276results about "Chain saws" patented technology

The application provides a handheld power tool, and relates to the technical field of electric tools.The handheld power tool comprises a housing, a handle arranged on the housing, a motor arranged in the housing, a transmission mechanism comprising a transmission component, a coaxially arranged output disc and a chain wheel, the transmission component being connected with the motor, and the output disc being matched with the transmission component, and a saw chain sleeved on the chain wheel; wherein the center line L1 of the saw chain intersects with the center line L2 of the motor at a first intersection point S1, the center line L1 of the saw chain intersects with the center line L3 of the handle at a second intersection point S2, and the first intersection point S1 and the second intersection point S2 are both arranged on the outer side of the output disc. By arranging the first intersection point S1 and the second intersection point S2 on the outer side of the output disc, the included angle between the saw chain and the motor and the handle is reasonably arranged.

A chainsaw is provided, enabling to remove sawdust conveyed inside a main body efficiently, which has a main body including: a guide bar; a saw chain wound around the guide bar and the drive sprocket; a drive sprocket disposed behind the guide bar, having a rotation shaft in a right / left direction of the main body and rotated to move the saw chain along the guide bar; and a guide wall including an arcuate first wall along the drive sprocket with a predetermined gap from the saw chain and a second wall extended rearward via a connecting portion to the first wall, and when seen from the right / left direction, a angle between: a first direction along a vertical direction of the main body; and a second direction passing through the center of the rotation shaft and an apex of the connecting portion is between 0° and 30°.

The invention relates to a method for automatically determining cleaning, maintenance and / or repair information (Info) of a motor-driven machining tool (2), wherein the machining tool (2) has residues (RS) which are optically detectable from the outside and which are caused during operation of the machining tool (2), wherein the method comprises the following steps: a) optically detecting the residues (RS); b) classifying the detected residues (RS) depending on the kind (AT) of the residues (RS); c) determining cleaning, maintenance and / or repair information (Info) on the basis of the classification; and d) outputting the determined cleaning, maintenance and / or repair information (Info).

According to examples, a power tool may include a chassis and a guide bar mounted to the chassis, the guide bar having a central axis. The power tool may also include a handle attached to the chassis above the central axis of the guide bar and a motor housed within the chassis to drive a chain around the guide bar, in which the motor is positioned beneath the central axis of the guide bar and a central axis of the motor is at a certain angle with respect to the central axis. The handle, the motor, and the battery pack mount may be positioned with respect to the chassis to cause the power tool to substantially be balanced in both lateral and longitudinal directions about a location near the trigger mechanism when the battery pack is mounted to the battery pack mount.

A chainsaw, comprising: a main-unit housing having a front portion, a rear portion, and an intermediate portion between the front portion and the rear portion; and a battery pack attached to the rear portion of the main-unit housing and supplying power to at least an electric motor, wherein when the battery pack is attached to the main-unit housing and the chainsaw is stably placed, the orthographic projection of the whole chainsaw is observed in an up-down direction, and in a front-rear direction, the ratio of the overlap length L1 between the battery pack and the main-unit housing to the length L2 of the main-unit housing is greater than or equal to 0.3.

A working machine is provided that includes a working portion and a main body portion including a main body case, an operation mechanism and a power switch. The operation mechanism includes a trigger lever, a lockout lever, and a restricting portion. The trigger lever includes a trigger lever body, and an operation portion including a projection portion. When an external force toward the main body case is applied to the trigger lever body, the projection portion of the operation portion comes into contact with the restricting portion and the trigger lever body comes into contact with the lockout lever, so that the trigger lever body is prevented from rotating relative to the main body case. When the working machine is viewed from a normal direction of a flat surface while being placed on the flat surface, a rotation center of the trigger lever body overlaps with the power switch.

The present application provides an electric working machine, and a method of assembling a drive unit for driving a motor of the electric working machine, one aspect of which relates to an electric working machine provided with a motor, a circuit substrate, a first semiconductor switch, a second semiconductor switch, a first conductive line, a second conductive line, and a solid metal member. The circuit substrate has a first circuit surface, a second circuit surface, and a through hole. The first semiconductor switch is mounted on the first circuit surface and has a first terminal. The second semiconductor switch is mounted on the second circuit surface and has a second terminal. The first conductive line is disposed on the first circuit surface and electrically connected to the first terminal. The second conductive line is disposed on the second circuit surface and electrically connected to the second terminal. The solid metal member is inserted into the through hole and electrically connected to the first conductive line and the second conductive line.

