Electric handle and electric tool

Abstract

The application discloses an electric handle and an electric tool, and relates to the technical field of electric tools. The electric handle comprises a main body structure, a rotating driving part, a clamping part, and a locking mechanism. The rotating driving part comprises a rotating output shaft, and a first shaft section of the rotating output shaft is protrusively arranged at one end of the main body structure. The clamping part is slidably arranged in a containing groove in the first shaft section along the axial direction of the rotating output shaft. The clamping part comprises a second clamping cavity and a second clamping arm located at the side of the second clamping cavity. A second clamping part of the second clamping arm is protrusively arranged relative to the opening of the containing groove. An inner wall of the containing groove near one end of the opening is provided with a third inclined surface. A side of the second clamping part away from the second clamping cavity is provided with a fourth inclined surface consistent with the inclined direction of the third inclined surface. The locking mechanism is configured to drive the clamping part to shrink into the containing groove, and to make the third inclined surface extrude the fourth inclined surface to move in the direction close to the second clamping cavity. The electric handle provided by the application can reduce the axial dimension of the electric handle.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510660276.0, filed on May 21, 2025, entitled "A Multifunctional Handheld Electric Grinder and Electric Screwdriver Device", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of power tool technology, and more particularly to an electric handle and power tool. Background Technology

[0004] Handheld power tools are widely used in modern production and daily life, making it convenient for users to perform operations such as grinding and screwing.

[0005] In related technologies, the working head of handheld power tools is usually connected to the motor shaft through a coupling or other structure, which results in a large axial dimension of the handheld power tool. Utility Model Content

[0006] This application provides an electric handle and power tool to reduce the axial dimension of the electric handle and achieve portability.

[0007] In a first aspect, this application provides an electric handle, comprising: Main structure; A rotary drive is disposed in the main structure. The rotary drive includes a rotary output shaft. A first shaft segment of the rotary output shaft passes through the main structure and protrudes from one end of the main structure. The first shaft segment is provided with a first clamping cavity and a first clamping arm located on the periphery of the first clamping cavity. The outer peripheral wall of the first clamping arm away from the main structure is provided with a first inclined surface. The first inclined surface gradually slopes from the end close to the main structure to the end away from the main structure towards the side close to the first clamping cavity. A locking mechanism is disposed around the periphery of the first shaft segment and is detachably connected to the first shaft segment. The inner wall of the locking mechanism facing the first shaft segment is provided with a second inclined surface. The inclination direction of the second inclined surface is consistent with the inclination direction of the first inclined surface. The second inclined surface is configured to press the first inclined surface towards the direction close to the first clamping cavity when the locking mechanism is connected to the first shaft segment.

[0008] Secondly, this application provides an electric handle, comprising: Main structure; A rotary drive component is disposed in the main structure. The rotary drive component includes a rotary output shaft. A first shaft segment of the rotary output shaft passes through the main structure and protrudes from one end relative to the main structure. A receiving groove is disposed in the first shaft segment. The opening of the receiving groove is located at the end of the first shaft segment away from the main structure. A third inclined surface is disposed on the inner wall of the receiving groove near the opening end. The third inclined surface gradually slopes away from the central axis of the receiving groove from the end near the main structure to the end away from the main structure. A clamping member is slidably disposed in the receiving groove along the axial direction of the rotating output shaft. The clamping member includes a second clamping cavity and a second clamping arm located on the periphery of the second clamping cavity. One end of the second clamping arm protrudes relative to the opening and is configured as a second clamping part. A fourth inclined surface is disposed on the side of the second clamping part away from the second clamping cavity, which is in the same inclination direction as the third inclined surface. The locking mechanism is configured to cause the clamping member to retract into the receiving groove and to cause the third inclined surface to press the fourth inclined surface toward the direction of the second clamping cavity.

[0009] In some possible implementations, the clamping member includes at least two second clamping arms, which are arranged around the periphery of the second clamping cavity.

[0010] In some possible implementations, the locking mechanism includes a locking sleeve that is disposed around the periphery of the first shaft segment and is detachably connected to the first shaft segment; The inner wall of the locking sleeve at the end away from the main structure is provided with a pushing part, which is configured to push the clamping member when the locking sleeve is connected to the first shaft segment, so that the clamping member retracts into the receiving groove.

[0011] In some possible implementations, a fifth inclined surface is provided on the side of the second clamping portion away from the second clamping cavity. The fifth inclined surface is located on the side of the fourth inclined surface away from the main structure. The fifth inclined surface gradually slopes from the end closer to the main structure to the end away from the main structure towards the second clamping cavity. The jacking part is configured as a second inclined surface with the same inclination direction as the fifth inclined surface.

[0012] In some possible implementations, the locking mechanism includes a first adapter sleeve, a gearbox, and a pusher, wherein one end of the first adapter sleeve is fitted around the periphery of the first shaft segment and is detachably connected to the main structure. The gearbox is located on the side of the first adapter sleeve away from the main structure. The gearbox includes an input shaft and an output shaft. When the locking mechanism is connected to the main structure, the input shaft is inserted into the second clamping cavity and clamped and fixed by the second clamping arm. The output shaft is located on the side of the gearbox away from the input shaft. The end of the output shaft away from the input shaft is configured to drive and connect to the workpiece. The pusher is connected to the periphery of the input shaft and is opposite to the side of the clamping member that is away from the main structure. The pusher is configured to push the clamping member so that the clamping member retracts into the receiving groove.

[0013] In some possible implementations, the pusher is provided with a sixth inclined surface on the side facing the clamping member, the sixth inclined surface gradually tilting away from the input shaft from the end near the output shaft to the end away from the output shaft; The second clamping part is provided with a fifth inclined surface on the side away from the second clamping cavity. The fifth inclined surface is located on the side of the fourth inclined surface away from the main structure, and the inclination direction of the fifth inclined surface is consistent with the inclination direction of the sixth inclined surface.

[0014] In some possible implementations, the locking mechanism further includes a second adapter sleeve, which is disposed around the periphery of the output shaft and fixedly connected to the output shaft. The end of the second adapter sleeve away from the input shaft is provided with a quick-connect portion, which is configured to connect the workpiece.

[0015] In some possible implementations, the quick-connect portion is configured as a quick-connect slot, wherein the cross section of the quick-connect slot perpendicular to the output shaft axis is non-circular.

[0016] In some possible implementations, the locking mechanism further includes a first bearing sleeved on the periphery of the input shaft and located on the side of the pusher facing the output shaft; The first bearing is supported between the input shaft and the first adapter sleeve.

[0017] In some possible implementations, the locking mechanism includes an operating element and a transmission assembly, the operating element being movably disposed on the periphery of the main structure, and the transmission assembly being tractively connected between the clamping element and the operating element; The actuating element is configured to drive the transmission assembly to move, thereby causing the clamping element to extend or retract relative to the receiving groove.

[0018] In some possible implementations, the operating element is rotatably disposed around the periphery of the main structure; The transmission assembly includes a first adapter, a limiting member, and an elastic member. The first adapter is slidably sleeved on the outer periphery of the rotary output shaft along the axial direction of the rotary output shaft and is fixedly connected to the clamping member. A first limiting protrusion is provided on the side of the first adapter away from the rotary output shaft. The limiting member is slidably sleeved on the outer periphery of the first adapter along the axial direction of the rotary output shaft and is connected to the operating member in a transmission manner. The limiting member is located on the side of the first limiting protrusion away from the opening. The operating member is configured to drive the limiting member to move along the axial direction of the rotary output shaft to limit the position of the first limiting protrusion. The elastic element acts on the first adapter, and the elastic element is configured to drive the first adapter to cause the clamping member to retract into the receiving groove.

[0019] In some possible implementations, a second limiting protrusion is provided on the circumferential side of the rotary output shaft. The second limiting protrusion is located on the side of the first adapter facing the opening. The elastic member is arranged around the circumferential side of the rotary output shaft and abuts against the second limiting protrusion and the first limiting protrusion.

[0020] In some possible implementations, the operating member is provided with a first guide groove parallel to the axial direction of the rotary output shaft on the side facing the main structure, the main structure is provided with a spiral guide groove, and the limiting member is provided with an annular second guide groove on the side facing away from the first adapter. The transmission assembly also includes ball bearings, which are rotatably disposed in the first guide groove, the spiral guide groove, and the second guide groove.

[0021] In some possible implementations, the spiral guide groove is configured with a first end and a second end distributed along a first preset direction, the second end being located on the side of the first end opposite to the opening; The second end is also connected to a limiting groove, and the limiting member is used to restrict the movement of the ball towards the first end.

