1121results 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.

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.

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 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.

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.

Impact wrench (1) having an overall shape of a ‘T’ and comprising an upper handle group (2), a lower working group (3) and an intermediate connecting rod (4) connected between the handle group (2) and the working group (3), wherein: - the handle group (2) comprises a first body (2') with two elongated handles (5, 6) extending in opposite directions to each other and transversely to a longitudinal direction (14) of the screwdriver (1), a manual actuating element (7) and a battery seat (8) for receiving an electric battery (9), - the working group (3) comprises a second body (3'), a tool holder shaft (10) rotatably mounted about a pivot axis (R) and capable of carrying a screw bushing, an electric motor (11) powered by the battery (9) and operable by the manual actuating element (7), a gearbox (12) and an impact mechanism (13) connected between the motor (11) and the tool holder shaft (10) to impart rotational and impact impulses, where: - the battery seat (8) consists of a cavity (34) formed in an outer surface of the first body (2') on an operator side (33) of the impact wrench (1), wherein the cavity (34) is open to the outside of the first body (2') on the operator side (33) and on a top surface (35) of the impact wrench (1) opposite the working group (3), - the cavity (34) accommodates the battery (9) over at least half of its thickness (37), measured in the direction of the operator side (33), and / or the battery (9) extends beyond the free ends of the handles (5, 6) in the direction of the operator side (33) by less than one third or less than one quarter of the thickness of the battery (37), measured in the direction of the operator side (33).

To weld a stud dowel at an accurate position while reducing the physical burden on a worker welding the stud dowel. [Solution] The welding surface S is the side surface of the workpiece (1) that intersects with the upward surface or the downward surface of the workpiece (1), and the stud dowel welding device (W) is equipped with a welding gun (10) that holds a stud dowel (4) and welds the tip of the held stud dowel (4) to the welding surface (S), and a support part (20) that supports the welding gun (10) and has a movable mechanism that enables the welding gun (10) to move in a direction perpendicular to the welding surface (S) (Y-Y' direction), and in a first direction (X-X' direction) and a second direction (Z-Z' direction) that are perpendicular to the perpendicular direction, where the first direction and second direction are perpendicular to each other.

An impact tool includes: a motor; a speed reduction mechanism rotated by the motor; a hammer rotated by rotation of the motor transmitted via the speed reduction mechanism; an anvil to be impacted in a rotation direction by the hammer; a motor case accommodating the motor; and a gear case accommodating the speed reduction mechanism. One or both of the motor case and the gear case are made of a magnesium alloy.

A suction device for a releasable connection to a hand-held power tool, in particular to a hammer drill, includes a housing with a drive unit arranged in the housing for generating a suction flow, and at least one locking unit for a mechanical coupling with the hand-held power tool. The coupling includes at least one locking element for direct locking with the hand-held power tool and at least one actuating element used to release the lock of the at least one locking element. The actuating element and / or the locking element are arranged at least partially adjacent the drive unit.

The utility model relates to an electric tool, which is provided with a motor shaft extending along a first direction, an air cylinder extending perpendicular to the first direction, a first gear meshed with the motor shaft, a second gear coaxial and linked with the first gear, and a third gear sleeved on the air cylinder and meshed with the second gear to drive the air cylinder to rotate, a concave first cavity is formed in the end, facing an air cylinder, of a first gear, a third gear extends into the first cavity from the outer surface of the air cylinder, a motor shaft and the first gear have the meshing length L extending in the first direction, and a second gear and the third gear have the meshing length X extending in the first direction; the projection of the meshing length L and the projection of the meshing length X in the first direction are at least partially overlapped, so that the sizes of the two sets of gears meshed in different directions in the first direction are reduced, the internal structure of the electric tool is compact, the overall size of the electric tool is reduced, and miniaturization of the electric tool is achieved.

The utility model relates to an electric tool. The electric tool comprises a shell; the cover body is detachably connected to the shell and provided with an air hole, and the air hole is communicated with an inner cavity of the shell; the pressure release valve is detachably connected to the cover body, and comprises a valve body embedded in the cover body; one end of the elastic piece is connected to the valve body; the movable part is connected to the other end of the elastic part, is matched with the air hole under the elastic action of the elastic part, and is hermetically connected with the cover body; and when the pressure of the inner cavity of the shell is increased to a preset pressure value, the elastic piece is compressed and deformed, the movable piece is separated from the air hole, and air in the inner cavity of the shell flows to the outside of the shell from the air hole. And when the air pressure of the inner cavity of the shell is reduced to be smaller than the preset pressure value, the movable piece is matched with the air hole under the elastic action of the elastic piece, so that the movable piece is hermetically connected with the cover body again. According to the electric tool, redundant gas in the inner cavity of the shell can be exhausted in time, the phenomena of grease overflow and cracking of the reduction gearbox are greatly reduced, and the using effect and the service life of the electric tool are further guaranteed.