The present invention relates to a handheld driving apparatus for mowing or cutting, preferably a brush cutter (1) or a chainsaw. The driving apparatus comprises a container (11), an action unit (2) and a controller (73). The container is configured to extend from a rear side toward a front side where the action unit is provided and configured to be driven such as to mow or cut. The controller (73) is configured to in a driving step, drive the action unit by controlling a drive output to a target value (PV1), in a monitoring step (A102, A103), monitor a state or behavior of the drive output with respect to the target value (PV1) during the control in the driving step, and in an adjusting step (A104), adjust the target value (PV1) based on the state or the behavior during the monitoring. This reduces noise generation and improves energy efficiency.

To improve the heat dissipation efficiency of semiconductor switches in electric power tools. [Solution] One aspect of the present disclosure provides an electric work machine comprising a motor, a circuit board, a semiconductor switch, a metal plate, a heat dissipation member, and a male screw. The semiconductor switch is a semiconductor switch on a circuit board, having a first metal surface and a first mounting surface, and is electrically connected to a power supply and a motor. The first mounting surface is opposite to the first metal surface and faces the first circuit surface of the circuit board. The metal plate has a first plate surface bonded to the first metal surface and a second plate surface opposite to the first plate surface. The heat dissipation member is in direct or indirect contact with the second plate surface. The male screw fastens the heat dissipation member and the metal plate.

A hand-held chainsaw device (1) is described, comprising a motor housing (20) with a first side (21) and an opposing second side (22), the first side (21) having a first opening through which a first drive shaft section (33) projects for driving a sprocket (14), and an electric motor (30) for driving the sprocket (14), wherein a stator (32) of the electric motor (30) is arranged in the motor housing (20) between the first side (21) and the second side (22), and a handle (61) for holding and guiding the chainsaw device (1) with a handle axis (87) extending between the first side (21) and the second side (22), and an oil tank (17) for storing lubricating oil for a saw chain (16) driven by the sprocket (14), and an oil pump (40) for delivering lubricating oil from the oil tank (17) through an oil channel (41). to an oil delivery opening (42),wherein the motor housing (20) comprises a motor housing base body (23) and a motor housing cover (24) which closes the motor housing base body (23) on the second side (22), wherein the motor housing cover (24) has a second opening (26) through which a second drive shaft section (34) protrudes and the oil pump (40) is driven by the second drive shaft section (34).

A power tool includes a housing, a driving device, a cutting device and an oil storage device. The driving device, the cutting device and the oil storage device are all mounted in the housing. The driving device may drive the cutting device to work, and the oil storage device provides lubricating oil to the cutting device. The oil storage device includes an oil reservoir and an oil pump, the oil reservoir is connected with the oil pump through a first oil pipe, and a filtering structure is arranged between the first oil pipe and the oil reservoir to filter the lubricating oil entering the oil pump from the oil reservoir. The oil reservoir provides lubricating oil to the cutting device through the oil pump. The oil storage device of the disclosure may effectively improve a clogging problem of the oil pump and improve a duration life of the power tool.

A handheld power tool (1) is disclosed comprising an actuator mechanism (4) which comprises a first mechanism member (11) comprising a button unit (5) and a guide unit (7), and a second mechanism member (12) attached to a tool body (3). The first mechanism member (11) is pivotally attached to the second mechanism member (12) between a deactivating position and an activating position. The first and second mechanism members (11, 12) form a locking mechanism (6) configured to allow the first mechanism member (11) to pivot from the deactivating position to the activating position when the button unit (5) is in an unlocking position. The button unit (5) is slidably arranged relative to the guide unit (7) from a locking position towards the unlocking position in a first direction (d1) pointing towards the tool body (3).

The utility model discloses a brushless electric saw capable of working in a narrow space. The brushless electric saw comprises a handle, a motor and a guide plate, a side frame is arranged at one end of the handle, and a protective shell is arranged on the outer side of the side frame. The motor is arranged on one side of the side frame; the output end of the motor is connected with a rotating shaft; the electric saw is compact in overall structure and can flexibly work in a narrow and narrow space where conventional electric saws are difficult to apply, a user can easily reach and conduct cutting tasks by means of the small and flexible figure of the electric saw no matter in operation scenes such as narrow pipeline gaps and corners, the use range of the electric saw is greatly expanded, and the electric saw is suitable for popularization and application. The working efficiency is improved, and construction obstacles caused by space limitation are reduced; according to the brushless electric saw, automatic and precise lubrication is achieved through the built-in lubricating mechanism, the brushless electric saw can replenish lubricating oil for a cutting chain and a gear piece in time according to requirements in the working process, the working continuity is improved, and the working efficiency is improved.

