Multifunctional electric tool

Abstract

A multifunctional electric tool, comprising a housing (100) and a power mechanism (200). The housing (100) comprises a front part (110) and a holding part (120). The power mechanism (200) comprises an output assembly (210) and a motor (220). The output assembly (210) comprises a first output shaft (211) and a second output shaft (212), the first output shaft (211) being configured to mount and drive a first attachment (400), and the second output shaft (212) being configured to mount and drive a second attachment (500). The motor (220) has a motor shaft (221), the motor shaft (221) driving the first output shaft (211) and the second output shaft (212), and at least one of the first output shaft (211) and the second output shaft (212) being basically parallel to the motor shaft (221).

Description

Multi-function power tools

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 15, 2024, with application number 202410056874.2. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electric tools, for example, to a multifunctional electric tool. Background Art

[0003] Multifunctional power tools are extremely practical tools in daily life, and they are highly favored for their ability to quickly and easily change tool combinations. These tools utilize a more flexible high-frequency reciprocating oscillating cutting mechanism, and can be combined with saw blades, deflection shovels, triangular brake pads, and other tools to achieve vertical cutting, seamless cutting, grinding, shoveling, and other practical functions. However, multifunctional tools in related technologies generally lack long-distance cutting capabilities, resulting in limited functionality and inconvenience.

[0004] This section provides background information related to the present application which is not necessarily prior art. Summary of the Invention

[0005] One object of the present application is to solve or at least alleviate some or all of the above problems. To this end, the present application provides a multifunctional power tool. In order to achieve the above objectives, the present application adopts the following technical solutions:

[0006] A multifunctional electric tool comprises: a housing including a front portion and a grip portion; a power mechanism including an output assembly and a motor; the output assembly including a first output shaft and a second output shaft; the first output shaft is configured to mount and drive a first accessory, and the second output shaft is configured to mount and drive a second accessory; the motor has a motor shaft, and the motor shaft drives the first output shaft and the second output shaft; at least one of the first output shaft and the second output shaft is substantially parallel to the motor shaft.

[0007] In some embodiments, the motor shaft, the first output shaft, and the second output shaft are substantially parallel.

[0008] In some embodiments, the motor shaft, the first output shaft, and the second output shaft extend toward the same side of the housing.

[0009] In some embodiments, the motor is disposed within the front portion.

[0010] In some embodiments, the grip portion has a grip axis, and the motor shaft is substantially perpendicular to the grip axis.

[0011] In some embodiments, the first output shaft and the second output shaft are distributed on the front and rear sides of the motor shaft along the front-to-rear direction of the housing.

[0012] In some embodiments, the power mechanism further includes a first transmission assembly, and the motor shaft transmits power to the first output shaft through the first transmission assembly.

[0013] In some embodiments, the power mechanism further includes a second transmission assembly, and the motor shaft transmits power to the second output shaft through the second transmission assembly.

[0014] In some embodiments, the power mechanism further includes a transfer shaft connected to the motor shaft, and the first transmission assembly and the second transmission assembly share the transfer shaft.

[0015] In some embodiments, the adapter shaft includes an eccentric shaft segment and a concentric shaft segment, the eccentric shaft segment is eccentrically arranged relative to the motor shaft, and the concentric shaft segment is concentrically arranged with the motor shaft.

[0016] In some embodiments, the first transmission assembly is connected to the eccentric shaft segment to convert the rotation of the motor shaft into the swing of the first output shaft, and the second transmission assembly is connected to the concentric shaft segment to convert the rotation of the motor shaft into the rotation of the second output shaft.

[0017] In some embodiments, the connecting shaft further includes a connecting section connected to the motor shaft.

[0018] In some embodiments, the first output shaft is an oscillating output shaft; and / or, the second output shaft is a rotating output shaft.

[0019] In some embodiments, the second accessory is a circular saw accessory.

[0020] In some embodiments, the circular saw accessory includes a saw blade, a guard, and an accessory shaft, wherein the accessory shaft is rotatably connected to the guard, the saw blade is mounted on the accessory shaft, and an end of the accessory shaft away from the saw blade is connected to the second output shaft.

[0021] In some embodiments, the accessory shaft is rotationally connected to the shroud via an accessory bearing.

[0022] In some embodiments, the circular saw accessory further includes a base plate coupled to the guard.

[0023] A multifunctional electric tool comprises: a housing including a front portion and a grip portion; a power mechanism including an output assembly and a motor; the motor is arranged in the front portion; the output assembly includes a first output shaft and a second output shaft; the first output shaft is configured to mount and drive a first accessory, and the second output shaft is configured to mount and drive a second accessory; the motor has a motor shaft, and the motor shaft drives the first output shaft and the second output shaft.

[0024] In some embodiments, the angle between the first output shaft and the motor shaft is 3-30°.

[0025] In some embodiments, at least one of the first output shaft and the second output shaft is substantially parallel to the motor shaft.

[0026] In some embodiments, the motor shaft, the first output shaft, and the second output shaft are substantially parallel.

[0027] In some embodiments, the first output shaft is an oscillating output shaft, and the power mechanism further includes a first transmission assembly, and the motor shaft transmits power to the first output shaft through the first transmission assembly to drive the first output shaft to swing.

[0028] In some embodiments, the power mechanism further includes a transfer shaft, which includes a connecting section and an eccentric shaft section. The connecting section is connected to the motor shaft, the eccentric shaft section is eccentrically arranged relative to the motor shaft, and the first transmission assembly is connected to the eccentric shaft section.

[0029] In some embodiments, the first transmission assembly includes a shift fork bearing and a shift fork, the shift fork bearing is sleeved on the eccentric shaft segment, the shift fork is connected to the first output shaft, one end of the shift fork is provided with a U-shaped opening, and the shift fork bearing is provided in the U-shaped opening.

[0030] In some embodiments, a quick-clip mechanism is further included, which can be operated by a user to detach or install the first accessory.

[0031] In some embodiments, the second output shaft is a rotating output shaft, and the power mechanism further includes a second transmission assembly, and the motor shaft transmits power to the second output shaft through the second transmission assembly to drive the second output shaft to rotate.

[0032] A multifunctional electric tool comprises: a housing including a front portion and a grip portion; a power mechanism including an output assembly and a motor; the output assembly including a first output shaft and a second output shaft, the first output shaft being an oscillating output shaft; the first output shaft being configured to mount and drive a first accessory, and the second output shaft being configured to mount and drive a second accessory; the motor having a motor shaft, the motor shaft driving the first output shaft and the second output shaft, the transmission ratio from the motor shaft to the first output shaft being a first transmission ratio, the transmission ratio from the motor shaft to the second output shaft being a second transmission ratio, and the ratio of the first transmission ratio to the second transmission ratio being greater than or equal to 2.5 and less than or equal to 4.5.

[0033] In some embodiments, a ratio of the first gear ratio to the second gear ratio is greater than or equal to 3 and less than or equal to 4.

[0034] In some embodiments, a ratio of the output efficiency of the first output shaft to the output efficiency of the second output shaft is greater than or equal to 0.9 and less than or equal to 1.35.