[0022] In some possible implementations, the transmission assembly further includes a second adapter and a pin. The second adapter is fixedly connected to one end of the clamping member away from the second clamping part. The rotary output shaft has an oblong hole with the long axis of the oblong hole parallel to the axial direction of the rotary output shaft. The pin is slidably inserted into the oblong hole and fixedly connected to the first adapter and the second adapter, respectively.

[0023] In some possible implementations, the locking mechanism further includes a second connecting sleeve, one end of which is connected to the end of the operating member facing the opening, and is disposed around the periphery of the main structure; The end of the second connecting sleeve away from the operating member is provided with an end plate opposite to the clamping member. The end plate has a first through hole that communicates with the second clamping cavity. When the third inclined surface separates from the fourth inclined surface, the clamping member abuts against the end plate or there is a gap between the clamping member and the end plate.

[0024] In some possible implementations, the end of the first shaft segment with the opening protrudes relative to the main structure, and the locking mechanism further includes a second bearing, which is sleeved on the outer periphery of the protruding part of the first shaft segment relative to the main structure and supported between the first shaft segment and the second connecting sleeve.

[0025] In some possible implementations, the rotary output shaft further includes a second shaft segment, which is integral with the first shaft segment; The rotary drive also includes a housing assembly, a stator, and a rotor. The housing assembly is fixedly disposed in the main structure, and the second shaft segment is rotatably mounted in the housing assembly. Both the rotor and the stator are disposed in the housing assembly. The rotor is disposed around the periphery of the second shaft segment and is fixedly connected to the second shaft segment. The stator is disposed around the periphery of the rotor at intervals and is fixedly connected to the housing assembly.

[0026] In some possible implementations, the housing assembly includes a housing, a first end cap, and a second end cap, the first end cap and the second end cap being disposed at opposite ends of the housing, the first end cap being located at the end of the housing facing the first shaft segment; The end of the second shaft segment facing the first shaft segment is rotatably connected to the first end cover via a third bearing, and the end of the second shaft segment away from the first shaft segment is rotatably connected to the second end cover via a fourth bearing.

[0027] In addition, this application also provides a power tool, including a workpiece and the electric handle provided in the above embodiments, wherein the workpiece is drively connected to the rotary output shaft.

[0028] The beneficial effects of this application are as follows: In the electric handle provided by this application, the clamping member is housed in the rotary output shaft of the rotary drive member, or the clamping member and the rotary output shaft are integrally formed (i.e., a first clamping cavity and a first clamping arm located on the periphery of the clamping cavity are provided in the first shaft segment of the rotary output shaft). This allows the clamping member and the rotary output shaft to at least partially overlap in the axial direction of the electric handle, thereby shortening the axial dimension of the electric handle and achieving portability. When the workpiece is mounted on the electric handle, the extension distance of the workpiece relative to the main structure can be significantly shortened, thereby improving the concentricity of the workpiece during operation and increasing the working accuracy. Furthermore, the significant frictional force between the rotary output shaft and the second clamping part through the third and fourth inclined surfaces (or by making the clamping member and the rotary output shaft an integral structure) reduces the probability of relative rotation between the clamping member and the rotary output shaft, achieving effective torque transmission. Simultaneously, it reduces vibration and noise generation, which is beneficial for the smooth operation of the power tool. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 Cross-sectional structural diagrams of the power tool portion structure are shown in some embodiments; Figure 2 A partial cross-sectional view of the power tool is shown in some embodiments when the locking sleeve is loosened; Figure 3 A cross-sectional structural schematic diagram of a power tool in some embodiments is shown; Figure 4 A partial cross-sectional structural schematic diagram of a power tool is shown in some embodiments; Figure 5 A cross-sectional structural schematic diagram of the electric handle in one state is shown in some embodiments; Figure 6 A cross-sectional structural schematic diagram of another state of the electric handle in some embodiments is shown; Figure 7 Schematic diagrams of the clamping components in some embodiments are shown; Figure 8 A cross-sectional structural schematic diagram of the power tool is shown in some other embodiments; Figure 9 A partial cross-sectional structural schematic diagram of the power tool is shown in some other embodiments; Figure 10A cross-sectional structural schematic diagram of the power tool is shown in some other embodiments; Figure 11 A partial cross-sectional structural schematic diagram of the power tool is shown in some other embodiments; Figure 12 A cross-sectional structural schematic diagram of the connection between the rotary output shaft and the first adapter is shown in some embodiments; Figure 13 A cross-sectional structural schematic diagram of the power tool portion structure is shown in some other embodiments; Figure 14 Exploded structural diagrams of the transmission component portion are shown in some other embodiments; Figure 15 A three-dimensional structural schematic diagram of a power tool is shown in some embodiments.

[0031] Explanation of key component symbols: 1000-Electric Handle; 100 - Main structure; 110 - First outer shell; 120 - Assembly shell; 121 - First structural section; 1211 - Spiral guide groove; 12111 - First end; 12112 - Second end; 12113 - Limiting groove; 122 - Second structural section; 130 - Power supply battery; 140 - Second outer shell; 150 - Circuit board; 200 - Rotary drive component; 210 - Housing assembly; 211 - Housing; 212 - First end cover; 213 - Second end cover; 221 - Rotor; 222 - Stator; 230 - Rotary output shaft; 231 - First shaft segment; 2311 - Receiving groove; 2312 - Opening; 2313 - Third inclined surface; 2314 - Second limiting protrusion; 2315 - Waist-shaped hole; 2316 - First clamping arm; 23161 - First clamping part; 23162 - First inclined surface; 2317 - First clamping cavity; 232 - Second shaft segment; 241 - Third bearing; 242 - Fourth bearing; 243 - Fifth bearing; 251 - Third end cover; 252 - Outer bushing; 300 - Clamping element; 310 - Second clamping cavity; 320 - Second clamping arm; 321 - Second clamping part; 3211 - Fourth inclined surface; 3212 - Fifth inclined surface; 400 - Locking mechanism; 410 - First locking mechanism; 411 - Locking sleeve; 4111 - Second through hole; 4112 - Pushing part; 41121 - Second inclined surface; 420 - Second locking mechanism; 421 - First connecting sleeve; 422 - Gearbox; 4221 - Gearbox; 4222 - Input shaft; 4223 - Output shaft; 423 - Pushing component; 4231 - Sixth inclined surface; 424 - First bearing; 425 - First adapter sleeve; 426 - Second adapter sleeve; 4261 - Quick-connect part; 430 - Third locking mechanism; 431 - Operating component; 4311 - First guide groove; 432 - Transmission assembly; 4321 - First adapter; 43211 - First limiting protrusion; 4322 - Limiting component; 43221 - Second guide groove; 4323 - Elastic component; 4324 - Second adapter; 4325 - Pin; 4326 - Retaining ring; 4327 - Ball bearing; 433 - Second connecting sleeve; 4331 - End plate; 4332 - First through hole; 434 - Second bearing; 2000 - Workpiece; M - First preset direction. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In related technologies, the grinding heads of power tools such as electric grinders are connected to the output shaft of the motor via couplings or other structures. This results in a large axial dimension of the entire power tool, making it inconvenient for users to carry, and also leads to low concentricity of the grinding head and low machining accuracy. This application provides a power tool that shortens its axial dimension, achieving portability, while simultaneously improving the concentricity of the workpiece and increasing machining accuracy.

[0038] Example 1 like Figure 1 and Figure 2 As shown in the embodiment, an electric tool is provided that can be used to perform electric operations, such as grinding the surface of a workpiece and drilling.

[0039] In this embodiment, the power tool may include a power handle 1000 and a workpiece 2000. The workpiece 2000 is tractively connected to the power handle 1000 and can be driven to rotate by the power handle 1000. The workpiece 2000 may be a grinding head or a drill bit.

[0040] In some embodiments, the electric handle 1000 may include a main structure 100, a rotary drive 200, and a locking mechanism 400. The main structure 100 includes a first housing 110. The rotary drive 200 may be disposed within the first housing 110. The rotary drive 200 includes a rotary output shaft 230, a first shaft segment 231 of which passes through the first housing 110 and protrudes from one end relative to the first housing 110.

[0041] In some embodiments, the first shaft segment 231 may be configured with a first clamping cavity 2317 and a first clamping arm 2316 located around the periphery of the first clamping cavity 2317. The first clamping arms 2316 may be provided in two, three, or four quantities as needed. Multiple first clamping arms 2316 may be arranged around the periphery of the first clamping cavity 2317. In some embodiments, a first clamping portion 23161 may be configured at the end of the first clamping arm 2316 away from the first housing 110. The first clamping portion 23161 has a first inclined surface 23162 disposed on the outer periphery of the first clamping cavity 2317, and the first inclined surface 23162 gradually slopes towards the side closer to the first clamping cavity 2317 from the end near the first housing 110 to the end away from the first housing 110. The first inclined surfaces 23162 on multiple first clamping arms 2316 may be on the same conical surface.

