833results about "Portable percussive tools" patented technology

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.

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 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.

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. 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.

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.

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

The utility model relates to an adapter assembly for an electric tool and the electric tool. The switching assembly for the electric tool comprises a shell, a first transmission shaft, a reverse transmission assembly and an output shaft, one end of the first transmission shaft is located in the shell, and the other end of the first transmission shaft is used for being connected with the electric tool; the reverse transmission assembly is contained in the shell and is in transmission connection with the first transmission shaft. One end of the output shaft is in transmission connection with the reverse transmission assembly, and the other end is sleeved with a to-be-released working head; the output shaft rotates under the transmission effect of the reverse transmission assembly, and the rotation direction of the output shaft is opposite to the rotation direction of the first transmission shaft. The switching assembly can drive the working head to be released to rotate reversely, so that the working head clamped in the wall body is released, the releasing efficiency of the working head can be improved, and damage to the wall body can be greatly reduced.

The present invention relates to a butt with recoil absorption for firearm or tool which improves recoil absorption when firing said firearm or using said tool as it features an additional buffering system to support that which is performed by the braking spring.

To provide an impact tool that can smoothly execute each of high-load work and low-load work.SOLUTION: An impact tool is equipped with a motor, a spindle that has a spindle shaft portion and a flange portion provided at a rear part of the spindle shaft portion, and is rotated by the rotational force of the motor, a tool holding shaft that is at least partially disposed ahead of the spindle, a hammer that is supported by the spindle shaft and strikes the tool holding shaft in a rotating direction, and an elastic member that is disposed between a front surface of the flange portion and a supporting surface of the hammer disposed ahead of the flange portion in an axial direction, and an elastic force adjusting mechanism that adjusts the elastic force of the elastic member in an initial state before the motor starts.SELECTED DRAWING: Figure 5

The utility model discloses a kind of electric grab convenient for motor disassembly and assembly.The utility model includes: shell, the bottom of the shell is provided with motor compartment, the bottom end inside the motor compartment is provided with fixed frame and motor, the bottom of the motor compartment is provided with base;Base, the middle position of the top of the both sides of base is rotatably provided with knob, the middle position of the top of one side inside the base is provided with locking structure.The utility model is provided with locking structure, by locking structure and abutment cooperation, the disassembly and assembly between base and motor compartment are facilitated, then by clamping block and fixed frame cooperation, the disassembly and assembly between motor and motor compartment are facilitated, motor disassembly and assembly procedure are simplified, unnecessary component disassembly and assembly procedure is reduced, disassembly and assembly work hour is reduced, and work efficiency is improved.

The invention discloses a high-altitude trepanning electric hammer auxiliary support convenient to operate. The high-altitude trepanning electric hammer auxiliary support comprises a support base; the adjusting platform is arranged on the bracket seat in a lifting manner; the connecting rod adjusting mechanism is arranged on the adjusting platform, and the connecting rod adjusting mechanism comprises two groups of rotating connecting rods and connecting connecting rods which are arranged in parallel. Through the structural arrangement, the relative position of the adjusting platform on the support base can be adjusted to adjust the overall height of the adjusting platform, then the connecting rod adjusting mechanism can be adjusted according to the angle needed by the preset hole site so that the electric hammer can be in a designated inclined posture, and finally the electric hammer can be pushed to act on the preset hole site through the progressive push rod. The drilling work of various inclined holes is completed, during drilling work, force fed back by the electric hammer can act on an operator through the progressive push rod, so that the operator with rich experience can judge whether the drilling position is opened or not and whether foreign matter is drilled or not, and compared with direct driving of a driving mechanism in the prior art, accurate judgment of constructors is more convenient.

An anvil configured to be impacted by a hammer in an impact wrench. The anvil defines a rotational axis. The anvil includes an anvil lug having a driven surface engageable with the hammer. The driven surface includes an involute profile. The involute profile is formed by a base cylinder defining a central axis. The central axis is offset from the rotational axis of the anvil.

An interface system for enabling mating and operation between a set of cordless power tools and a battery pack comprises a housing. The housing includes an interface for mating with the battery pack. The interface may include a set of rails, a set of grooves, a terminal block including a set of terminals, and a catch. The housing includes a first attachment feature configured to attach the housing to a first cordless power tool of the set of cordless power tools in a first orientation and a second attachment feature configured to attach the housing to a second cordless power tool of the set of cordless power tools in a second orientation.

A power tool adapted to impart axial impacts to a tool bit includes a housing having a motor housing portion and a handle portion extending transversely from the motor housing portion, an electric motor supported in the motor housing portion and defining a motor axis, a non-rotatable barrel extending from the motor housing portion and defining a barrel axis parallel to the motor axis, a reciprocation drive assembly coupled to the electric motor and configured to convert torque from the electric motor to reciprocating motion of a piston received within the barrel for reciprocation therein along the barrel axis, a striker received within the barrel for reciprocation in response to the reciprocation of the piston, and an anvil at least partially received within the barrel and positioned between the striker and tool bit.The anvil communicates axial impacts to the tool bit in response to reciprocation of the striker.

A handheld titanium hammer including a handle with a transverse hoop at one end, and a hammer head inserted therein. The hoop at the front-facing edge includes a notch. The hammer head includes a flange with a nub and an intermediate portion with a downward facing sloped surface and a recessed bed. A wedge having an upward facing angular surface fits into the hoop from the back end and pushes against the sloped surface of the intermediate portion for a wedging action. The wedging action also lifts the bed into a flattened wall section of the hoop capturing it therein. The nub of the flange is captured within the notch in the hoop. A fastened secures the wedge and hammer head together inside the hoop.

The embodiment of the invention relates to an electric tool. The electric tool comprises a shell; a holder for holding the tool head; the driving piece is used for outputting torque for driving the tool head to rotate; the speed reducing mechanism is used for transmitting the torque generated by the driving piece to the holding piece; the clutch mechanism is used for being in transmission connection with the speed reducing mechanism and the retainer; the torque assembly comprises an adjusting piece, an elastic piece, a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are connected to the two ends of the elastic piece, the elastic piece is located on the periphery of the box body, a speed reducing mechanism is arranged in the box body, the first fixing plate abuts against the clutch mechanism, and the second fixing plate abuts against the adjusting piece. And the preset clutch torque of the clutch mechanism is adjusted. According to the electric tool provided by the embodiment of the invention, the machine body length of the electric tool can be greatly shortened, so that the electric tool can work in a relatively narrow space; in addition, the torque adjusting range of the electric tool with the same machine body length can be increased, and the application range of the electric tool is widened.

Workability is improved while achieving downsizing. In the vibration reduction mechanism 80 of the hammer drill 10, the weight member 90 is disposed at a position overlapping the ring gear 56 in the right-left direction and the up-down direction as viewed from the front-rear direction in the inner case 72, and the weight spring 96 is disposed to be shifted downward with respect to a center of gravity G of the weight member 90 as viewed from the front-rear direction. Specifically, in the weight member 90, the spring mounting part 94 to which the weight spring 96 is mounted and the weight part 92 functioning as a weight part where the center of gravity G is located are disposed to be shifted in the up-down direction, and the weight part 92 extends upward from the spring mounting part 94. As a result, it is possible to reduce the size of the hammer drill 10 while reducing the size of the weight member 90.