[0035] In some embodiments, a ratio of the output efficiency of the first output shaft to the output efficiency of the second output shaft is greater than or equal to 1.0 and less than or equal to 1.05.

[0036] In some embodiments, the grip portion has a grip axis, and the motor shaft is substantially perpendicular to the grip axis.

[0037] In some embodiments, at least one of the first output shaft and the second output shaft is substantially parallel to the motor shaft.

[0038] In some embodiments, the width of the grip portion along the left-right direction of the housing is less than or equal to 48 cm, and / or the height of the grip portion along the up-down direction of the housing is less than or equal to 64 cm.

[0039] In some embodiments, a height of the front portion along the vertical direction of the housing is less than or equal to 110 cm.

[0040] In some embodiments, the outer diameter of the motor is greater than or equal to 32 cm and less than or equal to 48 cm.

[0041] In some embodiments, the housing further includes a rear portion, and the front portion, the grip portion, and the rear portion are sequentially arranged along the front-to-back direction.

[0042] In some embodiments, the housing includes a left housing and a right housing, which are snapped together to form a front part, a grip part and a rear part; or, the front part is detachably connected to the grip part, the grip part is detachably connected to the rear part, and the grip part includes the left housing and the right housing.

[0043] In some embodiments, a speed regulating component is further included, which is used to adjust the rotation speed of the motor shaft. The speed regulating component is arranged at the front part or the grip part.

[0044] In some embodiments, the speed regulating assembly is disposed on the rear end surface of the front portion and is located on the upper side of the grip portion; alternatively, the speed regulating assembly is disposed on the lower end surface of the grip portion.

[0045] A multifunctional electric tool comprises: a housing including a front portion and a grip portion; a power mechanism including an output assembly and a motor; the output assembly including a first output shaft and a second output shaft; the first output shaft is configured to mount and drive a first accessory, and the second output shaft is configured to mount and drive a second accessory; the motor has a motor shaft, and the motor shaft drives the first output shaft and the second output shaft; the front portion is provided with an air inlet and an air outlet; a fan and a circuit board assembly are accommodated in the front portion; when the fan rotates, the heat dissipation airflow enters the front portion through the air inlet, flows through at least the circuit board assembly, and flows out of the front portion through the air outlet.

[0046] In some embodiments, the motor is disposed in the front portion, and the heat dissipation airflow flows through the motor.

[0047] In some embodiments, the motor is located downstream of the circuit board assembly along the airflow direction.

[0048] In some embodiments, the fan is disposed on the motor shaft.

[0049] In some embodiments, the air inlet is provided on at least one side of the front portion along the left-right direction.

[0050] In some embodiments, the air outlet is provided at the upper end of the front portion.

[0051] In some embodiments, the air outlet includes a first air outlet and a second air outlet, and the first air outlet and the second air outlet are respectively arranged on the left and right sides of the upper end of the front portion.

[0052] In some embodiments, the circuit board assembly extends in a first plane, and the gripping portion has a gripping axis that intersects the first plane.

[0053] In some embodiments, the circuit board assembly extends in a first plane, and the axis of the motor shaft intersects or is parallel to the first plane.

[0054] In some embodiments, the axis of the motor shaft intersects the first plane, and the upper portion of the circuit board assembly is inclined toward the motor.

[0055] In some embodiments, the housing includes a battery pack coupling portion for installing a battery pack, which at least supplies power to the power mechanism. The battery pack can be coupled to the battery pack coupling portion along a first straight line direction, and the first straight line is parallel or perpendicular to the axis of the motor shaft or is set at a first angle.

[0056] A multifunctional electric tool comprises: a housing including a front portion and a grip portion; a power mechanism including an output assembly and a motor; the output assembly including a first output shaft and a second output shaft; the first output shaft is configured to mount and drive a first accessory, and the second output shaft is configured to mount and drive a second accessory; the motor has a motor shaft, and the motor shaft drives the first output shaft and the second output shaft; and a power vibration absorbing mechanism is disposed in the grip portion.

[0057] In some embodiments, the dynamic vibration absorbing mechanism includes at least one dynamic vibration absorber.

[0058] In some embodiments, one dynamic vibration absorber is provided, and the dynamic vibration absorber is provided in the middle position of the gripping portion; or, two dynamic vibration absorbers are provided, and the two dynamic vibration absorbers are spaced apart and distributed along the front-to-back direction of the gripping portion.

[0059] In some embodiments, the dynamic vibration absorber includes a resonance member and an elastic member, one end of the elastic member is connected to the resonance member, and the other end of the elastic member is connected to the inner wall of the grip portion.

[0060] In some embodiments, the dynamic vibration absorber is configured to vibrate in the left and right directions of the grip portion, and elastic members are provided on both the left and right sides of the resonance member.

[0061] In some embodiments, a mounting piece is provided on the inner wall of the gripping portion, and one end of the elastic member away from the resonance member is connected to the mounting piece.

[0062] In some embodiments, the mounting member is a positioning groove for the elastic member to be inserted into, or the mounting member is a positioning platform for the elastic member to be sleeved.

[0063] In some embodiments, the resonant member is a mass block, the elastic member is a spring, the mass block has a groove for the spring to be inserted into, and a boss is provided in the groove for the spring to be sleeved.

[0064] In some embodiments, the grip portion has a grip axis, and the motor shaft is substantially perpendicular to the grip axis.

[0065] In some embodiments, at least one of the first output shaft and the second output shaft is substantially parallel to the motor shaft.

[0066] A multifunctional electric tool comprises: a housing including a front portion and a grip portion; a power mechanism including an output assembly and a motor; the output assembly including a first output shaft and a second output shaft; the first output shaft is configured to install and drive a first accessory, and the second output shaft is configured to install and drive a second accessory; the motor has a motor shaft, and the motor shaft drives the first output shaft and the second output shaft; a detection member and a target member, the detection member is arranged on the housing, and the target member is arranged on the second accessory; the detection member detects the position of the target member and controls the operation of the motor using a control mode corresponding to the second accessory after the second accessory is installed on the second output shaft.

[0067] In some embodiments, the detecting member is a magnetic sensor and the target member is a magnetic member.

[0068] In some embodiments, the detecting element is a Hall element and the target element is a magnet.

[0069] In some embodiments, the detection member is disposed at the front.

[0070] In some embodiments, the second accessory has a mounting portion, which extends into the front portion when the second accessory is mounted to the second output shaft, and the target component is disposed on the mounting portion.

[0071] In some embodiments, a through hole and a protective structure are provided on the housing. The protective structure blocks the through hole when the second accessory is not installed, and the protective structure is away from the through hole when the second accessory is installed to allow the installation portion to be inserted.

[0072] In some embodiments, the protective structure includes a protective cover and an elastic reset member. The elastic reset member is arranged between the protective cover and the housing. The protective cover blocks the through hole when the second accessory is not installed. When the mounting part is inserted into the through hole, the protective cover is pushed to compress the elastic reset member.

