Power tool combination and auxiliary device

Abstract

The utility model discloses a power tool combination which comprises a power tool and an auxiliary device. The output part is used for outputting power; the auxiliary device comprises a mechanical arm connected with the power tool, and the mechanical arm is configured to adjust the power tool to a preset position; the walking mechanism is used for supporting the mechanical arm; the power tool combination further comprises a power supply, and the power supply supplies power to at least one of the power tool and the auxiliary device. The power tools in the power tool combination are labor-saving in operation.

Description

Technical Field

[0001] The present application relates to an electric tool, and more particularly to a power tool combination and an auxiliary device. Background Art

[0002] Impact tools are tools that produce rotational motion at a specific impact frequency. Common impact tools include impact wrenches, impact screwdrivers, and impact drills. Impact wrenches are typically used to tighten bolts and nuts, impact screwdrivers are typically used to loosen or tighten screws, and impact drills are typically used to drill holes.

[0003] To produce a rotational motion with a specific impact frequency, impact tools typically include an output assembly for outputting the rotational force and an impact assembly for periodically impacting the output assembly. In related art, impact wrenches used for removing and installing nuts from vehicle tires or in railway construction require high output torque, resulting in heavy weight, often exceeding 10 kg.

[0004] This section provides background information related to the present application which is not necessarily prior art. Utility Model Content

[0005] One object of the present application is to solve or at least alleviate part or all of the above problems. To this end, one object of the present application is to provide a power tool combination and auxiliary device that can provide a more ergonomic power tool.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A power tool combination includes a power tool and an auxiliary device, the power tool including: a motor; an output part for outputting power; the auxiliary device including: a mechanical arm connected to the power tool, the mechanical arm being configured to adjust the power tool to a preset position; a walking mechanism for supporting the mechanical arm; the power tool combination also includes: a power supply, the power supply supplying power to at least one of the power tool and the auxiliary device.

[0008] In some embodiments, the robotic arm includes a first moving component and a second moving component connected to each other, one of which is supported by a walking mechanism, and the output end of the other is connected to a power tool. The first moving component can drive the power tool to move, and the second moving component at least drives the power tool to rotate.

[0009] In some embodiments, the robotic arm also includes a support frame, which is supported and connected to the walking mechanism, and the first moving component and the second moving component are connected to the support frame, and the first moving component, the second moving component and the support frame include at least one drive motor for driving the first moving component and the second moving component.

[0010] In some embodiments, the second moving component provides rotational motion with at least two degrees of freedom.

[0011] In some embodiments, the walking mechanism includes a walking wheel group, a base and a walking motor. The walking wheel group is rotatably connected to the base, the robotic arm is supported by the base, and the walking motor drives the walking wheel group to rotate.

[0012] In some embodiments, the traveling wheel set includes a front wheel and a rear wheel, the traveling motor drives the rear wheel, and the front wheel is a steering wheel.

[0013] In some embodiments, the front wheels are casters.

[0014] In some embodiments, the traveling mechanism further includes a transmission mechanism, and the traveling motor is connected to the traveling wheel set through the transmission mechanism.

[0015] In some embodiments, the traveling mechanism further includes a speed regulating assembly, which is configured to adjust the traveling speed of the traveling wheel set.

[0016] In some embodiments, the auxiliary device further comprises a frame assembly, wherein the frame assembly forms a storage space.

[0017] In some embodiments, the power supply includes a first power supply, which is located in the storage space; and / or the power tool can be stored in the storage space; and / or the auxiliary device also includes a storage box, which is located in the storage space; and / or the auxiliary device also includes a storage box, which is detachably connected to the frame assembly and is located outside the storage space.

[0018] In some embodiments, when the power supply includes a first power supply, the first power supply includes at least one battery pack, and the storage space is further equipped with a charger, and the charger is configured to charge the battery pack.

[0019] In some embodiments, the power supply includes a first power supply and a second power supply, the first power supply is configured to supply power to the robotic arm and / or the walking mechanism, and the second power supply is configured to supply power to the power tool.

[0020] In some embodiments, the auxiliary device further includes a light and / or an air pump configured for inflation.

[0021] In some embodiments, a control component is further included, and the power tool and the auxiliary device are respectively communicatively connected to the control component.

[0022] In some embodiments, a human-computer interaction panel is further included, and the human-computer interaction panel is communicatively connected to the control component.

[0023] An auxiliary device is used to assist a power tool in changing its position. The power tool includes a prime mover and an output part, and the prime mover provides power to the output part. The auxiliary device includes: a robotic arm connected to the power tool, and the robotic arm is configured to adjust the power tool to a preset position; a walking mechanism for supporting the robotic arm; at least one of the auxiliary device and the power tool includes a power supply, and the power supply includes a battery pack.

[0024] The beneficial effects of this application are as follows: a high-torque power tool is coupled to an auxiliary device, and a traveling mechanism can move the power tool approximately to a target position, eliminating the need for manual handling and lifting, thereby enabling rapid movement of the power tool. A robotic arm can adjust the power tool to a preset position to align it with a workpiece and remove and install fasteners on the workpiece. Alignment of the power tool is facilitated by the traveling mechanism and the robotic arm, reducing operational difficulty and alleviating the workload of personnel, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of an impact tool according to an embodiment of the present application;

[0026] Figure 2 is a structural schematic diagram of an impact tool according to an embodiment of the present application from another perspective;

[0027] Figure 3 is a cross-sectional view of an impact tool according to an embodiment of the present application;

[0028] Figure 4 is a schematic structural diagram of an impact tool according to another embodiment of the present application;

[0029] Figure 5 yes Figure 4 A schematic structural diagram of the impact tool from another perspective;

[0030] Figure 6 is a schematic structural diagram of an impact tool according to another embodiment of the present application, wherein the guide rails extend in different directions;

[0031] Figure 7 is a schematic structural diagram of an impact tool according to a third embodiment of the present application;

[0032] Figure 8 is a schematic structural diagram of an impact tool according to a fourth embodiment of the present application;

[0033] Figure 9 yes Figure 8 A schematic structural diagram of the impact tool from another perspective;

[0034] Figure 10is a structural schematic diagram of an impact tool according to a fifth embodiment of the present application, wherein the first handle is in a first working position;

[0035] Figure 11 is a structural schematic diagram of an impact tool according to a fifth embodiment of the present application, wherein the first handle is in a second working position;

[0036] Figure 12 yes Figure 10 Cross-sectional view of the middle structure;

[0037] Figure 13 yes Figure 10 Exploded view of the middle structure;

[0038] Figure 14 A schematic structural diagram of an impact tool according to a sixth embodiment of the present application,

[0039] Figure 15 yes Figure 14 A schematic structural diagram of the impact tool from another perspective;

[0040] Figure 16 A schematic structural diagram of an impact tool according to a seventh embodiment of the present application;

[0041] Figure 17 A schematic structural diagram of another impact tool according to a seventh embodiment of the present application;

[0042] Figure 18 A schematic structural diagram of another impact tool according to a seventh embodiment of the present application;

[0043] Figure 19 A schematic structural diagram of another second handle of the impact wrench of the present application;

[0044] Figure 20 An exploded view of another second handle of the impact wrench of the present application;

[0045] Figure 21 A cross-sectional view of another second handle of the impact wrench of the present application;

[0046] Figure 22 A schematic structural diagram of the third second handle of the impact wrench of the present application;

[0047] Figure 23 A cross-sectional view of a third second handle of the impact wrench of the present application;

[0048] Figure 24 A cross-sectional view of a portion of the structure of the impact wrench of the present application;

[0049] Figure 25 A schematic diagram of the arrangement of the third fastener and the fourth fastener of the impact wrench of the present application;

[0050] Figure 26 Schematic diagram of the rear cover housing and fins of the impact wrench of the present application;

[0051] Figure 27 is a schematic diagram of a power tool assembly from one perspective provided by an embodiment of the present application;

[0052] Figure 28 is a schematic diagram of a power tool assembly from another perspective provided by an embodiment of the present application;

[0053] Figure 29 is a schematic diagram of a power tool assembly provided by one embodiment of the present application, wherein the power tool assembly does not have a protective cover;

[0054] Figure 30 It is a schematic diagram of a power tool combination provided in another embodiment of the present application. DETAILED DESCRIPTION

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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 the specific value, the tolerance caused by manufacturing, assembly, and use associated with the specific value, etc. 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" when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular) may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) based on the indicated angle.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] In this application, the terms "device", "module" or "unit" can be implemented in the form of hardware or software to achieve specific functions.

[0064] 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.).

[0065] In order to clearly illustrate the technical solution of the present application, the upper side, lower side, left side, and right side are defined in the drawings of the specification.

[0066] like Figure 1 and Figure 2 A handheld power tool in the form of an impact tool or impact wrench 100 is shown. It will be appreciated that in other alternative embodiments, the impact tool may be equipped with different working accessories, such as an impact screwdriver, an impact drill, etc.

