Abstract: An electric ratchet wrench includes a wrench main casing, a motor, a ratchet head casing and a motor fixing member. The wrench main casing has two main casing locking parts, the two main casing locking parts are symmetrically arranged at one end of the wrench main casing, the motor is accommodated in the wrench main casing, the ratchet head casing comprises a plug-connected part, and the plug-connected part is inserted into the aforementioned end of the wrench main casing. The motor fixing member is accommodated in the wrench main casing and located between the plug-connected part and the motor, the motor fixing member is used to fix the motor, and the motor fixing member is clamped and positionally limited between one end edge of the plug-connected part and the main casing locking parts.

Abstract: An electric ratchet wrench comprises a wrench main casing, a motor, a ratchet head casing and a motor fixing member. The wrench main casing comprises two main casing locking parts, the two main casing locking parts are symmetrically arranged at one end of the wrench main casing, the motor is accommodated in the wrench main casing, the ratchet head casing comprises a plug-connected part, and the plug-connected part is inserted into the aforementioned end of the wrench main casing. The motor fixing member is accommodated in the wrench main casing and located between the plug-connected part and the motor, the motor fixing member is used to fix the motor, and the motor fixing member is clamped and positionally limited between one end edge of the plug-connected part and the main casing locking parts. Thereby, effects of reducing structural complexity and improving ease of assembly can be achieved.

Abstract: An electric vehicle transmission mechanism which is applied to drive a chain wheel of an electric vehicle is provided. The electric vehicle transmission mechanism includes a transmission shaft, an output shaft, a lower bearing and an upper bearing. The transmission shaft is connected to the chain wheel and has a transmission axial direction, and the transmission shaft includes a transmission portion. The output shaft includes an output portion engaged with the transmission portion, and the output shaft has an output axial direction substantially perpendicular to the transmission axial direction. The lower bearing is sleeved on the output shaft. The upper bearing is sleeved on the output shaft and located between the lower bearing and the output portion.

Abstract: An electric vehicle transmission mechanism which is applied to drive a chain wheel of an electric vehicle is provided. The electric vehicle transmission mechanism includes a transmission shaft, an output shaft, a lower bearing and an upper bearing. The transmission shaft is connected to the chain wheel and has a transmission axial direction, and the transmission shaft includes a transmission portion. The output shaft includes an output portion engaged with the transmission portion, and the output shaft has an output axial direction substantially perpendicular to the transmission axial direction. The lower bearing is sleeved on the output shaft. The upper bearing is sleeved on the output shaft and located between the lower bearing and the output portion.

Abstract: A power tool has a clamping mechanism having an assembling mount and two clamping blocks. The assembling mount has a main body, a receiving recess defined in the main body, two first limiting troughs communicating with the receiving recess, and a through hole defined through a bottom of the receiving recess. The two clamping blocks are disposed in the receiving recess. Each one of the two clamping blocks has an abutting face corresponding to the bottom of the receiving recess in shape and facing to the bottom of the receiving recess. One of the two clamping blocks has two limiting ribs respectively inserted in the two first limiting troughs. The two limiting ribs respectively guided and blocked by the two first limiting troughs to prevent the clamping block from sliding downward along the bottom of the receiving recess.

Abstract: A power wrench includes an output spindle and a socket member. The output spindle has an axial through hole that extends through the output spindle and that open at two axially opposite ends of the output spindle. The socket member is connected to one of the axially opposite ends and has a first socket hole aligned with the axial through hole and configured to engage a nut or the like. The axial through hole is configured to permit passage of a bolt when the nut is tightened by the socket member.

Abstract: A power wrench includes an output spindle and a socket member. The output spindle has an axial through hole that extends through the output spindle and that open at two axially opposite ends of the output spindle. The socket member is connected to one of the axially opposite ends and has a first socket hole aligned with the axial through hole and configured to engage a nut or the like. The axial through hole is configured to permit passage of a bolt when the nut is tightened by the socket member.

