Provided is a power tool. The power tool includes: a main housing in which a drive mechanism is disposed; and a working head connected to an end of the main housing and rotating relative to the main housing about a first axis, where the working head includes an output shaft, and the output shaft is driven by the drive mechanism to rotate about a second axis. The main housing is provided with a window portion, and the window portion is configured to display an internal structure of the power tool.
A battery pack and a state of charge (SOC) estimation method of the battery pack are provided. The method includes estimating an SOC of the battery pack based on a real-time current flowing through the battery pack, where the real-time current is estimated according to real-time parameters of the battery pack, at least part of the real-time parameters of the battery pack are capable of being acquired by querying a battery pack database with at least partially data preset. With the preceding technical solution, a battery pack can be provided which has a low cost and can accurately estimate the SOC of the battery pack without a current detection resistor.
A charging device includes a first power output module, a second power output module, a first charging interface, a second charging interface, and a controller. A first switch is coupled between the first power output module and the first charging interface. A second switch is coupled between the first power output module and the second charging interface. A third switch is coupled between the second power output module and the first charging interface. A fourth switch is coupled between the second power output module and the second charging interface. The controller is used for controlling the first switch, the second switch, the third switch and the fourth switch to be turned on or off.
An outdoor moving device includes a main body, a first energy storage device, a second energy storage device, and a connection assembly. The first energy storage device is capable of supplying power to the outdoor moving device and includes at least one first energy storage unit. The second energy storage device is capable of supplying power to the outdoor moving device and includes at least one second energy storage unit. The connection assembly is used for mounting the second energy storage device to the main body. The first energy storage device is detachably mounted to the main body, the first energy storage device is detachable from the main body to supply power to another power tool, the first energy storage unit includes a first positive electrode made of a first material, and the second energy storage unit includes a second positive electrode made of a second material.
A01D 34/64 - Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle
B60K 1/04 - Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
A riding lawn mower, including: a frame; a seat; a walking assembly and a walking motor; a cutting assembly and a driving motor configured to drive the cutting assembly; a first energy storage device and a second energy storage device configured to supply power to at least one of the walking motor or the driving motor; a driving circuit to transfer power from at least one of the energy storage devices to at least one of the motors; and a charging circuit to charge at least one of the energy storage devices. The riding lawn mower further includes a first identification terminal engageable with the second energy storage device and a second identification terminal engageable with the first energy storage device; the riding lawn mower identifies a type of the energy storage devices through the identification terminals and selectively connects them to the driving circuit and the charging circuit.
A01D 34/64 - Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle
A01D 34/66 - Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle with two or more cutters
A walk-behind self-propelled working machine, comprising: a main unit (301), comprising a walking assembly (304) and a motor (305) for driving the walking assembly; a handle device (30), comprising an operating member (31) and a holding portion (311) for a user to hold; a connecting rod assembly (32), comprising a first connecting rod (321) connected to the main unit (301); a sensing device (43a), used for sensing thrust applied to the handle device (30) to drive the walk-behind self-propelled working machine; and a triggering assembly (35), capable of applying an acting force to the sensing device (43a) when the holding portion (311) is subjected to the thrust, wherein the trigger assembly (35) is connected to the connecting rod assembly (32), and the sensing device (43a) is connected to the operating member (31). The device can reduce the labor intensity of an operator during mowing.
A01D 34/68 - Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
A01D 34/00 - Mowers; Mowing apparatus of harvesters
A battery pack includes a cell assembly. The cell assembly includes a cell assembly positive terminal, a cell assembly negative terminal, a positive lead-out piece, a negative lead-out piece, a discharge path, and a protective element. The positive lead-out piece connects the cell assembly positive terminal to a battery pack positive terminal. The negative lead-out piece connects the cell assembly negative terminal to a battery pack negative terminal. The protective element is disposed on the discharge path. When the discharge current of the discharge path is greater than or equal to a preset current, the protective element turns off. The length of one of the positive lead-out piece or the negative lead-out piece close to the protective element is greater than the length of the other one of the positive lead-out piece or the negative lead-out piece away from the protective element.
