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公开(公告)号：US4368784A
公开(公告)日：1983-01-18
申请号：US254386
申请日：1981-04-15
申请人： Steffen Wunsch , Heinz Walz
发明人： Steffen Wunsch , Heinz Walz
IPC分类号： B25B23/147 , B25B21/02
CPC分类号： B25B23/147
摘要： A power screwdriver has a drive motor and a tool holder arranged in a housing, a driving coupling including a driving coupling part driven by the motor and a driven coupling part, and a locking coupling arranged between the driving coupling and the tool holder, wherein the couplings are arranged so that when the tool holder is pressed against a screw the coupling parts of the driving coupling are connected with one another and torque from the motor is transmitted to the tool holder in a normal manner, when thereafter a limit torque is attained the locking coupling is overrun, the driving coupling part of the driving coupling is arrested, and the driven coupling part of the driving coupling is disconnected from the driving coupling part, and when the tool holder is pressed stronger against the screw which is difficult to screw in the driven coupling part displaces and follows the driving coupling part and is again connected with the latter so as to again provide for transmission of the torque from the motor to the tool holder.
摘要翻译： 电动螺丝刀具有驱动电动机和设置在壳体中的工具架，包括由电动机驱动的驱动联接部件和从动联接部件的驱动联接器以及布置在驱动联接器和工具夹具之间的锁定联接器，其中， 联接器被布置成使得当工具保持器被按压在螺钉上时，驱动联接器的联接部分彼此连接，并且来自电动机的扭矩以正常方式传递到工具保持器，此后，达到极限扭矩 锁定联轴器超限，驱动联轴器的驱动联轴器部分被阻止，驱动联轴器的从动联轴器部分与驱动联轴器部分脱开，并且当工具夹紧力靠在螺丝上时难以拧入 驱动联轴器部件移动并跟随驱动联接部件，并且再次与后者连接，以便再次提供传动 从电机到工具架的转矩。
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公开(公告)号：US4458565A
公开(公告)日：1984-07-10
申请号：US427262
申请日：1982-09-29
申请人： Gunter Zilly , Erich Borst , Brigitte Hertell , Fritz Schadlich , Heinz Walz , Steffen Wunsch
发明人： Gunter Zilly , Erich Borst , Brigitte Hertell , Fritz Schadlich , Heinz Walz , Steffen Wunsch
IPC分类号： B25B23/157 , B25B23/14 , B25B23/147
CPC分类号： B25B23/147 , B25B23/141
摘要： A torque limiting power screwdriver includes a housing in which there is supported for rotation and axial displacement a screwdriver spindle. A transmission transmits power from a motor to the screwdriver spindle. A torque overload coupling and a separating coupling are interposed in the transmission, being operative for interrupting the transmission of torque from the motor to the screwdriver spindle. The separating coupling is coupled and uncoupled in response to axial displacement of the screwdriver spindle between its coupling and uncoupling positions. The axial movement of the spindle is accomplished by a trigger movably mounted on the housing and connected by a Bowden cable or a lever transmission to the spindle. The spindle is connected by an axially movable coupling with an output member, especially with a bevel gear transmission accommodated in an angular head housing portion. A switching trigger is used to energize and de-energize the motor. The trigger and the switching trigger can be combined into a trigger unit, thus making possible one-hand operation. The trigger and switching trigger are so constructed and arranged that they force the succession of energization of the motor and coupling of the separating coupling during the commencement of operation, and the succession of uncoupling the separating coupling and de-energization of the motor during the termination of operation.