[0042] In some embodiments, the locking mechanism 400 may include a locking sleeve 411, which may be disposed around the periphery of the first shaft segment 231 and detachably connected to the first shaft segment 231. In some embodiments, the locking sleeve 411 has an internal thread on the side facing the first shaft segment 231, and the periphery of the first shaft segment 231 may be provided with an external thread adapted to the internal thread. Accordingly, the locking sleeve 411 and the first shaft segment 231 can be detachably connected via a threaded connection.

[0043] In other embodiments, the locking sleeve 411 and the first shaft segment 231 can be detachably connected by means of snap-fit ​​or screw connection.

[0044] In some embodiments, the inner wall of the locking sleeve 411 facing the first shaft segment 231 is provided with a second inclined surface 41121, and the inclination direction of the second inclined surface 41121 may be consistent with the inclination direction of the first inclined surface 23162. In an embodiment, the second inclined surface 41121 may be a conical surface. In addition, the end of the locking sleeve 411 away from the first housing 110 may have a second through hole 4111 that is opposite to and communicates with the first clamping cavity 2317, through which the workpiece 2000 can pass to be inserted into the first clamping cavity 2317.

[0045] In this embodiment, when the locking sleeve 411 is gradually tightened to the first shaft section 231, the second inclined surface 41121 can gradually abut against the first inclined surface 23162, and apply a force perpendicular to the axial direction of the rotating output shaft 230 to the first inclined surface 23162. As a result, the first clamping part 23161 can be pushed to move towards the first clamping cavity 2317, and gradually clamp the workpiece located in the first clamping cavity 2317.

[0046] In some embodiments, the main structure 100 further includes a power supply battery 130, which may be disposed in the first housing 110 and located on the side of the rotary drive 200 opposite to the locking sleeve 411. The power supply battery 130 may be electrically connected to the rotary drive 200.

[0047] In this embodiment, the rotary output shaft 230 of the rotary drive 200 integrates a first clamping cavity 2317 and a first clamping arm 2316, which can be used to clamp and fix the workpiece 2000. This eliminates the need for couplings and other related structures, shortens the axial dimension of the electric handle 1000, and achieves portability of the power tool.

[0048] Example 2 like Figure 3 , Figure 8 and Figure 10 As shown in the embodiment, an electric tool is provided that can be used to perform electric operations, such as removing and installing screws, grinding the surface of a workpiece, drilling, etc.

[0049] In some embodiments, the power tool may include a power handle 1000 and a workpiece 2000. The power tool may include a main body structure 100, a rotary drive 200, a clamping member 300, and a locking mechanism 400. The rotary drive 200 may be disposed within the main body structure 100. The rotary drive 200 may include a rotary output shaft 230 having a first shaft segment 231. The first shaft segment 231 may pass through the main body structure 100 and protrude from one end relative to the main body structure 100.

[0050] like Figures 3 to 6 As shown, in some embodiments, the first shaft segment 231 of the rotary output shaft 230 has a hollow structure and is provided with a receiving groove 2311. The opening 2312 of the receiving groove 2311 may be located at the end of the first shaft segment 231 away from the main structure 100. In addition, a third inclined surface 2313 may be provided on the inner wall of the receiving groove 2311 near the opening 2312. The third inclined surface 2313 may gradually slope away from the central axis of the receiving groove 2311 from the end near the main structure 100 to the end away from the main structure 100. In some embodiments, the third inclined surface 2313 may be a conical surface, and the larger opening end of the conical surface may be away from the end of the main structure 100, while the smaller opening end of the conical surface may be close to the end of the main structure 100.

[0051] In some embodiments, the clamping member 300 is slidably disposed in the receiving groove 2311 along the axial direction of the rotating output shaft 230, and one end of the clamping member 300 can pass through the opening 2312 and protrude from the end of the first shaft segment 231 opposite to the main body structure 100. In addition, the clamping member 300 can be telescopically disposed relative to the end of the receiving groove 2311 opposite to the main body structure 100.

[0052] In some embodiments, the clamping member 300 may include a second clamping cavity 310 and a second clamping arm 320 disposed around the periphery of the second clamping cavity 310. One end of the second clamping arm 320 may protrude from the end opposite to the main structure 100 relative to the opening 2312 and be configured as a second clamping portion 321, which can be used to provide a clamping action. A fourth inclined surface 3211 may be disposed on the side of the second clamping portion 321 opposite to the second clamping cavity 310, and the inclination direction of the fourth inclined surface 3211 may be consistent with the inclination direction of the third inclined surface 2313.

[0053] In some embodiments, the locking mechanism 400 may be configured to drive the clamping member 300 to retract into the receiving groove 2311 so that the third inclined surface 2313 presses the fourth inclined surface 3211 toward the direction of the second clamping cavity 310.

[0054] During use, when the clamping member 300 needs to provide a locking function, such as locking the workpiece 2000, one end of the workpiece 2000 can be inserted into the second clamping cavity 310. Then, the clamping member 300 can be driven to retract into the receiving groove 2311 by the locking mechanism 400. As the clamping member 300 retracts into the receiving groove 2311, the fourth inclined surface 3211 gradually abuts against the third inclined surface 2313, and the third inclined surface 2313 gradually presses against the fourth inclined surface 3211, causing the second clamping part 321 to move towards the second clamping cavity 310 to clamp the workpiece 2000 located in the second clamping cavity 310. Furthermore, the third inclined surface 2313 and the fourth inclined surface 3211 are tightly abutted, thereby generating a large frictional force between the third inclined surface 2313 and the fourth inclined surface 3211. When the rotary drive 200 is activated and the rotary output shaft 230 rotates, it can drive the clamping member 300 to rotate synchronously. In turn, the clamping member 300 can drive the workpiece 2000 to rotate synchronously to perform related operations. That is, the rotary drive 200 can drive the workpiece 2000 to rotate to perform related operations. When it is necessary to remove the workpiece 2000, the locking mechanism 400 can release the pushing action on the clamping member 300. The clamping member 300 can extend and retract relative to the receiving groove 2311, thereby allowing the third inclined surface 2313 to release the pressure on the fourth inclined surface 3211, and allowing the second clamping part 321 to open in the direction away from the second clamping cavity 310 so that the workpiece 2000 can be taken out from the second clamping cavity 310.

[0055] In the electric handle 1000 provided in this embodiment, the clamping member 300 is housed in the rotary output shaft 230 of the rotary drive member 200. This allows the clamping member 300 and the rotary output shaft 230 to at least partially overlap in the axial direction of the electric handle 1000, thereby shortening the axial dimension of the electric handle 1000 and making it portable, thus achieving portability of the power tool. When the workpiece 2000 is mounted on the electric handle 1000, the extension distance of the workpiece 2000 relative to the main structure 100 is significantly shortened, thereby improving the concentricity of the workpiece 2000 during operation and increasing operational accuracy. Furthermore, the significant frictional force between the rotary output shaft 230 and the second clamping part 321 through the third inclined surface 2313 and the fourth inclined surface 3211 reduces the probability of relative rotation between the clamping member 300 and the rotary output shaft 230, achieving effective torque transmission. Simultaneously, it reduces vibration and noise generation, which is beneficial for the smooth operation of the power tool.

[0056] Example 3 This embodiment provides a power tool, which, based on embodiment two, further includes: like Figures 3 to 7 As shown, in some embodiments, the main structure 100 may include a first outer shell 110. The rotary drive 200 also includes a housing assembly 210, a stator 222, and a rotor 221. The housing assembly 210 may include a housing 211, a first end cap 212, and a second end cap 213. The housing 211 may be a tubular structure with openings at both ends. The first end cap 212 and the second end cap 213 may be disposed at opposite ends of the housing 211, and the first end cap 212 may be fixedly connected to the housing 211 by means of integral connection, interference fit, bolt connection, or welding, and the second end cap 213 may be fixedly connected to the housing 211 by means of interference fit, bolt connection, or welding. In some embodiments, the housing assembly 210 may be fixed in the first outer shell 110 by means of screw connection, snap-fit, or structural limiting, and may be disposed near one end of the first outer shell 110.

[0057] In some embodiments, the rotary output shaft 230 further includes a second shaft segment 232. The second shaft segment 232 may be connected to one end of the first shaft segment 231 away from the opening 2312 of the receiving groove 2311, and is coaxially arranged with the first shaft segment 231. In some embodiments, the second shaft segment 232 may be integral with the first shaft segment 231.

