公开(公告)号：US5051547A

公开(公告)日：1991-09-24

申请号：US454291

申请日：1989-12-22

申请人： Kunio Nagata ,  Masatsugu Yamashita

发明人： Kunio Nagata ,  Masatsugu Yamashita

IPC分类号： H01H3/46 ,  H01H9/06

CPC分类号： H01H3/46 ,  H01H9/063

摘要： A switch mechanism for an electric power tool, comprising: a linear slider received in a switch case so as to be moved manually in a first direction against the biasing force of a return spring; an actuating pin carried by the linear slider so as to be moveable along a second direction perpendicular to the first direction; a pair of direction converting levers crossed in the manner of a pair of scissors by a pivot pin mounted on the switch case, the actuating pin being located adjacent to first ends of the direction converting levers; a pair of lateral sliders engaged by second ends of the direction converting levers and allowed to move in the second direction; a first contact set including contacts carried by the linear slider and the wall surface of the switch case for mutual cooperation as the linear slider is moved in the first direction; and a second contact set including contacts carried by the lateral sliders and the wall surface of the switch case for mutual cooperation as the lateral sliders are moved in the second direction; the actuating pins being moveable between the first ends of the direction converting levers so as to selectively actuate one of the direction converting levers and the associated one of the lateral sliders through movement of the linear slider along the first direction via an engagement between the actuating pin and the first end of the associated one of the direction converting levers.

摘要翻译： 一种用于电动工具的开关机构，包括：容纳在开关壳体中的线性滑块，以克服复位弹簧的偏置力在第一方向上手动地移动; 由所述线性滑块承载的致动销，以便能够沿着垂直于所述第一方向的第二方向移动; 一对方向转换杆以一对剪刀的方式通过安装在开关壳体上的枢轴销交叉，所述致动销位于所述方向转换杆的第一端附近; 一对横向滑动件，其与方向转换杆的第二端接合并允许沿第二方向移动; 第一触点组包括由直线滑块承载的触点和用于相互协作的开关壳体的壁表面，作为线性滑块在第一方向上移动; 以及第二触点组，其包括由所述侧滑块和所述开关壳体的壁表面承载的触点，用于当所述横向滑块沿所述第二方向移动时相互协作; 所述致动销可在所述方向转换杆的所述第一端之间移动，以通过所述线性滑块沿着所述第一方向的移动来选择性地致动所述方向转换杆中的一个和所述相关联的所述侧向滑块中的一个， 以及相关联的一个方向转换杆的第一端。

公开(公告)号：US4564730A

公开(公告)日：1986-01-14

申请号：US641560

申请日：1984-08-16

申请人： Motoyuki Tomizu ,  Kunio Nagata

发明人： Motoyuki Tomizu ,  Kunio Nagata

IPC分类号： H01H1/58 ,  H01H9/02 ,  H01H13/18 ,  H01H15/00 ,  H01H3/16

CPC分类号： H01H1/58 ,  H01H13/18 ,  H01H9/02

摘要： An electrical switch which includes a casing, a pair of fixed contacts each formed by cutting a rod member into a predetermined length, and disposed in the casing to confront each other, a plunger slidably accommodated in the casing for movement in an axial direction, bearing members slidably supporting the plunger, a movable contact formed by cutting a rod member into a predetermined length and mounted to an intermediate portion of the plunger in a direction intersecting with the fixed contacts, and a return spring directed around the outer periphery of the plunger. The movable contact is restored together with the plunger to close the pair of fixed contacts in a free state.

摘要翻译： 一种电气开关，包括壳体，通过将杆构件切割成预定长度而形成的一对固定触点，并且布置在壳体中以彼此面对;可滑动地容纳在壳体中以用于沿轴向移动的柱塞 可滑动地支撑柱塞的构件，通过将杆构件切割成预定长度并且沿与固定触点相交的方向安装到柱塞的中间部分而形成的可动触点，以及围绕柱塞的外周引导的复位弹簧。 活动触点与柱塞一起恢复，以在自由状态下关闭一对固定触点。