摘要翻译： 扭矩限制电动螺丝刀包括一个壳体，其中支撑有旋转和轴向位移的螺丝刀主轴。 变速器将电动机从电动机传递到螺丝刀主轴。 扭矩过载联接器和分离联轴器插入变速器中，用于中断从电动机到螺丝刀主轴的转矩传递。 分离联接器响应于螺丝刀主轴在其联接和解耦位置之间的轴向位移而联接和分离。 主轴的轴向运动通过可移动地安装在壳体上的触发器来实现，并通过鲍登缆绳或杠杆传动器连接到主轴。 主轴通过与输出构件的轴向移动的联接件连接，特别是与容纳在角度头壳体部分中的锥齿轮传动装置连接。 开关触发器用于给电机通电和断电。 触发器和开关触发器可以组合成一个触发单元，从而使单手操作成为可能。 触发和切换触发器被构造和布置成使得它们在操作开始期间迫使电动机的连续通电和分离耦合的耦合，并且在终止期间连续地解耦电动机的分离耦合和断电 的操作。
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公开(公告)号：US3955628A
公开(公告)日：1976-05-11
申请号：US462187
申请日：1974-04-18
CPC分类号： B25D16/006 , B25D16/003 , B25D2216/0015 , B25D2216/0023 , B25D2216/0038 , B25D2216/0046
摘要： A driven output shaft is mounted in a housing and has freedom of limited axial displacement between a first and a second position. A biasing spring permanently biases the output shaft to the first position. An impact member surrounds the output shaft and has a plurality of angularly spaced first axial projections which interdigitate with angularly spaced second axial projections provided on a disk member axially fixed on and turnably surrounding the output shaft. A retaining arrangement is provided in the housing and is engageable with the disk member to prevent rotation of the same when an axial force is exerted upon the output shaft counter to the action of the biasing spring, causing axial displacement of the output shaft to the second position thereof, and engagement of the disk member with the retaining arrangement.
摘要翻译： 驱动输出轴安装在壳体中，并且在第一和第二位置之间具有有限的轴向位移的自由度。 偏置弹簧将输出轴永久地偏压到第一位置。 冲击构件围绕输出轴并且具有多个角度间隔开的第一轴向突起，该第一轴向突起与设置在轴向固定在可转动地围绕输出轴的盘构件上的有角度间隔开的第二轴向突起相交错。 保持装置设置在壳体中，并且当与偏压弹簧的作用相反的轴向力作用在输出轴上时可与盘构件接合以防止其旋转，导致输出轴向第二 位置，以及盘构件与保持装置的接合。
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公开(公告)号：US5427483A
公开(公告)日：1995-06-27
申请号：US137111
申请日：1993-11-02
IPC分类号： B27C1/10
CPC分类号： B27C1/10 , Y10T409/306384
摘要： An electric hand plane has a wedge-shaped body having a lower wedge surface adapted to rest on a workpiece and an upper wedge surface, a plane housing supported on the upper wedge surface of the wedge-shaped body and having a counter-surface, a device for producing a clamping force between the upper wedge surface of the wedge-shaped body and the counter-surface of the housing, and a single handle operative for cancelling the clamping force during an adjustment and also for displacement of the wedge-shaped body, and a gear mechanism means arranged so that the handle displaces the wedge-shaped body relative to the plane housing via the gear mechanism means by rotation.
摘要翻译： PCT No.PCT / DE93 / 00110 Sec。 371日期：1993年11月2日 102（e）1993年11月2日日期PCT提交1993年2月10日PCT公布。 出版物WO93 / 15885 日期：1993年8月19日。电手平面具有楔形体，其具有适于搁置在工件上的下楔形表面和上楔形表面，支撑在楔形体的上楔形表面上的平面壳体， 具有相对表面，用于在楔形体的上楔形表面和壳体的相对表面之间产生夹紧力的装置以及用于在调节期间消除夹紧力并且还用于位移的单个手柄 以及齿轮机构装置，其布置成使得手柄通过旋转经由齿轮机构装置相对于平面壳体移位楔形体。
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公开(公告)号：US4274642A
公开(公告)日：1981-06-23
申请号：US7260
申请日：1979-01-29
申请人： Steffen Wunsch
发明人： Steffen Wunsch
IPC分类号： B23B31/173 , B23B31/12 , B23B31/04
CPC分类号： B23B31/1238 , B23B31/123 , Y10T279/17615 , Y10T279/17632 , Y10T279/32 , Y10T279/3431
摘要： In order to improve the holding power of a tool chuck, especially a tool chuck for use with percussion or impact drills, without the use of elastic friction elements that impede intentional opening and closing, the invention describes a tool chuck in which cooperating, preferably conical surfaces disposed respectively, on the stationary collet and the rotating structure of the chuck engage one another when the chuck is closed and clamps the inserted tool. Additional relative rotation imparted to the rotating structure with respect to the collet causes clamping forces to be applied to the inserted tool and further causes the cooperating conical surfaces to be pressed against one another, thereby generating high surface pressures which oppose the unintentional opening of the chuck even during the presence of axial percussion shocks.
