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1. 发明专利

JP2002165419A BRUSH-HOLDING DEVICE 失效
公开(公告)号：JP2002165419A
公开(公告)日：2002-06-07
申请号：JP2000358824
申请日：2000-11-27
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： FUJINO SHINICHI , ITO MASARU , SASAYA KAZUYUKI , HIRUTA MASAHIRO , YOKOYAMA TAKASHI
IPC分类号： H02K13/00
摘要： PROBLEM TO BE SOLVED: To provide a brush-holding device whose operability for assembling is enhanced. SOLUTION: The brush-holding device has a brush holder base 3, a brush holder 4 fitted to the holder base 2, a brush 1 which is inserted into the brush holder 4 and has a pigtail 6 connected to the brush, and a terminal 5 which is fitted to the holder base 2 and is connected to the pigtail 6. A pigtail support 3 is fitted to the holder base 2, and interposes and holds the end part of the pigtail 6 in between. The pigtail 6 and the terminal 5 are connected, between the interposing and holding part of the pigtail supporter for the pigtail and its connection with the brush.

2. 发明专利

JP2001073816A ELECTRONIC CONTROL THROTTLE DEVICE AND MOTOR USED FOR IT 失效
公开(公告)号：JP2001073816A
公开(公告)日：2001-03-21
申请号：JP2000194606
申请日：2000-06-28
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： ITO MASARU , FUJINO SHINICHI , SHIMIZU HISAYA , FUKASAKU YOSHINORI , HIRUTA MASAHIRO , YOKOYAMA TAKASHI
IPC分类号： F02D11/10 , F02D9/02 , H02K7/116 , H02K23/18
摘要： PROBLEM TO BE SOLVED: To suppress fluctuation of engine rotating speed in a low level by setting the slot number of a commutator and arrangement of a brush so as to alternately generate an odd condition and an even condition of the slot number in an electric equivalent circuit, in a connection state between slots including the brush when a motor is rotated. SOLUTION: In an acceleration pedal mechanism 2, an engine control information from a PCM (an engine control unit) 8 and each output signal from a position sensor 11 of an acceleration pedal 10 and a position sensor 7 of a throttle valve 6 are inputted, a prescribed calculation is carried out, current- carrying to a throttle motor 4 is controlled, and an opening of the throttle valve 6 is controlled. The motor 4 is adopted in such a constitution that a slot (a commutator piece) 44 is fixed to a commutator by resin (an insulator 41, two brushes 31, 31' are arranged at 180 deg. on the slot 44. It is thus possible to suppress fluctuation of engine rotating speed in a low level at the time of idling operation.

3. 发明专利

JPH09200996A COMMUTATOR MOTOR 失效
公开(公告)号：JPH09200996A
公开(公告)日：1997-07-31
申请号：JP709696
申请日：1996-01-19
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： ITO MASARU , FUJINO SHINICHI , HIRUTA MASAHIRO , YOKOYAMA TAKASHI
IPC分类号： H02K5/10 , H02K5/15
摘要： PROBLEM TO BE SOLVED: To inhibit the penetration of brush abraded powder into a roller bearing, and to improve the lifetime of the bearing by installing a member smaller than the outside diameter of a commutator and larger than the outside diameter of a rotor shaft between the commutator and the roller bearing. SOLUTION: A shielding member 15 is mounted between a brush holder base 12 and a roller bearing 5. The inside diameter of the shielding member 15 is formed in a size smaller than the outside diameter of the commutator 11 and slightly larger than the outside diamter of a rotor shaft 8, and fixed onto an end bracket 3 or the brush holder base 12 by screwing, etc. According to the constitution, since the flow of air generated in a motor by the revolution of a rotor 7 is stopped to the roller bearing 5 set up near the commutator 11 by the shielding member 15, the quantity of floating in the vicinity of the roller bearing 5 of abraded powder generated by the sliding of brushes 13 and 14 can be reduced, and the penetration of the abraded powder into the bearing is inhibited while the lifetime of the bearing can be lengthened.