[0067] The impact wrench 100 includes a power supply. In the present embodiment, the power supply is a DC power supply 30. The DC power supply is used to provide electrical energy to the impact wrench 100. The DC power supply is a battery pack, which cooperates with the corresponding power supply circuit to power the impact wrench 100. Those skilled in the art should understand that the power supply is not limited to the scenario of using a DC power supply, and can also be powered by AC power, AC power, and corresponding rectification, filtering and voltage regulation circuits to achieve power supply to the corresponding components in the machine. In the present embodiment, the DC power supply is a battery pack, and the battery pack 30 will be used to replace the power supply below, but it cannot be used as a limitation of the present invention.

[0068] In this embodiment, the battery pack 30 may be a lithium battery pack, a solid-state battery pack, or a soft-pack battery pack. The battery pack includes a battery pack shell and a single battery cell in the battery pack shell. The battery cell is a rechargeable battery cell. Each battery cell has a nominal voltage between 3 volts and 5 volts. In some embodiments, the nominal voltage of a single battery pack 30 is greater than or equal to 8V and less than or equal to 48V. The battery pack may have a nominal capacity of at least 5 ampere-hours (Ah) (for example, having two strings of five battery cells connected in series ("5S2P" battery pack)) to improve battery life. In some embodiments, the battery pack may have a nominal capacity of at least 9Ah (for example, having three strings of five battery cells connected in series ("5S3P" battery pack).

[0069] like Figures 1 to 3 As shown, the impact wrench 100 includes a motor 11, an output mechanism 12, an impact assembly 13, a housing 14, and a first handle 15. The motor 11 includes a drive shaft that rotates about a first axis 101. The output mechanism includes an output shaft 121 that rotates about an output axis 102 and is configured to output torque. The motor 11 is drivably coupled to the impact assembly 13, which is configured to apply an impact force to the output shaft 121.

[0070] In this embodiment, the motor 11 is specifically configured as an electric motor. Hereinafter, the motor 11 will be used to replace the motor, and the motor shaft 111 will be used to replace the drive shaft. However, this is not intended to limit the present application. In this embodiment, the motor 11 can be a brushless direct current ("BLDC") motor. The motor 11 includes a stator 115 and a rotor 116. The rotor 116 forms or is connected to the motor shaft 111.

[0071] A clamping assembly is provided at the front end of the output shaft 121, which can clamp corresponding working accessories, such as a screwdriver, a drill bit, a sleeve, etc., when implementing different functions.

[0072] The output shaft 121 is used to output torque to operate the fastener. The output shaft 121 rotates about the output axis 102. In this embodiment, the first axis 101 and the output axis 102 coincide with each other. In other alternative embodiments, the output axis 102 is arranged at a certain angle to the first axis 101. In other alternative embodiments, the first axis 101 and the output axis 102 are arranged parallel to each other but do not coincide with each other.

[0073] The impact assembly 13 is used to apply an impact force to the output shaft 121. The impact assembly 13 comprises a main shaft 131, an impact block 132 sleeved around the main shaft, an anvil 133 positioned at the front end of the impact block 132, and an elastic element 134. The anvil 133 is connected to the output shaft 121. In this embodiment, the anvil 133 includes an anvil seat 135, with the output shaft 121 formed at the front end of the anvil seat 135. It is understood that the anvil seat 135 and the output shaft 121 may be integrally formed or formed as separate components.

[0074] Continue to refer Figures 1 to 3 As shown, the elastic element 134 provides a force to force the impact block 132 toward the anvil 133. In this embodiment, the elastic element 134 is a coil spring. The front end surface of the impact block 132 is also provided with a pair of first ball grooves, opening forward and extending rearward in the front-to-back direction. A pair of second ball grooves are also formed on the outer surface of the spindle. The impact assembly 13 also includes a rolling ball. The rolling ball spans the first and second ball grooves, thereby connecting the impact block 132 to the spindle. In this embodiment, the rolling ball is a steel ball.

[0075] The motor 11 and impact assembly 13 are at least partially housed within a housing 14. The housing 14 extends generally along the first axis 101. A first handle 15 is disposed at the end of the housing 14 facing away from the output shaft 121. Along the first axis 101, the first handle 15 and the housing 14 at least partially overlap. The two may be integral or separate structures. A DC power supply comprises at least two battery packs 30 and is supported by the housing 14. Along the first axis 101, the DC power supply 30 and the motor 11 at least partially overlap. As a result, the combined dimensions of the DC power supply 30 and motor 11 along the first axis 101 are smaller than the sum of the dimensions of the DC power supply 30 and the motor 11 along the first axis 101. This reduces the length of the impact tool along the first axis 101, resulting in a more compact structure. The first handle 15 is positioned closer to the center of gravity of the impact tool 100. This enhances the balance of the impact tool 100 when the operator grasps the first handle 15. For convenience of reference, the DC power supply includes a first battery pack 30a and a second battery pack 30b.

[0076] like Figures 2 to 3 As shown, the DC power supply 30 at least partially overlaps the stator 115 of the motor 11, placing the DC power supply as close to the first handle 15 as possible, shifting the center of gravity rearward and facilitating alignment adjustment of the output shaft 121. For example, along the first axis 101, the first and second battery packs 30a, 30b, respectively, at least partially overlap the stator 115 of the motor 11.

[0077] In this embodiment, the central axes of the motor 11 and the housing 14 extend in the same direction and are therefore parallel to each other. Therefore, the motor shaft 111 of the motor 11 and the housing 14 extend in the front-to-back direction. In this embodiment, the housing 14 extends coaxially with the central axis of the motor shaft 111, resulting in an in-line configuration of the impact tool 100.

[0078] In one embodiment, the DC power supply is supported by the housing 14 and is disposed on the left and / or right side of the housing 14. Exemplarily, the first battery pack 30a and the second battery pack 30b are disposed on the left and right sides of the housing 14, respectively. In this embodiment, the vertical plane passing through the first axis 101 is set as the center plane S1, and the two sides of the center plane S1 are defined as the left and right sides of the housing 14. The first battery pack 30a and the second battery pack 30b are disposed on the left and right sides of the housing 14, respectively. It is understood that the first battery pack 30a is only located on the left or right side of the housing 14, and the second battery pack 30b is only located on the right or left side of the housing 14. The first battery pack 30a and the second battery pack 30b do not span the left and right sides. Optionally, the first battery pack 30a and the second battery pack 30b are symmetrically supported on both sides of the housing 14 with the first axis 101 as the center axis.

[0079] The first handle 15 is generally D-shaped, and the first handle 15 is at least partially connected to the housing 14. The first handle 15 includes a surrounding finger through hole. In this embodiment, the first handle 15 includes a first opening 152 for accommodating fingers. The first opening 152 is a receiving space that completely surrounds the fingers, that is, the first opening 152 is a closed hole. The connection between the housing 14 and the first handle 15 is a shock-absorbing connection, which is comfortable to hold. The shock-absorbing connection refers to the prior art and will not be described in detail. The first handle 15 is located behind the housing 14, allowing the user to push and pull directly relative to the impact wrench without generating rotational movement or torque between them. In this embodiment, the first battery pack 30a and the second battery pack 30b are respectively located in front of the first handle 15. Exemplarily, the first battery pack 30a and the second battery pack 30b are respectively located at least partially in front of the first handle 15.

[0080] The impact wrench 100 also includes a power switch 18 and a switching unit 183. The power switch 18 is used to turn the motor 11 on and off. Exemplarily, the power switch 18 is used to control the power supply state of the motor 11. The switching unit 183 is located above the power switch 18 and is configured to be operated to set the rotation direction of the motor 11 to either the forward direction for tightening or screwing in a fastener or the reverse direction for loosening or unscrewing a fastener. In this embodiment, the switching unit 183 is a toggle switch. The power switch 18 is located on the first handle 15. Exemplarily, the power switch 18 is located within the accommodation space of the first opening 152. In this embodiment, the first handle 15 includes a grip portion 151, on which the power switch 18 is located. The grip portion 151 includes a grip portion 1511 downstream of the power switch 18. The grip portion 1511 is configured to support at least a portion of a user's palm when the user's fingers operate the power switch 18. The grip portion 1511 is provided on the downstream side of the power switch 18 along the extending direction.

[0081] like Figures 2 to 3 As shown, a fan 114 is provided on the rear side of the motor 11 for dissipating heat for the motor 11 and the impact wrench 100. The fan 114 is formed on or connected to the motor shaft 111. When the motor 11 rotates, the fan 114 rotates with the motor 11. An air inlet 143 is provided on the housing 14 so that when the fan 114 rotates, cooling air enters the interior of the housing 14 through the air inlet 143 to dissipate heat for the motor 11 and the impact wrench 100. In this embodiment, the DC power supply 30 is provided in front of the air inlet 143. Exemplarily, the DC power supply 30 and the air inlet 143 are staggered so that the DC power supply does not completely block the air inlet 143.