[0073] In some embodiments, a speed regulation component is also included, which is used to adjust the speed of the motor shaft. The protective structure also includes an anti-locking member, which is connected to the protective cover. When the mounting portion is inserted into the through hole, it pushes the protective cover to move to drive the anti-locking member to limit the speed regulation function of the speed regulation component.

[0074] In some embodiments, the second accessory is a circular saw accessory, and the detection component controls the motor to maintain a constant speed corresponding to the second accessory after the second accessory is mounted on the second output shaft.

[0075] In some embodiments, a speed regulating assembly is further included, which is used to adjust the speed of the motor shaft. The second accessory is a multi-functional tool operating head, and the detection component controls the speed regulating assembly to be adjustable after the second accessory is installed on the second output shaft.

[0076] In some embodiments, a second mounting hole is provided on the casing at a position corresponding to the second output shaft, and a dust plug is removably provided at the second mounting hole. The dust plug blocks the second mounting hole when the second accessory is not installed, and detaches from the second mounting hole but does not detach from the casing when the second accessory is installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] FIG1 is a structural schematic diagram 1 of a multifunctional electric tool provided by the present application;

[0078] FIG2 is a second structural diagram of the multifunctional electric tool provided by the present application;

[0079] FIG3 is a cross-sectional view of the multifunctional power tool provided by the present application;

[0080] FIG4 is a partial structural front view of the power mechanism provided by the present application;

[0081] FIG5 is a front view of the multifunctional power tool provided by the present application after being assembled with the first accessory;

[0082] FIG6 is a bottom view of the multifunctional power tool provided by the present application after being assembled with the first accessory;

[0083] FIG7 is a schematic structural diagram of the multifunctional power tool provided by the present application after being assembled with the first accessory;

[0084] FIG8 is a front view of the multifunctional power tool provided by the present application after being assembled with the second accessory;

[0085] FIG9 is a schematic structural diagram of the multifunctional power tool provided by the present application after being assembled with a second accessory;

[0086] FIG10 is a schematic diagram of a partial structure of the power mechanism provided by the present application;

[0087] FIG11 is a partially exploded front view of the power mechanism provided by the present application;

[0088] FIG12 is a partial structural cross-sectional view of the power mechanism provided by the present application;

[0089] FIG13 is a second cross-sectional view of a portion of the structure of the power mechanism provided by the present application;

[0090] FIG14 is a schematic diagram of the exploded structure of the gearbox provided in this application;

[0091] FIG15 is a structural schematic diagram of a circular saw accessory provided by the present application;

[0092] FIG16 is an enlarged view of point A in FIG15 ;

[0093] FIG17 is a second structural diagram of the circular saw accessory provided by the present application;

[0094] FIG18 is a third structural diagram of the circular saw accessory provided by the present application;

[0095] FIG19 is a partial structural cross-sectional view of the multifunctional power tool provided by the present application;

[0096] FIG20 is an enlarged view of point B in FIG19;

[0097] FIG21 is a partial structural side view of the multifunctional power tool provided by the present application;

[0098] FIG22 is a second side view of a partial structure of the multifunctional power tool provided by the present application;

[0099] FIG23 is a partial structural cross-sectional view of the multifunctional power tool provided by the present application;

[0100] FIG24 is a partial structural exploded schematic diagram of the multifunctional power tool provided by the present application;

[0101] FIG25 is a schematic diagram of an exploded view of the dynamic vibration absorber provided in the present application.

[0102] In the figure: 100, housing; 101, first mounting hole; 102, second mounting hole; 110, front; 111, air inlet; 112, air outlet; 120, grip; 121, grip axis; 130, rear; 140, battery pack joint; 150, dust plug; 160, mounting member; 200, power mechanism; 210, output assembly; 211, first output shaft; 2111, shaft body; 2112, Locking rod; 212, second output shaft; 220, motor; 221, motor shaft; 230, first transmission assembly; 231, shift fork bearing; 232, shift fork; 233, first bearing assembly; 240, second transmission assembly; 241, first gear; 242, second gear; 243, second bearing assembly; 250, adapter shaft; 251, connecting section; 252, eccentric shaft section; 253, concentric shaft section; 260, adapter bearing assembly; 270, gearbox; 271, housing; 272, housing cover; 280, quick-clamp mechanism; 300, battery pack; 400, first accessory; 500, second accessory; 510, saw blade; 520, guard; 521. Limiting platform; 5211. Locking groove; 522. Avoidance hole; 530. Accessory shaft; 531. Limiting protrusion; 540. Accessory bearing; 550. Base plate; 560. Bracket; 561. Elastic locking protrusion; 570. Mounting portion; 610. Detection part; 620. Target part; 630. Protection structure; 631. Protection cover; 632. Elastic reset part; 633. Anti-locking part; 700. Speed ​​regulating assembly; 810. Fan; 820. Circuit board assembly; 821. First plane; 900. Dynamic vibration absorbing mechanism; 910. Dynamic vibration absorber; 911. Resonance part; 9111. Groove; 9112. Boss; 912. Elastic part. DETAILED DESCRIPTION

[0103] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the foregoing drawings.

[0104] In this application, the terms "comprises," "includes," "has," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0105] In this application, the term "and / or" describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this application generally indicates that the related objects are in an "and / or" relationship.

[0106] In this application, the terms "connect," "combine," "couple," and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without an intermediary, and an indirect connection refers to two parts or components being connected to at least one intermediary, with the two parts or components being connected via the intermediary. Furthermore, "connect" and "couple" are not limited to physical or mechanical connections or couplings and may include electrical connections or couplings.

[0107] In this application, it will be understood by those skilled in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. associated with a specific value. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0108] In this application, it will be understood by those skilled in the art that the function performed by an assembly can be performed by one assembly, multiple assemblies, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one assembly, or a combination of multiple parts.

[0109] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to the other element "upper" or "lower", but also be indirectly connected to the other element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, below can include directly below, lower left, lower right, lower front and lower back, etc.

[0110] In this application, the terms "controller," "processor," "central processing unit," "CPU," and "MCU" are used interchangeably. Where a unit "controller," "processor," "central processing unit," "CPU," or "MCU" is used to perform a particular function, unless otherwise specified, the function may be performed by a single unit or multiple units.

[0111] In this application, the terms "device", "module" or "unit" can be implemented in the form of hardware or software to achieve specific functions.

[0112] In this application, the terms "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0113] Referring to Figures 1 to 9, the present application provides a multifunctional power tool, including a housing 100 and a power mechanism 200, the housing 100 includes a front portion 110 and a grip portion 120, the power mechanism 200 includes an output assembly 210 and a motor 220; the output assembly 210 includes a first output shaft 211 and a second output shaft 212, the motor 220 has a motor shaft 221, and the motor shaft 221 drives the first output shaft 211 and the second output shaft 212.

[0114] The grip portion 120 has a grip axis 121, which is defined as extending in the front-to-back direction. The motor shaft 221 is substantially perpendicular to the grip axis 121, and is defined as extending in the up-down direction. The left-right direction is perpendicular to both the grip axis 121 and the axis of the motor shaft 221.