[0058] In this embodiment, the second shaft segment 232 may be disposed in the housing assembly 210 and rotatably connected to the first end cover 212 and the second end cover 213. In some embodiments, the rotor 221 may be disposed around the periphery of the second shaft segment 232 and fixedly connected to the second shaft segment 232. The stator 222 may be disposed around the periphery of the rotor 221, and the stator 222 may be spaced apart from the rotor 221. In addition, the stator 222 may be fixedly connected to the housing 211. When the rotary drive 200 is started, the rotary output shaft 230 may rotate under the cooperation of the stator 222 and the rotor 221, and transmit the rotational power to the workpiece 2000 through the clamping member 300 to drive the workpiece 2000 to rotate. The workpiece may be any type of electric grinding head.

[0059] In some embodiments, the rotary drive 200 further includes a third bearing 241 and a fourth bearing 242. The third bearing 241 can be sleeved on the periphery of the second shaft segment 232 and located at the end of the second shaft segment 232 facing the first shaft segment 231, and the third bearing 241 can be supported between the second shaft segment 232 and the first end cover 212. That is, the end of the second shaft segment 232 facing the first shaft segment 231 can be rotatably mounted on the first end cover 212 through the third bearing 241. The fourth bearing 242 can be sleeved on the periphery of the end of the second shaft segment 232 away from the first shaft segment 231 and supported between the second shaft segment 232 and the second end cover 213, that is, the end of the second shaft segment 232 away from the first shaft segment 231 can be rotatably mounted on the second end cover 213 through the fourth bearing 242, which can ensure the stable operation of the rotary output shaft 230.

[0060] In some embodiments, the clamping member 300 may include at least two second clamping arms 320, which are disposed around the periphery of the second clamping cavity 310. Exemplarily, in some embodiments, the clamping member 300 may include two, three, or four equal numbers of second clamping arms 320, which may be disposed around the periphery of the second clamping cavity 310.

[0061] In some embodiments, the ends of the plurality of second clamping arms 320 facing the second shaft segment 232 can be connected as one unit, and the ends of the plurality of second clamping arms 320 away from the second shaft segment 232 can be separated from each other and can move relative to each other. That is, the second clamping portions 321 of each second clamping arm 320 can be brought close to each other to provide a clamping function, or they can be moved away from each other to release the workpiece 2000 and other structures in the second clamping cavity 310.

[0062] In some embodiments, the fourth inclined surface 3211 of the plurality of second clamping portions 321 on the side opposite to the second clamping cavity 310 may be located on the same conical surface.

[0063] In some embodiments, the electric handle 1000 may include a first locking mechanism 410. The first locking mechanism 410 may include a locking sleeve 411, which may be disposed around the periphery of the first shaft segment 231 and detachably connected to the first shaft segment 231. In some embodiments, the inner wall of the locking sleeve 411 facing the first shaft segment 231 may be provided with an internal thread, and the side of the first shaft segment 231 facing the locking sleeve 411 may be provided with an external thread, which may be adapted to the internal thread. A threaded connection may be achieved between the locking sleeve 411 and the first shaft segment 231 through the engagement of the internal and external threads.

[0064] In other embodiments, the locking sleeve 411 and the first shaft segment 231 can also be detachably connected by means of snap-fit ​​or screw connection.

[0065] In some embodiments, the locking sleeve 411 may have a second through hole 4111 at one end away from the main structure 100, which is opposite to and communicates with the second clamping cavity 310. The workpiece 2000 may pass through the second through hole 4111 and be inserted into the second clamping cavity 310.

[0066] In some embodiments, a pushing portion 4112 may be provided on the side of the locking sleeve 411 facing the clamping member 300. The pushing portion 4112 is configured such that when the locking sleeve 411 is connected to the first shaft segment 231, it presses the clamping member 300 to retract into the receiving groove 2311. That is, when the locking sleeve 411 and the first shaft segment 231 are gradually tightened and fixed, the pushing portion 4112 can push the clamping member 300 to retract into the receiving groove 2311, thereby allowing the third inclined surface 2313 to gradually press the fourth inclined surface 3211, so that the second clamping portion 321 gradually moves towards the second clamping cavity 310 and clamps the workpiece 2000 located in the second clamping cavity 310. When the locking sleeve 411 is gradually loosened relative to the first shaft section 231, the pushing part 4112 can cancel the pushing action on the clamping member 300. When the user pulls out the workpiece 2000, the clamping member 300 can be driven to extend out of the receiving groove 2311, and the fourth inclined surface 3211 can be separated from the third inclined surface 2313. The second clamping part 321 can open in the direction away from the second clamping cavity 310 so as to remove the workpiece 2000 from the electric handle 1000.

[0067] In some embodiments, a fifth inclined surface 3212 is further disposed on the side of the second clamping portion 321 away from the second clamping cavity 310. The fifth inclined surface 3212 may be located on the side of the fourth inclined surface 3211 away from the second shaft segment 232. The fifth inclined surface 3212 may gradually slope towards the second clamping cavity 310 from the end near the main body structure 100 to the end away from the main body structure 100. In some embodiments, the fifth inclined surfaces 3212 on the plurality of second clamping portions 321 may be located on the same conical surface.

[0068] In some embodiments, the inner wall of the locking sleeve 411 facing the clamping member 300 may be configured with a second inclined surface 41121 opposite to the clamping member 300, which may serve as a pushing portion 4112. The inclination direction of the second inclined surface 41121 may be consistent with the inclination direction of the fifth inclined surface 3212. In some embodiments, the second inclined surface 41121 may be a conical surface. As the locking sleeve 411 is gradually tightened onto the first shaft segment 231, the second inclined surface 41121 may gradually come into contact with the fifth inclined surface 3212 and compress the fifth inclined surface 3212. The second inclined surface 41121 may apply a force parallel to the axial direction of the rotating output shaft 230 to the fifth inclined surface 3212 and push the clamping member 300 to retract into the receiving groove 2311. In addition, the locking sleeve 411 can confine the clamping member 300 in the receiving groove 2311, ensuring a stable connection between the clamping member 300 and the rotary output shaft 230, and ensuring the smooth transmission of rotational power.

[0069] In other embodiments, the pusher 4112 may also be a structure such as a protrusion extending axially along the rotary output shaft 230.

[0070] In this embodiment, the locking sleeve 411 and the first shaft segment 231 are detachably connected via a threaded connection. When the locking sleeve 411 is locked to the first shaft segment 231, the fifth inclined surface 3212 gradually abuts against the second inclined surface 41121, and gradually pushes the clamping member 300 into the receiving groove 2311. This avoids the probability of rigid collision between the locking sleeve 411 and the clamping member 300, ensuring that the clamping member 300 retracts smoothly into the receiving groove 2311.

[0071] In some embodiments, the main structure 100 further includes a power supply battery 130. The power supply battery 130 may be disposed in the first housing 110 and located on the side of the rotary drive 200 opposite to the clamping member 300. The power supply battery 130 may be electrically connected to the rotary drive 200 and may supply power to the rotary drive 200. In some embodiments, the power supply battery 130 may be a rechargeable battery, and the power supply battery 130 may be connected to a charging interface, the insertion end of which may be exposed outside the first housing 110. In addition, the main structure 100 also includes a circuit board 150, on which an operating component may be integrated. The operating component may be a button group or a touch screen, etc., and the user may input operating commands such as power on / off, speed switching, rotation direction switching, and working mode switching through the operating component.

[0072] During operation, the rotary drive 200 can transmit rotational power to the workpiece 2000 through the rotary output shaft 230 to drive the workpiece 2000 to rotate at high speed and achieve grinding operation.

[0073] Example 4 This embodiment provides a power tool, which differs from Embodiment 3 in the following ways: like Figure 8 and Figure 9 As shown, in some embodiments, the electric handle 1000 includes a second locking mechanism 420. The second locking mechanism 420 may include a first adapter sleeve 425, a reduction gearbox 422, and a pusher 423. When the second locking mechanism 420 is connected to the main structure 100, the first adapter sleeve 425 may be arranged around the periphery of the first shaft segment 231. The end of the first adapter sleeve 425 facing the main structure 100 may be detachably connected to the main structure 100 by means of a threaded connection. Specifically, the inner wall of the first adapter sleeve 425 facing the first shaft segment 231 is provided with an internal thread. The side of the main structure 100 facing the first shaft segment 231 is provided with an external threaded post, which is adapted to the internal thread on the first adapter sleeve 425. Accordingly, the first adapter sleeve 425 may be detachably connected to the main structure 100 by means of a threaded connection. In addition, the first adapter sleeve 425 may be spaced apart from the first shaft segment 231.

[0074] In other embodiments, the first adapter sleeve 425 may also be detachably connected to the main structure 100 by means of snap-fit ​​or screw connection.

