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61. 发明专利

JP2000164110A CIRCUIT-BREAKER 失效
公开(公告)号：JP2000164110A
公开(公告)日：2000-06-16
申请号：JP33904298
申请日：1998-11-30
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO , INEJI TAKASHI
IPC分类号： H01H9/30 , H01H73/18
摘要： PROBLEM TO BE SOLVED: To provide a circuit-breaker improved in the current limiting performance and capable of shortening the interruption time. SOLUTION: This circuit-breaker is formed of a movable contact 8, a first fixed contact 6, a current limiting contact 14, a pair of normal side contacts B formed of a contact provided in the first fixed contact 6 and a contact provided in the movable contact 8, a pair of current limiting side contacts C formed of a contact provided in the current limiting contact 14 and a contact provided in the movable contact 8, and a pair of interrupting contacts A formed of a contact provided in the movable contact 8 and a contact provided in a second fixed contact 9. This circuit-breaker is also provided with a switch part capable of switching the circuit from the first fixed contact 6 side to the current limiting contact C side or switching reversely with the operation of the movable contact 8 so as to provide a mechanism capable of switching the circuit to the current limiting contact 14 side while opening the pair of normal side contacts B earlier than the pair of interrupting contacts A so as to close the pair of current limiting contacts C.

62. 发明专利

JPH1169528A CIRCUIT BREAKER CONNECTING STRUCTURE 失效
公开(公告)号：JPH1169528A
公开(公告)日：1999-03-09
申请号：JP22458497
申请日：1997-08-21
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： MIZUNO HATSUO , MATSUI YASUSHI , NAKAMICHI YOSHIYA , HIRAO AKIHIKO , SAWADA TOMOYUKI , OIDO TOSHIHIRO , SUMINO YASUHIRO , FUTAHATA YASUSHI
IPC分类号： H02B1/40 , H01H73/06 , H01H73/08 , H01H73/20 , H02B1/32 , H02B1/42
摘要： PROBLEM TO BE SOLVED: To provide a circuit breaker connecting structure which enables a plug-in load to be reduced and facilitates connecting of conductive bars. SOLUTION: This connecting structure is provided with a mounting base 62 on which conductive bars 4 are fixed, a circuit breaker 9 having insertion grooves 5 and mounted on the mounting base 62 and two conductive connecting members 3 having receiving blades 8, arranged inside the insertion grooves 5 in this circuit breaker 9. A guide part 102, which guides the circuit breaker 9 in such a way as to be freely slidable, is provided on the mounting base 62 between the prior-to-mount sloping position of the circuit breaker 9, in such a way that only the uppermost conductive bar 5 comes close to the receiving blades 8 and the mounting position of the circuit breaker 9 with the receiving blades 8 connected to all the conductive bars 4.

63. 发明专利

JPH10106644A WIRE CONNECTING TERMINAL 失效
公开(公告)号：JPH10106644A
公开(公告)日：1998-04-24
申请号：JP25613896
申请日：1996-09-27
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： SUMINO YASUHIRO , HIRAO AKIHIKO , SAWADA TOMOYUKI , OIDO TOSHIHIRO , FUTAHATA YASUSHI
IPC分类号： H01R4/48
摘要： PROBLEM TO BE SOLVED: To surely inform that a wire is connected to a terminal board. SOLUTION: For a wire connecting terminal, a terminal mainbody 1 which has a wire insertion hole 1c and an inner storage 1e communicated therewith, a terminal board 2 stored in the inner storage 1e, a locking spring 3 which has one end provided with a press contact portion 3c to put a wire 10 inserted through the wire insertion hole 1c in press contact with the terminal board 2 and the other end provided with a locking strip 3d to lock the wire 10, a thrusting member 4 which has a thrusting portion 4c to thrust the locking spring 3d and a locked means 5 which has locked portions 5f, 5g locked to locking portions 4d, 4e provided on the thrusting member 4 to hold the locking spring 3 in the thrusted condition and put in contact with the inserted wire 10 to be unlocked from the locking portions 4d, 4e are provided so that the connected condition of the wire 10 can be informed, depending on the locked condition of the thrusting member 4 to the locked means 5. At least one of the locking portions 4d, 4e or the locked portions 5f, 5g are provided in numbers to lock the thrusting member 4 to the locked means 5 in stages.