[0082] The housing 14 includes an output housing 141 and a motor housing 142. The output housing 141 supports the output shaft 121. The motor 11 is at least partially supported within the motor housing 142, and the output housing 141 is connected to the motor housing 142. In this embodiment, the first handle 15 is formed on or connected to the motor housing 142. It is understood that the motor housing 142 can be assembled from multiple housings. In some embodiments, the motor housing 142 is a split structure due to modeling or mold manufacturing reasons. Alternatively, the motor housing 142 can be a two-part structure, for example, the motor housing 142 includes a left half shell and a right half shell, or a front half shell and a rear half shell, or an upper half shell and a lower half shell that can be spliced together. Optionally, the motor housing 142 can be a multi-part structure. Exemplarily, the motor housing 142 is made of plastic material. In this embodiment, the output housing 141 can be a one-piece structure or a split structure. Optionally, the output housing 141 includes at least a front housing 141a disposed around the output shaft 121. The front housing 141a supports at least a bearing or sleeve on the outside of the output shaft 121. In this embodiment, the front housing 141a is made of metal. To ensure the connection between the output housing 141 and the motor housing 142, the output housing 141 includes left and right half-shells, or front and rear half-shells, or upper and lower half-shells that can be spliced together.

[0083] Since the impact wrench 100 is heavy and difficult to operate with one hand, a second handle 16 is provided at the end of the housing 14 facing the output shaft 121. The first handle 15 and the second handle 16 can be held with both hands respectively. Holding the first handle 15 can operate the switch of the impact tool 100 and control the reversing, and holding the second handle 16 assists in lifting and carrying, making it more convenient and labor-saving to use. In this embodiment, the second handle 16 is connected to the output housing 141. In some embodiments, the second handle 16 is connected to the front housing 141a. The second handle 16 includes a grip 161 and a mounting portion 163, and the mounting portion 163 connects the second handle 16 and the housing 14. The grip 161 can be generally U-shaped or annular. In some embodiments, the grip 161 can be covered by an elastomeric overmolding.

[0084] The second handle 16 can be pivotally connected to the housing 14 and can be adjusted between various orientations. In one embodiment, the impact wrench 100 does not include a second handle. In some embodiments, the second handle 16 is fixedly connected to the housing 14.

[0085] The impact wrench 100 also includes a power supply mount 19. The power supply mount 19 defines a mounting slot 192 with guide rails 191. An electrical connector is located within the mounting slot 192, into which a battery can slide and engage. The battery pack 30 includes a release button to release the lock that secures the battery to the battery base when the battery pack 30 is fully inserted into the guide rails 191 of the battery base. The battery pack 30 also includes a charge level indicator 193, which is exposed at the top of the impact tool 100 and faces inward when the battery pack 30 is connected to the power supply mount 19. In this embodiment, the power supply mount 19 is formed on or attached to the housing 14. Exemplarily, the power supply mount 19 is located on the motor housing 142. Two power supply mounts 19 are symmetrically supported on either side of the motor housing 142, centered about the first axis 101. The direction in which the guide rails 191 extend defines the installation direction and orientation of the battery pack 30 after installation. Optionally, the guide rails of the first battery pack 30a extend along a first direction F1, and the guide rails of the second battery pack 30b extend along a second direction F2, and the first direction F1 is substantially parallel to the second direction F2.

[0086] like Figure 3 As shown, a transmission mechanism 17 is disposed between the motor 11 and the impact assembly 13, and is used to transmit power between the motor shaft 111 and the main shaft. In this embodiment, the transmission mechanism 17 utilizes a planetary gear reduction system. Because the operating principles of planetary gear reduction systems and the reduction speed achieved by such transmission mechanisms are well known to those skilled in the art, a detailed description is omitted here for the sake of brevity.

[0087] In this embodiment, the impact wrench 100 is a high-torque power tool. In this embodiment, the output shaft 121 of the impact wrench 100 is capable of outputting at least 1000 N·m of torque. Exemplarily, the impact wrench 100 weighs more than 5 kg. Optionally, the output shaft 121 of the impact wrench 100 is capable of outputting at least 1500 N·m of torque. Optionally, the output shaft 121 of the impact wrench 100 is capable of outputting at least 2000 N·m of torque. Optionally, the output shaft 121 of the impact wrench 100 is capable of outputting at least 2500 N·m of torque.

[0088] The large impact tool 100 described above can be used in high-torque applications, such as an impact wrench 100 for tightening and loosening heavy truck wheel fasteners. The impact wrench 100 is capable of applying a large tightening torque to a fastener. As defined herein, the term "tightening torque" refers to torque applied to a fastener in a direction that increases tension (i.e., in a tightening direction). In particular, the impact assembly and transmission assembly of the impact wrench 100 convert a continuous torque input from the motor 11 to transmit a continuous rotational impact on a workpiece, thereby generating a tightening torque of at least 1500 N·m while the motor 11 draws no more than 100 amperes (A). In some embodiments, the impact assembly and transmission assembly transmit a continuous rotational impact on the workpiece, thereby generating a tightening torque of at least 1500 N·m while the motor 11 draws no more than 80 A. In some embodiments, the impact assembly and transmission assembly of the impact wrench 100 convert continuous torque input from the motor 11 to deliver continuous rotational impacts on the workpiece, thereby generating a tightening torque of at least 2000 N·m while the motor 11 draws no more than 100 amperes (A). In some embodiments, the impact assembly and transmission assembly deliver continuous rotational impacts on the workpiece, thereby generating a tightening torque of at least 2000 N·m while the motor 11 draws no more than 80 A. The impact assembly and transmission assembly of the impact wrench 100 convert continuous torque input from the motor 11 to deliver continuous rotational impacts on the workpiece, thereby generating a tightening torque of at least 2500 N·m while the motor 11 draws no more than 100 amperes (A). In some embodiments, the impact assembly and transmission assembly deliver continuous rotational impacts on the workpiece, thereby generating a tightening torque of at least 2500 N·m while the motor 11 draws no more than 80 A.

[0089] In some embodiments, the impact wrench 100 weighs more than 10 kg. In some embodiments, the impact wrench 100 weighs more than 15 kg.

[0090] like Figures 4 to 6 An impact wrench 100B according to another embodiment is shown. The impact wrench 100B is similar to the one described above with reference to FIG. Figures 1 to 3 Therefore, features and elements of the impact wrench 100B that correspond to features and elements of the impact wrench 100 are given like reference numerals followed by the letter "B." Additionally, the following description focuses primarily on the differences between the impact wrench 100B and the impact wrench 100.

[0091] Along the first axis 101B, the DC power supply 30B' at least partially overlaps the motor 11B. The DC power supply 30B' is supported by the housing 14B and disposed on the underside of the housing 14B. Exemplarily, the first battery pack 30a and the second battery pack 30b are each disposed on the underside of the housing 14B. Exemplarily, the first battery pack 30a and the second battery pack 30b are each disposed at the bottom of the housing 14B. In this embodiment, at least one of the first battery pack 30a and the second battery pack 30b at least partially overlaps the stator 115B of the motor 11B. In this embodiment, the first battery pack 30a and the second battery pack 30b each have a nominal capacity greater than or equal to 5 ampere-hours (Ah), and the first battery pack 30a or the second battery pack 30b at least partially overlaps the stator 115B of the motor 11B.

[0092] Along the first axis 101B, the DC power supply 30B' at least partially overlaps the first handle 15B. In this embodiment, the first battery pack 30a or the second battery pack 30b is at least partially disposed at the bottom of the first handle 15B. The power supply mounting portion 19B is disposed on the motor 11B housing and the lower housing of the first handle 15B, respectively. The power supply mounting portion 19B defines a mounting slot 192B with a guide rail 191B. The extension direction of the guide rail 191B defines the installation direction and positioning direction of the battery pack 30 after installation. Optionally, the guide rail of the first battery pack 30a extends along a first direction F1B, and the guide rail of the second battery pack 30b extends along a second direction F2B. Exemplarily, the first direction F1B and the second direction F2B are substantially parallel. Exemplarily, the angle between the first direction F1B and the second direction F2B is 0 degrees, meaning that the first battery pack 30a and the second battery pack 30b are mounted on the power supply mounting portion 19B in the same direction. Illustratively, the included angle between the first direction F1B and the second direction F2B is 180°, that is, the first battery pack 30a and the second battery pack 30b are installed on the power supply installation portion 19B from opposite directions.

[0093] The battery pack 30 has a length L1, a width W1, and a height H1. The length L1 of the battery pack 30 is greater than its width W1 and greater than its height H1. The first and second battery packs 30a, 30b are coupled to the power supply mounting portion 19B along the length L1. For example, the length L1 of the first and second battery packs 30a, 30b is orthogonal to the first axis 101B. In this embodiment, the first and second battery packs 30a, 30b are coupled to the power supply mounting portion 19B in the left-right direction. The first and second battery packs 30a, 30b are arranged sequentially along the width W1 of the battery pack 30.