摘要翻译： 为了提高工具卡盘的保持力，特别是用于冲击钻或冲击钻的工具卡盘，而不使用妨碍有意打开和关闭的弹性摩擦元件，本发明描述了一种工具卡盘，其中配合，优选锥形 当卡盘闭合并夹持插入的工具时，分别布置在固定夹头上并且卡盘的旋转结构彼此接合的表面。 相对于夹头赋予旋转结构的额外的相对旋转导致夹紧力被施加到插入的工具上，并且进一步使配合的锥形表面彼此压靠，从而产生与卡盘的无意打开相对的高表面压力 即使在轴向敲击冲击的存在下。
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公开(公告)号：US3931744A
公开(公告)日：1976-01-13
申请号：US476139
申请日：1974-06-03
申请人： Steffen Wunsch
发明人： Steffen Wunsch
CPC分类号： B25D16/00 , B25D16/006 , B25D2211/064 , Y10T74/18024 , Y10T74/18304
摘要： An axially reciprocable rotary spindle is mounted in the housing, and a first biasing arrangement urges the spindle in one axial direction outwardly of the housing. An impact member is mounted on this spindle for rotation with but limited axial displacement relative to the same and has an outer circumferential surface provided with cams inclined axially and circumferentially of the spindle and formed with one interruption per cam. A second biasing arrangement urges the impact member also in the aforementioned axial direction, and a fixedly mounted guide ring surrounds the impact member and forms a race for roller bodies corresponding in number to the interruptions and which roll in contact with the circumferential surface and the cam.
摘要翻译： 轴向往复运动的旋转主轴安装在壳体中，并且第一偏压装置将心轴沿壳体的一个轴向方向推动。 冲击构件安装在该主轴上以相对于其旋转但具有有限的轴向位移，并且具有设置有沿主轴倾斜且周向倾斜的凸轮的外周面，并且每个凸轮形成一个中断。 第二偏压装置还在上述轴向方向上推动冲击构件，并且固定安装的导向环围绕冲击构件并形成对应于中断的滚子体的座圈，并且其与圆周表面和凸轮接触地滚动 。
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公开(公告)号：US4683659A
公开(公告)日：1987-08-04
申请号：US851323
申请日：1986-04-11
申请人： Steffen Wunsch , Gunter Zilly , Helmut Schneider
发明人： Steffen Wunsch , Gunter Zilly , Helmut Schneider
摘要： A chain saw is provided with an oil pump for supplying oil to the saw chain. The pump includes a piston immersed in a chamber formed in the housing of the saw and rotatable by a gear rigidly connected to the piston and rotated by another gear driven by a motor. The gear connected to the piston has an inclined end face which wobbles upon the rotation of the gear and is pressed by a helical spring against a supporting ball which is positioned in a recess of a flange bolt manually turnable from the outside of the housing. The path of adjustment of the supporting ball is greater than the diameter of the piston. The working pressure generated by the spring is translated directly to the piston.