[0115] The front portion 110 is disposed at the front end of the grip portion 120. The housing 100 further includes a rear portion 130 disposed at the rear end of the grip portion 120, that is, the front portion 110, the grip portion 120 and the rear portion 130 are sequentially disposed along the front-to-back direction.

[0116] In some embodiments, the housing 100 includes a left housing and a right housing, which are fastened together to form a front portion 110, a grip portion 120, and a rear portion 130. In some embodiments, the front portion 110 and the grip portion 120 are detachably connected, and the grip portion 120 and the rear portion 130 are detachably connected, and the grip portion 120 includes a left housing and a right housing.

[0117] In FIG5 , H1 represents the height of the grip portion 120 along the vertical direction of the housing 100. The height of the grip portion 120 along the vertical direction of the housing 100 is less than or equal to 64 cm. In some embodiments, the height of the grip portion 120 along the vertical direction of the housing 100 is less than or equal to 58 cm. In some embodiments, the height of the grip portion 120 along the vertical direction of the housing 100 is equal to 53 cm.

[0118] In FIG6 , D1 represents the width of the grip portion 120 along the left-right direction of the housing 100. The width of the grip portion 120 along the left-right direction of the housing 100 is less than or equal to 48 cm. In some embodiments, the width of the grip portion 120 along the left-right direction of the housing 100 is less than or equal to 45 cm. In some embodiments, the width of the grip portion 120 along the left-right direction of the housing 100 is equal to 40 cm.

[0119] In FIG5 , L represents the length of the whole machine, which is less than or equal to 400 cm. In some embodiments, the length of the whole machine is equal to 380 cm.

[0120] In FIG5 , H2 represents the height of the front portion 110 along the vertical direction of the housing 100. The height of the front portion 110 along the vertical direction of the housing 100 is less than or equal to 110 cm. In some embodiments, the height of the front portion 110 along the vertical direction of the housing 100 is less than or equal to 100 cm. In some embodiments, the height of the front portion 110 along the vertical direction of the housing 100 is equal to 92 cm.

[0121] In some embodiments, the motor 220 is located within the front portion 110, reducing the size of the grip 120 and facilitating gripping. Both the first and second output shafts 211, 212 are located within the front portion 110, close to the motor 220, resulting in a compact structure and improved transmission. The first and second output shafts 211, 212 are located on either side of the motor shaft 221 along the front-to-back direction of the housing 100, optimizing the layout and ensuring smooth transmission.

[0122] The outer diameter of the motor 220 is greater than or equal to 32 cm and less than or equal to 48 cm. In some embodiments, the outer diameter of the motor 220 is greater than or equal to 36 cm and less than or equal to 44 cm. In some embodiments, the outer diameter of the motor 220 is equal to 40 cm.

[0123] The housing 100 also includes a battery pack connector 140 for mounting a battery pack 300. The battery pack 300 provides power to at least the power mechanism 200. The battery pack connector 140 is located at the rear portion 130 to provide overall balance. The battery pack 300 can be coupled to the battery pack connector 140 along a first straight line, with the first straight line being parallel, perpendicular, or arranged at a first angle to the axis of the motor shaft 221. In other words, the battery pack 300 can be coupled to the battery pack connector 140 along any direction, front to back, left to right, up to down, or any other direction, of the housing 100. The first angle is greater than 0 degrees and less than 90 degrees.

[0124] At least one of the first output shaft 211 and the second output shaft 212 is substantially parallel to the motor shaft 221 , which makes the structure compact, saves space, reduces the volume of the entire machine, optimizes the center of gravity of the entire machine, and improves the user experience.

[0125] In some embodiments, the motor shaft 221, the first output shaft 211, and the second output shaft 212 are substantially parallel. This allows the first and second output shafts 211, 212 to share the motor shaft 221, ensuring a compact structure. In some embodiments, at least one of the first and second output shafts 211, 212 is arranged at an angle to the motor shaft 221. The angle between the first output shaft 211 and the motor shaft 221 can be between 3° and 30° to accommodate installation space. If space permits, the first accessory 400 and the second accessory 500 can be installed simultaneously.

[0126] In some embodiments, the motor shaft 221, the first output shaft 211, and the second output shaft 212 extend toward the same side of the housing 100. In some embodiments, one of the first output shaft 211 and the second output shaft 212 extends toward the same side of the housing 100 as the motor shaft 221, and the other extends in an opposite direction to the motor shaft 221.

[0127] A1 represents the axis of the motor shaft 221 , A2 represents the axis of the first output shaft 211 , and A3 represents the axis of the second output shaft 212 . At least two of the axes of the motor shaft 221 , the first output shaft 211 , and the second output shaft 212 are in the same plane.

[0128] In some embodiments, a first mounting hole 101 is provided on the housing 100 at a position corresponding to the first output shaft 211, and the first output shaft 211 extends out of the first mounting hole 101, or the first output shaft 211 is located within the first mounting hole 101. A second mounting hole 102 is provided on the housing 100 at a position corresponding to the second output shaft 212, and the second output shaft 212 extends out of the second mounting hole 102, or the second output shaft 212 is located within the second mounting hole 102. Specific arrangements can be made based on the type of accessory being installed.

[0129] Referring to Figures 2, 3 and 7, the first output shaft 211 extends out of the first mounting hole 101, and the second output shaft 212 is located in the second mounting hole 102. A dust plug 150 is detachably provided at the second mounting hole 102. When the first accessory 400 is installed on the first output shaft 211, the dust plug 150 blocks the second mounting hole 102 to prevent dust. When the second accessory 500 is installed on the second mounting hole 102, the dust plug 150 is detached from the second mounting hole 102 but does not detach from the housing 100 to prevent loss. Specifically, the dust plug 150 and the housing 100 can be connected by a connecting rope. In some embodiments, the dust plug 150 can be made of rubber and have a texture that fits tightly with the edge of the second mounting hole 102.

[0130] The first output shaft 211 is configured to install and drive the first accessory 400, and the second output shaft 212 is configured to install and drive the second accessory 500; by replacing the first accessory 400 or the second accessory 500, various functions such as long and short distance cutting, polishing, and grinding can be achieved.

[0131] The first output shaft 211 and the second output shaft 212 are not shafts of accessories, but original structures of the multifunctional power tool in the housing 100 that cannot be disassembled by the user.

[0132] The first accessory 400 may be a multi-function tool head, for example, a fan-shaped saw blade, an oscillating shovel, or a triangular brake pad. The fan-shaped saw blade has a diameter of 100 cm. The second accessory 500 may be a circular saw accessory. When the multi-function tool head is attached to the first output shaft 211, the multi-function power tool is in the multi-function tool mode; when the circular saw accessory is attached to the second output shaft 212, the multi-function power tool is in the circular saw mode.

[0133] In some embodiments, when the first accessory 400 is installed to the first output shaft 211, the second accessory 500 is not installed to the second output shaft 212. That is, either the first accessory 400 or the second accessory 500 is in an installed state to ensure the safety of the tool and the accuracy of the operation.

[0134] The first output shaft 211 is an oscillating output shaft; and / or the second output shaft 212 is a rotating output shaft. In some embodiments, the first output shaft 211 is an oscillating output shaft, the first accessory 400 may be a multi-function tool head, the second output shaft 212 is a rotating output shaft, and the second accessory 500 may be a circular saw accessory.