[0094] like Figure 6As shown, the first battery pack 30a and the second battery pack 30b are coupled to the power supply mounting portion 19B along the longitudinal direction L1. Exemplarily, the longitudinal direction L1 of the first and second battery packs 30a, 30b is parallel to the first axis 101B. In this embodiment, the first and second battery packs 30a, 30b are coupled to the power supply mounting portion 19B along the front-to-back direction. The guide rails of the first battery pack 30a extend along the first direction F1B, while the guide rails of the second battery pack 30b extend along the second direction F2B. The first direction F1B and the second direction F2B coincide, meaning that the first and second battery packs 30a, 30b are coaxially mounted. The first and second battery packs 30a, 30b are arranged sequentially along the longitudinal direction L1 of the battery pack 30. In this embodiment, the angle between the insertion direction of the first and second battery packs is 180°.

[0095] like Figure 7 An impact wrench 100C according to another embodiment is shown. The impact wrench 100C is similar to the one described above with reference to FIG. Figures 1 to 3 Therefore, features and elements of the impact wrench 100C that correspond to features and elements of the impact wrench 100 are given like reference numerals followed by the letter "C." Additionally, the following description focuses primarily on the differences between the impact wrench 100C and the impact wrench 100.

[0096] The DC power supply 30C is positioned behind the first handle 15C along the first axis 101C. Exemplarily, the power supply mounting portion 19C is positioned behind the first handle 15C along the first axis 101C. In this embodiment, the DC power supply 30C is supported by the first handle 15C and positioned on the left and / or right sides of the first handle 15C. Exemplarily, the first and second battery packs 30a and 30b are positioned on the left and right sides of the first handle 15C, respectively. The first and second battery packs 30a and 30b being positioned on the left and right sides of the first handle 15C, respectively, means that the first battery pack 30a is positioned only on the left or right side of the housing 14C, and the second battery pack is positioned only on the right or left side of the housing 14C. The first and second battery packs 30a and 30b do not straddle the left and right sides. Optionally, the first and second battery packs 30a and 30b are symmetrically supported on either side of the first handle 15C, centered around the first axis 101C.

[0097] like Figures 8 and 9 An impact wrench 100D according to another embodiment is shown. The impact wrench 100D is similar to the one described above with reference to FIG. Figures 1 to 3Therefore, features and elements of the impact wrench 100D that correspond to features and elements of the impact wrench 100 are given like reference numerals followed by the letter "D." Furthermore, the following description focuses primarily on the differences between the impact wrench 100D and the impact wrench 100.

[0098] The first handle 15D is disposed at the end of the housing 14D facing away from the output shaft 121D. In this embodiment, the first handle 15D at least partially overlaps the housing of the motor 11D along the first axis 101D. Thus, the dimension of the entire assembly formed by the first handle 15D and the DC power supply 30D along the first axis 101D is less than the sum of the dimensions of the first handle 15D and the DC power supply 30D along the first axis 101D. Exemplarily, the gripping portion 151D of the first handle 15D extends along the third direction F3D. Exemplarily, the gripping portion 151D of the first handle 15D extends obliquely from the motor housing 142D along the third direction F3D and extends upward above the motor 11D.

[0099] The DC power supply 30D is positioned behind the motor 11D along the first axis 101D. Illustratively, the first and second battery packs 30a, 30b are positioned behind the stator 115D. The first handle 15D at least partially overlaps the DC power supply 30D along the first axis 101D. Illustratively, the grip portion 1511D at least partially overlaps the DC power supply 30D along the first axis 101D. This reduces the axial dimension of the impact tool 100D.

[0100] The DC power supply 30D is supported by the housing 14D and disposed on the left and / or right side of the housing 14D. Exemplarily, the first battery pack 30a and the second battery pack 30b are disposed on the left and right sides of the housing 14D, respectively. In this embodiment, a vertical plane passing through the first axis 101D is defined as the center plane S1D, and the two sides of the center plane are defined as the left and right sides of the housing 14D. The first battery pack 30a and the second battery pack 30b are disposed on the left and right sides of the housing 14D, respectively. This means that the first battery pack 30a is only located on the left or right side of the housing 14D, and the second battery pack 30b is only located on the right or left side of the housing 14D. The first battery pack 30a and the second battery pack 30b do not span the left and right sides. Optionally, the first battery pack 30a and the second battery pack 30b are symmetrically supported on both sides of the housing 14D with the first axis 101D as the center axis.

[0101] In this embodiment, the DC power supply 30D is disposed behind the air inlet 143D. For example, the DC power supply 30D and the air inlet 143D are staggered so that the DC power supply 30D does not completely block the air inlet 143D.

[0102] In this embodiment, the power supply mounting portion 19D is formed or connected to the housing 14D. Exemplarily, the power supply mounting portion 19D is provided on the motor housing 142D. The two power supply mounting portions 19D are symmetrically supported on both sides of the motor housing 142D with the first axis 101D as the center axis. The extension direction of the guide rail 191D defines the installation direction of the battery pack 30 and the positioning direction after installation. Optionally, the guide rail 191D of the first battery pack 30a extends along the first direction F1D and the guide rail 191D of the second battery pack 30b extends along the second direction F2D, and the first direction F1D intersects with the second direction F2D, that is, the first direction F1D and the second direction F2D are V-shaped oriented relative to each other, and the top of the guide rail 191D is spaced farther from each other than the bottom of the guide rail 191D. To reduce the radial dimension of the impact tool 100D. In this embodiment, as Figure 9 As shown, the impact wrench 100D is orthographically projected along the first axis 101D, with the motor 11D radially overlapping the DC power supply 30. In the vertical direction, the lower portion of the DC power supply 30 does not exceed the outline of the output housing 141D.

[0103] like Figures 10 to 13 An impact wrench 100E according to another embodiment is shown. The impact wrench 100E is similar to the one described above with reference to FIG. Figures 1 to 3 Therefore, features and elements of the impact wrench 100E that correspond to features and elements of the impact wrench 100 are given like reference numerals followed by the letter "E." Furthermore, the following description focuses primarily on the differences between the impact wrench 100E and the impact wrench 100.

[0104] In this embodiment, along the first axis 101E, the DC power supply 30E is arranged between the first handle 15E and the output shaft 121E; the first handle 15E is rotatably connected around the handle axis 104E relative to the housing 14E, and the first handle 15E is provided with a first opening 152E for accommodating fingers, and the opening direction of the first opening 152E is parallel to the direction of the handle axis 104E.

[0105] The first handle 15E has a plurality of adjustable working positions around the handle axis 104E, for example Figure 10 The first working position, and Figure 11 The second working position is shown. When the first handle 15E is in any working position, it can remain in the selected working position, allowing the user to grip the first handle 15E to operate the impact wrench 100E. In this embodiment, the handle axis 104E is orthogonal to the first axis 101E. Exemplarily, the first handle 15E has a first opening 152E extending in the left-right direction, and the handle axis 104E extends in the left-right direction. Exemplarily, the first handle 15E has a first opening 152E extending in the up-down direction, and the handle axis 104E extends in the up-down direction.

[0106] like Figures 12 to 13 As shown, the first handle 15E includes a housing assembly 153E and an adjustment assembly 154E. The housing assembly 153E is in the form of a left and right half shell, comprising a first housing 1531E and a second housing 1532E. The first and second housings 1531E and 1532E are joined to form a storage space, and the adjustment assembly 154E is at least partially located within the storage space. The first handle 15E is rotatably connected to the motor housing 142E. The motor housing 142E is in the form of a left and right half shell, comprising a first motor housing 143E and a second motor housing 144E. The adjustment assembly 154E connects the first handle 15E and the motor housing 142E.

[0107] The adjustment assembly 154E includes an operating member 1541E, a limiting member 1542E, and a rotating shaft member 1543E. The operating member 1541E is at least partially disposed outside the first handle 15E and the motor housing 142E. The operating member 1541E is used to be triggered by the user to adjust the angle of the first handle 15E. The rotating shaft member 1543E connects the first handle 15E and the motor housing 142E. In this embodiment, the rotating shaft member 1543E passes through the first housing 1531E, the first motor housing 143E, the second motor housing 144E, and the second housing 1532E in sequence. The handle axis 104E is the centerline of the rotating shaft member 1543E. In this embodiment, the rotating shaft member 1543E is composed of two left and right parts, and the rotating shaft member 1543E includes a first rotating shaft 1544E and a second rotating shaft 1545E. The limiting member 1542E is used to maintain the first handle 15E in a selected working position. The stopper 1542E includes teeth 1546E arranged circumferentially around the handle axis 104E, and mating teeth that engage with the teeth 1546E of the stopper 1542E. The stopper 1542E engages both the first handle 15E and the motor housing 142E. The inner sidewall of the first housing 1531E is provided with first mating teeth 1547E that engage with the teeth 1546E of the stopper 1542E. The first motor housing 143E is provided with second mating teeth 1548E that engage with the teeth 1546E of the stopper 1542E.