H01M 50/583 - Devices or arrangements for the interruption of current in response to current, e.g. fuses
H01M 50/296 - Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
Disclosed is an intelligent mower, comprising: a camera, which is used for collecting image data of the environment surrounding the intelligent mower; an inertial measurement unit, which is used for detecting pose data of the intelligent mower; a memory, which is at least used for storing an application program for controlling the intelligent mower to work or travel; and a processor, which is used for calling the application program to perform simultaneous localization and mapping of the intelligent mower by means of fusing the image data collected by the camera and the pose data acquired by the inertial measurement unit, and generate navigation and mowing action instructions.
Disclosed are a battery pack, an electric tool using a battery pack and a charger. The battery pack comprises: a housing having a first material; a battery cell assembly disposed inside the housing, wherein the battery cell assembly comprises multiple battery cell units, and the battery cell unit comprises a battery cell positive electrode and a battery cell negative electrode; and battery cell support members having a second material and used to support at least the battery cell assembly, wherein the battery cell support members are disposed at least at two ends of the battery cell assembly, at least a portion of the battery cell support members encapsulate the battery cell positive electrode and the battery cell negative electrode, and the first material is different from the second material.
A power device (100), which is used for connecting a garden or outdoor power execution device (15), and which comprises: a housing (11) formed with an accommodation space (113); a motor (12) at least partially arranged in the accommodation space (113); and a control assembly (13) used for controlling the motor (12), wherein the maximum output power P of the motor (12) is greater than or equal to 1500 W and less than or equal to 5500 W, and the mass M1 of the power device (100) is greater than or equal to 8 kg and less than or equal to 14.5 kg, and the ratio of the maximum output power P to the mass M1 is greater than or equal to 103.5 W/kg and less than or equal to 687.5 W/kg. The power device (100) has a high output power and a compact structure.
A lawn mower includes a blade assembly configured to perform a cutting function, a deck formed with an accommodating space for accommodating at least part of the blade assembly and a power mechanism configured to drive the blade assembly to rotate about a rotation axis. The blade assembly includes a cutting blade and a chopping device. The cutting blade is configured to be driven by the power mechanism to rotate about the rotation axis, and the cutting blade includes a cutting edge. The chopping device includes a chopping body, a plurality of chopping teeth, and a plurality of branching ports, the chopping body is configured to be driven by the power mechanism to rotate, the chopping teeth extend upward or downward from the chopping body, and one branching port is provided between two adjacent chopping teeth.
A01D 34/68 - Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
The string trimmer includes a connecting rod, a string trimmer head, and an operation part. The string trimmer head includes a trimmer line, a spool, a housing, and a streamlined protection structure. The spool is configured to wind the trimmer line and capable of rotating about a first axis. The housing has an accommodating cavity for accommodating at least part of the spool, and the housing is provided with a threading hole for the trimmer line to extend to an outer side of the housing. The protection structure includes a head, a tail and a passage through which the trimmer line penetrates, where the head is connected to the housing, the tail extends on the outer side of the housing, and the passage is configured to accommodate the trimmer line penetrating through the threading hole and expose the trimmer line out of the tail of the protection structure.
A blower includes: a housing; a fan; a motor; and a speed regulator assembly including a switch for controlling the motor operation, a control member and an actuating member both enabled to control the switch. The actuating member can move between an off state and an on state, the actuating member can move to a predefined limit position, the rotational speed of the motor corresponding to the predefined limit position is a predefined rotational speed. When the actuating member is in the off state, the motor stops running. When the actuating member is in the on state, the motor rotates. The control member has at least a first control state and a second control state. In the second control state, the motor runs at a maximum rotational speed. In the first control state, the motor runs at an intermediate speed lower than the maximum rotational speed.
