1516results about "Portable percussive tools" patented technology

An impact tool includes: a motor; a motor housing portion that houses the motor; a grip portion extending downward from the motor housing portion; a hammer rotated by the motor; an anvil that is impacted by the hammer in a rotation direction; a hammer housing portion that houses the hammer; a prop portion arranged on a front side of the grip portion and extending below the motor housing portion or the hammer housing portion; a battery holding portion which is connected to the grip portion and the prop portion and to which a battery pack is detachably attached; and a light emitter unit that is held at a front portion of the hammer housing portion and includes a plurality of light emitters arranged in the rotation direction around the anvil. A lead wire electrically connected to the light emitter unit passes through an inside of the prop portion.

Power tool devices described herein include a motor, an actuator configured to be actuated by a user, a plurality of power switching elements configured to drive the motor, a gate driver coupled to the plurality of power switching elements and configured to control the plurality of power switching elements, a first printed circuit board (PCB), an antenna, and a combined chip. The combined chip is located on the first PCB and is coupled to the actuator, the antenna, and the gate driver. The combined chip includes a memory and an electronic processor configured to determine that the actuator has been actuated, and provide, in response to determining that the actuator has been actuated, a signal to the gate driver, control the signal based on the motor position information, wirelessly transmit power tool device information to an external device, and wirelessly receive configuration information from the external device via the antenna.

Disclosed herein are surgical impact tools and methods of use thereof. The surgical impact tools can include a roller assembly, an impact structure, and a tool holder. The roller assembly can be connected to a motor and include a plurality of rollers supported by a respective roller arm. The impact structure can define a spring and an impact cavity including forward and reverse impact surfaces. The impact structure can include a wall comprising a plurality of thread elements connected to the wall and engageable with the roller assembly. Each of the thread elements can include a pair of helical end surfaces and a pair of axially extending surfaces that are engaged by the plurality of rollers. During use rotation of the roller assembly against the helical ends of the thread elements can cause axial movement of the impact structure to apply a load on the spring and generate impact forces.

A surgical impact tool and method of use are disclosed. The surgical impact tool may include a roller assembly, an impact structure, and a tool holder. The roller assembly includes a plurality of rollers connected to a motor and supported by respective roller arms. The impact structure may define a spring and an impact cavity including a front impact face and a rear impact face. The impact structure may include a wall with a plurality of thread elements connected to the wall and engageable with the roller assembly. Each of the thread elements may include a pair of helical end faces and a pair of axially extending faces that engage the plurality of rollers. In use, rotation of the roller assembly relative to the helical ends of the thread elements may axially move the impact structure to load the springs and generate an impact force.

The utility model relates to the field of percussion drills, and particularly provides a percussion drill convenient to switch modes. The percussion drill comprises a percussion drill body, a driven assembly and a telescopic assembly, the telescopic assembly comprises a telescopic column, the left end of the telescopic column is fixedly connected to the output end of the right side of the percussion drill body, the right end of the telescopic column is sleeved with a drill bit, and a driven disc is located on the right side of the drill bit. The technical problems that a flat-head drill bit or a cross-shaped drill bit of an existing percussion drill needs to be disassembled, assembled and replaced, drilling work is often high in repeatability, frequent disassembly, assembly and replacement of the drill bit are troublesome, efficiency is affected, the connecting position of a transmission structure of the percussion drill and the drill bit is prone to being abraded, and convenience is not achieved are solved. And abrasion of the joint of the output end of the percussion drill body caused by repeated disassembly is avoided, and the percussion drill is simple and stable in overall structure, convenient to use and good in practicability.

A rotary hammer includes a housing and a tool receptacle extending from a first end of the housing. A dust box is coupled to the housing and a motor is positioned within the housing. The motor defines a motor axis. A drive assembly is rotated by the motor about a working axis. The drive assembly is arranged relative to the motor so that the motor axis is at an oblique angle relative to the working axis.