[0108] When the user needs to change the first handle 15E from Figure 10 The first working position shown is adjusted to Figure 11The second working position shown can be understood as when the user needs to adjust the relative position of the first handle 15E and the motor housing 142E, i.e., the working position. The user triggers the operating member 1541E to disengage the tooth portion 1546E of the limiting member 1542E from the first mating tooth 1547E, so that the tooth portion 1546E of the limiting member 1542E only engages with the second mating tooth 1548E. The first handle 15E is rotated around the handle axis 104E as needed to the desired working position. The limiting member 1542E is reset until the tooth portion 1546E engages with the first mating tooth 1547E and the tooth portion 1546E engages with the second mating tooth 1548E, and the first handle 15E is maintained in the desired working position relative to the motor housing 142E. In this embodiment, the limit member 1542E is composed of two parts, left and right. Therefore, the first limit member 1542E is respectively engaged with the first mating tooth 1547E and the second mating tooth 1548E, and the second limit member 1542E is respectively engaged with the third mating tooth on the second motor housing 144E and the fourth mating tooth on the second housing 1532E.

[0109] In this embodiment, the operating member 1541E and the limiting member 1542E are formed or connected to the rotating shaft member 1543E. The limiting member 1542E is arranged along the circumference of the rotating shaft member 1543E, and the operating member 1541E is arranged on the outer surface of the rotating shaft member 1543E. Optionally, the adjustment assembly 154E also includes a reset member 155E, which is used to drive the tooth portion 1546E of the limiting member 1542E to engage with the first mating tooth 1547E and the fourth mating tooth. The reset member 155E includes a coil spring. The reset member 155E is arranged between the limiting member 1542E and the motor housing 142E. For example, a first reset member 1551E is arranged between the first limiting member 1542E and the first motor housing 143E, and a second reset member 1552E is arranged between the second limiting member 1542E and the second motor housing 144E. The first restoring member 1551E and the second restoring member 1552E always provide the first limiting member 1542E and the second limiting member 1542E with a force to move the first shell 1531E and the second shell 1532E.

[0110] It can be understood that in some embodiments, the operating member 1541E may not be provided. The user can directly rotate the first handle 15E to disengage the tooth portion 1546E of the limit member 1542E from the mating tooth limit. When rotated to a certain angle, the tooth portion 1546E of the limit member 1542E engages with the mating tooth limit again, locking the position of the first handle 15E relative to the motor housing 142E.

[0111] like Figures 14 and 15 An impact wrench 100F according to another embodiment is shown. The impact wrench 100F is similar to the impact wrench 100F described above with reference to FIG. Figures 1 to 3Therefore, features and elements of the impact wrench 100F that correspond to features and elements of the impact wrench 100 are given like reference numerals followed by the letter "F." Furthermore, the following description focuses primarily on the differences between the impact wrench 100F and the impact wrench 100.

[0112] In this embodiment, a first handle 15F is disposed along first axis 101F at the end of housing 14F facing away from output shaft 121F. First handle 15F surrounds at least the left, top, and right sides of the outer circumference of housing 14F. A second handle 16F is attached to output housing 141F and surrounds at least the left, top, and right sides of the outer circumference of housing 14F. A third handle 155F extends along first axis 101F and connects first handle 15F and second handle 16F.

[0113] The first and second handles 15F, 16F form a ring-shaped handle. The bottoms of the first and second handles 15F, 16F form first and second supports 156F, 157F, respectively. The first and second supports 156F, 157F extend beyond or are flush with the bottom surface of the housing 14F. When the impact wrench 100 is placed on the ground, the first and second supports 156F, 157F together form a support that supports the impact wrench 100.

[0114] The first and second handles 15F, 16F are arranged in a front-to-back direction and surround the left, upper, and right sides of the outer periphery of the housing 14F. Orthographically projected along the first axis 101F, the first and second handles 15F, 16F substantially completely overlap. The first and second handles 15F, 16F serve as supports, allowing the impact wrench 100F to be placed on its side when placed on the ground. This also protects the impact wrench 100F and the DC power supply 30 from being dropped.

[0115] The first handle 15F, the second handle 16F and the third handle 155F provide the user with more comfortable alternative gripping positions. The first handle 15F, the second handle 16F and the third handle 155F are respectively provided with a curved gripping portion 151F.

[0116] like Figures 16 to 18 An impact wrench 100G according to another embodiment is shown. The impact wrench 100G is similar to the one described above with reference to FIG. Figures 1 to 3 Therefore, features and elements of the impact wrench 100G that correspond to features and elements of the impact wrench 100 are given like reference numerals followed by the letter "G." Furthermore, the following description primarily focuses on the differences between the impact wrench 100G and the impact wrench 100.

[0117] In this embodiment, the first handle 15G includes a connecting portion 158G and a gripping portion 151G extending along the third direction F3G, wherein one end of the gripping portion 151G is connected to the housing 14G through the connecting portion 158G, and the other end is a free end.

[0118] The first handle 15G is provided with a power switch 18G for turning the motor on and off; the switch is provided on the grip portion 151G.

[0119] In some embodiments, as Figure 16 As shown, the third direction F3G intersects the first axis 101G. The first handle 15G includes a first opening 152G for receiving fingers and a second opening 159G that separates the first handle from the housing. Figure 16 As shown, the opening direction X of the second opening 159G intersects the opening direction X of the first opening 152G. It can be understood that the opening direction X of the first opening 152G is perpendicular to the paper. In some embodiments, the opening direction X of the second opening 159G is perpendicular to the opening direction X of the first opening.

[0120] In some embodiments, as Figure 17 As shown, the connecting portion 158G' is connected to the motor housing 142G, and the connecting portion 158G' extends along the first axis 101G toward the rear of the motor housing 142G. The gripping portion 151G' extends along a third direction F3G toward both sides of the connecting portion 158G', and the third direction F3G intersects with the direction of the first axis 101G. Exemplarily, the third direction F3G is orthogonal to the first axis 101G. The gripping portion 151G' extends on both sides of the connecting portion 158G'. The power switch 18G is provided on the left or right side of the gripping portion 151G'. Exemplarily, the first handle 15G is T-shaped, having a laterally extended gripping portion 151G' for easy holding with both hands. The laterally extended gripping portion 151G' can be disassembled to form a straight handle, or one of the laterally extended gripping portions 151G' can be disassembled to form an L-shaped handle, or the first handle 15G can be rotated 90 degrees to make the laterally extended gripping portion 151G' face downward or upward, so that the impact tool 100G can be smaller in size.

[0121] The first handle 15G further includes an extension mechanism to be extendable and retractable, or the first handle 15G includes a folding mechanism to be foldable.

[0122] In some embodiments, as Figure 18 As shown, the connecting portion 158G" is connected to the motor housing 142G, and the connecting portion 158G" is disposed on the upper portion of the motor housing 142G. The gripping portion 151G" extends downward along a third direction F3G, which intersects the first axis 101G.

[0123] like Figures 20 to 21The figure shows a configuration of a second handle 16H of the impact wrench 100. The impact wrench 100 can be any one of 100, 100B, 100C, 100D, 100E, 100F, and 100G. This embodiment mainly focuses on the structure of the second handle 16H.

[0124] The second handle 16H also includes a connecting assembly 162H, which connects the grip 161H to the mounting portion 163H. The connecting assembly 162H includes a connecting seat 1628H, a first fastener 1629H, and a second fastener 1620H. The first fastener 1629H applies a force to the mounting portion 163H that radially contracts, increasing the friction between the mounting portion 163H and the housing 14 and pressing the mounting portion 163H against the housing 14. The mounting portion 163H is formed or connected to the connecting seat 1628H, and the first fastener 1629H is mounted on the connecting seat 1628H. The second fastener 1620H positions and connects the grip 161H to the connecting seat 1628H. A shock-absorbing pad 1625H is provided between the connecting seat 1628H and the second fastener 1620H. The shock-absorbing pad 1625H is disposed between the handle 161H and the connecting base 1628H. The handle 161H is generally U-shaped or semi-annular. The handle 161H includes a continuously arranged grip rod 1611H and a free end 1612H for connection. The free end 1612H of the handle 161H extends into the mounting groove 1635H of the connecting base 1628H. The shock-absorbing pad 1625H is disposed between the mounting groove 1635H and the free end 1612H of the handle 161H. In this embodiment, the shock-absorbing pads 1625H are disposed on the front and rear sides of the handle 161H, respectively, to enhance the shock-absorbing effect. When the impact assembly of the impact wrench applies an impact force to the output shaft, the collision between the impact block and the anvil generates relatively large vibrations. The second handle 16H is installed on the output housing 141. To ensure the vibration reduction effect, on the one hand, the handle 161H and the connecting seat 1628H are designed to be separated to disconnect the vibration transmission path for vibration reduction. On the other hand, a shock-absorbing pad is added between the handle 161H and the connecting seat 1628H to eliminate vibration.

