cradle 5 relative to a body 1 are determined with the projection 17, the mutual position of an operating handle 3, a movable contact element 30 and a bimetal 22 which are positioned with the frame 2 relative to the cradle 5 is stably determined, this circuit breaker may be made an opening and closing mechanism which is small in the dispersion of dimensions.

43. 发明专利

JPH0521291B2 失效
公开(公告)号：JPH0521291B2
公开(公告)日：1993-03-24
申请号：JP21387685
申请日：1985-09-25
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO
IPC分类号： H01H3/38 , H01H3/32 , H01H50/56

44. 发明专利

JPH0547285A CIRCUIT BREAKER 失效
公开(公告)号：JPH0547285A
公开(公告)日：1993-02-26
申请号：JP20793791
申请日：1991-08-20
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO , AOYAMA YOICHI , KOSAKA SHIGEO
IPC分类号： H01H71/08 , H01H73/02
摘要： PURPOSE:To provide a circuit beaker with which insulation between a neutral pole and a voltage pole can be secured easily with a simple structure and assembling and without increasing the size. CONSTITUTION:A case 1, a pair of voltage pole terminals 2, 3 provided at the case 1, a pair of neutral pole terminals 7, 8, a breaker mechanism part 40 contained in the case 1 of which cable way parts are connected with the voltage pole terminals 7, 8, and a neutral pole conductor 60 contained in a recessed part 63 formed in an outer surface of the case 1 and connected with the neutral pole terminals 7, 8 at both ends are provided.

45. 发明专利

JPH02144820A CIRCUIT BREAKER 失效
公开(公告)号：JPH02144820A
公开(公告)日：1990-06-04
申请号：JP29880488
申请日：1988-11-25
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO
IPC分类号： H01H73/18
摘要： PURPOSE:To prevent error operation owing to surge of a stationary switch and protect the stationary switch and a surge absorbing device from overcurrent by installing a surge absorbing device in parallel to a stationary switch and a bypass to make over-electricwave bypassing the stationary switch and the surge absorbing device. CONSTITUTION:When a controlling signal is supplied to a stationary switch 3 connected to a first terminal 1 and a second terminal 2 in series for a load opening and closing, it is turned on or off according to the signal and load is controlled. When surge is applied to the stationary switch 3, it is absorbed in a surge absorbing device 55, a taking-out apparatus 6 is operated by an operation of an abnormal electric current detecting means 5, and contacting parts 4 are trip-opened. At the time, if an arc is generated between points of the contacting parts 4, the arc is jumped to a bypass 35 so as to make the current owing to the arc bypass the stationary switch 3 and the surge absorbing device 55. As a result, error operation by the surge is prevented and the stationary switch and the surge absorbing device are protected from overcurrent.

46. 发明专利

JPH01286225A CIRCUIT BREAKER 失效
公开(公告)号：JPH01286225A
公开(公告)日：1989-11-17
申请号：JP11536488
申请日：1988-05-12
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO
IPC分类号： H01H71/02
摘要： PURPOSE:To simply reinforce a case at a low cost without making it large-sized by filling a reinforcing material in a gap between an insertion hole and a fixing tool in the case constituted of a cover and a body fixed together by the fixing tool inserted into the insertion hole. CONSTITUTION:A case is formed with a body 1 and a cover 2, both of them are connected and fixed by a fixing tool 3. The fixing tool 3 is inserted into a fixing tool insertion hole 4 for use. The strong pressure of the are gas generated by the action of a circuit breaker is applied to the case, if there is a gap 6 between the insertion hole 4 and the fixing tool 3, the body 1 is broken at the portion of the gap 6, and the case is broken. The gap 6 is generated by the draft or the like of a mold when the body is molded. Epoxy resin 7 or the like, for example, with sufficient hardness at the ordinary temperature is injected into the insertion hole 4 and fixed, thereby the gap 6 is filled and reinforced.

47. 发明专利

JPH01286224A CIRCUIT BREAKER 失效
公开(公告)号：JPH01286224A
公开(公告)日：1989-11-17
申请号：JP11536388
申请日：1988-05-12
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO
IPC分类号： H01H71/02
摘要： PURPOSE:To simply reinforce a case with no large cost increase without making it large-sized by burying reinforcing materials made of a material with the strength higher than that of an insulating material forming the case on part of the case. CONSTITUTION:Reinforcing materials 3 and 4 are buried in the side wall 1a of the body of a case and the side wall 2a of a cover. They are buried at the portions where large deformation is generated by the pressure of the arc gas generated by the action of a circuit breaker. Molded articles of a metal plate made of a steel plate and a ceramic material made of silicone nitride are used for the reinforcing material, for example, and they are formed concurrently with the case. The strength of the side wall buried with the reinforcing material has the ratio of about 4.7/13 if the maximum displacement quantities are compared when the reinforcing material having a half length of a beam and the Young's modulus five times that of the material of the beam is buried at the center of the beam assuming that the beam is supported on both ends and a uniform load is applied, for example.

48. 发明专利

JPS6271137A CONTACT SWITCHING DEVICE 失效
公开(公告)号：JPS6271137A
公开(公告)日：1987-04-01
申请号：JP21387485
申请日：1985-09-25
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： SHIROKURA KAORU , HORIUCHI KENICHIRO , HIRAO AKIHIKO
IPC分类号： H01H3/38 , H01H3/32 , H01H50/56

49. 发明专利

JPS61232523A CONTACT SWITCHGEAR 失效
公开(公告)号：JPS61232523A
公开(公告)日：1986-10-16
申请号：JP7326685
申请日：1985-04-05
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： SHIROKURA KAORU , HIRAO AKIHIKO , HORIUCHI KENICHIRO
IPC分类号： H01H50/56 , H01H1/60 , H01H9/30 , H01H9/38 , H01H50/54

50. 发明专利

JPS61220219A CONTACT SWITCHGEAR 失效
公开(公告)号：JPS61220219A
公开(公告)日：1986-09-30
申请号：JP6238085
申请日：1985-03-25
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： AOYAMA YOICHI , HORIUCHI KENICHIRO , HIRAO AKIHIKO , SHIROKURA KAORU
IPC分类号： H01H9/38

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