Abstract: A power operated dispensing tool includes a housing having a material packing receiving space, and a rod disposed within and movable relative to the housing and having a plunger head that is disposed in the material packing receiving space. The rod is operably coupled to a power transmitting mechanism so as to make a forward movement driven by a power of a motor through the power transmitting mechanism to discharge a dispensing material in the material packing receiving space. The rod has an initiating portion disposed to actuate a sensing member in the housing to deactivate the motor when the rod is moved forwardly to a first stop position. The rod can be moved manually to a second stop position to project the plunger head outwardly so as to permit a plunger kit to be attached thereto.

Abstract: A medical electric tool has a grip portion and a driving portion. The grip portion has a combining protrusion, two combining channels, and a locking device. The combining channels are defined respectively in two sides of the combining protrusion. The locking device is mounted in the combining protrusion and has two locking blocks and two recoil springs. Each locking block has an engaging segment. The engaging segment is formed on one end of the locking block and extends into one of the combining channels. The driving portion is detachably mounted on the combining protrusion on the grip portion and has a bottom face and two engaging ribs. Each engaging rib has an end provided with an engaging hook selectively engaging with the engaging segment of a corresponding one of the locking blocks.

Abstract: A power operated dispensing tool includes a housing having a material packing receiving space, and a rod disposed within and movable relative to the housing and having a plunger head that is disposed in the material packing receiving space. The rod is operably coupled to a power transmitting mechanism so as to make a forward movement driven by a power of a motor through the power transmitting mechanism to discharge a dispensing material in the material packing receiving space. The rod has an initiating portion disposed to actuate a sensing member in the housing to deactivate the motor when the rod is moved forwardly to a first stop position. The rod can be moved manually to a second stop position to project the plunger head outwardly so as to permit a plunger kit to be attached thereto.

Abstract: A medical electric tool has a grip portion and a driving portion. The grip portion has a combining protrusion, two combining channels, and a locking device. The combining channels are defined respectively in two sides of the combining protrusion. The locking device is mounted in the combining protrusion and has two locking blocks and two recoil springs. Each locking block has an engaging segment. The engaging segment is formed on one end of the locking block and extends into one of the combining channels. The driving portion is detachably mounted on the combining protrusion on the grip portion and has a bottom face and two engaging ribs. Each engaging rib has an end provided with an engaging hook selectively engaging with the engaging segment of a corresponding one of the locking blocks.

Abstract: An electric caulking gun has a body and an actuating assembly. The body has a pushing shaft, a motor, a gearbox, a transmission device, a circuit board and a switch. The gearbox has a sun gear with multiple mounting slots. The actuating assembly is mounted in the body, is connected to the switch and engages the sun gear and has a connecting arm, a linking arm, an actuating element, an oscillating arm and a pressing button. The connecting arm is pivotally connected to the switch. The linking arm is connected to the connecting arm. The actuating element is mounted in the body, selectively engages one of the mounting slots and has a wedge mount and an engaging block. The oscillating arm is connected to the body and is connected to the connecting arm. The pressing button is movably mounted in the body and is connected to the oscillating arm.

Abstract: An electrical caulking gun has a gun body and a clutching device. The clutching device has a clutching switch, a linking lever, a clutching block and a block spring. The clutching switch is mounted on the gun body and has a pressed segment and a pushing segment having an inclined pushing surface. The linking lever is pivotally mounted in the gun body and has an abutting end and a pushing end. The abutting end abuts with the pushing surface of the clutching switch. The clutching block has an inclined pushed surface and an engaging rod. The engaging rod detachably engages a transmission device of the caulking gun. The block spring provides a force to push the engaging rod on the clutching block to engage the transmission device.