[0135] 10 to 14 , the power mechanism 200 further includes a first transmission assembly 230, through which the motor shaft 221 transmits power to the first output shaft 211. When the first output shaft 211 is an oscillating output shaft, the motor shaft 221 transmits power to the first output shaft 211 through the first transmission assembly 230, thereby driving the first output shaft 211 to oscillate.

[0136] The motor shaft 221 can directly drive the second output shaft 212, or the power mechanism 200 can further include a second transmission assembly 240, and the motor shaft 221 transmits power to the second output shaft 212 through the second transmission assembly 240. When the second output shaft 212 is a rotating output shaft, the motor shaft 221 transmits power to the second output shaft 212 through the second transmission assembly 240 to drive the second output shaft 212 to rotate.

[0137] The power mechanism 200 further includes a transfer shaft 250, which is connected to the motor shaft 221. The first transmission assembly 230 and the second transmission assembly 240 share the transfer shaft 250, thereby reducing the number of components and ensuring a compact structure.

[0138] Taking the first output shaft 211 as an oscillating output shaft and the second output shaft 212 as a rotating output shaft as an example, the adapter shaft 250 includes a connecting section 251, an eccentric shaft section 252, and a concentric shaft section 253. The connecting section 251 is connected to the motor shaft 221, the eccentric shaft section 252 is eccentric relative to the motor shaft 221, and the concentric shaft section 253 is concentric with the motor shaft 221. The structure of the adapter shaft 250 facilitates outputting multiple transmission states. The eccentric shaft section 252 is used for outputting the swing state, and the concentric shaft section 253 is used for outputting the rotation state, to accommodate the first output shaft 211 and the second output shaft 212.

[0139] The first transmission assembly 230 is connected to the eccentric shaft segment 252 to convert the rotation of the motor shaft 221 into the swing of the first output shaft 211 , and the second transmission assembly 240 is connected to the concentric shaft segment 253 to convert the rotation of the motor shaft 221 into the rotation of the second output shaft 212 .

[0140] Specifically, the first transmission assembly 230 includes a shift fork bearing 231 and a shift fork 232. The shift fork bearing 231 is sleeved on the eccentric shaft segment 252. The shift fork 232 is connected to the first output shaft 211. One end of the shift fork 232 is provided with a U-shaped opening, and the shift fork bearing 231 is disposed within the U-shaped opening. The shift fork 232 and the first output shaft 211 can be fixedly connected or have an interference fit.

[0141] When the motor shaft 221 rotates, it causes the eccentric shaft segment 252 to move eccentrically relative to the axis of the motor shaft 221. This in turn causes the shift fork bearing 231 to push the shift fork 232 to swing about the axis of the first output shaft 211, thereby causing the shift fork 232 to swing the first output shaft 211. With reference to Figure 7 , the swinging of the first output shaft 211 causes the first accessory 400 located on the first output shaft 211 to swing.

[0142] The power mechanism 200 also includes an adapter bearing assembly 260, which is mounted on the adapter shaft 250 and provides support for the adapter shaft 250. The adapter bearing assembly 260 may include at least two adapter bearings, which are spaced apart on the adapter shaft 250, with the shift fork bearing 231 located between the two adapter bearings. The power mechanism 200 also includes a counterweight, which is mounted on the adapter shaft 250 and located between the adapter bearing and the shift fork bearing 231. The power mechanism 200 also includes a gasket, which is mounted on the adapter shaft 250 and located between the shift fork bearing 231 and the counterweight.

[0143] The first transmission assembly 230 also includes a first bearing assembly 233, which is sleeved on the first output shaft 211 to support the first output shaft 211. The first bearing assembly 233 may include two first bearings, which are spaced apart on the first output shaft 211, and the shift fork 232 is located between the two first bearings.

[0144] The second transmission assembly 240 includes a first gear 241 and a second gear 242. The first gear 241 is disposed on a concentric shaft segment 253, and the second gear 242 is disposed on the second output shaft 212. The first gear 241 and the second gear 242 mesh with each other. When the motor shaft 221 rotates, the concentric shaft segment 253 rotates about the axis of the motor shaft 221, which in turn causes the first gear 241 to rotate the second gear 242, thereby rotating the second output shaft 212. With reference to Figure 9, the rotation of the second output shaft 212 causes at least some components of the second accessory 500 connected to the second output shaft 212 to rotate. The first gear 241 is located between the two transfer bearings and is located near the shift fork bearing 231.

[0145] The second transmission assembly 240 further includes a second bearing assembly 243, which is sleeved on the second output shaft 212 to support the second output shaft 212. The second bearing assembly 243 may include two second bearings, which are spaced apart on the second output shaft 212, with the second gear 242 located between the two second bearings.

[0146] The multifunctional power tool also includes a gearbox 270, which supports and protects the first transmission assembly 230 and the second transmission assembly 240. Specifically, the motor shaft 221, the first output shaft 211, and the second output shaft 212 are all disposed within the gearbox 270. The adapter shaft 250, the shift fork 232, the first gear 241, the second gear 242, the adapter bearing assembly 260, the counterweight, the gasket, the first bearing assembly 233, and the second bearing assembly 243 are all disposed within the gearbox 270. The gearbox 270 supports the adapter bearing assembly 260, the first bearing assembly 233, and the second bearing assembly 243.

[0147] The gearbox 270 is a split structure for easy assembly. The gearbox 270 includes a detachable box body 271 and a box cover 272. A receiving space is formed between the box body 271 and the box cover 272. The box body 271 and the box cover 272 can be connected by screws.

[0148] The multifunctional power tool also includes a quick-clamp mechanism 280. The first output shaft 211 includes a shaft body 2111 and a locking rod 2112. The shaft body 2111 is hollow, and the locking rod 2112 extends through the shaft body 2111. One end of the locking rod 2112 is connected to the quick-clamp mechanism 280, while the other end of the locking rod 2112 is capable of clamping the first accessory 400 with the shaft body 2111. The quick-clamp mechanism 280 is used to lock the shaft body 2111 and the locking rod 2112. In the loosened state, the locking rod 2112 can move axially relative to the shaft body 2111, facilitating removal of the first accessory 400. In the locked state, the quick-clamp mechanism 280 locks the shaft body 2111 and the locking rod 2112 to secure the first accessory 400. When replacing the first accessory 400, the shaft body 2111 does not need to be removed; the locking rod 2112 can be loosened by simply operating the quick-clamp mechanism 280, enabling quick replacement.

[0149] The shift fork 232 and the first bearing assembly 233 are both connected to the shaft body 2111 .

[0150] Referring to Figures 8, 9, 15, and 20, the second accessory 500 is a circular saw accessory. The circular saw accessory includes a saw blade 510, a guard 520, and an accessory shaft 530. The accessory shaft 530 is rotatably connected to the guard 520. The saw blade 510 is mounted on the accessory shaft 530, and the end of the accessory shaft 530 away from the saw blade 510 is connected to the second output shaft 212. When the second accessory 500 is installed, the accessory shaft 530 is connected to the second output shaft 212. The second output shaft 212 can transmit power to the accessory shaft 530 to drive the saw blade 510 to rotate.

