公开(公告)号：US06702056B2

公开(公告)日：2004-03-09

申请号：US10225121

申请日：2002-08-22

申请人： Koji Tanaka ,  Hiromasa Tanji ,  Tomoji Matsui

发明人： Koji Tanaka ,  Hiromasa Tanji ,  Tomoji Matsui

IPC分类号： B60R2100

CPC分类号： B60R22/44 ,  B60R2022/444 ,  B60R2022/4666

摘要： A seatbelt retractor is capable of winding a seatbelt webbing on a spool driven by a spring and a motor. The seatbelt retractor includes a motor-power transmission device for controlling a motor-power transmission path to turn on and off transmission of motor power to the spool. The motor-power transmission device turns on only when the motor rotates in the belt winding direction to connect the motor-power transmission path and transmit the motor power to the spool. After a specific period of time since a buckle-releasing signal detecting release of a tongue from a buckle is received from a buckle switch, the motor control device rotates the motor in the belt winding direction. When a winding speed of the seatbelt webbing by the spring becomes less than a constant value, the motor-power transmission device is set to turn on so as to connect the motor-power transmission path.

摘要翻译： 安全带卷收器能够将安全带安装在由弹簧和马达驱动的线轴上。 安全带卷收器包括电动机传动装置，用于控制电动机传动路径以接通和断开电动机功率传递到卷轴。 电动机传动装置仅在电动机沿带缠绕方向旋转时接通，以连接电动机传动路径并将电动机功率传递到线轴。 在从扣环开关接收到从扣环释放舌片的扣环释放信号经过一段特定的时间后，电动机控制装置使电动机沿带卷绕方向旋转。 当弹簧的安全带织带的卷绕速度变得小于恒定值时，电动机传动装置被设定为接通以连接电动机传动路径。

公开(公告)号：US5463293A

公开(公告)日：1995-10-31

申请号：US186422

申请日：1994-01-25

申请人： Tomoji Matsui

发明人： Tomoji Matsui

IPC分类号： G11B19/22 ,  H02H7/093 ,  H02P3/06 ,  H02P3/10 ,  H02P3/20 ,  H02P6/24 ,  H02P29/00 ,  H02P6/02

CPC分类号： H02P3/06 ,  G11B19/22 ,  H02P3/10 ,  H02P3/20 ,  H02P6/24

摘要： A motor control device which prevents runaway reverse rotation arising from failure of detection of a rotational speed drop of a motor to a preset value when reverse torque braking is applied. In the first invention, rotation drop detection section 5 detects, from rotational pulses P1 generated by rotational pulse generation section 4, a rotational speed drop to the preset value and outputs rotation drop detection pulse P2. Timer section 6 is activated by rotation stopping signal S1 and outputs pulse P3 upon lapse of the maximum rotation stopping required time of the motor. Control section 1 delivers, upon reception of rotation stopping signal S1 from the outside, a signal to apply reverse torque to motor drive section 2 and then delivers, upon reception of rotation drop detection pulse P2 or pulse P3, an instruction to stop reverse torque. In the second invention, timer section 7 is additionally provided. If the motor enters reverse rotation after a motor rotational speed drop is not detected, control section 1 delivers an instruction to apply forward torque by pulse P3 and timer section 7 is also activated by pulse P3. When a preset time elapses, timer section 7 outputs, to control section 1, pulse P4, in response to which control section 1 delivers an instruction to again apply reverse torque. Control section 1 delivers, when the motor rotational speed becomes lower than a preset value, another instruction to cancel torque application.

摘要翻译： 一种电动机控制装置，其防止当施加反向扭矩制动时由电动机的转速下降检测失败引起的失控反转。 在第一发明中，旋转下降检测部5从由旋转脉冲生成部4生成的旋转脉冲P1检测到转速下降到预设值，并输出旋转下降检测脉冲P2。 定时器部分6由旋转停止信号S1激活，并且经过马达的最大旋转停止所需时间后输出脉冲P3。 控制部1在从外部接收到旋转停止信号S1时，向马达驱动部2施加反向扭矩的信号，并且在接收到旋转下降检测脉冲P2或脉冲P3时传送停止反向转矩的指令。 在第二发明中，另外提供定时器部分7。 如果没有检测到电机转速下降后电机进入反转状态，则控制部分1通过脉冲P3发送施加转矩的指令，定时器部分7也由脉冲P3激活。 当预设时间过去时，定时器部分7向控制部分1输出脉冲P4，响应于哪个控制部分1递送指令以再次施加反向转矩。 当电机转速低于预设值时，控制部分1提供取消转矩施加的另一指令。