公开(公告)号：USD260004S

公开(公告)日：1981-07-28

申请号：US936917

申请日：1978-08-25

申请人： Yasuo Ohhasi ,  Minoru Ishikawa ,  Kunio Nagata ,  Toshiaki Nagao

设计人： Yasuo Ohhasi ,  Minoru Ishikawa ,  Kunio Nagata ,  Toshiaki Nagao

公开(公告)号：US5084598A

公开(公告)日：1992-01-28

申请号：US549557

申请日：1990-07-09

申请人： Kunio Nagata ,  Takezo Sano ,  Saburou Morita ,  Shoji Kazusaka ,  Junzo Asa ,  Satoshi Nozoe

发明人： Kunio Nagata ,  Takezo Sano ,  Saburou Morita ,  Shoji Kazusaka ,  Junzo Asa ,  Satoshi Nozoe

IPC分类号： H01H9/04 ,  H01H9/06 ,  H01H9/52 ,  H01H9/00 ,  H01H15/00

CPC分类号： H01H9/061 ,  B25F5/00 ,  H01H9/04 ,  H01H9/52

摘要： An electric switch for a power tool, comprising: a slider slidably received in a switch casing along a longitudinal direction, a handle provided in the grip of the power tool for manually actuating the slider along the longitudinal direction; a plurality of fixed contact pieces arranged in an internal bottom surface of the switch casing and provided with contact surfaces located substantially in a same plane; and a plurality of moveable contact pieces arranged in the bottom surface of the slider and urged toward the fixed contact pieces by spring members so as to selectively contact at least some of the contact surfaces of the fixed contact pieces. The contact portions of this switch achieve various conductive states by planar arrangement and movement of the contact pieces, the component parts can be fitted into a small switch casing, particularly having a small height. Since the component parts may be assembled one over the other in sequential manner without requiring special efforts, a substantial advantage can be gained in the improvement of the efficiency of the assembling process. And, these advantages can be gained without diminishing the reliability of the various states of contact between the various contact pieces.

摘要翻译： 一种用于电动工具的电开关，包括：沿纵向可滑动地容纳在开关壳体中的滑块，设置在电动工具的把手中的手柄，用于沿纵向方向手动地驱动滑块; 多个固定接触片，其布置在所述开关壳体的内部底表面中并且设置有大致位于同一平面中的接触表面; 以及多个可动接触件，其布置在滑块的底表面中，并通过弹簧构件朝向固定接触片推动，以便选择性地接触固定接触片的至少一些接触表面。 该开关的接触部分通过平面布置和接触片的移动来实现各种导电状态，部件可以装配到小开关外壳中，特别是具有小的高度。 由于组件可以按顺序组合而不需要特别的努力，因此在提高组装过程的效率方面可以获得显着的优点。 并且，可以在不降低各种接触片之间的各种接触状态的可靠性的情况下获得这些优点。

公开(公告)号：US4681994A

公开(公告)日：1987-07-21

申请号：US795767

申请日：1985-11-07

申请人： Kunio Nagata ,  Tatsuo Aoi ,  Norio Iwakiri ,  Hiroshi Osumi ,  Nobuyuki Ogata ,  Norihito Yamane

发明人： Kunio Nagata ,  Tatsuo Aoi ,  Norio Iwakiri ,  Hiroshi Osumi ,  Nobuyuki Ogata ,  Norihito Yamane

IPC分类号： H01H13/18 ,  H01H13/10 ,  H01H13/12

CPC分类号： H01H13/12 ,  H01H13/10

摘要： A high precision and compact contact switch which comprises a housing, a pair of fixed contact elements fixedly supported within the housing, a plunger axially slidably extending into the housing, a generally cylindrical movable contact member, a support piece for the support of the fixed contact elements and a biasing spring. The generally cylindrical movable contact member is tiltably carried by the plunger so as to extend transversely in relation to the plunger. The support piece is preferably made out of synthetic resin. The biasing spring is used for urging the opposite end portions of the movable contact member in order to contact the respective fixed contact elements.