64. 发明专利

JPH1050194A TRIP GEAR FOR BREAKER 失效
公开(公告)号：JPH1050194A
公开(公告)日：1998-02-20
申请号：JP19996096
申请日：1996-07-30
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： NIBATAKE YASUSHI , HIRAO AKIHIKO , SAWADA TOMOYUKI , OIDO TOSHIHIRO , SUMINO YASUHIRO
IPC分类号： H01H71/24 , H01H73/36 , H01H75/00
摘要： PROBLEM TO BE SOLVED: To provide a trip gear for a breaker, which has sufficient attraction force regardless of the distance of a gap part, and surely cuts off the cable way. SOLUTION: This trip gear for a breaker is provided with its cable way 1, a yoke in a U shape, which is provided with a bottom surface part 3a, side surface parts 3b and 3c extened from both the ends of the bottom surface part, and faced to each other where its cable way is enclosed by the bottom surface part 3a and the side surface parts 3b and 3c, and with a movable iron piece 13 which is attracted in by the yoke magnetized when eddy current flows in the cable way so as to allow the cable way to be cut off. In this case, a attractive part 14 where the smaller distance interspaced from the movable iron piece is more subjected to the smaller area of a gap part through which magnetic fluxes pass.

65. 发明专利

JPH099420A ATTACHMENT STRUCTURE OF ELECTRONIC EQUIPMENT 失效
公开(公告)号：JPH099420A
公开(公告)日：1997-01-10
申请号：JP14868995
申请日：1995-06-15
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： OIDO TOSHIHIRO , HIRAO AKIHIKO , TSUGIHATA YASUSHI
IPC分类号： H02B1/04 , H01H73/08 , H01H73/20 , H01R13/633 , H02B1/40 , H02B1/42
摘要： PURPOSE: To facilitate the removal and improve the retention power by making an edge receiving spring, which is accommodated in a housing, being electrically connected to the body of electric equipment, in roughly a U shape, and making a fan-shaped part at the head, and accommodating it in a housing for shifting by a specified amount in the direction of passage of a plug edge. CONSTITUTION: Electric equipment 11 and an edge receiving spring 17 connected electrically with this are accommodated in a housing 12. The housing 12 is molded in a desired shape of plastic, being provided with a plug edge passage hole 16 at the lower part on one side of the outside. An edge receiving spring storage 12a is provided in the position fronting on the plug edge passage hole 15, and an edge receiving spring 17 is accommodated. The depth of the edge receiving spring storage 12a is made longer by a specified amount than the height of the edge receiving spring 17. The edge receiving spring 17 is made, being bent in roughly a U shape, by both opposite pieces 17b and 17b and a coupling piece 17c out of conductive elastic material, and fan-shaped parts 17d and 17d are made at the head. Hereby, a plug edge 4 linked to the conductive bar 3 is retained firmly by the edge receiving spring 17, and besides it can be easily inserted and removed.

66. 发明专利

JPH06196077A CIRCUIT BREAKER 失效
公开(公告)号：JPH06196077A
公开(公告)日：1994-07-15
申请号：JP34266292
申请日：1992-12-22
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO , AOYAMA YOICHI , SAWADA TOMOYUKI , HIROSHIMA TATSUO , MATSUOKA YUKIHIRO
IPC分类号： H01H71/10 , H01H71/46
摘要： PURPOSE:To improve breaking performance without enlargement in size by providing an inclination on the stopping part of a stopper provided on a case, and setting the opening distance of the stop position in the tripped state of a movable contact larger than in the OFF state. CONSTITUTION:The fixed contact point 4 of a fixed contact 3 and the movable contact point 6 of a movable contact 5 are mutually brought into contact and separated through an opening and closing mechanism part 7. The opening and closing mechanism part 7 comprises a cradle 9 having a handle 8 for turning ON/OFF the contact points 4, 6 and an abnormal current detecting means 12, and operates a part 9a to be locked by the deformation of a bimetal 14 when an abnormal current is carried in the ON state of the contact points 4, 6 to trip the movable contact point 6. In this circuit breaker, an OFF stop part 1t and a trip stop part 1u are continuously provided on a stopper is to which the movable contact 5 is pressed by the spring force of a reversing spring 11 at OFF and trip. Thus, the contact opening distance is increased at the trip time when a large arc is generated so as to improve breaking performance.