An impact tool having a split anvil assembly includes an internal anvil portion fixed inside a housing of the impact tool and an external anvil portion that is removably attached to the internal anvil portion and extends outside of the housing. The external anvil portion includes a retractable pin biased to an extended position to engage the internal anvil portion to secure the external anvil portion to the internal anvil portion and depressed to a retracted position to permit the external anvil portion to be disengaged from the internal anvil portion. The internal anvil portion and the external anvil portion may include respective internal and external grooves that interconnect with each other to link the movement of the internal anvil portion to the external anvil portion.

This invention discloses a pneumatic rust remover, comprising a gun-shaped body with a trigger and an on / off valve assembly mounted on the handle, and a cylinder. The gun-shaped body has a cylindrical cavity formed in its barrel section. The cylinder is installed in a cylinder sleeve and, together with the cylinder sleeve, piston, valve seat front cover, and valve seat rear cover, forms an impact assembly. A vibration damping and buffering assembly is installed inside the cylindrical cavity of the gun-shaped body. The vibration damping and buffering assembly consists of a connecting sleeve, an impact isolator, and a cylinder buffer pad. The cylinder buffer pad is press-fitted between the bottom of the cylindrical cavity and the rear end face of the connecting sleeve. The impact isolator is press-fitted onto the front annular surface of the connecting sleeve via a locking nut, and the locking nut is screw-fitted to the cavity opening of the cylindrical cavity. The rear end of the cylinder sleeve passes through the locking nut and extends into the sleeve cavity of the connecting sleeve, where it is screw-connected. An air inlet valve assembly is provided inside the sleeve cavity. This invention offers a comfortable grip, high rust removal efficiency, good shock absorption, and is adaptable to rust removal tools with different functions.

An angle fastening tool includes a handle extending in a front-to-back direction, a motor housing located in front of the handle, a motor located inside the motor housing, a spindle located in front of the motor, extending in a direction crossing the front-to-back direction, and rotated by the motor, a housing that houses the spindle, a tool accessory holder projecting downward from a lower surface of the housing and rotated by the spindle, and a trigger lever provided to project downward from a lower surface of the handle. A lower end of the trigger lever is located at a position closer to a lower surface of the motor housing than to a lower end of the tool accessory holder in an up-down direction.

A percussion tool includes a housing, a percussion mechanism including a striker supported for reciprocation in the housing along a first axis, and an anti-vibration system for attenuating vibration in a direction of the first axis. The anti-vibration system includes a linkage coupling the percussion mechanism to the housing. The linkage permits relative movement between the housing and the percussion mechanism along the first axis. The anti-vibration system also includes a counterweight supported by the percussion mechanism for relative movement therewith along a second axis that is parallel with the first axis. The counterweight reciprocates out of phase with the striker to attenuate vibration in the direction of the first axis.

A hydraulic hammer includes: a cylinder having a first cylinder end and a second cylinder end opposite the first cylinder end; a piston disposed within the cylinder, the piston having a first piston end, the piston being reciprocatingly movable with respect to the cylinder along an axial direction; a valve body disposed on the first cylinder end so as to define a valve body cavity; and a seal carrier sealingly arranged between the first piston end and the first cylinder end and being reciprocatingly movable with respect to the cylinder along the axial direction. The piston is reciprocatingly movable with respect to the seal carrier along the axial direction.

A cam operated apparatus with a cam track (16) and cam follower (12) being engaged with one another, a head element such as a bit operatively connected to the cam track or cam follower means, and rotational drive means such as a motor operatively connected to the other, such that rotational drive causes reciprocal action of the head element and the width (A) of the cam follower means (12) is in the region of 91% to 99%, of the width (B) of the cam track (16), to create a harmonic effect on the head element with low noise and increased power efficiency. Pin-in-wave and wave-in-wave arrangements are described along with tools including the cam operated apparatus.

An electric power tool includes a handle extending in a front-to-back direction, a motor housing disposed in front of the handle, a motor disposed inside the motor housing and having a stator and a rotor, the rotor being rotatable with respect to the stator, a bevel gear configured to rotate integrally with the rotor and having a shaft extending in the front-to-back direction, a spindle rotated directly or indirectly via the bevel gear and extending in a direction crossing the front-to-back direction, a tool accessory holder rotated by the spindle, a housing accommodating the bevel gear and the spindle, and a bearing held by the housing and configured to hold the bevel gear so as to be rotatable.