[0075] In some embodiments, the reduction gearbox 422 may include a gearbox 4221, an input shaft 4222, and an output shaft 4223. One end of the gearbox 4221 may be fixedly connected to the end of the first adapter sleeve 425 away from the main structure 100 by welding, snap-fitting, or screw connection. One end of the input shaft 4222 may be connected to the input end of the gearbox 4221. In some embodiments, the input shaft 4222 may be connected to the input end of the gearbox 4221 via a key or spline. The input shaft 4222 may be positioned on the side of the gearbox 4221 facing the first adapter sleeve 425 and pass through the first adapter sleeve 425. When the second locking mechanism 420 is connected to the main structure 100, the input shaft 4222 may be inserted into the second clamping cavity 310 of the clamping member 300.

[0076] In some embodiments, the output shaft 4223 may be connected to the output end of the gearbox 4221. The output shaft 4223 may be located on the side of the gearbox 4221 opposite to the input shaft 4222. In one embodiment, the end of the output shaft 4223 away from the gearbox 4221 may be configured to connect to the workpiece 2000 and transmit rotational power.

[0077] In some embodiments, the second locking mechanism 420 further includes a second adapter sleeve 426, which is rotatably fitted around the periphery of the gearbox 4221 and protrudes from the side of the gearbox 4221 opposite to the input shaft 4222. An output shaft 4223 is inserted into and fixedly connected to the second adapter sleeve 426. Thus, the output shaft 4223 can drive the second adapter sleeve 426 to rotate synchronously.

[0078] In some embodiments, the end of the second adapter sleeve 426 away from the gearbox 4221 is provided with a quick-connect part 4261, which can be used to connect the workpiece 2000. The workpiece 2000 can be an electric screwdriver of various models.

[0079] In some embodiments, the quick-connect portion 4261 can be configured as a quick-connect slot, such as a hexagonal quick-change interface. Of course, the quick-connect portion 4261 can also be a pentagonal quick-change interface, etc. In this embodiment, the cross-section of the quick-connect slot perpendicular to the axial direction of the output shaft 4223 is non-circular and can mate with the workpiece 2000 in a non-circular manner, thereby allowing the output shaft 4223 to drive the workpiece 2000 to rotate synchronously.

[0080] In other embodiments, the quick-connect portion 4261 may be configured as a quick-connect post, such as a hexagonal prism or a pentagonal prism.

[0081] In some embodiments, the quick-connect portion 4261 may be formed directly at the end of the output shaft 4223 away from the gearbox 4221.

[0082] In some embodiments, the second locking mechanism 420 further includes a first connecting sleeve 421, which can be sleeved on the outer periphery of the first adapter sleeve 425 and the outer periphery of the second adapter sleeve 426 facing the end of the first adapter sleeve 425. In the embodiments, the first connecting sleeve 421 can be fixedly connected to the second adapter sleeve 426, and the second adapter sleeve 426 can rotate relative to the first adapter sleeve 425.

[0083] In some embodiments, the pusher 423 is fixedly disposed on the periphery of the input shaft 4222, and the pusher 423 may be located at one end of the input shaft 4222 near the gearbox 4221. In some embodiments, the pusher 423 may be fixedly connected to the input shaft 4222 by means of interference fit or bonding. When the second locking mechanism 420 is connected to the main structure 100, the input shaft 4222 may be inserted into the second clamping cavity 310 of the clamping member 300, the rotary output shaft 230 may be inserted into one end of the first connecting sleeve 421 facing the main structure 100, the pusher 423 may be opposite to the clamping member 300 and gradually abut against the clamping member 300, and the pusher 423 may push the clamping member 300 to gradually retract into the receiving groove 2311. Thus, the input shaft 4222 located in the second clamping cavity 310 may be gradually clamped and fixed by the clamping member 300, and power transmission may be realized. As the second locking mechanism 420 is gradually removed from the main structure 100, the pushing member 423 can cancel its pushing action on the clamping member 300, thereby allowing the clamping member 300 to extend relative to the receiving groove 2311 and releasing the third inclined surface 2313 from limiting the second clamping part 321. The input shaft 4222 can also be gradually pulled out from the second clamping cavity 310.

[0084] In some embodiments, the pusher 423 has a sixth inclined surface 4231 on the side opposite to the gearbox 4221. The sixth inclined surface 4231 can gradually tilt away from the input shaft 4222 from the end near the gearbox 4221 to the end away from the gearbox 4221. In some embodiments, the tilt direction of the sixth inclined surface 4231 can be consistent with the tilt direction of the fifth inclined surface 3212. When the second locking mechanism 420 gradually locks onto the main structure 100, the sixth inclined surface 4231 can gradually come into contact with the fifth inclined surface 3212. The sixth inclined surface 4231 can compress the fifth inclined surface 3212 and apply a thrust parallel to the axial direction of the rotating output shaft 230 to the fifth inclined surface 3212, thereby pushing the clamping member 300 to gradually retract into the receiving groove 2311.

[0085] In some embodiments, the second locking mechanism 420 further includes a first bearing 424. The first bearing 424 can be sleeved on the periphery of the input shaft 4222 and supported between the input shaft 4222 and the first adapter sleeve 425. That is, the inner ring of the first bearing 424 can be fixedly connected to the input shaft 4222, and the outer ring of the first bearing 424 can be fixedly connected to the first adapter sleeve 425. Thus, it can be ensured that the input shaft 4222 rotates smoothly relative to the first adapter sleeve 425. In an embodiment, the first bearing 424 can be located on the side of the pusher 423 facing the gearbox 4221.

[0086] During use, when an electric screwdriver is needed to tighten screws, the second locking mechanism 420 can be connected to the main structure 100, and the input shaft 4222 of the gearbox 422 can be inserted into the second clamping cavity 310 of the clamping member 300. After the second locking mechanism 420 is installed in place, the input shaft 4222 can be clamped and fixed by the clamping member 300. The workpiece 2000 can be connected to the quick-connect part 4261 of the output shaft 4223. When the rotary drive 200 is started, the rotary output shaft 230 can drive the input shaft 4222 to rotate synchronously through the clamping member 300. The input shaft 4222 can transmit the rotational power to the gearbox 4221, and after the gearbox 4221 reduces the speed, it outputs low-speed, high-torque rotational power, which drives the workpiece 2000 to rotate through the output shaft 4223 and the second adapter sleeve 426, so that the workpiece 2000 can tighten or loosen screws.

[0087] In some embodiments, the electric handle 1000 further includes a first locking mechanism 410, the structure of which may be similar to that in Embodiment 3. The first locking mechanism 410 may be detachably connected to the first shaft segment 231 of the rotary output shaft 230, and the second locking mechanism 420 may be detachably connected to the main body structure 100. Users may connect the first locking mechanism 410 to the rotary output shaft 230 or the second locking mechanism 420 to the main body structure 100 as needed, so that the electric handle 1000 can connect to a workpiece 2000 such as a grinding head or electric screwdriver. Thus, the electric handle 1000 can be adapted to different application scenarios, improving its versatility and utilization, and further realizing the multi-functionality of power tools to meet various user needs.

[0088] Example 5 This embodiment provides a power tool, which, based on embodiment two, further includes: like Figures 10 to 13 As shown, in some embodiments, the main structure 100 may include an assembly shell 120, which may include a first structural segment 121 and a second structural segment 122 connected to each other. Both the first structural segment 121 and the second structural segment 122 may be tubular structures and coaxially arranged. In some embodiments, the first structural segment 121 and the second structural segment 122 may be integrally connected.

[0089] In some embodiments, the rotary drive 200 further includes a stator 222 and a rotor 221. The rotary output shaft 230 further includes a second shaft segment 232. The second shaft segment 232 may be connected to one end of the first shaft segment 231 away from the opening 2312 of the receiving groove 2311, and is coaxially arranged with the first shaft segment 231. In some embodiments, the second shaft segment 232 may be integral with the first shaft segment 231.

[0090] In this embodiment, the second shaft segment 232 is rotatably disposed within the second structural segment 122. The rotor 221 is disposed around the periphery of the second shaft segment 232 and is fixedly connected to it. The stator 222 is disposed around the periphery of the rotor 221, and the stator 222 is spaced apart from the rotor 221. Furthermore, the stator 222 is fixedly connected to the second structural segment 122. In this embodiment, the first shaft segment 231 can pass through the first structural segment 121 and protrude from the side of the first structural segment 121 opposite to the second structural segment 122.

[0091] In some embodiments, the rotary drive 200 further includes a third end cap 251 and an outer bushing 252. The third end cap 251 is fixedly connected to the end of the second structural segment 122 away from the first structural segment 121 by welding, interference fit, or other means, and can close the opening 2312 at the end of the second structural segment 122 away from the first structural segment 121. The outer bushing 252 can be sleeved on the outer peripheral side of the end of the second structural segment 122 away from the first structural segment 121, and the outer bushing 252 can be fixedly connected to the second structural segment 122 by interference fit, snap-fit, or welding.

