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1. 发明授权

US4456859A Sewing machine drive motor control system 失效
标题翻译：缝纫机驱动电机控制系统
公开(公告)号：US4456859A
公开(公告)日：1984-06-26
申请号：US325744
申请日：1981-11-30
申请人： Kazuo Watanabe , Hachiro Makabe , Akira Orii , Michio Hisatake , Kazuji Yamamoto
发明人： Kazuo Watanabe , Hachiro Makabe , Akira Orii , Michio Hisatake , Kazuji Yamamoto
IPC分类号： D05B69/22 , H02P5/16
CPC分类号： D05B69/22 , Y10S388/902 , Y10S388/908 , Y10S388/917 , Y10S388/933
摘要： A speed-control circuit for a motor of the sewing machine is disclosed. The circuit includes a controller, thyristors for controlling the rotation of the motor in dependence upon the operation of the controller, operational amplifiers activated in dependence upon the operation of the controller to produce a speed designating voltage, a frequency - voltage converter which receives a frequency representing the speed of rotation of the main shaft of the sewing machine, a comparator for comparing that speed designating voltage with the voltage of the frequency-voltage converter to detect a motor drive phase, and a light emitting diode and a phototransistor activated by the motor drive phase and operative for controlling the ignition phase of those thyristors.
摘要翻译：公开了一种缝纫机用电动机的速度控制电路。电路包括控制器，用于根据控制器的操作来控制电动机的旋转的晶闸管，根据控制器的操作而激活的运算放大器以产生速度指定电压;频率 - 电压转换器，其接收频率代表缝纫机主轴的旋转速度，用于比较该速度指定电压与频率 - 电压转换器的电压以检测电动机驱动相位的比较器，以及由电动机激活的发光二极管和光电晶体管驱动相位并用于控制那些晶闸管的点火相位。

2. 发明授权

US4323833A Sewing machine drive motor control system 失效
标题翻译：缝纫机驱动电机控制系统
公开(公告)号：US4323833A
公开(公告)日：1982-04-06
申请号：US28185
申请日：1979-04-09
申请人： Kazuo Watanabe , Hachiro Makabe , Akira Orii , Michio Hisatake , Kazuji Yamamoto
发明人： Kazuo Watanabe , Hachiro Makabe , Akira Orii , Michio Hisatake , Kazuji Yamamoto
IPC分类号： D05B69/22 , H02P5/16
CPC分类号： D05B69/22
摘要： A braking and speed-control circuit is disclosed which prevents excessive current from being dissipated in a DC series motor. The circuit includes two free-wheeling diodes, a forward-biased diode, and a thyristor. The forward-biased diode is placed between the field coil and the armature winding of the motor. One free-wheeling diode is placed across the entire motor circuit, including the forward-biased diode. The other free-wheeling diode is placed across the forward-biased diode and the field coil. The thyristor can short across the forward-biased diode and the armature winding.
摘要翻译：公开了一种制动和速度控制电路，其防止在DC系列电动机中消耗过多的电流。该电路包括两个续流二极管，正向偏置二极管和晶闸管。正向偏置二极管放置在励磁线圈和电机的电枢绕组之间。一个续流二极管放置在整个电机电路上，包括正向偏置二极管。另一个续流二极管放置在正向偏置二极管和励磁线圈两端。晶闸管可以在正向偏置二极管和电枢绕组之间短路。

3. 发明授权

US4598657A Needle position indicating device for a sewing machine 失效
标题翻译：缝纫机针位置指示装置
公开(公告)号：US4598657A
公开(公告)日：1986-07-08
申请号：US782146
申请日：1985-09-30
申请人： Hachiro Makabe , Akio Koide , Chijyo Tachibana , Kazuji Yamamoto
发明人： Hachiro Makabe , Akio Koide , Chijyo Tachibana , Kazuji Yamamoto
IPC分类号： D05B69/24
CPC分类号： D05B69/24
摘要： When a sewing machine is stopped, it is electrically indicated whether a needle is positioned at a range where the thread passing is available so that intermittent indication during stitching operation is not made. The sewing machine is provided with a device including a neon lamp and a light interrupting member. The sewing machine has on its exposed front surface lighting indicators which are illuminated by the light of the neon lamp if this light is transmitted by the interrupting member which is mounted on or in the vicinity of the movable device for vertical movement of the needle so that the indicators indicate in the inoperative position of the sewing machine that the thread may be passed in a thread passing device.
摘要翻译：当缝纫机停止时，电指示针是否位于可以通过线的范围内，使得不进行缝合操作期间的间歇指示。缝纫机设置有包括氖灯和遮光构件的装置。缝纫机在其暴露的前表面照明指示器上，如果该光由安装在可移动装置上或其附近的中断构件传递，以使针头垂直移动，则由霓虹灯的光照亮，使得指示器表示缝纫机的不工作位置，线可以通过穿线装置。

4. 发明授权

US4524309A Safety control device of commutator motors 失效
标题翻译：换向电机安全控制装置
公开(公告)号：US4524309A
公开(公告)日：1985-06-18
申请号：US332359
申请日：1981-12-18
申请人： Michio Hisatake , Kazuji Yamamoto , Toru Hyodo , Yoshitaka Takahashi
发明人： Michio Hisatake , Kazuji Yamamoto , Toru Hyodo , Yoshitaka Takahashi
IPC分类号： H02P7/295 , H02H7/08 , H02P1/18 , H02P7/292 , H02K17/32
CPC分类号： H02H7/0833 , H02P7/293
摘要： A safety control device for a speed control circuit of a commutator motor having an ignition circuit includes a circuit for detecting an armature current and defining whether the commutator motor is energized with a supply current or with a free wheel current, a maintaining circuit for discriminating if the detected result is a continuously energized condition or an intermittent condition, and a bistable circuit. The maintaining circuit smoothes the detected voltage of the energized motor and maintains the voltage over at least one cycle of the power source and functions temporarily in an equivalent manner of continuous energization of the motor when power source is applied to the motor. The bistable circuit nullifies the ignition circuit of the motor control when the motor is in an intermittent energization and switches the ignition circuit into an effective condition as the maintaining circuit comes to accumulate the voltage above the predetermined level while no speed designation is made to the speed control circuit of the motor.
摘要翻译：具有点火电路的换向器电动机的速度控制电路的安全控制装置包括用于检测电枢电流的电路，并且确定换向器电动机是用供电电流还是用自由电流电流通电;维持电路，用于鉴别是否检测结果是连续通电状态或间歇状态，双稳态电路。维持电路平滑了通电电动机的检测电压，并将电压保持在电源的至少一个周期上，并且当电源施加到电动机时，暂时以等效的方式连续通电电动机。当电动机处于间歇通电状态时，双稳态电路使电动机控制器的点火电路无效，并且当维持电路达到高于预定电平的电压时将点火电路切换到有效状态，而不对速度进行速度指定电机控制电路。

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