[0125] In this embodiment, first fasteners 1629H apply force to mounting portion 163H in the left-right direction, radially tightening mounting portion 163H. Exemplarily, first fasteners 1629H are bolts, mounted on the left and right ends of mounting portion 163H, respectively. Through a threaded structure, they radially tighten mounting portion 163H, causing mounting portion 163H to contract and press against output housing 141. Second fasteners 1620H extend along first axis 101H, passing through connecting base 1628H and free end 1612H of handle 161H. Exemplarily, second fasteners 1620H are bolts, mounted on the free ends 1612H of handle 161H, respectively. Through a threaded structure, they secure connecting base 1628H and handle 161H.

[0126] In some embodiments, the first fastener 1629H and the second fastener are combined into a single first fastener 1629H. In this embodiment, a fixing member 1613H is formed or connected to the free end 1612H of the grip 161H, connecting the free end 1612H of the grip 161H to the connecting base 1628H. The first fastener 1629H penetrates the mounting portion 163H, the connecting base 1628H, and the fixing member 1613H, thereby connecting the second handle 16H to the housing 14. Shock-absorbing pads 1625H are disposed between the fixing member 1613H and the connecting base 1628H of the grip 161H. Optionally, the first fastener 1629H extends in a left-right direction, with the shock-absorbing pads 1625H disposed on both sides of the fixing member 1613H of the grip 161H. First fastener 1629H is a bolt that radially tightens mounting portion 163H via a threaded structure, contracting and pressing mounting portion 163H against output housing 141. Simultaneously, the threaded structure locks connector 1628H and handle 161H. Exemplarily, a mating stop is provided between connector 1628H and fixture 1613H. The stop locates connector 1628H and fixture 1613H in their respective mounting positions, and first fastener 1629H locks fixture 1613H and handle 161H in place.

[0127] like Figures 22 to 23 A second handle 16J is shown according to another embodiment. The second handle 16J is similar to the one described above with reference to FIG. Figure 20 Therefore, features and elements of the second handle 16J that correspond to features and elements of the second handle 16H are given like reference numerals followed by the letter "J." Furthermore, the following description primarily focuses on the differences between the second handle 16J and the second handle 16H.

[0128] The second handle 16J includes a grip 161J, a connecting assembly 162J, and a mounting portion 163J. The connecting assembly 162J includes a support tube 1621J, an operating member 1622J, and a third fastener 164J. The support tube 1621J serves as the main housing, with a storage space provided within it. The operating member 1622J is at least partially disposed outside the support tube 1621J, and the third fastener 164J is at least partially disposed within the storage space. The grip 161J and the mounting portion 163J are respectively connected to the support tube 1621J. The third fastener 164J secures the mounting portion 163J to the housing 14 and the grip 161J to the mounting portion 163J. The third fastener 164J includes a shock-absorbing pad 1625J, which is disposed between the support tube 1621J and the grip 161J.

[0129] Illustratively, the third fastener 164J includes a latch 1624J, a nut 1627J, and a spring 1623J. An operating member 1622J is connected to one end of a support tube 1621J, and a nut 1627J is attached to the interior of the operating member 1622J. One end of the latch 1624J is connected to and extends through the support tube 1621J, while the other end of the latch 1624J is connected to the nut 1627J. The handle 161J is disposed within the support tube 1621J. The support tube 1621J has two slots, and the two ends of the mounting portion 163J extend through the slots and are each mounted on the latch 1624J. The mounting portion 163J is also located on either side of the handle 161J. A spring 1623J is disposed on each side of the handle 161J, with one end of each spring abutting the handle 161J and the other end abutting the mounting portion 163J. A shock-absorbing pad 1625J is provided between the spring 1623J and the mounting portion 163J. Optionally, one end of the spring 1623J abuts the handle 161J, while the other end abuts the shock-absorbing pad 1625J. In this embodiment, the shock-absorbing pads 1625J are provided on three sides of the handle 161J to achieve a better shock absorption effect. A compression spring is used to generate pressure to secure the handle 161J.

[0130] Mounting portion 163J is tightened as follows: During rotation of operating member 1622J, threaded latch 1624J engages nut 1627J on operating member 1622J, causing operating member 1622J to press inward against mounting portion 163J, thereby compressing spring 1623J. Mounting portion 163J is tightened by the combination of the spring force and the pressure generated by the rotating threads. Shock absorber 1625J and spring 1623J work together to dampen vibrations in grip 161J.

[0131] The outer side of the housing 14 and the inner side of the mounting portion 163J are each provided with a limiting boss 1631J and a limiting groove, respectively. The limiting boss 1631J is arranged in the limiting groove to prevent the mounting portion 163J and the housing 14 from rotating circumferentially.

[0132] In some embodiments, the handle 161J is rotatably connected to the housing 14 around the fourth axis 103J, and the mounting portion 163J is positioned and connected to the housing 14. Optionally, the fourth axis 103J intersects the first axis 101J. Optionally, the fourth axis 103J is perpendicular to the first axis 101J.

[0133] like Figures 24 to 26 The impact wrench 100 is shown as a handheld power tool, and includes a motor housing 142K. The impact wrench 100 can be any of the impact wrenches 100, 100B, 100C, 100D, 100E, 100F, and 100G. This embodiment primarily focuses on the structure of the motor housing 142K.

[0134] The motor housing 142K includes a front cover housing 117K and a rear cover housing 113K. The length direction of the front cover housing 117K basically extends along the first axis 101K of the motor 11. The front cover housing 117K accommodates at least part of the motor 11. The rear cover housing 113K is installed to the end of the front cover housing 117K away from the output shaft, that is, the rear cover housing 113K is installed to the rear end of the front cover housing 117K. A first bearing seat 1132K is formed or connected to the inner side of the rear cover housing 113K. The first bearing seat 1132K is used to support the bearing of the drive shaft away from the output shaft end, that is, the first bearing seat 1132K is used to support the first bearing at the rear end of the motor 11. An accommodating space is formed on the outer side surface of the rear cover housing.

[0135] The circuit board assembly includes a circuit board 511K and an aluminum substrate 512K. The circuit board 511K is used to control the operation of the motor 11. The circuit board assembly is housed within the housing. The rear cover housing 113K also functions as a circuit board compartment, eliminating the need for a circuit board compartment and reducing the size of the impact wrench. Specifically, this shortens the axial dimension of the impact wrench 100. For handheld power tools that incorporate a circuit board within the power supply mounting area, this reduces the overall height from the power supply mounting area to the housing.

[0136] Exemplarily, the rear cover housing 113K extends radially along the axis of the motor 11 to cover the opening at the rear end of the front cover housing 117K. The rear cover housing 113K includes an inner side and an outer side. It can be understood that the inner side of the rear cover housing 113K is the side opposite to the opening of the front cover housing 117K. Since the rear cover housing 113K is mounted to the rear end of the front cover housing 117K, the first bearing is the rear bearing of the motor 11, which is used to support the rotational movement of the rear end of the motor 11. The circuit board 511K is fixed on the aluminum substrate 512K, and the two are connected together to the outer side of the rear cover housing 113K. In this embodiment, a second cover body (not shown) is also connected to the rear end of the rear cover housing 113K to cover the opening on the outer side of the rear cover housing 113K, so that the rear cover housing 113K forms a complete shape.

[0137] Motor 11 includes a fan 114K, a stator 115BK, and a rotor assembly 116K. During assembly, stator 115BK is mounted within front cover housing 117K and axially connected via a third fastener 118K. The inner wall of front cover housing 117K forms a first support position, providing circumferential support for stator 115BK. Rotor assembly 116K passes through stator 115BK, and the rotor shaft of rotor assembly 116K is connected to rear cover housing 113K via a first bearing. Rear cover housing 113K and front cover housing 117K are connected via a fourth fastener 119K. The third fastener 118K and fourth fastener 119K are circumferentially staggered. Front cover housing 117K and rear cover housing 113K are connected via bolts.

[0138] Fan 114K is connected to the inside of rear cover 113K, in front of the first bearing. Circuit board 511K and aluminum substrate 512K are attached to the outside of rear cover 113K. Heat dissipation bosses or fins 1131K are located inside rear cover 113K. Fan 114K dissipates heat from the conductive rear cover 113K, indirectly dissipating heat from circuit board 511K.

[0139] A gearbox is typically located between the motor 11 and the impact assembly 13. A second support is located on the side of the front cover housing 117K facing away from the rear cover housing 113K. The front cover housing 117K and the second support are bolted together or integrally formed. The second support is used to connect to the inner gear ring in the gearbox.

[0140] like Figure 27 The power tool combination and an auxiliary device are shown. The power tool can be any one of the impact wrenches 100, 100B, 100C, 100D, 100E, 100F, and 100G. This embodiment mainly focuses on the structure of the power tool combination and the auxiliary device.