An anvil for an impact tool including an impact receiving portion at an end of the anvil, the impact receiving portion including a lug having an impact receiving surface that receives impact from a hammer of the rotary power tool, a shank portion extending from the impact receiving portion, a drive portion located at an end of the shank portion opposite from the impact receiving portion, the drive portion including a plurality of drive surfaces configured to engage a tool bit, and a hardened layer formed on at least one of the drive portion or the impact receiving surface, the hardened layer having a higher hardness than a remaining portion of the anvil. The hardened layer is formed by a heating process.

To provide an impact tool which appropriately performs lighting of a peripheral area of an anvil.SOLUTION: An impact tool comprises: a motor; a motor storage part which stores the motor; a grip part which extends from the motor storage part to below; a hammer which is rotated by the motor; an anvil which is impacted in a rotation direction by the hammer; a hammer storage part which stores the hammer; a pole part which is arranged in front of the grip part and extends to a position below the motor storage part or the hammer storage part; a battery holding part which is connected with the grip part and the pole part and in which a battery pack is attached thereto and detached therefrom; and an emitter unit which is held at the front part of the hammer storage part and includes a plurality of emitters around the anvil in the rotation direction. A lead wire passes through inside of the pole part to be electrically connected with the emitter unit.SELECTED DRAWING: Figure 1

The present disclosure relates to a dust collection device, including a dust collection body and a dust collection box inserted into the dust collection body, where the dust collection body has a connecting part for accommodating the dust collection box; an outer surface of one of a buckle plate of the dust collection box and a first side wall of the connecting part is provided with protruding parts higher than a sealing gasket, and the other one is provided with clamping grooves recessed inwards along an outer surface and matched with the protruding parts; and when the dust collection box is inserted into the dust collection body, the protruding parts slide along the outer surface of one of the first side wall and the buckle plate, such that the friction between the first side wall or the buckle plate and the sealing gasket can be isolated.

To achieve compactification of a dust collection part to secure good visibility even if a connection port is provided at a dust collection cup.SOLUTION: A dust collection cup 1 includes a connection port 17 of a flexible hose 31 at the radial outer side of a bit B and the rear relative to a seal plate 8 on an outer peripheral surface of an attachment part 2. The connection port 17 is disposed at a position such that a distance D1 from an axis A1 of the attachment part 2 to a point P1 at an outermost position from the axis A1 in a radial direction is longer than a distance D2 from the axis A1 to a point P2 on an outer peripheral surface of the attachment part 2, which is located at the opposite side of the point P1 across the axis A1 in the radial direction.SELECTED DRAWING: Figure 3

The invention relates to an impact tool and an impact wrench. In a corner impact tool, a working part can be properly illuminated by a lamp. This impact tool is provided with: a grip section extending in the front-rear direction; a motor housing part disposed in front of the grip part; a motor disposed inside the motor housing part; a main shaft disposed in front of the motor, extending in a direction intersecting the front-rear direction, and rotated by the motor; a hammer which is rotated by the main shaft; an anvil which is hit by the hammer in the rotational direction; a tip tool holding part disposed at the lower end of the anvil; a hammer housing that accommodates the main shaft and the hammer; and a light emitting body held in the hammer case.

The utility model discloses a damping device with a better damping effect in a hammer drill shell. The damping device comprises a front shell and a rear shell, the front shell and the rear shell can be connected in a relative axial sliding mode, a movable gap is formed between the front shell and the rear shell, a damping device is arranged at the movable gap between the front shell and the rear shell and comprises a front positioning plate, a damping gasket and a rear positioning plate, and the front positioning plate and the rear positioning plate are installed on the two sides of the damping gasket respectively. And the two sides of the damping washer are respectively positioned and propped against the front shell and the rear shell through the front positioning plate and the rear positioning plate. According to the utility model, the damping device is arranged between the front shell and the rear shell, and the damping device is arranged at the movable gap between the front shell and the rear shell to buffer the vibration between the front shell and the rear shell, so that the vibration acting on the grip during the use and operation of the drill rod can be effectively reduced, the use comfort of an operator is improved, and the adverse effect caused by operation and use is improved; and better positioning, supporting and buffering effects are achieved.