Disclosed is a riding lawnmower (100). The riding lawnmower (100) comprises a seat (12) for a user to sit on; a main frame (11) extending along a first straight line (101) direction and configured to support the seat (12); a mowing unit configured to mow vegetation; a travel assembly (14) configured to enable the riding lawnmower (100) to travel; a manipulation assembly (15) provided for the user to operate so as to control the movement and power output of the riding lawnmower (100). The travel assembly (14) comprises first travel wheels (141) and second travel wheels (142), and further comprises a first drive assembly (21) and a second drive assembly (22) for driving the second travel wheels (142). The first drive assembly (21) and the second drive assembly (22) are connected to the main frame (11) via a connection member and are symmetrically arranged about a plane of symmetry parallel to the first straight line (101) direction. Further comprised is a connection plate arranged perpendicular to the first straight line (101) direction and also perpendicular to a straight line direction of the plane of symmetry. The connection plate is connected to the first drive assembly (21) and the second drive assembly (22), connects the first drive assembly (21) and the second drive assembly (22) to form an assembly. The travel assembly has high structural strength, and the riding lawnmower has high adaptability.
Provided is a back-traveling self-propelled work machine, comprising: a main machine (12), comprising a travel assembly (121) and a drive motor (122) for driving the travel assembly (121); an operation switch (112c), connected to the drive motor (122); a handle apparatus (11), connected to the main machine (12); the handle apparatus comprises: an operation member (112), comprising a grip part for a user to grip; a connecting rod (111), connected to the main machine (12); a sensing module (14), used for sensing the pushing force applied to the handle apparatus (11) to drive the back-traveling self-propelled work machine; the sensing module (14) also comprises: a pressure sensor (141a), arranged between the operation member (112) and the connecting rod (111); a pressing member (146); when the grip part is subjected to a pushing force, the pressing member (146) applies a force along a preset linear direction to the pressure sensor (141a) so as to drive the pressure sensor (141a) to deform.
A01D 34/68 - Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
16.
BATTERY PACK AND COMBINATION OF A POWER TOOL AND THE BATTERY PACK
A battery pack and a combination of an electric tool and a battery pack. The battery pack comprises: a housing; a battery cell assembly, provided in the housing; a battery cell support, at least configured to support the battery cell assembly, wherein the battery cell assembly comprises: a plurality of sheet-like cells, which are stacked and comprise packaging members configured to package the cells; and an tab, provided on at least one end of the battery cell assembly and protruding from the cell; a first sensor, configured to detect the temperature of the cell, and provided on one side of the tab close to the battery cell support; and a second sensor, configured to detect parameters related to cell leakage, and provided in the battery cell assembly.
A grass trimmer (100) and a grass trimming head (11) thereof, the grass trimmer comprising: the grass trimming head; a drive device (12); and an operating device (13). The grass trimming head comprises: a spool (112); a head shell (111) which forms an accommodation space (114); and a transmission member (113a) disposed on the spool and capable of moving freely between the head shell and the spool in the linear direction perpendicular to the direction of a rotation axis (101). A grass trimming rope (15) has an effective length extending from the accommodation space, and the grass trimming rope has a preset value within the effective length range. When the effective length of the grass trimming rope is less than the preset value, the transmission member automatically releases the head shell; and when the effective length of the grass trimming rope is greater than the preset value, the transmission member locks the head shell.
A hand-powered self-driven travelling machine (100), comprising: a main unit (11); wheels (13); a handle (12), which is connected to the main unit (11); a motor (14); a driving member (152), which matches the motor (14) and can be driven by the motor (14); a driven member (153), which matches the wheels (13) and can drive the wheels (13) to rotate; and a clutch (151). When the clutch (151) is located at a first position, the driving member (152) is allowed to transmit power to the driven member (153); when the clutch (151) is located at a second position, a power transfer path between the motor (14) and the wheels (13) is broken; the clutch (151) is rotatably mounted at the driving member (152); when the clutch (151) is rotated to the first position, the clutch (151) is in contact with the driven member (153), and when the clutch (151) is rotated to the second position, the clutch (151) is separated from the driven member (153). The clutch structure is simple and effective, and the operations of the machine are convenient.
