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31. 发明专利

JPS55114199A VOLTAGE REGULATOR 失效
公开(公告)号：JPS55114199A
公开(公告)日：1980-09-03
申请号：JP2081479
申请日：1979-02-26
申请人： HITACHI LTD
发明人： SAITOU AKIHIRO
IPC分类号： H02J7/24 , H02P9/30
摘要： PURPOSE:To cut out an exciting current when an abnormal voltage is generated by melting a fuse inserted in a field-winding circuit by an abnormal voltage sensor when the abnormal voltage is generated. CONSTITUTION:When an abnormal voltage is generated in the output of a generator, a current flows through a route comprising a diode 58, Zener diode 59, and a fuse 60. Owing to the ohmic resistance of the Zener diode 59, the power loss in this element is exponentially increased. As a result, the portion between the anode and cathode is instantly conducted and alloyed and the resistance of the portion becomes extremely low. Therefore, a great current flows through the fuse 60, and the fuse 60 is melted, thereby the flowing of the field current is stopped.

33. 发明专利

JPS5524465A RECTIFIER 失效
公开(公告)号：JPS5524465A
公开(公告)日：1980-02-21
申请号：JP9725278
申请日：1978-08-11
申请人： HITACHI LTD
发明人： SAITOU AKIHIRO , HIRATSUKA TOMOYOSHI , YAMADA SHIGEKI , NAOI KEIGO
IPC分类号： H01L25/07 , H01L23/48 , H01L25/04
摘要： PURPOSE:For raising the vibration resistance of connections, to fit on the lead portion of a rectifier element the terminal made of an elastic material so that compressive force may work. CONSTITUTION:A rectifier element 16 is connected to the recess portion 15 of a cooling fin 1 by solder 3. A lead wire 17 is connected by solder 3 to the opposite side to be connected with said cooling fin 1 of said rectifier element 16. A projecting portion 18 is provided in the vicinity of the tip of said lead wire 17, and said terminal 19 is engaged with, and fastened by solder on, said projecting portion 18. Said terminal 19 employing a highly conductive material having spring characteristic is attached so that the spring force thereof may constantly work in such a direction as to compress said lead wire 17. Consequently, the tensile strength which causes the failure of the connection of said element 16 and said lead wire 17 does not work even through said cooling fin 1 transfers apart from said terminal 19 due to vibration.

35. 发明专利

JPS57135661A ROTOR FOR AC GENERATOR 失效
公开(公告)号：JPS57135661A
公开(公告)日：1982-08-21
申请号：JP1907881
申请日：1981-02-13
申请人： HITACHI LTD
发明人： SAITOU AKIHIRO , AKIYAMA MASAYUKI , YAGINUMA KENJI
IPC分类号： H02K19/22 , H02K15/12
摘要： PURPOSE:To improve the thermal transfer of both a field coil and a field core and to prevent the increase in the temperature of the coil by reducing the thickness of resin interposed between the coil and the core at the fixing time. CONSTITUTION:A linear conductor is wound at a bobbin formed by a cylindrical field core 2 and a pair of disc-shaped insulating plates 3a, 3b while passing heat curable insulating paint solvent, the solvent is cured by energizing and heating after winding, thereby forming a field coil 4. Thus, the interposed insulator between the coil 4 and the core becomes thin, thereby improving the thermal transfer between the coil and the core and reducing the increase in the temperature of the coil 4.

38. 发明专利

JPS5718352A SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPS5718352A
公开(公告)日：1982-01-30
申请号：JP9270180
申请日：1980-07-09
申请人： HITACHI LTD
发明人： NARITA KAZUTOYO , SAKAGAMI TADASHI , KAWASAKI NOBORU , SAITOU AKIHIRO
IPC分类号： H01L25/07 , H01L25/11 , H02M7/04
摘要： PURPOSE:To obtain the full-wave rectifying device, to be mounted on vehicles, with which the damage sustained when mechanical vibration is given to the semiconductor element which will be fixed on one side by a method wherein a unitary- body section is provided at both ends of radiating electrode plates. CONSTITUTION:A DC output is obtained by the vehicle mounting full-wave rectifying device by connecting P type rectifying elements P1, P2 and P3, N type rectifying elements N1, N2 and N3 to three-phase AC input terminals A1, A2 and A3. The P type rectifying elements P1, P2 and P3 are fixed on the radiating electrode plate 1 and they are electrically common-connected. The N type rectifying elements N1, N2 and N3 are also common-connected with the radiating electrode plate and fixed. Both ends A and B of the two radiating electrode plates are formed in one body using bolts and the like. The both ends of the radiating electrode plates fixed with bolts 10a, 10b and 10c are strengthened and the damage arising when mechanical vibrations are generated can be reduced.

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