[0141] This embodiment provides a power tool combination, such as Figures 27 to 30As shown, the power tool includes a power tool such as an impact wrench 100, 100B, 100C, 100D, 100E, 100F, 100G, an auxiliary device 200 and a power supply 300. For convenience of reference, the power tool is, for example, an impact wrench 100.

[0142] The power supply 300 provides power to at least one of the impact wrench 100 and the auxiliary device 200. In this embodiment, the power supply 300 is a DC power supply. Optionally, the DC power supply is a battery pack 30, which, in conjunction with corresponding power supply circuits, powers the electrical components of the power tool assembly. Those skilled in the art will appreciate that the power supply is not limited to the battery pack 30 and can also be powered by mains electricity, an AC power supply, or a combination of mains electricity and the battery pack 30, in conjunction with corresponding rectification, filtering, and voltage regulation circuits to power various circuit components.

[0143] In this embodiment, the impact wrench 100 is a handheld power tool. Optionally, the handheld power tool is a high-output torque power tool. Optionally, the output shaft 121J of the high-output torque impact wrench 100 can output at least 1500 N·m of torque to complete the intended operation of the impact wrench 100, such as removing or installing fasteners. The structure of the impact wrench 100 has been described above and will not be further elaborated here.

[0144] like Figures 27 to 29 As shown, the auxiliary device 200 includes a mechanical arm 21 and a walking mechanism 22 . The mechanical arm 21 is connected to the impact wrench 100 . The mechanical arm 21 is configured to adjust the impact wrench 100 to a preset position. The mechanical arm 21 is supported by the walking mechanism 22 .

[0145] Because power tools with high output torque are very heavy, especially for handheld power tools such as the impact wrench 100, it is necessary to move the impact wrench 100 near the workpiece to complete the work, which is time-consuming and labor-intensive. By coupling the impact wrench 100 to the auxiliary device 200, the walking mechanism 22 can move the impact wrench 100 roughly to the target position without manual handling and lifting, thereby achieving rapid movement of the impact wrench 100. The mechanical arm 21 can adjust the impact wrench 100 to a preset position to align with the workpiece and to disassemble and assemble fasteners on the workpiece. With the help of the walking mechanism 22 and the mechanical arm 21, the impact wrench 100 is supported and adjusted for alignment, which reduces the difficulty of operation and the workload of the staff, thereby improving work efficiency.

[0146] Therefore, in some embodiments, the power tool may also be other handheld power tools weighing more than 5 kg, such as a hair dryer, a blower-vacuum machine, an air blaster, an angle drill, a work light, etc.

[0147] The robotic arm 21 includes a first movable assembly 211 and a second movable assembly 212, which are interconnected. One of the first movable assembly 211 and the second movable assembly 212 is supported by the traveling mechanism 22, and the output end of the other is connected to the impact wrench 100. In this embodiment, the first movable assembly 211 drives the impact wrench 100 to move, while the second movable assembly 212 drives at least rotation of the impact wrench 100. The robotic arm 21 has multiple degrees of freedom, which enhances the flexibility of the impact wrench 100 connected to the actuator end of the robotic arm 21 and facilitates the operator's operation to align the impact wrench 100 with the fastener. In one embodiment, the first movable assembly 211 is supported by the traveling mechanism 22, the second movable assembly 212 is connected to the output end of the first movable assembly 211, and the impact wrench 100 is connected to the output end of the second movable assembly 212. The first movable assembly 211 drives the second movable assembly 212 and the impact wrench 100 to move, while the second movable assembly 212 drives the impact wrench 100 to rotate. In another embodiment, the second moving assembly 212 is supported on the walking mechanism 22, the first moving assembly 211 is connected to the output end of the second moving assembly 212, the impact wrench 100 is connected to the output end of the first moving assembly 211, the second moving assembly 212 drives the first moving assembly 211 and the impact wrench 100 to rotate, and the first moving assembly 211 drives the impact wrench 100 to move.

[0148] In one embodiment, the first movable assembly 211 drives the impact wrench 100 upward and downward, while the second movable assembly 212 has multiple joint structures to drive the impact wrench 100 to rotate about multiple different centerlines. In one embodiment, the second movable assembly 212 provides at least two degrees of freedom of rotation, such as left-right rotation about a vertical centerline and up-and-down rotation about a horizontal centerline, or left-right rotation about two vertical centerlines and up-and-down rotation about a horizontal centerline.

[0149] The robotic arm 21 also includes a support frame 213, which is supported and connected to the walking mechanism 22. The first moving assembly 211 and the second moving assembly 212 are connected to the support frame 213. The first moving assembly 211, the second moving assembly 212 and the support frame 213 each include at least one drive motor 2111 for driving the first moving assembly 211 and the second moving assembly 212. The provision of the drive motor 2111 enables automatic drive, reducing the workload of the operator.

[0150] In one embodiment, the first moving assembly 211 includes a drive motor 2111, a lead screw 2112, and a lead screw nut that cooperates with the lead screw 2112. The drive motor 2111 and the lead screw 2112 are disposed on a support frame 213. The lead screw 2112 is disposed in a vertical direction. The drive motor 2111 drives the lead screw 2112. The impact wrench 100 is directly or indirectly connected to the lead screw 2112 and the nut via the second moving assembly 212 to achieve lifting. In another embodiment, the first moving assembly 211 can be a linear drive structure such as a hydraulic cylinder, a pneumatic cylinder, or a linear motor 11J to achieve lifting of the impact wrench 100.

[0151] In one embodiment, the second movable assembly 212 includes a support base 2121, an elastic member 2124, a first hinged rod 2122 hinged to the support base 2121, and a second hinged rod 2123 hinged to the first hinged rod 2122. The support base 2121 is connected to the output end of the first movable assembly 211. The elastic member 2124 connects the first hinged rod 2122 and the support base 2121. The first hinged rod 2122 rotates about a horizontal centerline, and the second hinged rod 2123 rotates about a vertical centerline. The impact wrench 100 is connected to the second hinged rod 2123. The first hinged rod 2122 and the second hinged rod 2123 can be manually pushed, thereby manually rotating the impact wrench 100. The second hinged rod 2123 is provided with a hook 214. The impact wrench 100 is provided with a lifting ring 17. The lifting ring 17 is hung on the hook 214 to facilitate the removal and assembly of the impact wrench 100 from the auxiliary device 200. In other embodiments, the second moving assembly 212 can also be a multi-link mechanism, with the impact wrench 100 connected to the output end of the multi-link mechanism, and the multi-link mechanism is driven by the driving structure. In some embodiments, the second hinged rod 2123 is provided with a manipulator to actively grasp the lifting ring of the impact wrench 100.

[0152] The robotic arm 21 can also be a multi-degree-of-freedom robotic arm such as a six-degree-of-freedom robotic arm or a four-degree-of-freedom robotic arm in the prior art. It is directly mounted on or mounted on the walking mechanism 22 through the support frame 213, and the impact wrench 100 is completely aligned by the driving motor 2111.

[0153] The walking mechanism 22 includes a walking wheel group 221, a base 222 and a walking motor 223. The walking wheel group 221 is rotatably connected to the base 222. The robotic arm 21 is supported on the base 222. The walking motor 223 drives the walking wheel group 221 to rotate, thereby realizing automatic walking of the walking mechanism 22. The walking mechanism 22 also includes a transmission mechanism. The walking motor 223 is connected to the walking wheel group 221 through the transmission mechanism. The walking wheel group 221 includes a plurality of walking wheels. The walking wheels are rotatably connected to the base 222 through a wheel axle. The walking motor 223 drives the wheel axle to rotate through the transmission mechanism. The transmission mechanism is, for example, a gear transmission mechanism. When the distance between the wheel axle and the motor shaft 111 is large, a belt transmission mechanism or a chain transmission mechanism can be used for transmission connection. In other embodiments, an armrest can also be provided on the auxiliary device 200. The handrail can be held to manually push the auxiliary device 200 to walk.

[0154] The walking wheel group 221 includes a front wheel 2211 and a rear wheel 2212. The walking motor 223 drives the rear wheel 2212. The front wheel 2211 is a steering wheel with a steering function. It can be controlled manually, remotely, automatically controlled by pre-setting the walking route, or track controlled. For example, for some more regular disassembly and assembly conditions, the path can be pre-set to achieve self-walking and self-positioning. Please refer to the existing technology and will not repeat them. The front wheel 2211 is a universal wheel with a self-locking function. The walking mechanism 22 also includes a speed regulating component 224 added to the armrest. The speed regulating component 224 is configured to adjust the walking speed of the walking wheel group 221. Please refer to the existing technology and will not repeat them.