A lawnmower (100), comprising: a blade assembly (11), configured to execute a cutting function; a chassis (12), formed with an accommodating space for accommodating at least a part of the blade assembly (11); a motor (13), configured to drive the blade assembly (11) to rotate about a rotation axis (100') as an axis; and a battery pack, configured to supply the motor (13) with a power source. The blade assembly (11) comprises a first cutting portion (111a) configured to cut grass, and a second cutting portion (112a) configured to cut grass; in a direction parallel to the rotation axis (100'), the second cutting portion (112a) is located below the first cutting portion (111a); and the battery pack comprises a battery pack casing, and a cell unit provided in the battery pack casing.
A01D 34/68 - Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
Disclosed is a snowplow (100), comprising: a first drive shaft (142a) capable of rotating about a first axis (101); a snow sweeping paddle (151), comprising a snow sweeping blade (152b) mounted on the first drive shaft (142a); a second drive shaft (143a) capable of rotating about a second axis (102); a snow throwing paddle (152) comprising a snow throwing paddle base (152a) mounted on the second drive shaft (143a) and a snow throwing blade (152b) mounted on the snow throwing paddle base (152a), the second axis (102) being perpendicular to the first axis (101); a ground wheel assembly (16) configured to support the snowplow (100) such that the snowplow (100) can move on the ground; a first electric motor (131) configured to drive the ground wheel assembly (16) to rotate; a second electric motor (132) configured to drive the snow sweeping paddle (151) to rotate about the first axis (101) and drive the snow throwing paddle (151) to rotate about the second axis (102); a first deceleration assembly (143) comprising a first type of gears (143b) realizing power transmission between the second electric motor (132) and the second drive shaft (143a); and a second deceleration assembly (142) comprising a second type of gears (142b) realizing power transmission between the second drive shaft (143a) and the first drive shaft (142a).
E01H 5/09 - Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying elements, e.g. conveying pneumatically dislodging essentially by driven elements the elements being rotary or moving along a closed circular path, e.g. rotary cutter, digging wheels
21.
GRASS CUTTING HEAD AND GRASS TRIMMER COMPRISING THE GRASS TRIMMER HEAD
Provided is a labor-saving grass trimmer that includes a grass cutting head and a driving mechanism. The grass cutting head includes a head housing, a spool, and a clutch mechanism configured to implement power transmission between the head housing and the spool. The clutch mechanism has a first state by which the head housing and the spool are operative to rotate synchronously and a second state by which the spool is operative to rotate in a first rotational direction relative to the head housing or in a second rotational direction opposite to the first rotational direction relative to the head housing. The clutch mechanism includes an elastic member configured to be in a first form in a case where the clutch mechanism is in the first state and in a second form in a case where the clutch mechanism is in the second state. The arrangement facilitates spool winding.
A trimmer head (10), comprising: a bobbin (12), configured to wind cutting rope (11); a head housing (13), configured to contain at least part of the bobbin (12); a first guiding structure (16), formed on or connected to the head housing (13) and configured to guide the cutting rope (11) through the head housing (13) during threading; and a second guiding structure (125), formed on or connected to the bobbin (12) and configured to guide the cutting rope (11) to move and wind onto the bobbin (12) during winding by means of the relative rotation generated between the bobbin (12) and the head housing (13).
