A switch (30) for a hand-held power tool (10) or as a component of a hand-held power tool (10), which has an electric drive motor (16) that can be switched by the switch (30). The switch (30) has a switch housing (33) with a switch chamber (35) in which a switch actuator (75) that can be moved between at least two switch positions (ML, MR) is arranged in order to actuate an electric switch element, said switch actuator being kinetically coupled, by means of a transmission element (70), to a switch (30) actuation element (32), which is arranged outside the switch housing (33) and can be moved between at least two actuation positions (R, L), wherein the transmission element (70) passes through a through-opening (54) on a wall of the switch housing (33) such that the switch actuator (75) can be moved by moving the actuation element (32) in order to actuate the switch element (24). A rotary bearing (77) is arranged in the through-opening (54), the transmission element (70) being rotatably mounted on the rotary bearing about a rotational axis (D).

A trigger switch may include a first urging member urging a trigger, a shaft including a first end attached to the trigger, a first movable member connected to a second end of the shaft, a second movable member , a second urging member located between the first movable member and the second movable member, and a contact portion to be in contact with the second movable member moved in a depressing direction. In response to a depressing operation on the trigger, the first movable member, the second movable member, and the second urging member move in the depressing direction until the second movable member comes in contact with the contact portion. The first urging member urges the trigger. In response to an additional depressing operation on the trigger with the second movable member in contact with the contact portion, the first movable member moves in the depressing direction, and the second urging member urges the first movable member.

The invention provides an electronic device, a PCB and an electric tool; comprises a main body, a first electric connecting part, a variable resistor, a speed regulating contact, a reversing electric connecting part, a reversing contact, a speed regulating handle and a reversing handle, the first electric connecting part is fixedly connected with the main body, and one end of the first electric connecting part is exposed out of the main body; one end of the speed regulating handle is of a cylindrical structure, the end part of the speed regulating handle is provided with an opening, one end of the main body is provided with a column, the opening end of the speed regulating handle is movably sleeved on the column through an elastic piece and forms a first space with the main body; the speed regulating contact and the variable resistor are arranged in the first space.

The invention provides an electronic device, a PCB and an electric tool; comprises a main body, a first electric connecting part, a variable resistor, a speed regulating contact, a reversing electric connecting part, a reversing contact, a speed regulating handle and a reversing handle, the first electric connecting part is fixedly connected with the main body, and one end of the first electric connecting part is exposed out of the main body; one end of the speed regulating handle is of a cylindrical structure, the end part of the speed regulating handle is provided with an opening, one end of the main body is provided with a column, the opening end of the speed regulating handle is movably sleeved on the column through an elastic piece and forms a first space with the main body; the speed regulating contact and the variable resistor are arranged in the first space.

The invention relates to an electrical switch (30) for an electrical appliance (2), in particular for a power tool, which has at least two switching contacts (34, 36), which can be jointly moved between a switched-off position (38), in which the switching contacts (34, 36) have no electrical connection to a counter contact (42) of the switch (30), and a switched-on position (40), in which the switching contacts (34, 36) are electrically connected to the counter contact (42). To maintain a contact resistance of the switch (30) at a largely constant value over the service life, it is proposed to arrange and/or design the switching contacts (34, 36) and/or the counter contact (42) such that, when the switch (30) transitions between the switched-off position (38) and the switched-on position (40), the switching contacts (34, 36) successively enter into electrical contact with the counter contact (42) or successively break the electrical contact.

An electrical switch unit for use in controlling operation of an electrical device, the electrical switch unit including: an electrical switch unit housing for housing at least a pair of electrical switching contacts of the electrical switch unit, said electrical switch unit housing including a first housing member and a second housing member that are configured for attachment together at peripheral regions of the first and second housing members so as to cooperatively form an enclosed space for housing the pair of electrical switching contacts therein; an actuator member operably-connected with at least one of the pair of electrical switching contacts, the actuator being configured for movement relative inwardly and outwardly of an opening in the electrical switch unit housing so as to arrange the pair of electrical switching contacts into at least one of a closed configuration wherein power is able to be supplied from a power source to motor or other electrically-operable element of the electrical device via the pair of electrical switching contacts, and, an opened configuration wherein power is not able to be supplied from the power source to the motor or other electrically-operable element of the electrical device via the pair of electrical switching contacts; and an sealing element including an elastically-resilient polymeric material, said sealing element being configured for location between the first and second housing members and extending about the peripheral regions of the attached first and second housing members so as to occlude passage and ingress of particulates and water into the electrical switch unit housing.

The invention provides an electric drill including a bracket with a handle, a drill rod, a motor assembly, and a switch assembly. The switch assembly includes a first micro switch configured to activate or deactivate the motor assembly, a switch pivotably mounted on the handle through a pivot and cooperating with the first micro switch, and a self-locking button engaged with the switch and configured as: when the self-locking button is in a first state, the self-locking button abuts against the switch to prevent the switch from rotating around the pivot; when the self-locking button is in a second state, the self-locking button is disengaged with the switch, and the switch can rotate around the pivot.

An electric tool is provided with a second switch that is actuated in order for the tool to be used. The second switch is on a second handle that is grasped by the operator with a different hand than the hand that actuates the main trigger switch. Communication between the second switch and the tool occurs with a wireless signal indicating that the second switch has been actuated.

A power tool includes an electric motor, an output member selectively driven by the electric motor and a battery receptacle configured to receive a battery. The power tool also includes a switch trigger moveable between a first position and a second position. The switch trigger inhibits electrical communication between the battery and the electric motor while the switch trigger is in the first position. The switch trigger operates a switch to provide electrical communication between the electric motor and the battery while the switch trigger is in the second position. A lock actuator prevents movement of the switch trigger to the second position while the lock actuator is in a locked position, and the lock actuator permits movement of the switch trigger to the second position while in an unlocked position. The lock actuator is biased into the unlocked position while the battery is positioned in the receptacle.

A trigger switch includes: a housing; a trigger provided outside the housing; a plunger that connects the trigger to the housing so as to approach or separate from the housing, and includes a slider disposed inside the housing; a first printed wiring board that is disposed inside the housing and includes a sliding resistor configured to contact the slider and a control element that configures a control circuit together with the sliding resistor; and a second printed wiring board that is disposed inside the housing separately from the first printed wiring board and electrically connected to the first printed wiring board, and includes a power element configured to supply electric current based on a signal of the control element.