The utility model discloses an electric chain saw which comprises a machine shell, a gear box, an oil pump, an oil tank, an oil inlet pipe, a guide plate and an oil outlet pipe. The gear box is installed in the machine shell and comprises a gear box shell, an installation table is arranged on the gear box shell and comprises a planar first installation part, and an included angle is formed between the plane where the first installation part is located and the plane where the top wall of the gear box shell is located; the oil pump is fixedly mounted on the mounting table, penetrates through the first mounting part, is at least partially inserted into the gearbox and is in linkage mounting with the gearbox; the oil tank is installed in the machine shell. The oil inlet pipe communicates with the oil tank; the guide plate is installed on the machine shell. The oil outlet pipe communicates with the oil pump and the guide plate. According to the invention, the probability of oil leakage can be reduced.

The utility model discloses a chain saw. The chainsaw includes: a housing; the motor is supported by the machine shell and comprises a motor shaft and a motor bearing arranged on the motor shaft in a sleeving mode. The chain is driven by the motor to execute cutting; the guide plate is used for supporting and guiding the chain; the distance between the motor bearing close to the guide plate side and the plane where the guide plate is located is smaller than or equal to 18 mm in the axis direction of the motor shaft.

Provided is a power tool, which belongs to the technical field of tools. The power tool includes an electric motor and a power supply device. The electric motor is configured to power the power tool. The electric motor includes a stator and a rotor that rotates relative to the stator and is at least partially disposed on the outer side of the stator. The power supply device is configured to supply electric energy to the electric motor. The diameter of the rotor is greater than or equal to 50 mm and less than or equal to 105 mm, and the ratio of the rated torque of the electric motor to the mass of the electric motor is higher than or equal to 4 N·m / kg. A relatively large armature diameter of the electric motor allows the electric motor to have a greater torque capacity, and the total mass of the electric motor is controlled to be relatively light in conjunction with the weight reduction design. With the two designs, the electric motor has a relatively high torque density and a relatively high power density so that the heavy load performance of the machine is improved and the weight of the whole machine is kept relatively light. Thus, the operation of the user is facilitated, and the electric motor has the advantages of miniaturization and a light weight.

The chainsaw includes a guide bar. The guide bar includes a recess. A communications chip or other on-board circuitry is positioned within the recess in the guide bar.

The utility model relates to the technical field of chain saw chains, and discloses a tightness-adjustable chain saw chain which comprises a gasoline saw body, a first handle and a second handle, the first handle is installed on the left side of the gasoline saw body, the second handle is installed above the gasoline saw body, an adjusting device is installed in the gasoline saw body, and the adjusting device is connected with the gasoline saw body. The adjusting device comprises a storage groove, a guide plate and connecting plates, the storage groove is formed in the inner side of the gasoline saw body, the guide plate is arranged on the inner side of the storage groove, the connecting plates are installed on the two sides of the left end of the guide plate, a plate body is installed in the middle of the left end of the guide plate, and a telescopic rod is installed on the left side of the plate body. A telescopic rod is mounted in a telescopic cylinder, and the left side of the telescopic cylinder is mounted on the right side of a fixing plate; according to the device, the problem of chain looseness can be conveniently solved, the working time for manually adjusting the chain looseness is shortened, and the maintenance efficiency of the device is improved.

A chain saw, comprising a housing, a cutting assembly, a motor and a battery pack accommodating portion; the cutting assembly is mounted on the housing and comprises a guide bar and a saw chain arranged around the guide bar, the guide bar providing support and guidance for the saw chain; the motor is mounted inside the housing and is configured to drive the saw chain to move around the guide bar; the battery pack accommodating portion is configured to accommodate a battery pack, the battery pack being configured to provide electric energy at least to the motor; the rated input power of the motor is greater than or equal to 1200 W and less than or equal to 5500 W; the ratio of the rated input power of the motor to the bare tool weight of the chain saw is greater than or equal to 778 W / Kg, wherein the bare tool weight of the chain saw is the weight of the chain saw in a state where the guide bar, the saw chain and the battery pack are not installed. The chain saw of the present application can meet both cutting performance and lightweight requirements.

The utility model provides a chain saw which solves the problem that in the prior art, the oil pumping amount of a lubricating system can not be adjusted according to actual requirements. The cutting assembly comprises a driving device and a cutting structure in driving connection with the driving device; the lubricating system comprises a liquid supply device and a pump body, and the pump body is used for pumping a lubricating medium stored in the liquid supply device into the cutting assembly; the pump quantity adjusting assembly comprises a first adjusting structure, the first adjusting structure is electrically connected with the pump body, the first adjusting structure has multiple quantity adjusting modes, and different quantity adjusting modes of the first adjusting structure correspond to different conveying quantities of the pump body.