A riding lawn mower, comprising: a frame; a seat disposed on the frame; a lawn mowing unit comprising a lawn mowing element and a first motor configured to drive the lawn mowing element; a traveling unit comprising traveling wheels and a second motor configured to drive the traveling wheels; and a power supply device fitted to the frame and comprising: multiple battery packs detachably fitted to the riding lawn mower, the battery packs further being configured to supply power to a handheld electric tool and provided with at least one cell assembly therein, and the cell assembly comprising multiple electrically connected cells; and a power supply management module configured to determine whether the battery packs meet a discharge condition, and to control, if the battery packs meet a discharge condition, the battery packs meeting the discharge condition to discharge, the discharge condition comprising that the total number of cell assemblies connected in parallel in the battery packs is greater than or equal to five.
Disclosed is a rideable electric mower, comprising: a seat (12) for a user to sit; a main rack (11) for carrying the seat (12); a power output assembly (13), comprising a mowing element (131) for output power to effect a mowing function and a first motor (132) for driving the mowing element (131) to output the power; a walking assembly (14) capable of driving at least the rideable electric mower to walk on the ground in a first linear direction, and a second motor (143) for driving the walking assembly (14); and a power supply device (16), comprising first battery packs (161) for supplying an energy source to the rideable electric mower, the first battery pack (161) comprising: a first battery pack housing (161b); and a cell unit (161a) arranged inside the first battery pack housing (161b), wherein the power supply device (16) is mounted to the main rack (11), at least one of the first battery packs (161) in the power supply device (16) forms an insertable connection with the main rack (11), and the cell unit (161a) is a lithium cell. The rideable electric mower has a good applicability and low costs of use.
A01D 34/64 - Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle
A01D 34/78 - Driving mechanisms for the cutters electric
25.
GRASS TRIMMING HEAD AND GRASS TRIMMER HAVING THE SAME
A grass mowing head (50) and a lawnmower (100) comprising said grass mowing head (50), the grass mowing head (50) comprising a housing assembly (51) and a spool (53); the housing assembly (51) forms a housing cavity (511) and is provided with an external wire threading hole (544) allowing a mowing line (101) to penetrate deep inside the housing cavity (511) from the outside of the housing assembly (51), and the spool (53) is at least partially arranged inside the housing cavity (511) and is able to rotate about a central axis relative to the housing assembly (51); and the spool (53) is provided with an inner wire threading hole (5351) through which the mowing line (101) penetrates or a wire clamping part for securing the mowing line (101). The present grass mowing head enables the user to be able to quickly and conveniently wind the line without disassembling the spool.
Provided is a hand-powered self-driven travelling machine, comprising: a clutch (50a) having a driving state where a motor (40) drives a wheel (30) to rotate and an unlocked state where the wheel (30) freely rotates relative to the motor (40), the clutch (50a) comprising: a movable member (52) capable of moving between a locked position where the clutch (50a) is in the driving state, and an unlocked position where the clutch (50a) is in the unlocked state; and a driving paddle (53), which transfers power with the wheel (30) by means of friction, wherein when the clutch (50a) is in the driving state, the motor (40) drives the wheel (30) to rotate in a first direction, and when the motor (40) stops rotating, the wheel (30) rotates in a second direction opposite to the first direction, and can drive, by means of a frictional force, the driving paddle (53) to move, so that the driving paddle (53) pushes the movable member (52) to move from the locked position to the unlocked position. In the hand-powered self-driven travelling machine, after the motor (40) is turned off, the wheel (30) rotates without driving a motor shaft (41) to rotate, and a user only needs a relatively small force to push or pull the hand-powered self-driven travelling machine.
F16H 3/10 - Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously- meshing gears, that can be disengaged from their shafts with one or more one-way clutches as an essential feature
A reciprocating saw (100) includes: a housing (106,108,110); a spindle shaft (150) configured to reciprocate within the housing, the spindle shaft including a plurality of first grooves (184) extending along an axis (152) of the spindle shaft; a locking bushing (170) including an internal bore (180), the locking bushing supported by the housing such that the plurality of first grooves are at least partially located within the internal bore, the locking bushing including a plurality of axially extending grooves (182) within the internal bore, each of the plurality of axially extending grooves aligned with a respective one of the plurality of first grooves; and a plurality of first ball bearings (188), each of the plurality of first ball bearings positioned at least partially within a respective one of the plurality of axially extending grooves and the aligned respective one of the plurality of first grooves.