[0151] The diameter of the saw blade 510 is greater than or equal to 85 cm and less than or equal to 105 cm.

[0152] The accessory shaft 530 is rotatably connected to the shield 520 via the accessory bearing 540 to ensure cutting accuracy and reduce processing difficulty.

[0153] The circular saw accessory further includes a base plate 550 connected to the guard 520. In some embodiments, the base plate 550 and the guard 520 are fixedly connected, and depth and angle adjustments are not possible. After the circular saw accessory is mounted on the second output shaft 212, the base plate 550 is located on the left or right side of the housing 100.

[0154] A limiting protrusion 531 is provided on the outer circumferential surface of the accessory shaft 530, a mounting groove is provided at the end of the first output shaft 211, and a limiting groove is provided on the inner wall of the mounting groove. When installing the circular saw accessory, the accessory shaft 530 is inserted into the mounting groove so that the limiting protrusion 531 is inserted into the limiting groove to achieve positioning, so that the accessory shaft 530 and the second output shaft 212 are fixed along the circumferential direction, and the second output shaft 212 can transmit torque to the accessory shaft 530.

[0155] The circular saw accessory is connected to the housing 100 of the multifunctional power tool via a snap-fit ​​structure, which is convenient for installation and disassembly. When in use, the circular saw accessory is fixed to the housing 100 to prevent the circular saw accessory from being separated.

[0156] The snap-fit ​​structure includes an elastic latching protrusion 561 and a locking groove 5211. One of the elastic latching protrusion 561 and the locking groove 5211 is disposed on the housing 100, and the other is disposed on the shield 520. When the accessory shaft 530 is connected to the second output shaft 212, the elastic latching protrusion 561 is inserted into the locking groove 5211 and elastically locked. In some embodiments, the snap-fit ​​structure includes a bracket 560 disposed on the housing 100, the elastic latching protrusion 561 is disposed on the bracket 560, and a limiting platform 521 is disposed on the shield 520 around the accessory shaft 530. The locking groove 5211 is disposed on the outer circumference of the limiting platform 521.

[0157] An escape hole 522 is provided on the shield 520 at a position corresponding to the first output shaft 211 . When the circular saw accessory is installed, the portion of the first output shaft 211 extending outside the housing 100 is inserted into the escape hole 522 .

[0158] The multifunctional power tool also includes a detection part 610 and a target part 620. The detection part 610 is arranged on the housing 100, and the target part 620 is arranged on the second accessory 500. The detection part 610 detects the position of the target part 620 and controls the operation of the motor 220 using a control mode corresponding to the second accessory 500 after the second accessory 500 is installed on the second output shaft 212.

[0159] It will be appreciated that the multifunctional power tool includes a controller capable of receiving signals from the detection member 610 to determine whether the second accessory 500 is installed. The target member 620 is provided on the second accessory 500. When the detection member 610 detects that the target member 620 is in the installed position, it is determined that the second accessory 500 is installed on the second output shaft 212, and the controller can switch the control mode. The control mode corresponding to the second accessory 500 can be set according to the specific type of the second accessory 500.

[0160] In some embodiments, the second accessory 500 is a circular saw accessory. After the second accessory 500 is mounted to the second output shaft 212, the detection member 610 controls the motor 220 to maintain a constant speed corresponding to the second accessory 500. When the circular saw accessory is not mounted to the second output shaft 212, the entire machine has a speed regulation function, and the speed of the motor shaft 221 is adjustable. When the circular saw accessory is mounted to the second output shaft 212, the speed regulation function is disabled, and the motor 220 operates at a constant speed, specifically, the maximum speed of the motor 220.

[0161] In some embodiments, the detection element 610 is a magnetic sensor, and the target element 620 is a magnetic element. Alternatively, the detection element 610 is a Hall effect element, and the target element 620 is a magnet. When the first accessory 400 is used, the multifunctional power tool is in the multifunctional tool mode, and the machine has a speed control function. When the circular saw accessory is inserted, the Hall effect element recognizes the magnetic field of the magnet, and the entire machine speed is locked to the maximum speed, and the speed control function is disabled.

[0162] In some embodiments, the detection member 610 is disposed on the front portion 110 . In some embodiments, the detection member 610 is disposed on the grip portion 120 .

[0163] The second accessory 500 has a mounting portion 570 that extends into the front portion 110 when the second accessory 500 is mounted on the second output shaft 212. The target member 620 is disposed on the mounting portion 570. The target member 620 extends into the front portion 110 along with the mounting portion 570, making it easier for the detection member 610 to detect the target member 620.

[0164] The housing 100 is provided with a through hole and a protective structure 630. The protective structure 630 blocks the through hole when the second accessory 500 is not installed to prevent dust from entering. When the second accessory 500 is installed, the protective structure 630 is away from the through hole to allow the installation portion 570 to be inserted.

[0165] Referring to Figures 7, 19 and 20, the protective structure 630 includes a protective cover 631 and an elastic reset member 632. The elastic reset member 632 is arranged between the protective cover 631 and the housing 100. The protective cover 631 blocks the through hole when the second accessory 500 is not installed. When the mounting portion 570 is inserted into the through hole, it pushes the protective cover 631 to compress the elastic reset member 632.

[0166] The protective structure 630 also includes a counter-locking member 633 connected to the protective cover 631. When the mounting portion 570 is inserted into the through-hole, the counter-locking member 633 pushes the protective cover 631 to move, thereby driving the counter-locking member 633 to limit the speed regulation function of the speed regulation assembly 700. The speed regulation assembly 700 is used to adjust the speed of the motor shaft 221. When the speed regulation function of the speed regulation assembly 700 is limited, the speed of the motor 220 is constant. The counter-locking member 633 limits the speed regulation function of the speed regulation assembly 700. The position of the counter-locking member 633 can limit the speed regulation function of the speed regulation assembly 700.

[0167] In some embodiments, the second accessory 500 is a multi-function tool head. The detection member 610 can control the speed adjustment assembly 700 after the second accessory 500 is mounted on the second output shaft 212. When the multi-function tool head is mounted on the second output shaft 212, the entire tool has a speed adjustment function, and the speed of the motor 220 can be adjusted according to the type of multi-function tool head.

[0168] A second mounting hole 102 is provided on the housing 100 at a position corresponding to the second output shaft 212. A dust plug 150 is removably provided at the second mounting hole 102. The dust plug 150 blocks the second mounting hole 102 when the second accessory 500 is not installed. When the second accessory 500 is installed, the dust plug 150 is detached from the second mounting hole 102 but does not detach from the housing 100 to prevent loss.

[0169] The transmission ratio from the motor shaft 221 to the first output shaft 211 is a first transmission ratio, and the transmission ratio from the motor shaft 221 to the second output shaft 212 is a second transmission ratio. The ratio of the first transmission ratio to the second transmission ratio is greater than or equal to 2.5 and less than or equal to 4.5. In some embodiments, the ratio of the first transmission ratio to the second transmission ratio is greater than or equal to 3 and less than or equal to 4.