The utility model provides a chain saw heat dissipation structure and a chain saw, the chain saw heat dissipation structure is arranged in a shell of the chain saw, the chain saw heat dissipation structure comprises an air guide assembly, the air guide assembly comprises an air guide channel, an air guide inlet and an air guide outlet, the air guide inlet and the air guide outlet are communicated with the air guide channel, the air guide inlet is arranged towards a battery pack, and the air guide outlet is arranged towards a control part; the heat dissipation motor is arranged on the air guide assembly, and the heat dissipation motor comprises a rotating shaft and first heat dissipation blades arranged on the rotating shaft, so that airflow is sucked into the air guide channel from the air guide inlet through the heat dissipation motor, and the airflow is pushed to the control part through the air guide outlet; according to the heat dissipation structure of the chain saw, the problem that in the prior art, the heat dissipation effect of a heat dissipation structure of the chain saw is poor is solved, so that the damage risk caused by overheating of the chain saw is reduced, the chain saw can still keep a good working state under the long-time and high-strength working condition, the heat dissipation performance of the chain saw is improved, and the service life of the chain saw is prolonged.

Provided are a chainsaw and a power tool. The chainsaw includes a working component including a guide plate and a chain; a body portion including a housing, where a front end of the body portion is configured for mounting the working component; an electric motor accommodated in the housing and configured to output power to drive the working component to work; a power supply device detachably connected to the housing to provide electrical energy for the chainsaw; a display device mounted to the housing, where the display device has a display interface for displaying an operating state of the chainsaw; and a control device electrically connected to at least the display device; where the control device is configured to respond to any one of multiple preset instructions to light up the display interface. According to the above technical solutions, the chainsaw capable of automatically activating the brightness of the display interface of the display device can be provided.

The invention relates to a hand-held tool (1) comprising a tool (6) and a control handle (34). The tool (1) includes a motor (7) for driving the tool (6). A longitudinal direction (50) extends from the control handle (34) towards the tool (6). The tool (6) has a tool plane (E). The tool (1) includes an air filter component (12) for filtering cooling air to cool the motor (7). The tool (1) can be placed in a storage position on a horizontal plane. The tool (1) has a base (17) which, in the storage position, faces the horizontal plane. The tool (1) has a housing top (20) opposite the base (17). The tool (1) has a side surface (21) that connects the housing top (20) and the base (17) and limits the tool (1) along the longitudinal direction (50) in a direction perpendicular to the tool plane (E).The air filter component (12) is arranged on the side surface (21) of the working tool (1) and has a filter extension (70) in the longitudinal direction (50) with a front half (71) which is located in front of a rear half (72) of the filter extension (70) with respect to the longitudinal direction (50). An imaginary tangent plane (T) extending perpendicular to the horizontal plane in the parked position is tangent to the side surface (21) in the region of the filter extension (70) only in the region of the rear half (72) of the filter extension (70) of the air filter component (12). The tangent plane (T) intersects the tool plane (E) with respect to the longitudinal direction (50) in front of the region of the filter extension (70).

The utility model discloses a saw chain suitable for being matched with a lithium electric saw, which is formed by assembling a single component, the saw chain consists of a plurality of saw teeth which are continuously hinged front and back, the base part of each saw tooth comprises a front side plane and a rear side plane which are opposite to each other, the front part of the front side plane is punched and thinned to form a front sunken area, and a chain shaft hole is punched in the front sunken area; the hole edge of the chain shaft hole is chamfered; the rear part of the rear side plane is punched and thinned to form a rear sunken area, and a cylindrical boss is arranged on the rear side plane where the rear sunken area is located and serves as a chain shaft; when the previous saw tooth is hinged with the next saw tooth, the chain shaft of the previous saw tooth is inserted into the chain shaft hole of the next saw tooth and then riveted, so that the lug boss turnup is filled into the chamfer of the chain shaft hole to form hinging; a concave part is arranged at the lower part between the chain shaft of the saw teeth and the chain shaft hole, and the saw teeth are assembled to form a complete and coherent saw chain transmission tooth structure; and compactness, high efficiency and durability improvement of the saw chain are achieved, and the saw chain is particularly suitable for the requirement of a small lithium electric saw for fine cutting.