Disclosed are a lawn mower (100, 400, 500, 900) and an operating method and a control method therefor, the lawn mower (100, 400, 500, 900) comprising a mower head (110, 210, 310, 410, 510, 610, 710, 810, 810', 810", 913, 940, 940', 950, 961), a driving device (120, 420, 520, 620) for driving the mower head (110, 210, 310, 410, 510, 610, 710, 810, 810', 810", 913, 940, 940', 950, 961) to rotate, and an operating device (130, 430, 530, 730) for a user to operate to control the driving device (120, 420, 520, 620). The mower head (110, 210, 310, 410, 510, 610, 710, 810, 810', 810", 913, 940, 940', 950, 961) comprises a line shaft (111, 211, 311, 411, 511, 611, 811, 811', 941, 941', 951) and a line holding member, wherein the line shaft (111, 211, 311, 411, 511, 611, 811, 811', 941, 941', 951) is used for winding a mower rope (101, 401, 501, 701), and the line holding member forms a line holding structure for the mower rope (101, 401, 501, 701) to pass through or bypass; the driving device (120, 420, 520, 620) comprises a motor (121, 421, 521, 621, 954, 962), the lawn mower (100, 400, 500, 900) has an automatic line loading mode, under the automatic line loading mode, the motor (121, 421, 521, 621, 954, 962) drives at least one of the line shaft (111, 211, 311, 411, 511, 611, 811, 811', 941, 941', 951) and the line holding member to enable the line shaft (111, 211, 311, 411, 511, 611, 811, 811', 941, 941', 951) and the line holding member to rotate oppositely so as to automatically wind the mower rope (101, 401, 501, 701) on the line shaft (111, 211, 311, 411, 511, 611, 811, 811', 941, 941', 951). The operating method comprises the mower rope (101, 401, 501, 701) passing through or bypassing the line holding member to be inserted into the line shaft (111, 211, 311, 411, 511, 611, 811, 811', 941, 941', 951) and starting the motor (121, 421, 521, 621, 954, 962) to enable the line shaft (111, 211, 311, 411, 511, 611, 811, 811', 941, 941', 951) and the line holding member to rotate oppositely. The control method comprises providing power for the motor (121, 421, 521, 621, 954, 962) to enable the line shaft (111, 211, 311, 411, 511, 611, 811, 811', 941, 941', 951) and the line holding member to rotate oppositely. The lawn mower (100, 400, 500, 900) has an automatic line loading mode, and enables the mower rope (101, 401, 501, 701) to automatically wind on the line shaft (111, 211, 311, 411, 511, 611, 811, 811', 941, 941', 951) under the action of the motor (121, 421, 521, 621, 954, 962).
A power tool capable of being balance powered by multiple battery packs is provided. A power tool comprising: a motor; a first battery pack; a second battery pack; a first battery receptacle for receipt of the first battery pack; a second battery receptacle for receipt of the second battery pack; a first switch device for connecting to the first battery pack and the motor; a second switch device for connecting to the second battery pack and the motor; and a controller operable to send a signal to cause the switch device to open so as to disconnect the battery pack and the motor when the voltage of the switch device is less than a control voltage.
A power tool comprises a function device (10) and a power device (20). The function device (10) is provided with a mounting portion (121) for mounting the power device (20). The power device (20) comprises a prime motor and a battery pack (23) that can be combined with a power housing (21) in a separated manner. The prime motor may be a motor (22). The power housing (21) is provided with at least an adaptation portion (211), which enables the power device (20) to be mounted on the function device (10); and a combination portion (212), used to provide a space or a structure for combining the battery pack (23). When the function device (10) and the power device (20) form a whole by means of the mounting portion (121) and the adaptation portion (211), the battery pack (23) can be separated from the power housing (21). A power device mower provided with the power tool can use multiple battery packs to provide power and is convenient to use.