[0092] In some embodiments, the rotary drive 200 further includes a fifth bearing 243, which may be sleeved on the periphery of the second shaft segment 232 and located at the end of the second shaft segment 232 away from the first shaft segment 231. The fifth bearing 243 may be connected between the second shaft segment 232 and the third end cap 251, and may provide support for the rotary output shaft 230.

[0093] In some embodiments, the main structure 100 further includes a power supply battery 130 and a second housing 140. One end of the second housing 140 can be sleeved around the periphery of the outer bushing 252 and can be fixedly connected to the outer bushing 252 by means of screw connection, snap-fit, bonding or interference fit. The other end of the second housing 140 can extend away from the rotary drive member 200. In embodiments, the power supply battery 130 can be disposed in the second housing 140. The power supply battery 130 can be electrically connected to the rotary drive member 200 and can supply power to the rotary drive member 200. In some embodiments, the power supply battery 130 can be a rechargeable battery, and the power supply battery 130 can be connected to a charging interface, the insertion end of the charging interface can be exposed outside the second housing 140. In addition, the main structure 100 also includes a circuit board 150, on which an operating component can be integrated. The operating component can be a button group or a touch screen, etc., and the user can input operating commands such as power on / off, speed switching, and working mode switching through the operating component.

[0094] In some embodiments, the clamping member 300 may include at least two second clamping arms 320, which are disposed around the periphery of the second clamping cavity 310. Exemplarily, in some embodiments, the clamping member 300 may include two, three, or four equal numbers of second clamping arms 320, which may be disposed around the periphery of the second clamping cavity 310. The ends of the multiple second clamping arms 320 facing the second shaft segment 232 may be connected as a single unit, while the ends of the multiple second clamping arms 320 away from the second shaft segment 232 may be separated from each other and capable of relative movement. The fourth inclined surface 3211 of the multiple second clamping portions 321 on the side opposite to the second clamping cavity 310 may be located on the same conical surface.

[0095] like Figures 10 to 15 As shown, in some embodiments, the electric handle 1000 includes a third locking mechanism 430, which includes an operating member 431 and a transmission assembly 432. The operating member 431 is movably disposed on the outer periphery of the second structural segment 122. The transmission assembly 432 is tractably connected between the clamping member 300 and the operating member 431. The operating member 431 is configured to drive the transmission assembly 432 to move, thereby causing the clamping member 300 to extend and retract relative to the receiving groove 2311. During use, the user can drive the transmission assembly 432 to move via the operating member 431, and the transmission assembly 432 will cause the clamping member 300 to extend and retract relative to the receiving groove 2311 of the rotating output shaft 230.

[0096] When the clamping member 300 retracts into the receiving groove 2311 under the drive of the transmission assembly 432, the fourth inclined surface 3211 of the second clamping part 321 can abut against the third inclined surface 2313 of the rotary output shaft 230. Under the squeezing action of the third inclined surface 2313, the second clamping part 321 gradually moves closer to the second clamping cavity 310 to clamp the workpiece 2000 inserted in the second clamping cavity 310. The workpiece 2000 can be various types of electric grinding heads. When the clamping member 300 extends relative to the receiving groove 2311 under the drive of the transmission assembly 432, the second clamping part 321 can extend relative to the rotary output shaft 230 and move away from the second clamping cavity 310, which facilitates the user to remove the workpiece 2000 from the second clamping cavity 310, realizing the disassembly of the workpiece 2000.

[0097] In some embodiments, the operating member 431 is rotatably disposed around the periphery of the assembly housing 120, and the operating member 431 and the assembly housing 120 can be positioned at the upper limit of the axial direction of the rotating output shaft 230. For example, the axial limit can be achieved by the cooperation of the limiting protrusion and the limiting groove, which can prevent the operating member 431 from arbitrarily disengaging from the assembly housing 120.

[0098] In some embodiments, the transmission assembly 432 may include a first adapter 4321, a limiting member 4322, and an elastic member 4323. The first adapter 4321 may be disposed within the first structural segment 121, and the first adapter 4321 may be slidably sleeved on the outer periphery of the first shaft segment 231 along the axial direction of the rotating output shaft 230, and the first adapter 4321 may be fixedly connected to the clamping member 300.

[0099] In some embodiments, the transmission assembly 432 further includes a second adapter 4324 and a pin 4325. The second adapter 4324 is fixedly connected to the end of the clamping member 300 away from the second clamping portion 321 by means of a threaded connection or the like. The pin 4325 is fixedly connected between the first adapter 4321 and the second adapter 4324. In addition, a waist-shaped hole 2315 is provided on the first shaft segment 231 of the rotary output shaft 230, and the long axis of the waist-shaped hole 2315 is parallel to the axial direction of the rotary output shaft 230. The pin 4325 is slidably inserted into the waist-shaped hole 2315 and can slide along the long axis of the waist-shaped hole 2315, thereby providing a guiding function for the sliding of the pin 4325 by the inner wall of the waist-shaped hole 2315.

[0100] In some embodiments, a first limiting protrusion 43211 protrudes from the side of the first adapter 4321 opposite to the rotating output shaft 230. The first limiting protrusion 43211 may be located at the end of the first adapter 4321 away from the power supply battery 130. In some embodiments, the first limiting protrusion 43211 may have an annular structure and may be arranged around the circumference of the first adapter 4321.

[0101] In other embodiments, the first limiting protrusion 43211 may also be a plurality of protrusion structures, which may be arranged circumferentially around the first adapter 4321 and may be uniformly or non-uniformly distributed.

[0102] In this embodiment, the limiting member 4322 may be disposed within the first structural segment 121, and the limiting member 4322 may be slidably sleeved on the outer peripheral side of the first adapter 4321, with the sliding direction of the limiting member 4322 parallel to the axial direction of the rotating output shaft 230. The limiting member 4322 may be located on the side of the first limiting protrusion 43211 facing the power supply battery 130, and the first limiting protrusion 43211 may be located on the moving path of the limiting member 4322. In addition, a gap is provided between the limiting member 4322 and the outer peripheral wall of the first adapter 4321 at a relatively opposite position. In this embodiment, the limiting member 4322 may be drively connected to the operating member 431, and the operating member 431 may drive the limiting member 4322 to slide along the axial direction of the rotating output shaft 230.

[0103] In some embodiments, a second limiting protrusion 2314 protrudes from the outer peripheral wall of the first shaft segment 231. The second limiting protrusion 2314 may be located on the side of the first adapter 4321 facing the opening 2312 of the receiving groove 2311, and the second limiting protrusion 2314 may be spaced apart from the first adapter 4321. An elastic member 4323 may be disposed within the first structural segment 121, and the elastic member 4323 may be disposed around the outer peripheral side of the first shaft segment 231, and abut against the first limiting protrusion 43211 and the second limiting protrusion 2314. In some embodiments, the elastic member 4323 may be a disc spring.

[0104] In other embodiments, the elastic element 4323 may also be a structure such as a spring or a flexible column.

[0105] In some embodiments, the transmission assembly 432 further includes a retaining ring 4326, which may be disposed around the outer periphery of the first shaft segment 231 and abut against the side of the second limiting protrusion 2314 facing the first limiting protrusion 43211. The retaining ring 4326 may be located between the second limiting protrusion 2314 and the elastic member 4323, thereby increasing the contact area with the elastic member 4323. In embodiments, the retaining ring 4326 may be fixedly connected to the first shaft segment 231 by means of snap-fit ​​or other methods.

[0106] During use, when the operating member 431 drives the limiting member 4322 to move towards the opening 2312 of the receiving groove 2311, the limiting member 4322 can push the first adapter 4321 to move towards the opening 2312, and cause the second clamping part 321 of the clamping member 300 to extend relative to the receiving groove 2311. Thus, the second clamping part 321 can be allowed to open relative to the second clamping cavity 310, which makes it convenient for the user to insert the workpiece 2000 into or remove it from the second clamping cavity 310. During this process, the first adapter 4321 can compress the elastic member 4323 and cause the elastic member 4323 to store corresponding elastic potential energy. When the operating member 431 drives the limiting member 4322 to move away from the opening 2312 of the receiving groove 2311, the limiting member 4322 can separate from the first limiting protrusion 43211. The first limiting protrusion 43211 can move away from the opening 2312 under the pushing force of the elastic member 4323, and drive the clamping member 300 to retract into the receiving groove 2311, so that the second clamping part 321 clamps and fixes the workpiece 2000 located in the second clamping cavity 310.

[0107] In other embodiments, one end of the elastic member 4323 may be fixedly connected to the first adapter 4321. The other end of the elastic member 4323 may be fixedly connected to the assembly housing 120, and the connection position between the elastic member 4323 and the assembly housing 120 may be located on the side of the first adapter 4321 opposite to the opening 2312. When the clamping member 300 retracts into the receiving groove 2311, and the second clamping part 321 can clamp the workpiece 2000 in the second clamping cavity 310, the elastic member 4323 may be in a stretched or naturally elongated state.