[0170] The ratio of the output efficiency of the first output shaft 211 to the output efficiency of the second output shaft 212 is greater than or equal to 0.9 and less than or equal to 1.35. In some embodiments, the ratio of the output efficiency of the first output shaft 211 to the output efficiency of the second output shaft 212 is greater than or equal to 1.0 and less than or equal to 1.05. The output efficiency of the first output shaft 211 and the second output shaft 212 can be the transmission efficiency from the motor shaft 220 to the first output shaft 211 and the second output shaft 212, respectively.

[0171] The multifunctional power tool further includes a speed regulating assembly 700, which is used to adjust the speed of the motor shaft 221. The speed regulating assembly 700 is disposed on the front portion 110 or the grip portion 120. When the operator grips the grip portion 120, it is convenient to operate the speed regulating assembly 700.

[0172] In some embodiments, the speed regulating assembly 700 is disposed on the rear end surface of the front portion 110 and is located on the upper side of the grip portion 120. In some embodiments, the speed regulating assembly 700 is disposed on the lower end surface of the grip portion 120.

[0173] In some embodiments, the speed regulating assembly 700 includes a speed regulating plate, on which a speed regulating operating member is provided, and the speed can be adjusted by pressing, rotating, or toggling the speed regulating operating member. In some embodiments, the speed regulating assembly 700 includes a speed regulating dial, and the speed can be adjusted by rotating the speed regulating dial.

[0174] The motor 220 has at least two speed ranges, including a fast speed range and a slow speed range. In the fast speed range, the motor 220 has a speed range of 16,000 r / min or greater and 22,000 r / min or less. In the slow speed range, the motor 220 has a speed range of 5,000 r / min or greater and 6,000 r / min or less.

[0175] 1 to 3 , 10 , 21 , and 22 , front portion 110 is provided with an air inlet 111 and an air outlet 112 . The multifunctional power tool further includes a fan 810 and a circuit board assembly 820 , which are housed within front portion 110 . When fan 810 rotates, heat dissipation airflow enters front portion 110 through air inlet 111 , flows through at least circuit board assembly 820 , and exits front portion 110 through air outlet 112 . By locating both air inlet 111 and air outlet 112 on front portion 110 , the airflow path is shortened, improving heat dissipation efficiency.

[0176] Motor 220 is positioned within front portion 110, allowing cooling airflow to flow through motor 220. This airflow dissipates heat not only from PCB assembly 820 but also from motor 220, enhancing cooling efficiency. Motor 220 is positioned downstream of PCB assembly 820 along the airflow direction, preventing dust from the motor 220 from being carried over to PCB assembly 820.

[0177] The fan 810 is disposed on the motor shaft 221. When the motor shaft 221 rotates, the fan 810 rotates to generate a heat dissipation airflow. Specifically, one end of the motor shaft 221 drives the first output shaft 211 and the second output shaft 212, and the fan 810 is located at the other end of the motor shaft 221.

[0178] The air inlet 111 is provided on at least one side of the front portion 110 in the left-right direction. In some embodiments, the air inlet 111 is provided on the left side of the front portion 110 in the left-right direction. In some embodiments, the air inlet 111 is provided on the right side of the front portion 110 in the left-right direction. In some embodiments, the air inlet 111 is provided on both the left and right sides of the front portion 110 in the left-right direction. The number of air inlets 111 is not limited. In some embodiments, the air inlet 111 is provided on one side of the front portion 110 in the left-right direction that is closer to the base plate 550 after the circular saw accessory is installed.

[0179] In some embodiments, the air outlet 112 is disposed at the upper end of the front portion 110, closer to the location of the fan 810. The air outlet 112 includes a first air outlet 112 and a second air outlet 112, which are respectively disposed on the left and right sides of the upper end of the front portion 110, thereby increasing the air outlet area, improving heat dissipation efficiency, and ensuring uniform air outlet.

[0180] In some embodiments, the circuit board assembly 820 extends within a first plane 821, and the grip portion 120 has a grip axis 121 that intersects the first plane 821. In some embodiments, the circuit board assembly 820 extends within the first plane 821, and the axis of the motor shaft 221 intersects or is parallel to the first plane 821. In some embodiments, the axis of the motor shaft 221 intersects the first plane 821, and the upper portion of the circuit board assembly 820 within the front portion 110 is tilted toward the motor 220 to fully utilize space and shorten the airflow path.

[0181] In some embodiments, the circuit board assembly 820 is housed within the rear portion 130, an air inlet 111 is provided at the rear portion 130, and an air outlet 112 is provided at the front portion 110. When the fan 810 rotates, heat dissipation air flows through the air inlet 111 into the rear portion 130, passes through at least the circuit board assembly 820, and exits the front portion 110 through the air outlet 112. This extends the airflow path, dissipating heat from more components within the housing 100 while reducing the volume of the front portion 110.

[0182] 3 and 23 to 25 , the multifunctional power tool further includes a power vibration absorbing mechanism 900 , which is disposed within the grip 120 . During use, the vibration energy of the machine is transferred to the power vibration absorbing mechanism 900 . The reaction force of the power vibration absorbing mechanism 900 during resonance reduces the vibration of the machine, thereby improving the user experience.

[0183] The dynamic vibration absorbing mechanism 900 includes at least one dynamic vibration absorber 910. The number of dynamic vibration absorbers 910 can be set according to actual needs. The stiffness and mass of the entire dynamic vibration absorbing mechanism 900 are certain, and the stiffness and mass can be adjusted according to the actual vibration magnitude. In some embodiments, one dynamic vibration absorber 910 is provided, and the dynamic vibration absorber 910 is provided in the middle position of the gripping portion 120. In some embodiments, two dynamic vibration absorbers 910 are provided, and the two dynamic vibration absorbers 910 are spaced apart along the front and rear directions of the gripping portion 120. When two dynamic vibration absorbers 910 are provided, the stiffness and mass of the two dynamic vibration absorbers 910 remain consistent. In order to achieve the best vibration reduction effect, the two dynamic vibration absorbers 910 are provided at positions with larger vibration amplitudes, that is, at the position of the gripping portion 120 close to the front 110 and at the position of the gripping portion 120 close to the rear 130.

[0184] Dynamic vibration absorber 910 includes a resonant member 911 and an elastic member 912. One end of elastic member 912 is connected to resonant member 911, and the other end of elastic member 912 is connected to the inner wall of grip 120. The vibration energy of the machine is transferred to dynamic vibration absorption mechanism 900, which drives resonant member 911 to vibrate, causing resonant member 911 to compress or stretch elastic member 912, thereby absorbing vibration.

[0185] In some embodiments, the dynamic vibration absorber 910 is configured to vibrate in the left-right direction of the grip portion 120, and elastic members 912 are provided on both the left and right sides of the resonator 911. In some embodiments, the dynamic vibration absorber 910 is configured to vibrate in the up-down direction of the grip portion 120, and elastic members 912 are provided on both the upper and lower sides of the resonator 911.