67. 发明专利

JPH05159658A ARC EXTINGUISHING DEVICE 失效
公开(公告)号：JPH05159658A
公开(公告)日：1993-06-25
申请号：JP31908191
申请日：1991-12-03
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： TAKAYAMA SHINJI , SAWADA TOMOYUKI , MATSUOKA YUKIHIRO , HIRAO AKIHIKO , AOYAMA YOICHI , HIROSHIMA TATSUO
IPC分类号： H01H9/44 , H01H33/18 , H01H73/18
摘要： PURPOSE:To reduce the number of parts to facilitate assembly, and improve shield performance by providing a loop cable way for generating a magnetic flux interlinking arcs, a pair of small loop parts, and an insulator for shielding the loop cable way. CONSTITUTION:A loop cable way part 3 generates a magnetic flux phi interlinked with arcs Q1, Q2 between arc commutating parts 1, 2 and contacts 4, 5. The part 3 has a pair of reversed U-shaped parts and a connecting part for mtutually connecting both ends of the reversed U-shaped parts, which are integrally formed, and the connecting part is formed in a flat U-shape. Further, an insulator for shielding the part 3 to arcs is provided. The insulator is made of a fiber and has a U-shaped curved form. A slit extending through the arc commutating parts 1, 2 is formed on the bottom part, turned parts are formed on the tops of both end parts, and caulking holes to which caulking projections are engagingly locked are formed on the turned parts. Thus, the number of parts can be minimized to facilitate the assembly and reduce the cost, and shielding performance can be also improved.

68. 发明专利

JPH0433228A BIMETAL DEVICE FOR CIRCUIT BREAKER 失效
公开(公告)号：JPH0433228A
公开(公告)日：1992-02-04
申请号：JP13741290
申请日：1990-05-28
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO
IPC分类号： H01H71/16 , H01H73/22
摘要： PURPOSE:To prevent the temperature of a bimetal from rising to the allowable maximum temperature or above by arranging an elastic radiator brought into contact with the bimetal when the bimetal is displaced by the quantity larger than the preset displacement quantity on the displacement side of the bimetal. CONSTITUTION:The upper end section of the belt-shaped plate of a directly- heated bimetal 1 is fixed to a load side terminal 3, and the load side terminal 3 is provided on a base 4. An elastic radiator 2 is arranged on the displacement side of the bimetal 1, and it is brought into contact with the bimetal 1 when the bimetal 1 is displaced by the quantity larger than the preset displacement quantity. A trip link 5 is operated by the preset displacement quantity of the bimetal 1, and a cradle hooked on the trip link 5 is tripped.

69. 发明专利

JPH02285923A OVERCURRENT PROTECTIVE DEVICE 失效
公开(公告)号：JPH02285923A
公开(公告)日：1990-11-26
申请号：JP10833789
申请日：1989-04-25
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： MATSUDA JUNICHI , HIRAO AKIHIKO , AOYAMA YOICHI
IPC分类号： H02H3/08 , H01H73/00 , H01H77/00 , H02H3/02
摘要： PURPOSE:To sufficiently protect the device against a short circuit by a circuit breaker by simple constitution by operating an electromagnet, operating a changeover switch and bypassing an object to be protected when currents higher than a fixed value are made to flow through the object to be protected. CONSTITUTION:An electromagnet 1 and changeover switches 2 are mounted. The changeover switches 2 have a normally closed contact 17 connected at one end of an object to be protected 11 while having a common contact 18 brought into contact with the normally closed contact 17 on normally, and further has a normally open contact 24 brought into contact by the separating operation of the common contact 18 while being connected to the other end of the object to be protected 11, and the common contact 18 is connected to a terminal 4 as a connecting terminal section to the outside. One end of the electromagnet 1 is connected to either one of a terminal 6 as the node of the normally open contact 24 and the other end of the object to protected 11 or the common contact 18, and the common contact 18 is separation-worked by currents higher than a fixed value.

70. 发明专利

JPH02223125A CIRCUIT BREAKER 失效
公开(公告)号：JPH02223125A
公开(公告)日：1990-09-05
申请号：JP22081489
申请日：1989-08-28
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： HIRAO AKIHIKO , AOYAMA YOICHI
IPC分类号： H01H73/18 , H01H9/30
摘要： PURPOSE:To reduce the number of components and protect a switch element with a simple structure at the time of an abnormality by arranging an electric wiring conductor near a contact section, and allowing the arc end on the contact side to jump to the electric wiring conductor. CONSTITUTION:An electric wiring conductor 35 is provided near a contact section 4 between a switch element 3 and one of the second terminals 2 connected to the switch element 3. The arc end on the fixed contact 8 side of an arc generated on the contact section 4 is allowed to jump to the electric wiring conductor 35 when a switch is tripped open. The electric wiring conductor 35 is connected to the second terminal 2 at one end section, a Z-shaped folded section 35a and an L-shaped folded section 35b are formed at the middle section, the switch element is connected at the other section, and the L-shaped folded section 35b is arranged near the contact section 4. The problem that the contact point is melted by an arc can be dissolved, a branch path used in the conventional example is not required to be provided, the number of components can be reduced, and the structure is simplified.

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