Abstract: An electric caulking gun has a body and an actuating assembly. The body has a pushing shaft, a motor, a gearbox, a transmission device, a circuit board and a switch. The gearbox has a sun gear with multiple mounting slots. The actuating assembly is mounted in the body, is connected to the switch and engages the sun gear and has a connecting arm, a linking arm, an actuating element, an oscillating arm and a pressing button. The connecting arm is pivotally connected to the switch. The linking arm is connected to the connecting arm. The actuating element is mounted in the body, selectively engages one of the mounting slots and has a wedge mount and an engaging block. The oscillating arm is connected to the body and is connected to the connecting arm. The pressing button is movably mounted in the body and is connected to the oscillating arm.

Abstract: An electrical caulking gun has a gun body and a clutching device. The clutching device has a clutching switch, a linking lever, a clutching block and a block spring. The clutching switch is mounted on the gun body and has a pressed segment and a pushing segment having an inclined pushing surface. The linking lever is pivotally mounted in the gun body and has an abutting end and a pushing end. The abutting end abuts with the pushing surface of the clutching switch. The clutching block has an inclined pushed surface and an engaging rod. The engaging rod detachably engages a transmission device of the caulking gun. The block spring provides a force to push the engaging rod on the clutching block to engage the transmission device.

Abstract: A rechargeable motor-driven ratchet wrench having power-off protection of the present invention includes a motor, a rechargeable battery and a power-off protection device. When the loaded current of the motor exceeds a set default value of a reference circuit, the power-off protection device disconnects the power supply of the rechargeable battery, so as to stop the motor operation. With the circuit design of the power-off protection device, the ratchet wrench can be ensured to provide usage safety and also usage lifespan of the ratchet wrench can be extended.

Abstract: An electric polishing gun has a body, a rechargeable battery, a drive motor, a transmitting device and an actuating device. The body has a battery seat, a handle section, a circuit board, a switch, a trigger and a holding cap. The rechargeable battery is attached detachably to the battery seat of the body to supply electric power to the electric polishing gun. The drive motor is mounted in the body, is electrically connected to switch, the trigger and the rechargeable battery and has a rotating shaft and multiple engaging teeth. The transmitting device is connected to the drive motor, is mounted in the holding cap and has a bevel gear and a mounting bracket. The actuating device is connected detachably to the transmitting device and has a cover, a drive shaft, an eccentric segment and an actuating segment.

Abstract: An electric caulking gun has a body, a gearbox, a caulking barrel, a pushing device, a driving assembly, an actuating assembly, a motor and a power source. The body has a mounting section and a handle section. The gearbox is mounted in the body and has a seat and a mounting sheath. The caulking barrel is connected to the gearbox. The pushing device is connected movably to the gearbox and has a rack, a linking sheet, two pushing shafts and a pushing disc. The driving assembly is mounted in the gearbox. The actuating assembly is mounted between the gearbox and the body. The motor is mounted in the body between the mounting section and the mounting sheath of the gearbox. The power source is connected detachable to the handle section of the body.

Abstract: An electric grinding gun has a body, a gear reduction device, a holding cap, and an actuating device. The body has a casing, a rechargeable battery, a protective circuit board, a switch, a trigger, a motor, a cooling fin and a mounting barrel. The gear reduction device is rotatably mounted in the mounting barrel and has a seat, two planet gears and a gear ring. The seat is rotatably mounted in the mounting barrel and has a shaft hole, two gear recesses and a connecting axle. The holding cap is securely mounted around the mounting barrel to hold the gear reduction device in the mounting barrel and has an inner thread and a through hole. The actuating device is connected detachably to the seat of the gear reduction device and has a panel and an adhering layer.

Abstract: An electric grinding gun has a body, a gear reduction device, a holding cap, and an actuating device. The body has a casing, a rechargeable battery, a protective circuit board, a switch, a trigger, a motor, a cooling fin and a mounting barrel. The gear reduction device is rotatably mounted in the mounting barrel and has a seat, two planet gears and a gear ring. The seat is rotatably mounted in the mounting barrel and has a shaft hole, two gear recesses and a connecting axle. The holding cap is securely mounted around the mounting barrel to hold the gear reduction device in the mounting barrel and has an inner thread and a through hole. The actuating device is connected detachably to the seat of the gear reduction device and has a panel and an adhering layer.