A rotary hammer includes a housing and a mode selection dial supported in the housing. The mode selection dial includes a cam. The housing supports a motor providing a rotational output. The housing supports a linkage moveable between a first position and a second position in response to engagement by the cam. A loss-of-control detection system measures acceleration of the housing and disables the motor upon the acceleration exceeding an acceleration threshold. The housing supports an operating mode detection system including a magnet and a Hall-effect sensor. The magnet is coupled to the linkage and moveable therewith between a third position corresponding to the first position of the linkage and a fourth position corresponding to the second position of the linkage. The Hall-effect sensor provides an output signal indictive of the position of the magnet. The loss-of-control detection system is selectively disabled based upon the output signal.

The utility model relates to the technical field of mechanical anchor bolts, and discloses a pneumatic mechanical anchor bolt sleeve knocking mechanism which comprises a pneumatic knocking mechanism body, a pushing mechanism is arranged outside the pneumatic knocking mechanism body, the pneumatic knocking mechanism body comprises an air inlet connector, and a rear end cover is installed on the inner side of the air inlet connector. A knocking core is fixedly connected to the top of the rear end cover, a knocking sleeve is installed outside the knocking core, an anti-disengaging spring is fixedly connected to the top of the knocking sleeve, a knocking head is fixedly connected to the top of the knocking sleeve, a rear fixing base is fixedly connected to the bottom of the air inlet connector, and a front fixing base is connected to the outside of the knocking sleeve in a sleeving mode. According to the pneumatic mechanical anchor bolt sleeve knocking mechanism, the anchor bolt sleeve is clamped in a concrete hole through the pneumatic knocking mechanism, the operation of knocking and installing the anchor bolt sleeve is completed, and the effects that automatic operation is achieved, manual operation is replaced to execute high-altitude bolt planting operation, efficiency is improved, and construction accidents are reduced are achieved.

A power tool includes a motor, a hammer mechanism, and a housing. The motor has a motor shaft that rotates around a motor axis. The hammer mechanism includes a cylinder and a hammer element adjacent to an air chamber defined within the cylinder and is configured to convert rotary motion of the motor shaft to linear motion of the hammer element along a prescribed hammer axis by utilizing action of an air spring of the air chamber. The housing houses the motor and the hammer mechanism. The motor axis is arranged to be parallel to the hammer axis and to pass through the inside of the cylinder.

The invention discloses an impact tool which comprises a motor, an output shaft, an impact mechanism and a transmission mechanism, the transmission mechanism is configured to transmit torque output by a driving shaft to the output shaft, and the transmission mechanism comprises multiple stages of transmission assemblies; the direct-current power supply at least supplies power to the motor, and the nominal voltage of the direct-current power supply is smaller than 18V; and the fastening torque of the output shaft to a workpiece is greater than or equal to 170N. M. A large torque impact tool powered using a low nominal voltage is provided.

An attachment on a power machine includes an elongated hammer, an elongated tool and at least one electromagnetic coil. The hammer includes an upper end in sealed communication with a gas accumulator and an opposing lower end. The tool includes an upper end having an impact surface and an opposing lower end having a work surface. The tool is configured to be actuated when the lower end of the hammer collides with the impact surface of the tool. The coil surrounds a portion of the hammer and is configured to actuate the hammer into a compression stroke that moves the hammer in a first direction and a firing stroke that is further aided by compressed gas in the gas accumulator to move the hammer in a second opposing direction and cause the hammer to collide with the impact surface of the tool to actuate the tool.

An anvil for use with a power tool may include a shank and ram lug. The stank may have a first end and a second end. The ram lug may extend radially from the second end of the shank. The am lug may include an impact surface configured to receive an impact force from a hammer of the power tool and an impact layer comprising the impact surface. The impact layer may have been formed via a treatment process to have an impact layer depth to an impact layer transitional material interface with an interior region of the ram lug. The impact layer may have a first hardness and the interior region of the ram lug may have a second hardness. The first hardness may be greater than the second hardness.