摘要翻译： 链锯设有用于向锯链供油的油泵。 该泵包括浸入在壳体内的腔室中的活塞，可通过刚性地连接到活塞的齿轮旋转，并由电动机驱动的另一齿轮旋转。 连接到活塞的齿轮具有倾斜端面，该倾斜端面在齿轮旋转时摆动，并被螺旋弹簧压靠在支撑球上，所述支撑球位于可从壳体的外部手动转动的法兰螺栓的凹部中。 支撑球的调节路径大于活塞的直径。 由弹簧产生的工作压力直接转换到活塞。
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公开(公告)号：US4562389A
公开(公告)日：1985-12-31
申请号：US536194
申请日：1983-09-27
IPC分类号： B25B23/151 , B23P19/06 , B25B23/14 , B25B23/147 , H02H7/085 , H02P29/00 , H02P7/00
CPC分类号： H02H7/085 , B23P19/066 , B25B23/147 , Y02P70/185
摘要： To permit reliable turn-OFF of the motor when the torque of the motor is sufficient to provide for reliable seating of a screw or nut being driven thereby, start conditions of the motor are sensed, either in form of low-current condition or high power factor; high-torque conditions are sensed by low power factor, or high-current, in dependence on the desired torque level which results, respectively, in a comparatively steep phase angle-torque or current level-torque curve. A switch control is energized to turn-OFF the motor current if the phase angles, or the motor current, respectively, are beyond predetermined levels. To prevent in-rush current, or high power factors from affecting the operation of the turn-OFF system, timing circuits are provided to disable the turn-OFF system when the motor is first turned-ON or if the phase angle difference, as determined by time-comparator networks, between current and voltage, is below a predetermined value. Timing duration of at least one of the timing circuits can be controlled as a function of motor temperature to provide for linear response of the system, regardless of changes of motor operating parameter versus torque characteristics under varying motor temperature conditions.
摘要翻译： 为了允许马达的可靠关闭，当马达的扭矩足以提供由其驱动的螺钉或螺母的可靠安置时，电动机的起动条件以低电流状态或大功率的形式被感测 因子; 根据分别在相对较陡的相位角 - 转矩或电流电平 - 转矩曲线中产生的期望转矩水平，通过低功率因数或大电流检测高扭矩条件。 如果相位角或电动机电流分别超过预定水平，则开关控制器通电以关闭电动机电流。 为了防止浪涌电流或高功率因素影响关断系统的操作，提供定时电路以在电动机首次接通时禁止关闭系统，或者如果确定了相位角差 通过时间 - 比较器网络，在电流和电压之间，低于预定值。 可以根据电动机温度的不同来控制至少一个定时电路的定时持续时间，以提供系统的线性响应，而不管电动机工作参数对变化的电动机温度条件下的转矩特性的变化。
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公开(公告)号：US4463293A
公开(公告)日：1984-07-31
申请号：US477624
申请日：1983-03-22
摘要： A power screwdriver that is equipped with a spring coupling between the motor drive and the tool spindle, a signal that indicates that a certain value of torque has been overstepped, at which the screwdriver must be sopped, first causes reversal of the motor, but before the motor appreciably turns in the reverse direction, powers shut-off, allowing the motor to coast. After another brief interval, power is reapplied to the motor in the original direction, again briefly. In this way it is possible for the final shut-off to occur when the motor is stopped and the spring is unstressed, avoiding oscillations of the motor-spring system. A triac bridge circuit makes possible quick reversals and brief applications of power. In such a bridge circuit, precautions must be taken to be sure one pair of triacs is extinguished before the other pair is ignited.
摘要翻译： 一个电动螺丝传动装置，在电动机驱动器和工具主轴之间配有一个弹簧联轴器，一个指示扭矩已经超过某一特定值的信号，螺丝刀必须在其上被挤压，首先会引起电机的反转，但之前 电机明显转向相反方向，电源关闭，允许电机滑行。 在另一短暂的时间间隔之后，再次简单地向原始方向重新施加电动机。 以这种方式，当电机停止并且弹簧不受应力时，可能发生最终关断，避免电机 - 弹簧系统发生振动。 三端双向可控硅开关桥电路可以实现快速反向和功率的简单应用。 在这样一个桥接电路中，必须注意确保一对三端双向可控硅开关在另一对点火之前熄灭。
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