Disclosed is a battery pack comprising a battery casing, a battery cell combination and more than two connection terminals capable of transmitting electric energy or signals; the battery casing comprises a plug casing wall; the battery cell combination comprises more than one battery cell unit; the battery pack has an output voltage of at least 56 V; the plug casing wall comprises a plugging structure and a terminal interface; the plugging structure has at least one plugging direction; and an included angle greater than or equal to 0 degrees and less than or equal to 45 degrees is formed between the plugging direction and the maximum projection plane or maximum size direction of the battery cell combination. The battery pack can output a voltage of greater than 30 V, and has a safe and reasonable structure.
A battery pack, a charging combination, an electric tool and a disconnection detection method. The battery pack (100) comprises: a plurality of serially connected units (111); a voltage detection module (14) for detecting voltage signals of the plurality of serially connected units; a battery pack control module (16) for receiving the voltage signals detected by the voltage detection module and calculating voltage values of the serially connected units, wherein the serially connected units comprise more than two battery cores (111a), a plurality of battery cores in one serially connected unit are connected in parallel, and the battery pack control module can judge whether battery cores which are disconnected exist in the serially connected unit. The battery pack can guarantee secure use.
A laminate flooring saw system which can be used for both rip cuts and miter cuts in one embodiment includes a fence, a base including a first locking member configured to cooperate with the fence to lock the fence along a first fence axis, a second locking member configured to cooperate with the fence to lock the fence along a second fence axis, the second fence axis perpendicular to the first fence axis, and a support arm system positioned above the base for supporting a power tool.
B23D 45/02 - Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock mounted on a carriage
A laminate flooring saw system which can be used for both rip cuts and miter cuts in one embodiment includes a base, a support arm extending above the base, a saw movable along the support arm, and a first power switch, a second power switch, and a third power switch, the first power switch and the second power switch configured such that in a first switch configuration, the saw is energized independent of the position of the third power switch and configured such that in a second switch configuration the saw is energized dependent on the position of the third power switch.
B23D 45/02 - Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade or the stock mounted on a carriage
A laminate flooring saw system which can be used for both rip cuts and miter cuts in one embodiment includes a fence, a base including a first locking member configured to cooperate with the fence to lock the fence along a first fence axis, a second locking member configured to cooperate with the fence to lock the fence along a second fence axis, the second fence axis perpendicular to the first fence axis and a support arm positioned above the base for supporting a power tool.
B27B 5/18 - Saw benches with feedable circular saw blade, e.g. arranged on a carriage
B27B 9/04 - Guiding equipment, e.g. for cutting panels
B27B 27/08 - Guide fences or stops for timber in saw mills or sawing machines; Measuring equipment thereon arranged adjustably, not limited to only one of the groups
B27G 19/02 - Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
Embodiments of a power miter saw comprises a saw base having a fence for positioning a work piece, a table rotatably connected to the saw base, a miter arm assembly for angularly positioning the table relative to the saw base, a saw blade and motor assembly pivotally connected to the table having a normally elevated rest position and being configured to lower a saw blade toward the table into position to cut a work piece, a handle connected to the saw blade and motor assembly for lowering the saw blade into cutting position, an activation switch adjacent the handle and positioned to be engaged by an operator, a proximity sensor disposed on the saw blade and motor assembly for detecting the presence of objects within a zone of detection associated with the table, and electrical circuitry connected to the proximity sensor configured to generate an electrical detection signal in response to the proximity sensor detecting the presence of an object within the zone of detection.
B23D 45/06 - Sawing machines or sawing devices with circular saw blades or with friction saw discs with a circular saw blade arranged underneath a stationary work-table
patents