摘要翻译： 一种高精度和紧凑的接触开关，其包括壳体，固定地支撑在壳体内的一对固定接触元件，轴向可滑动地延伸到壳体中的柱塞，大致圆柱形的可动接触构件，用于支撑固定触点的支撑件 元件和偏置弹簧。 大致圆柱形的可动接触构件可由柱塞倾斜地承载，以相对于柱塞横向延伸。 支撑件优选由合成树脂制成。 偏置弹簧用于推动可动接触构件的相对端部，以便接触相应的固定接触元件。

公开(公告)号：US5077824A

公开(公告)日：1991-12-31

申请号：US452748

申请日：1989-12-21

申请人： Kunio Nagata ,  Masatsugu Yamashita ,  Shinya Hamazaki

发明人： Kunio Nagata ,  Masatsugu Yamashita ,  Shinya Hamazaki

IPC分类号： H02P7/29

CPC分类号： H02P7/29 ,  H02P7/2913 ,  Y10S388/937

摘要： A motor control circuit for controlling supply of electric power from a power source to an electric motor, in particular for use in electric power tools, comprising: an output power device for controlling supply of current to the motor according to a duty ratio of a control input signal supplied thereto; current detecting means for detecting an amplitude of an electric current supplied to the electric motor; and feedback means for supplying the control input signal to the output power device, the duty ratio of the input control signal being increased with an increase in the electric current supplied to the electric motor as detected by the current detecting means. Since the torque otuput of the motor is increased when such a need arises, the need for more a complex and expensive continually variable speed control system is eliminated.

公开(公告)号：US4903318A

公开(公告)日：1990-02-20

申请号：US257685

申请日：1988-10-14

申请人： Kunio Nagata

发明人： Kunio Nagata

IPC分类号： H01H9/06 ,  H01H9/52

CPC分类号： H01H9/063 ,  H01H9/52 ,  Y10S388/937

摘要： An electric switch system for a DC motor powered power tool, comprising: a moveable block which is adapted to be manually displaced between a first position and a second position for speed control of the motor; a fixed block arranged adjacent to the first moveable block; a manual selection lever pivotally attached to the fixed block and adapted to be manually rotated from a neutral middle position to either side for the selection of the rotational direction of the motor; a cam structure for permitting the manual rotation of the manual selection lever in either direction away from the middle neutral position only when the moveable block is at the first position and keeping the angularly displaced state of the manual selection lever when the moveable block is displaced away from the first position. Thus, the selection of the rotational direction of the motor and the speed control of the motor can be accomplished as a continuous single operation, and the convenience of the power tool is improved. Further, since the composite control functions can be incorporated into a highly simplified integral unit, the manufacturing cost is reduced and the reliability of the system is improved.

摘要翻译： 一种用于直流电动机动力电动工具的电气开关系统，包括：可移动块，其适于在第一位置和第二位置之间手动位移以用于电动机的速度控制; 与所述第一可移动块相邻布置的固定块; 手动选择杆，其可枢转地附接到固定块并且适于从中间中间位置手动地旋转到任一侧以选择电动机的旋转方向; 凸轮结构，用于仅当可移动块位于第一位置并且当可移动块被移开时保持手动选择杆的角位移状态时，允许手动选择杆在远离中间中间位置的任一方向上手动旋转 从第一个位置。 因此，电动机的旋转方向的选择和电动机的速度控制可以作为连续的单次操作来实现，并且提高了电动工具的便利性。 此外，由于复合控制功能可以并入高度简化的整体单元中，所以制造成本降低，并且提高了系统的可靠性。

公开(公告)号：US4847451A

公开(公告)日：1989-07-11

申请号：US98067

申请日：1987-09-17

申请人： Kunio Nagata

发明人： Kunio Nagata

IPC分类号： H01H9/04 ,  H01H9/06 ,  H01H9/52

CPC分类号： H01H9/063 ,  H01H9/04 ,  H01H9/52

摘要： An electric power tool includes an electric motor. A switch assembly for this power tool includes a device for controlling the on/off operation of the motor, actuated to and fro along a first actuation line, and a device for controlling the forward/reverse operation of the motor, actuated to and fro along a second actuation line. The first and the second actuation line do not intersect one another. This confers good operability upon the switch and upon the power tool as a whole. More particularly, the first actuation line should be skew to the second actuation line, even more particularly substantially skew perpendicular to it; or, alternatively, the first actuation line may be substantially parallel to the second actuation line and somewhat displaced therefrom. The device for controlling the on/off operation of the motor may include a lever extending from the outside of the power switch assembly to the inside thereof, the lever being pivoted about a pivot line so as to actuate the on/off operation of the motor and the lever being formed with an arcuate part cylindrical surface on its outside portion with respect to the pivot line, and the arcuate part cylindrical surface having substantially the same rotational center line as the pivot line; and, more particularly, it may further include a sealing elastic member provided as sealingly cooperating with the arcuate part cylindrical surface of the lever.