The invention discloses a guide plate for a chain saw and the chain saw, and belongs to the field of chain saws. Comprising a first outer plate, a middle plate, a second outer plate, a mounting plate and guide wheels, the first outer plate, the middle plate and the second outer plate are sequentially stacked in the first direction, and the middle plate is located between the first outer plate and the second outer plate. The first outer plate is provided with a first surface facing the middle plate, the middle plate is provided with a second surface and a third surface which are opposite in the first direction, the second outer plate is provided with a fourth surface facing the middle plate, and at least one of the first surface, the second surface, the third surface and the fourth surface is provided with a flow guide groove. At least one of the first outer plate and the second outer plate is provided with a first oil inlet hole, and the flow guide groove is communicated with the first oil inlet hole; the mounting plate is connected to at least one of the first outer plate, the middle plate and the second outer plate in the second direction, the guide wheel is rotationally connected to the mounting plate, the flow guide groove is provided with a first oil outlet, and the first oil outlet faces the guide wheel.

The utility model discloses a handheld cutting tool. The handheld cutting tool comprises a machine shell; a motor supported by the housing; a saw chain driven by the motor to perform a cutting function; the guide plate is used for supporting and guiding the saw chain; the oil can is supported by the machine shell, a lubricating agent is stored in the oil can to lubricate the saw chain or the guide plate, and the oil can comprises a can body with an oil injection port and a can cover for sealing the oil injection port; a protruding part is formed on the kettle body and can shield at least part of the kettle cover. By the adoption of the technical scheme, the handheld cutting tool is good in stability of matching of the pot lid and the oil injection opening.

The invention discloses a guide plate and a chain saw, relates to the technical field of chain saws, and aims to solve the problems of non-uniform distribution of lubricating oil and waste of the lubricating oil. The guide plate comprises an inner plate and two outer plates. The inner plate and the outer plate define a lubricating flow channel network, and the lubricating flow channel network comprises a main oil channel, a plurality of branch oil channels communicated with the main oil channel and a head oil outlet hole; the head oil outlet hole is used for allowing lubricating oil in the main oil duct to flow to the head area of the guide plate, and the multiple branch oil ducts extend to the guide plate groove and form multiple side oil outlets. A first oil inlet and a second oil inlet which are communicated with the main oil duct are formed in the tail part of the guide plate; the first oil inlet and the second oil inlet are both communicated with the main oil duct; a first groove hole capable of being matched with the axial moving tensioning pin is formed in the tail of the guide plate, and when the tensioning pin moves forwards to the working position, a rod body of the tensioning pin abuts against and blocks the second oil inlet. The guide plate and the chain saw provided by the invention are used for ensuring uniform distribution of lubricating oil and reducing escape of the lubricating oil, so that the lubricating oil is saved and the lubricating reliability is improved.

The chain saw with the damping handle comprises a machine body and the handle, the handle is connected to the machine body, a damping assembly is connected between the machine body and the handle and comprises a first buffering piece and a second buffering piece, the machine body comprises a crankcase and a cylinder body, and the cylinder body is connected to the crankcase. First buffering pieces are connected between the two ends of the bottom of the handle and the crankcase, and second buffering pieces are connected between one side of the handle and the cylinder body. According to the chain saw, the damping assembly is arranged and connected between the machine body and the handle, vibration generated by the machine body is eliminated or reduced through the damping assembly and then transmitted to the handle, and therefore vibration of the handle is reduced, the comfort degree of a user holding the chain saw is improved, and the labor intensity of the user is reduced; and the time for a user to hold the chain saw to work is prolonged.

There is provided an operating lever mechanism including: a trigger lever to actuate an electric working device; a slide member provided to be able to slide in a direction in which the handle extends, the slide member being configured to lock the trigger lever when the slide member is not operated, and to unlock the trigger lever when the slide member is slid; and a grip lever operated by gripping the handle by one hand, the grip lever being configured not to allow the slide member to slide when the grip lever is not operated, and to allow the slide member to slide when the grip lever is operated. The slide member is slid while the handle is gripped by the one hand and the grip lever is operated, and therefore the trigger lever is unlocked.

An electric power tool is provided that is configured to prevent water such as rainwater from coming into contact with connection terminals to which a battery is electrically connected, while also suppressing accumulation of heat generated by the battery. The electric power tool includes a main body section including: a battery compartment configured to form a gap opening upward with respect to the battery in a state where the battery is inserted from above, and a cover attached to the battery compartment so as to cover the battery from above, the cover being configured to expose the gap to outside when attached to the battery compartment; and an electric work section provided at a front side of the main body section and configured to operate with power supplied from the battery.