Tool fitting device for a power tool, in particular a chipping hammer, including a holding device for receiving and holding a tool shank, a tool cap, and a dust protection device for preventing the penetration of dust into the tool fitting device. The tool cap includes at least one receiving element and the dust protection device includes at least one protruding element corresponding to the receiving element, such that the tool cap and the dust protection device are able to be connected together in a form-fitting manner. Dust protection device for use in a tool fitting device.

A power tool includes: a motor; a rotation mechanism disposed forward of the motor and including an output portion that is rotated about a rotation axis by the motor; a rotation mechanism case that houses at least a part of the rotation mechanism; a case holder having a cylindrical shape and covering a circumference of the rotation mechanism case such that the output portion protrudes forward; and a grip portion to be gripped by an operator. The grip portion includes a left grip portion and a right grip portion that are divided in a left-right direction. The case holder is integrally formed with either the left grip portion or the right grip portion.

A power tool includes a motor having a rotor rotating about a rotational axis and a stator disposed around the rotor, a first bearing rotatably supporting the rotor, a rotating member rotated by the rotor, a second bearing rotatably supporting the rotating member, and a bearing support member supporting the second bearing. The second bearing supports the first bearing via the rotating member.

Position sensing related to a component within a power tool. The component within the power tool is, for example, a hammer of an impact mechanism and can include one or more sensible features that allow a controller of the power tool to precisely determine the position, speed, and acceleration of the component. One or more sensors can be used to determine the rotational position of the hammer and the axial position of the hammer. The rotational position of the hammer can then be used to calculate, for example, rotational speed and acceleration of the hammer. With precise determinations of the rotational and axial position of the hammer, the controller of the power tool is able to precisely time the impact between the hammer and the anvil to optimize the impact between the hammer and the anvil (e.g., to maximize energy transfer between the hammer and the anvil).

Method for controlling a compressor (10) which drives a pneumatic tool, with a maximum allowed pressure (p_max) and an associated compressed air consumption (q_max), the method comprising the step of regulating the operating pressure (p_compr) of the compressor (10), said method comprising: - if the operating pressure (p_compr) is lower than p_max minus a value (Z): controlling the compressor (10) such that the flow rate supplied by the compressor (10) is not limited; - if the operating pressure (p_compr) is higher than or equal to p_max: controlling the compressor (10) such that the flow rate supplied by the compressor (10) does not exceed the compressed air consumption (q_max) at p_max; - if the operating pressure (p_compr) is higher than p_max minus the value (Z) and is lower p_max: controlling the compressor (10) such that the operating pressure (p_compr) remains lower than p_max.

A chuck assembly for a rotary power tool includes a chuck body rotatable about a central axis. The chuck body has a plurality of slots, each oriented at an oblique angle relative to the central axis. The chuck assembly also includes a plurality of jaws, each movable along a respective one of the slots. The chuck assembly also includes a collar coupled to the plurality of jaws. The collar is selectively engageable with the chuck body such that, when engaged, the plurality of jaws are movable along the plurality of slots in response to rotation of the collar.

An impact tool (100, Figure 1) includes a tool housing 102 with a rear motor bearing pocket (142, Figure 2) formed in an inner surface of the housing. A motor 108 is disposed in the tool housing and i

To provide an impact tool with an air spring which can improve an air vent structure from an accommodation space of a striking mechanism.SOLUTION: An impact tool comprises: a motor with a motor shaft in which a first bevel gear is fixed; a striking mechanism which is operably connected through a second bevel gear engaged with the first bevel gear to the motor shaft; a body housing which accommodates the motor and the striking mechanism; and an inner housing which is arranged in the body housing. A closed accommodation space is defined in the body housing to accommodate the striking mechanism and lubricant. The inner housing defines at least partially the accommodation space. The inner housing has an air vent hole formed including an inlet port facing the inside of the inner housing and an outlet port facing the outside of the inner housing. The inlet port is arranged at an inner side in a radial direction relative to an inner peripheral end of a gear tooth in one radial direction of the first bevel gear and the second bevel gear.SELECTED DRAWING: Figure 3