[0108] In some embodiments, the operating member 431 may protrude from one end of the second structural segment 122 toward the first structural segment 121. A first guide groove 4311 may be formed in a section of the operating member 431 surrounding the periphery of the first structural segment 121. The first guide groove 4311 may be located on the side of the operating member 431 facing the mounting housing 120, and the extension direction of the first guide groove 4311 may be parallel to the axial direction of the rotary output shaft 230. A helical guide groove 1211 may be formed in the first structural segment 121 of the mounting housing 120. The helical guide groove 1211 may penetrate the first structural segment 121 along the thickness direction of the mounting housing 120, that is, the helical guide groove 1211 may connect the side of the first structural segment 121 facing the operating member 431 and the side of the first structural segment 121 facing the rotary output shaft 230.

[0109] In some embodiments, the helical guide groove 1211 may be configured with a first end 12111 and a second end 12112 arranged along a first preset direction M. The second end 12112 may be disposed away from the opening 2312 of the receiving groove 2311 relative to the first end 12111. In an embodiment, the second end 12112 of the helical guide groove 1211 also communicates with a limiting groove 12113, which may extend substantially along the axial direction of the rotating output shaft 230.

[0110] In some embodiments, the limiting member 4322 is further provided with a second guide groove 43221 on the side facing the first structural segment 121. The second guide groove 43221 can be arranged around the periphery of the limiting member 4322, that is, the second guide groove 43221 can be annular. In the embodiments, the transmission assembly 432 also includes a ball bearing 4327, which can be rolled in the first guide groove 4311, the spiral guide groove 1211 and the second guide groove 43221.

[0111] During use, when the ball bearing 4327 is located at the first end 12111 of the spiral guide groove 1211, the user can rotate the operating member 431 in the first preset direction M to drive the ball bearing 4327 to move along the spiral guide groove 1211 and gradually move towards the second end 12112. When the ball bearing 4327 moves along the spiral guide groove 1211 towards the second end 12112, it can compress the limiting member 4322 and push the limiting member 4322 to move away from the opening 2312 of the receiving groove 2311. Correspondingly, the elastic member 4323 can push the clamping member 300 to retract into the receiving groove 2311 through the first adapter 4321. When the operating member 431 rotates to the position, the ball 4327 can be engaged in the limiting groove 12113, which can reduce the probability of the ball 4327 arbitrarily disengaging from the second end 12112, thereby ensuring that the clamping member 300 can stably clamp the workpiece 2000 located in the second clamping cavity 310, and ensure stable power transmission.

[0112] When the user rotates the operating member 431 in the opposite direction of the first preset direction M, the ball 4327 can be disengaged from the limiting groove 12113 and gradually move towards the first end 12111 of the spiral guide groove 1211. Correspondingly, the ball 4327 can push the first adapter 4321 to move towards the end near the opening 2312 of the receiving groove 2311 through the limiting member 4322, and cause the second clamping part 321 of the clamping member 300 to extend relative to the receiving groove 2311, so that the user can take out the workpiece 2000 from the second clamping cavity 310 or insert the workpiece 2000 into the second clamping cavity 310.

[0113] In other embodiments, the outer periphery of the limiting member 4322 may be exposed relative to the assembly housing 120, and the limiting member 4322 and the operating member 431 may be connected by a threaded connection. Additionally, a guide rod (not shown) parallel to the axial direction of the rotary output shaft 230 may slidably pass through the limiting member 4322, and the guide rod may be fixedly connected to the assembly housing 120. When the operating member 431 rotates, it can drive the limiting member 4322 to move along the guide rod.

[0114] In other embodiments, the operating element 431 may be a sliding key slidably mounted on the main structure 100, and may be connected to the first adapter 4321 via a linkage or other structure. The sliding direction of the operating element 431 may be parallel to the axial direction of the rotating output shaft 230. During use, the user can push the operating element 431 to extend or retract the clamping member 300 relative to the receiving groove 2311.

[0115] In some embodiments, the third locking mechanism 430 further includes a second connecting sleeve 433, which may cover the side of the rotating output shaft 230 away from the power supply battery 130 and extend to the periphery of the first structural segment 121, and the second connecting sleeve 433 may be threadedly connected to one end of the operating member 431 facing the first structural segment 121.

[0116] In other embodiments, the second connecting sleeve 433 and the operating member 431 can also be connected by means of snap-fit ​​or other methods.

[0117] In some embodiments, the second connecting sleeve 433 is provided with an end plate 4331 opposite to the clamping member 300. The end plate 4331 may have a first through hole 4332 that is opposite to and communicates with the second clamping cavity 310. The workpiece 2000 can be inserted into the second clamping cavity 310 through the first through hole 4332. In the embodiments, when the fourth inclined surface 3211 of the second clamping part 321 separates from the third inclined surface 2313 of the rotary output shaft 230, the clamping member 300 may abut against the end plate 4331 or there may be a gap, thereby ensuring that the clamping member 300 can smoothly extend and retract relative to the rotary output shaft 230.

[0118] In some embodiments, the third locking mechanism 430 further includes a second bearing 434, which surrounds the outer periphery of the first shaft segment 231 and is supported between the first shaft segment 231 and the second connecting sleeve 433. Specifically, the inner ring of the second bearing 434 is fixedly connected to the first shaft segment 231. The outer ring of the second bearing 434 is fixedly connected to the second connecting sleeve 433. In some embodiments, the second bearing 434 may be located on the side of the second limiting protrusion 2314 opposite to the first adapter 4321.

[0119] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0120] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An electric handle, characterized in that, include: Main structure (100); A rotary drive (200) is disposed in the main body structure (100). The rotary drive (200) includes a rotary output shaft (230). A first shaft segment (231) of the rotary output shaft (230) passes through the main body structure (100) and protrudes from one end of the main body structure (100). The first shaft segment (231) is provided with a first clamping cavity (2317) and a first clamping arm (2316) located on the periphery of the first clamping cavity (2317). The outer peripheral wall of the first clamping arm (2316) away from the main body structure (100) is provided with a first inclined surface (23162). The first inclined surface (23162) gradually slopes from the end near the main body structure (100) to the end away from the main body structure (100) towards the side near the first clamping cavity (2317). A locking mechanism (400) is disposed around the periphery of the first shaft segment (231) and is detachably connected to the first shaft segment (231). The inner wall of the locking mechanism (400) facing the first shaft segment (231) is provided with a second inclined surface (41121). The inclination direction of the second inclined surface (41121) is consistent with the inclination direction of the first inclined surface (23162). The second inclined surface (41121) is configured to press the first inclined surface (23162) towards the first clamping cavity (2317) when the locking mechanism (400) is connected to the first shaft segment (231).

2. An electric handle, characterized in that, include: Main structure (100); A rotary drive (200) is disposed in the main body structure (100). The rotary drive (200) includes a rotary output shaft (230). A first shaft segment (231) of the rotary output shaft (230) passes through the main body structure (100) and protrudes from one end of the main body structure (100). A receiving groove (2311) is disposed in the first shaft segment (231). The opening (2312) of the receiving groove (2311) is located at the end of the first shaft segment (231) away from the main body structure (100). A third inclined surface (2313) is disposed on the inner wall of the receiving groove (2311) near the opening (2312). The third inclined surface (2313) gradually slopes away from the central axis of the receiving groove (2311) from the end near the main body structure (100) to the end away from the main body structure (100). A clamping member (300) is slidably disposed in the receiving groove (2311) along the axial direction of the rotating output shaft (230). The clamping member (300) includes a second clamping cavity (310) and a second clamping arm (320) located on the periphery of the second clamping cavity (310). One end of the second clamping arm (320) protrudes relative to the opening (2312) and is configured as a second clamping part (321). The second clamping part (321) is provided with a fourth inclined surface (3211) on the side opposite to the second clamping cavity (310) that is in the same inclination direction as the third inclined surface (2313). The locking mechanism (400) is configured to drive the clamping member (300) to retract into the receiving groove (2311) and cause the third inclined surface (2313) to press the fourth inclined surface (3211) toward the direction of the second clamping cavity (310).

3. The electric handle according to claim 2, characterized in that, The clamping member (300) includes at least two second clamping arms (320) which are arranged around the periphery of the second clamping cavity (310).

4. The electric handle according to claim 2, characterized in that, The locking mechanism (400) includes a locking sleeve (411), which is disposed around the periphery of the first shaft segment (231) and is detachably connected to the first shaft segment (231). The inner wall of the locking sleeve (411) away from the main structure (100) is provided with a pushing part (4112), which is configured to push the clamping member (300) so that the clamping member (300) retracts into the receiving groove (2311) when the locking sleeve (411) is connected to the first shaft segment (231).