[0186] A mounting member 160 is provided on the inner wall of the gripping portion 120, and one end of the elastic member 912 away from the resonant member 911 is connected to the mounting member 160. By providing the mounting member 160, a positioning function is played on the elastic member 912 to prevent the elastic member 912 from shifting. In some embodiments, the mounting member 160 is a positioning groove for inserting the elastic member 912. The bottom surface of the positioning groove is a flattened end surface, which is convenient for fitting with the elastic member 912. The positioning groove provides a guiding function for the elastic member 912 in the left and right directions and provides a certain supporting force for the elastic member 912 in the up and down directions. In some embodiments, the mounting member 160 is a positioning platform for the elastic member 912 to be mounted. In some embodiments, the mounting member 160 is a positioning groove for inserting the elastic member 912, and a positioning platform for the elastic member 912 to be mounted is provided in the positioning groove.

[0187] Resonant member 911 is a mass block, and elastic member 912 is a spring. The mass block has a groove 9111 for the spring to be inserted into, and a boss 9112 is provided within the groove 9111 for the spring to be mounted on. The groove 9111 and boss 9112 cooperate to effectively position the elastic member 912. Specifically, the mass block is rectangular, and the spring is a cylindrical helical compression spring. All parameters of the two springs on either side of the mass block are consistent, and both ends of the springs are ground flat. The springs are compressed between the housing 100 and the mass block with a certain preload.

[0188] The vibration is transmitted from the power mechanism 200 of the front part 110 to the grip part 120, and the vibration is transferred to the mass block through the spring. The mass block generates an inertial force in the opposite direction of the vibration of the housing 100, acting on the housing 100 to reduce structural vibration and dissipate energy, so that the vibration response of the grip part 120 is attenuated and controlled.

[0189] The above technical solutions can be freely combined without contradiction.

[0190] The present application provides at least one advantageous effect: an output assembly comprising a first output shaft and a second output shaft, the first output shaft being configured to receive and drive a first accessory, the second output shaft being configured to receive and drive a second accessory, and the motor shaft driving the first and second output shafts; by interchanging the first and second accessories, various functions such as long- and short-distance cutting, polishing, and grinding can be achieved. Furthermore, because at least one of the first and second output shafts is substantially parallel to the motor shaft, the structure is compact, space is saved, the overall size of the device is reduced, the center of gravity of the device is optimized, and the user experience is enhanced.

[0191] The above shows and describes the basic principles, main features and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the scope of protection of this application.

Claims

1. A multi-functional power tool, comprising: A housing, including a front part and a gripping part; A power mechanism, including an output assembly and a motor; The output assembly includes a first output shaft and a second output shaft; The first output shaft is configured to mount and drive a first accessory, and the second output shaft is configured to mount and drive a second accessory; The motor has a motor shaft that drives the first output shaft and the second output shaft; at least one of the first output shaft and the second output shaft is substantially parallel to the motor shaft.

2. The multi-functional electric tool according to claim 1, wherein The motor shaft, the first output shaft, and the second output shaft are substantially parallel to each other.

3. The multi-functional power tool according to claim 2, wherein, The motor shaft, the first output shaft, and the second output shaft extend toward the same side of the housing.

4. The multi-functional electric tool according to claim 1, wherein The motor is disposed within the front part.

5. The multi-functional electric tool according to claim 1, wherein, The gripping part has a gripping axis, and the motor shaft is substantially perpendicular to the gripping axis.

6. The multi-functional electric tool according to claim 1, wherein, The first output shaft and the second output shaft are distributed on the front and rear sides of the motor shaft in the front-rear direction of the housing.

7. The multi-functional electric tool according to claim 1, wherein, The power mechanism further includes a first transmission assembly, and the motor shaft transmits power to the first output shaft through the first transmission assembly.

8. The multi-functional electric tool according to claim 7, wherein, The power mechanism further includes a second transmission assembly, and the motor shaft transmits power to the second output shaft through the second transmission assembly.

9. The multi-functional electric tool according to claim 8, wherein, The power mechanism further includes a transfer shaft that is connected to the motor shaft, and the first transmission assembly and the second transmission assembly share the transfer shaft.

10. The multi-functional electric tool according to claim 9, wherein, The transfer shaft includes an eccentric shaft section and a concentric shaft section. The eccentric shaft section is eccentrically disposed relative to the motor shaft, and the concentric shaft section is concentrically disposed with the motor shaft; the first transmission assembly is connected to the eccentric shaft section to convert the rotation of the motor shaft into the oscillation of the first output shaft, and the second transmission assembly is connected to the concentric shaft section to convert the rotation of the motor shaft into the rotation of the second output shaft.

11. The multi-functional power tool according to claim 1, wherein, The first output shaft is an oscillating output shaft; and / or, the second output shaft is a rotating output shaft.

12. The multi-functional electric tool according to claim 1, wherein, The second accessory is a circular saw accessory.

13. The multi-functional power tool according to claim 1, further comprising a quick-clamping mechanism that can be operated by a user to disassemble and assemble the first accessory.

14. The multi-functional electric tool according to claim 1, wherein, The height of the front part in the up-down direction of the housing is less than or equal to 110 cm, and the outer diameter of the motor is greater than or equal to 32 cm and less than or equal to 48 cm.

15. The multi-functional electric tool according to claim 1, wherein, The housing further includes a rear part. The front part, the gripping part, and the rear part are sequentially arranged in the front-rear direction. The multi-functional power tool further includes a circuit board assembly that is disposed in the front part or the rear part.

16. A multi-functional power tool, comprising: A housing, including a front part and a gripping part; A power mechanism, including an output assembly and a motor; The motor is disposed within the front part; The output assembly includes a first output shaft and a second output shaft; the first output shaft is configured to mount and drive a first accessory, and the second output shaft is configured to mount and drive a second accessory; the motor has a motor shaft that drives the first output shaft and the second output shaft.

17. The multi-functional electric tool according to claim 16, wherein, The included angle between the first output shaft and the motor shaft is between 3 - 30°.

18. A multi-functional power tool, comprising: The housing includes a front part and a holding part; The power mechanism includes an output assembly and a motor; The output assembly includes a first output shaft and a second output shaft, and the first output shaft is an oscillating output shaft; the first output shaft is arranged to mount and drive a first accessory, and the second output shaft is arranged to mount and drive a second accessory; The motor has a motor shaft, the motor shaft drives the first output shaft and the second output shaft, the transmission ratio from the motor shaft to the first output shaft is a first transmission ratio, the transmission ratio from the motor shaft to the second output shaft is a second transmission ratio, and the ratio of the first transmission ratio to the second transmission ratio is greater than or equal to 2.5 and less than or equal to 4.

5.

19. The multi-functional electric tool according to claim 18, wherein, The ratio of the output efficiency of the first output shaft to that of the second output shaft is greater than or equal to 0.9 and less than or equal to 1.

35.

20. The multi-functional electric tool according to claim 18, wherein, The width of the holding part in the left - right direction of the housing is less than or equal to 48 cm, and / or the height of the holding part in the up - down direction of the housing is less than or equal to 64 cm.

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