摘要翻译： 电动工具包括电动马达。 用于该电动工具的开关组件包括用于控制沿着第一致动线路来回驱动的电动机的开/关操作的装置，以及用于控制电动机的正向/反向操作的装置， 第二驱动线。 第一和第二驱动线不相交。 这在交换机和电动工具整体上具有良好的可操作性。 更具体地，第一致动线应该与第二致动线倾斜，甚至更特别地基本上与其垂直的倾斜; 或者可选地，第一致动线可以基本上平行于第二致动线并且稍微从其移位。 用于控制马达的开/关操作的装置可以包括从电源开关组件的外部延伸到其内部的杠杆，杠杆围绕枢轴线枢转，以便致动马达的开/关操作 并且所述杠杆相对于所述枢转线在其外侧部分上形成有弧形部分圆柱形表面，并且所述弓形部分圆柱形表面具有与所述枢轴线基本相同的旋转中心线; 更具体地说，它还可以包括密封弹性构件，其设置成与杆的弓形部分圆柱形表面密封配合。

公开(公告)号：US4216675A

公开(公告)日：1980-08-12

申请号：US28858

申请日：1979-04-10

申请人： Kunio Nagata ,  Yasuo Ohashi

发明人： Kunio Nagata ,  Yasuo Ohashi

IPC分类号： G05B1/02 ,  G01K7/20 ,  G01K7/18

CPC分类号： G01K7/20

摘要： A temperature detecting device which comprises an electrical bridge circuit including four arms, a temperature responsive resistance contained in one of the arms, a resistance type potential divider having at least one intermediate terminal which represents an output terminal of the network, and switching means connected across two power source terminals thereof for inverting the connection of the potential divider in accordance with a temperature state, positive or negative, which is detected by said device, the respective divided portion divided by the intermediate terminal forming two arms of the network.

摘要翻译： 一种温度检测装置，包括一个包括四个臂的电桥电路，一个臂中包含的温度响应电阻，具有表示网络输出端的至少一个中间端的电阻型分压器， 其两个电源端子用于根据由所述装置检测到的正或负的温度状态来反转所述分压器的连接，所述相应的划分部分由形成所述网络的两个臂的所述中间端子分开。

公开(公告)号：US4977358A

公开(公告)日：1990-12-11

申请号：US513939

申请日：1990-04-24

申请人： Fusao Fushiya ,  Akiharu Hayashi ,  Fumiaki Itsuki ,  Kunio Nagata

发明人： Fusao Fushiya ,  Akiharu Hayashi ,  Fumiaki Itsuki ,  Kunio Nagata

IPC分类号： H02P7/29 ,  H02P7/288

CPC分类号： H02P7/288

摘要： A switching circuit for varying rotational speed of a motor includes a power supply line for connecting the motor to a power source so as to supply driving power to the motor. A parallel connecting circuit of an on-off switch and a short circuiting switch is provided in the power supply line, in such a manner that the driving power is continuously supplied to the motor when the short circuiting switch is on, while in the case that the short circuiting switch is off, the driving power is supplied to the motor during on of the on-off switch but is not supplied during off of the on-off switch. A control member is provided for operation by an operator for varying rotational speed of the motor. The control member is operative for turning on the short circuiting switch at the maximum amount of its operation. The switching circuit further includes an output element for producing an output signal corresponding to the amount of operation of the control member, a continuously conductive switch to be continuously kept on when the control member is operated between the maximum amount of operation and the amount slightly smaller than the maximum amount, and a control element connected to the output element and the continuously conductive switch for controlling the on-off switch.