5. The electric handle according to claim 4, characterized in that, The second clamping part (321) is provided with a fifth inclined surface (3212) on the side away from the second clamping cavity (310). The fifth inclined surface (3212) is located on the side of the fourth inclined surface (3211) away from the main structure (100). The fifth inclined surface (3212) gradually slopes from the end close to the main structure (100) to the end away from the main structure (100) towards the second clamping cavity (310). The jacking part (4112) is configured as a second inclined surface (41121) that is in the same direction of inclination as the fifth inclined surface (3212).

6. The electric handle according to claim 2, characterized in that, The locking mechanism (400) includes a first adapter sleeve (425), a reduction gearbox (422), and a pusher (423). One end of the first adapter sleeve (425) is sleeved on the periphery of the first shaft segment (231) and is detachably connected to the main structure (100). The gearbox (422) is located on the side of the first adapter sleeve (425) away from the main structure (100). The gearbox (422) includes an input shaft (4222) and an output shaft (4223). When the locking mechanism (400) is connected to the main structure (100), the input shaft (4222) is inserted into the second clamping cavity (310) and clamped and fixed by the second clamping arm (320). The output shaft (4223) is located on the side of the gearbox (422) away from the input shaft (4222). The end of the output shaft (4223) away from the input shaft (4222) is configured to drive and connect the workpiece (2000). The pusher (423) is connected to the periphery of the input shaft (4222) and is opposite to the side of the clamp (300) away from the main structure (100). The pusher (423) is configured to push the clamp (300) so that the clamp (300) retracts into the receiving groove (2311).

7. The electric handle according to claim 6, characterized in that, The pusher (423) is provided with a sixth inclined surface (4231) on the side facing the clamp (300). The sixth inclined surface (4231) gradually slopes away from the input shaft (4222) from one end near the output shaft (4223) to the other end away from the output shaft (4223). The second clamping part (321) is provided with a fifth inclined surface (3212) on the side away from the second clamping cavity (310). The fifth inclined surface (3212) is located on the side of the fourth inclined surface (3211) away from the main structure (100). The inclination direction of the fifth inclined surface (3212) is consistent with the inclination direction of the sixth inclined surface (4231).

8. The electric handle according to claim 6, characterized in that, The locking mechanism (400) further includes a second adapter sleeve (426), which is arranged around the periphery of the output shaft (4223) and fixedly connected to the output shaft (4223). A quick-connect part (4261) is provided at the end of the second adapter sleeve (426) away from the input shaft (4222), and the quick-connect part (4261) is configured to connect the workpiece (2000).

9. The electric handle according to claim 8, characterized in that, The quick-connecting part (4261) is configured as a quick-connecting slot, and the cross section of the quick-connecting slot perpendicular to the axial direction of the output shaft (4223) is non-circular.

10. The electric handle according to claim 6, characterized in that, The locking mechanism (400) further includes a first bearing (424), which is sleeved on the periphery of the input shaft (4222) and located on the side of the pusher (423) facing the output shaft (4223); The first bearing (424) is supported between the input shaft (4222) and the first adapter sleeve (425).

11. The electric handle according to claim 2, characterized in that, The locking mechanism (400) includes an operating member (431) and a transmission assembly (432). The operating member (431) is movably disposed on the periphery of the main structure (100), and the transmission assembly (432) is throttlely connected between the clamping member (300) and the operating member (431). The operating element (431) is configured to drive the transmission assembly (432) to move, thereby causing the clamping element (300) to extend or retract relative to the receiving groove (2311).

12. The electric handle according to claim 11, characterized in that, The operating element (431) is rotatably disposed around the periphery of the main structure (100); The transmission assembly (432) includes a first adapter (4321), a limiting member (4322), and an elastic member (4323). The first adapter (4321) is slidably sleeved on the outer periphery of the rotary output shaft (230) along the axial direction of the rotary output shaft (230) and is fixedly connected to the clamping member (300). The first adapter (4321) has a first limiting protrusion (43211) protruding from the side opposite to the rotary output shaft (230). The limiting member (4322) is slidably sleeved on the outer periphery of the first adapter (4321) along the axial direction of the rotary output shaft (230) and is connected to the operating member (431) in a transmission manner. The limiting member (4322) is located on the side of the first limiting protrusion (43211) away from the opening (2312). The operating member (431) is configured to drive the limiting member (4322) to move along the axial direction of the rotary output shaft (230) to limit the position of the first limiting protrusion (43211). The elastic element (4323) acts on the first adapter (4321), and the elastic element (4323) is configured to drive the first adapter (4321) to cause the clamping member (300) to retract into the receiving groove (2311).

13. The electric handle according to claim 12, characterized in that, The rotary output shaft (230) has a second limiting protrusion (2314) protruding from its periphery. The second limiting protrusion (2314) is located on the side of the first adapter (4321) facing the opening (2312). The elastic member (4323) is arranged around the periphery of the rotary output shaft (230) and abuts against the second limiting protrusion (2314) and the first limiting protrusion (43211).

14. The electric handle according to claim 12, characterized in that, The operating member (431) is provided with a first guide groove (4311) parallel to the axial direction of the rotary output shaft (230) on the side facing the main structure (100), the main structure (100) is provided with a spiral guide groove (1211), and the limiting member (4322) is provided with an annular second guide groove (43221) on the side away from the first adapter (4321). The transmission assembly (432) further includes a ball bearing (4327) which is rotatably disposed in the first guide groove (4311), the spiral guide groove (1211) and the second guide groove (43221).

15. The electric handle according to claim 14, characterized in that, The spiral guide groove (1211) is provided with a first end (12111) and a second end (12112) distributed along a first preset direction (M), and the second end (12112) is located on the side of the first end (12111) away from the opening (2312); The second end (12112) is also connected to a limiting groove (12113), and the limiting member (4322) is used to restrict the ball (4327) from moving toward the first end (12111).

16. The electric handle according to claim 12, characterized in that, The transmission assembly (432) further includes a second adapter (4324) and a pin (4325). The second adapter (4324) is fixedly connected to the end of the clamping member (300) away from the second clamping part (321). The rotary output shaft (230) has a waist-shaped hole (2315). The long axis of the waist-shaped hole (2315) is parallel to the axial direction of the rotary output shaft (230). The pin (4325) is slidably inserted into the waist-shaped hole (2315) and fixedly connected to the first adapter (4321) and the second adapter (4324) respectively.

17. The electric handle according to claim 11, characterized in that, The locking mechanism (400) further includes a second connecting sleeve (433), one end of which is connected to the end of the operating member (431) facing the opening (2312) and is arranged around the periphery of the main structure (100); The second connecting sleeve (433) is provided with an end plate (4331) opposite to the clamping member (300) at one end away from the operating member (431). The end plate (4331) is provided with a first through hole (4332) communicating with the second clamping cavity (310). When the third inclined surface (2313) separates from the fourth inclined surface (3211), the clamping member (300) abuts against the end plate (4331) or there is a gap between the clamping member (300) and the end plate (4331).

18. The electric handle according to claim 17, characterized in that, The first shaft segment (231) has one end with the opening (2312) protruding relative to the main body structure (100). The locking mechanism (400) also includes a second bearing (434), which is sleeved on the outer periphery of the first shaft segment (231) protruding relative to the main body structure (100) and supported between the first shaft segment (231) and the second connecting sleeve (433).

19. The electric handle according to claim 2, characterized in that, The rotary output shaft (230) also includes a second shaft segment (232), which is an integral structure with the first shaft segment (231); The rotary drive (200) also includes a housing assembly (210), a stator (222) and a rotor (221), wherein the housing assembly (210) is fixedly disposed in the main body structure (100), and the second shaft segment (232) is rotatably mounted in the housing assembly (210); The rotor (221) and the stator (222) are both disposed in the housing assembly (210). The rotor (221) is disposed around the periphery of the second shaft segment (232) and is fixedly connected to the second shaft segment (232). The stator (222) is disposed around the periphery of the rotor (221) at intervals and is fixedly connected to the housing assembly (210).

20. The electric handle according to claim 19, characterized in that, The housing assembly (210) includes a housing (211), a first end cap (212), and a second end cap (213). The first end cap (212) and the second end cap (213) are respectively disposed at both ends of the housing (211), and the first end cap (212) is located at one end of the housing (211) facing the first shaft segment (231). The end of the second shaft segment (232) facing the first shaft segment (231) is rotatably connected to the first end cover (212) through the third bearing (241), and the end of the second shaft segment (232) away from the first shaft segment (231) is rotatably connected to the second end cover (213) through the fourth bearing (242).

21. A power tool, characterized in that, It includes a workpiece (2000) and an electric handle as described in any one of claims 1 to 20, wherein the workpiece (2000) is drive-connected to the rotary output shaft (230).

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