[0155] The power tool assembly also includes a control assembly. The impact wrench 100 and auxiliary device 200 are respectively communicatively connected to the control assembly, thereby enabling automatic control of the impact wrench 100 and the auxiliary device 200. For example, the control includes controlling the start, stop, speed, and direction of the motor 11, controlling the robotic arm 21 to drive the power tool to a preset position, and controlling the travel speed and direction of the travel mechanism 22. The control assembly includes a controller, which utilizes a dedicated control chip, such as a single-chip microcomputer or a microcontroller unit (MCU).

[0156] The power tool combination also includes a human-computer interaction panel 29, which is communicatively connected to the control component. The human-computer interaction panel 29 can display the current operating parameters of the power tool combination, such as the parameters of the motor 11 or the parameters of the walking mechanism 22 or the parameters of the robotic arm 21, etc., which is convenient for viewing and understanding the current usage. CNC programming can also be performed through the human-computer interaction panel 29, such as setting the walking route of the walking mechanism 22, setting the parameters of the speed control component 224 to adjust the walking speed of the walking wheel group 221 and other walking parameters and the air pressure of the walking wheel.

[0157] The auxiliary device 200 also includes a frame assembly 23, which is located on the rear side of the robot arm 21. The frame assembly 23 forms a storage space for storing accessories of a power tool or power tool combination. For example, an impact wrench 100 can be stored in the storage space, removed from the storage space when in use, and stored when not in use.

[0158] The auxiliary device 200 also includes a storage box 24, which is arranged in the storage space. The storage box 24 can store small tools such as sockets and gloves for easy access, and the small tools are separated from the first power supply 31 and the impact wrench 100 by the storage box 24 to avoid confusion and facilitate management.

[0159] In this embodiment, the power supply 300 includes a first power supply 31 and a second power supply 32. The first power supply 31 is configured to power the robotic arm 21 and / or the travel mechanism 22, while the second power supply 32 is configured to power the impact wrench 100. In some embodiments, the power supply 300 can also be powered by a single power supply located on either the auxiliary device 200 or the impact wrench 100. The first power supply 31 is located in the storage space and includes at least one battery pack 30. The storage space is also equipped with a charger 26, which is configured to charge the battery packs 30. The second power supply 32 is a DC power supply 30 located on the impact wrench 100 and includes at least one battery pack 30. The charger 26 can also charge the battery packs 30 of the second power supply 32. The charger 26 has two dual-pack charging ports, capable of charging four 5.0Ah battery packs 30 at a time, improving charging efficiency. The human-machine interface panel 29 also displays the remaining charge of the battery packs 30.

[0160] The auxiliary device 200 also includes a lamp 27 for providing illumination. The lamp 27 can be mounted on top of the robotic arm 21 to provide a wide illumination range, or it can be mounted on top of the frame assembly 23 or on the front side of the robotic arm 21. The lamp 27 has a rotatable or elevating base to adjust the illumination range of the lamp 27. The brightness of the lamp 27 can be adjusted, and the lamp 27 is powered by a power supply 300.

[0161] The auxiliary device 200 also includes an air pump 28, which is configured to be used for inflation, such as inflating the running wheel assembly 221 of the running mechanism 22, or inflating the wheel assembly of some vehicle tools. After the running wheel of the running wheel assembly 221 is replaced or used for a long time, the air pump 28 inflates it. The air pump 28 is equipped with an air pressure display to prevent over-inflation or under-inflation.

[0162] The storage space is divided into multiple layers to facilitate the storage and management of items. Exemplarily, the storage space is divided into three layers. The first layer is equipped with a storage box 24. Accordingly, a door 231 is provided on the top of the frame assembly 23 to facilitate the taking and placing of items. A charger 26 is placed on the second layer of the partition, and an impact wrench 100 can also be placed. The third layer of the partition is provided with a first power supply 31 and an air pump 28. A door 231 is provided on the side of the frame assembly 23 to facilitate the taking and placing of the impact wrench 100, the charger 26 and the air pump 28. Each layer can also be provided with multiple vertical boards to form compartments to separate different structures and avoid interference.

[0163] The outer surface coverings of the mechanical arm 21 and the frame assembly 23 of the auxiliary device 200 are all painted to prevent rust, improving the appearance and corrosion resistance. For example, the outer cover of the frame assembly 23 is provided with a protective cover 232, and the surface of the protective cover 232 is painted.

[0164] In one embodiment, the auxiliary device 200 has a length greater than or equal to 700 mm, a width greater than or equal to 1500 mm (the expanded width, excluding the mounted power tool, is 957 mm), and a height greater than or equal to 900 mm. For example, its dimensions are 805 mm × 1716 mm × 1270 mm, and the armrest height from the ground is greater than or equal to 850 mm. The first movable assembly 211 drives the impact wrench 100 to a height range of 180 mm to 1000 mm. The armrest width is 500 mm, the impact wrench 100 has a lifting stroke range of 0 to 810 mm, and the air pump 28 has a pressure range of 0 to 12 bar. In some embodiments, the dimensions of the auxiliary device 200 are adjusted according to different working conditions.

[0165] This embodiment also provides a power tool combination, such as Figure 30 As shown, it is Figure 29 The difference is that the auxiliary device 200 also includes a storage box 25, which is detachably connected to the frame assembly 23 and is located outside the storage space. It can be installed on the top or side of the frame assembly 23 to store small tools, etc., thereby increasing the storage space.

[0166] 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 power tool combination, comprising a power tool and an auxiliary device, characterized in that: The power tool comprises: a motor configured to provide power; an output portion configured to output power; Auxiliary devices, including: a mechanical arm connected to the power tool, the mechanical arm being configured to adjust the power tool to a preset position; a walking mechanism, configured to support the robotic arm; The power tool assembly further includes a power supply, which supplies power to at least one of the power tool and the auxiliary device.

2. The power tool assembly according to claim 1, characterized in that: The robotic arm includes a first moving component and a second moving component connected to each other, one of the first moving component and the second moving component is supported on the walking mechanism, and the output end of the other is connected to the power tool. The first moving component drives the power tool to move, and the second moving component at least drives the power tool to rotate.

3. The power tool assembly according to claim 2, characterized in that: The robotic arm also includes a support frame, which is supported and connected to the walking mechanism, the first moving component and the second moving component are connected to the support frame, and the first moving component, the second moving component and the support frame include at least one drive motor, and the drive motor is configured to drive the first moving component and the second moving component.

4. The power tool assembly according to claim 2, characterized in that: The second moving component provides rotational motion with at least two degrees of freedom.

5. The power tool assembly according to claim 1, characterized in that: The walking mechanism includes a walking wheel group, a base and a walking motor. The walking wheel group is rotatably connected to the base, the mechanical arm is supported by the base, and the walking motor drives the walking wheel group to rotate.

6. The power tool assembly according to claim 5, characterized in that: The traveling wheel group includes a front wheel and a rear wheel, the traveling motor drives the rear wheel, and the front wheel is a steering wheel.

7. The power tool assembly according to claim 6, characterized in that: The front wheels are universal wheels.

8. The power tool assembly according to claim 5, characterized in that: The walking mechanism further includes a transmission mechanism, and the walking motor is connected to the walking wheel set via the transmission mechanism.

9. The power tool assembly according to claim 5, characterized in that: The traveling mechanism further comprises a speed regulating assembly, and the speed regulating assembly is configured to regulate the traveling speed of the traveling wheel set.

10. The power tool assembly according to claim 1, wherein: The auxiliary device further comprises a frame assembly, wherein the frame assembly forms a storage space.

11. The power tool assembly according to claim 10, wherein: The power supply includes a first power supply, which is arranged in the storage space; and / or the power tool can be stored in the storage space; and / or the auxiliary device also includes a storage box, which is arranged in the storage space; and / or the auxiliary device also includes a storage box, which is detachably connected to the frame assembly and is located outside the storage space.

12. The power tool assembly according to claim 10, wherein: The power supply includes a first power source, which includes at least one battery pack. The storage space is equipped with a charger, which is configured to charge the battery pack.

13. The power tool assembly according to claim 1, wherein: The power supply includes a first power supply and a second power supply. The first power supply is configured to supply power to the robotic arm and / or the walking mechanism, and the second power supply is configured to supply power to the power tool.

14. The power tool assembly according to claim 1, wherein: The auxiliary device further includes a lighting lamp and / or an air pump, and the air pump is configured to be used for inflation.

15. The power tool assembly according to claim 1, wherein: It also includes a control component, and the power tool and the auxiliary device are respectively connected to the control component for communication.

16. The power tool assembly according to claim 15, characterized in that: It also includes a human-computer interaction panel, which is communicatively connected with the control component.

17. An auxiliary device for assisting a power tool in changing its position, characterized in that: The power tool includes a prime mover and an output portion, wherein the prime mover provides power to the output portion; The auxiliary device comprises: a mechanical arm connected to the power tool, the mechanical arm being configured to adjust the power tool to a preset position; A walking mechanism, used for supporting the robotic arm; At least one of the auxiliary device and the power tool includes a power supply, and the power supply includes a battery pack.

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