The invention provides a valveless hydraulic impact mechanism for connection to a tool for processing rock or concrete or both, wherein the position for the opening of the drainage channel is arranged along the cylinder bore so as to be opened and closed by a portion of the reciprocating strike piston, the position for the opening of the connection channel leading to the first drive chamber is arranged along the cylinder bore so as to be opened and closed by a portion of the reciprocating strike piston and the position for the opening of the connection channel leading to the second drive chamber is arranged in the first or second cylinder bore so as to be opened and closed by a portion of the reciprocating accumulator piston such that, with the aid of the strike piston during its motion in the first cylinder bore and the accumulator piston in the first cylinder bore or, if present, the second cylinder bore, at least the second drive chamber acquires periodically alternating pressure for the maintenance of the reciprocating piston motion, wherein the reciprocating strike and accumulator pistons hold the second drive chamber closed for the supply or drainage of driving medium present in the second drive chamber along a distance between the opening of the drainage channel in association with a first turning point of the strike piston and the opening of the connection channel in association with a second turning point of the strike piston, wherein the motion of the strike piston along the distance between the opening of the drainage channel in association with the first turning point of the strike piston and the opening of the connection channel in association with the second turning point of the strike piston takes place during compression of the volume of the accumulator compartment, wherein the magnitude of the volume of the accumulator compartment is adapted to obtain a slow change in pressure in the second drive chamber along the distance between the channel openings and wherein the strike piston and accumulator piston are solely in fluid communication such that the strike piston and accumulator piston do not make direct contact during operation of the mechanism.

A powered fastener driver includes a housing, a cylinder within the housing, the cylinder containing a pressurized gas, a piston within the cylinder and movable from a top-dead-center position to a bottom-dead-center position, a driver blade movably coupled to the piston, a lifter, a drive unit configured to provide torque to the lifter, and a sensor. The driver blade has a plurality of teeth defining a predetermined number of edges. The sensor is configured to detect an edge of one or more of the plurality of teeth and a controller in communication with the drive unit and the sensor. The controller is configured to count a number of edges detected by the sensor, compare the number of detected edges to the predetermined number of edges, and stop the drive unit when the number of detected edges is less than the predetermined number of edges.

An impact wrench is provided with a battery to power the motor. The impact wrench provides improved portability since the impact wrench does not need to be connected to an electrical extension cord or a pneumatic hose. The output drive, motor, batteries and main handle may be aligned along the axial direction of the tool. The batteries may be located between the motor and the main handle.

A power tool may include a housing including first and second clamshell halves. The power tool may include a motor directly supported by the first and second clamshell halves. The power tool may include a gear assembly directly supported by the first and second clamshell halves and operably coupled to the motor. The power tool may include an impact mechanism disposed within the housing between the first and second clamshell halves and operably coupled to the gear assembly, the impact mechanism including a camshaft, an anvil rotationally supported by an anvil support for rotation about an axis, the anvil support being directly supported by the first and second clamshell halves, and a hammer configured to reciprocate along the camshaft and to impart rotational impacts to the anvil in response to rotation of the camshaft.

The electric hammer air cylinder assembly comprises an output shaft and a connecting shaft sleeve, the connecting shaft sleeve is movably connected to the output shaft in an inserted mode, the end, corresponding to the connecting shaft sleeve, of the output shaft is connected with a thread sleeve through threads, and the outer side of the connecting shaft sleeve is provided with threads used for being in threaded connection with the thread sleeve. A drill bit rod is movably inserted into the connecting shaft sleeve, a reset spring movably sleeves the drill bit rod, a sliding sleeve is movably inserted into the output shaft, an impact block is movably connected into the sliding sleeve, the impact block is in sealed connection with the drill bit rod, and a connecting rod is connected to the end, away from the drill bit rod, of the sliding sleeve through a pin shaft. A micro motor is installed at the end, away from the connecting shaft sleeve, of the output shaft, a driving gear is fixedly installed at the shaft end of the micro motor, the side wall of the output shaft is rotationally connected with a driven gear, and the driving gear is meshed with the driven gear. The electric hammer can reduce contact friction of components in the use process of the electric hammer, and the use effect of the electric hammer is further guaranteed.