4. 发明专利

JP2005207389A Starter for starting internal combustion engine 审中-公开
标题翻译：启动内燃机的起动器
公开(公告)号：JP2005207389A
公开(公告)日：2005-08-04
申请号：JP2004017545
申请日：2004-01-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ABE MITSUTOSHI , YANAGAWA NORIO , HIRUTA MASAHIRO , IWABUCHI TOSHIHIKO
IPC分类号： F02N11/14 , F02N11/00 , F02N11/08 , H02K7/10
摘要： PROBLEM TO BE SOLVED: To provide a starter for starting an internal combustion engine capable of reducing system cost.
SOLUTION: An alternating current motor 2 with commutator is used as a motor part of the starter 1 starting the internal combustion engine. Alternating current electric power is directly supplied to the alternating current motor 2 with commutator from an alternating current power source 10. A magnet switch 6 is connected to the alternating current power source 10 and supplies the alternating current motor with commutator with alternating current. The magnet switch 6 is provided with a through hole 61 communicating between the inside thereof and outside.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种启动能够降低系统成本的内燃机的起动器。解决方案：将具有换向器的交流电动机2用作启动内燃机的起动器1的电动机部分。交流电力由交流电源10直接供给具有整流子的交流电动机2.磁性开关6连接到交流电源10，并向具有交流电的换向器提供交流电动机。磁开关6设置有在其内部和外部之间连通的通孔61。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2005098245A Device and method for detecting error of starter 审中-公开
标题翻译：用于检测起动器故障的装置和方法
公开(公告)号：JP2005098245A
公开(公告)日：2005-04-14
申请号：JP2003334549
申请日：2003-09-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMURA AKITOSHI , HIRUTA MASAHIRO , KANO KOJI , AIZONO TAKEO
IPC分类号： G01C21/00 , F02D45/00 , F02N11/08 , G08G1/0969
摘要： PROBLEM TO BE SOLVED: To detect error (deterioration) of a starter at an early stage by detecting abnormal noise of the starter from engine sound.
SOLUTION: Sound at a vicinity of a power plant at a time of start of the power plant connected to the starter 103 is collected by a microphone 107, collected sound data is filtered in a predetermined frequency band by a processor 201, the maximum value of sound data after filtering is calculated. The maximum value is compared with a threshold value, and if the maximum value is the threshold value or greater, a starter error is determined.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过从发动机声音检测起动器的异常噪声来检测起动器的早期的误差（劣化）。解决方案：通过麦克风107收集与启动器103连接的发电厂启动时发电厂附近的声音，收集的声音数据由处理器201以预定频带进行滤波，计算滤波后的声音数据的最大值。将最大值与阈值进行比较，如果最大值为阈值以上，则确定起动器误差。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JPH02119017A CONTACT STRUCTURE OF MAGNETIC SWITCH FOR STARTER 失效
公开(公告)号：JPH02119017A
公开(公告)日：1990-05-07
申请号：JP27069488
申请日：1988-10-28
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： NAKAZATO SHIGENORI , HIRUTA MASAHIRO , KOMATSU MUTSUO
IPC分类号： F02N11/00 , H01H1/06 , H01H50/54 , H01H51/06
摘要： PURPOSE:To reduce a contact deposition force and miniaturize a magnetic switch by providing an inclined face directly on a movable contact point at the side opposite to the contact surface of a fixed contact point and specifying the surface roughness of the contact surface of the contact point. CONSTITUTION:The surface roughness of a fixed contact 5 is wilfully specified as 10smin. A deposition force decreases because a current density increases if a contact surface is reduced by roughening the surface of a contact point and on the other hand, the area of the contact surface when it is deposited becomes small, and if the surface of the contact point is unnecessarily roughened, a portion to be dissolved increases and an area of deposition increases with the result that a deposition force increases. On the other hand, a restitution coefficient changes depending on a time until a contact point is stabilized, so that if the coefficient is great, a time until the contact point is stabilized is long and an arcing possibility increases, and also a current causes the contact point to close at a transient build-up current; resultantly, the deposition force is increased. It is possible, therefore, to reduce the deposition force if the surface roughness is specified at 10s or more.

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