Electric tool

Abstract

The invention discloses an electric tool which comprises an output assembly which is arranged at the end of a first handle and comprises at least two output units arranged at intervals, and the output units are used for being connected with working accessories; the switching mechanism comprises a mounting unit, the output unit is supported on the mounting unit, and the switching mechanism is rotationally arranged at the end of the first handle and provided with a switching axis capable of rotating around the switching axis; the clutch mechanism is movably connected with the switching mechanism, the clutch mechanism is provided with a transmission position and a separation position, the transmission position is in transmission connection with the output unit and the transmission unit, the separation position is separated from the switching mechanism, and when the clutch mechanism is located at the separation position, the switching mechanism can rotate relative to the machine body. The electric tool is appropriate in gravity center, stable in use process, compact in internal structure of the machine shell and smaller in size; according to the invention, the operation steps of the user are simplified, the single-hand clutch switching operation of the user is realized, and the use experience of the user is improved.

Description

[0001] This application is a divisional application of the application filed on June 4, 2021, with national application number 202110625432.1 and invention title "Electric Tools". Technical Field

[0002] This invention relates to a power tool, and more particularly to a power tool with a multi-output unit. Background Technology

[0003] Handheld power tools typically have only one output head for attaching working attachments. Therefore, during use, it's necessary to change attachments depending on the specific working conditions. This requires removing the old attachment and replacing it with the new one. Given the cumbersome process of attaching and removing attachments, which negatively impacts user experience and work efficiency, some existing power tools feature dual output heads. By switching the positions of the two output heads, the needs of different working conditions can be met.

[0004] However, existing dual-head power tools, on the one hand, are usually complex in structure and heavy in weight due to the addition of working heads and dual-head conversion mechanisms, making them inconvenient for users to operate; on the other hand, they usually have a clutch mechanism to disconnect the transmission connection between the working head and the transmission mechanism when switching working heads. The locking switch used to achieve the clutch in existing technology is usually located on the main handle, far away from the working head, which is cumbersome and occupies a large space in the whole machine, which is not conducive to the miniaturization of the whole machine. At the same time, when performing the conversion operation, one hand needs to press the locking switch to unlock and the other hand needs to turn the working head to complete the conversion, which is not conducive to one-handed switching by the user and affects the user's operating experience. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a compact, easy-to-operate power tool with multiple output units.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An electric tool includes: a body including a first handle; an output component disposed at the end of the first handle; a power mechanism including a motor and a transmission unit for driving the output component; a switch assembly disposed on the body for controlling the power mechanism; the output component includes at least two spaced-apart output units for connecting working attachments; and further includes: a switching mechanism including a mounting unit, the output units being supported on the mounting unit, the switching mechanism being rotatably disposed at the end of the first handle and having a switching axis rotatable around it; and a clutch mechanism movably connected to the switching mechanism, the clutch mechanism having a transmission position for transmitting the output units and the transmission unit, and a disengagement position for disengaging from the switching mechanism, wherein the switching mechanism is rotatable relative to the body when in the disengagement position.

[0008] An electric tool includes: a body including a first handle; an output component disposed at the end of the first handle; a power mechanism including a motor and a transmission unit for driving the output component; a switch assembly disposed on the body for controlling the power mechanism; the output component includes at least two spaced-apart output units for connecting working attachments, the output component being rotatable about a switching axis to switch the output units to a working position or a non-working position; and further includes: a clutch mechanism movably connected to the switching mechanism, the clutch mechanism having a transmission position for transmitting the output units and the transmission unit, and a disengagement position for disengaging from the output component, wherein the output component is rotatable relative to the body when in the disengagement position.

[0009] In some embodiments, the power tool further includes a battery pack that provides power to the power mechanism.

[0010] In some embodiments, the battery pack is located at the bottom of the machine body and includes a standing surface. The power tool can stand on the standing surface, and when standing, the center of gravity of the power tool is projected onto the standing surface in the standing surface.

[0011] In some embodiments, the first handle support is connected between the output component and the battery pack.

[0012] In some embodiments, the first handle is tilted relative to the switching axis.

[0013] In some embodiments, the angle between the axis of the first handle and the switching axis is greater than or equal to 10° and less than or equal to 60°.

[0014] In some embodiments, the angle between the axis of the output unit and the standing plane is greater than or equal to 0° and less than or equal to 90°.

[0015] In some embodiments, the output unit in the working position is higher than the output unit in the non-working position.

[0016] In some embodiments, the axis of the first handle intersects the switching axis in opposite planes.

[0017] In some embodiments, the motor is located inside the first handle.

[0018] In some embodiments, the switching assembly includes a trigger for controlling the start and stop of the motor.

[0019] In some embodiments, the trigger includes a front limit position during bit operation, the front limit position being the front end of the output unit, and the operating span along the axial direction of the output unit being less than or equal to 130 mm.

[0020] In some embodiments, the distance between the rear limit position of the housing and the front end of the output unit along the axial direction of the output unit is less than or equal to 195 mm.

[0021] In some embodiments, the power tool further includes a switching mechanism, which includes a mounting portion, an output unit supported on the mounting portion, and the switching mechanism is rotatably disposed at the end of the first handle.

[0022] In some embodiments, the mounting part is a U-shaped bracket, which includes a connecting seat and a pair of sidewalls, with the connecting seat connected between the pair of sidewalls.

[0023] In some embodiments, the switching mechanism further includes a conversion unit connected to the mounting portion, the conversion unit being a ring frame rotatable about the switching axis.

[0024] In some embodiments, the switching mechanism guides the clutch mechanism to move between a drive position and a disengagement position.

[0025] In some embodiments, the clutch mechanism or transmission unit is at least partially located between two spaced output units.

[0026] In some embodiments, the clutch mechanism includes a bushing and a movable member, the movable member being connected to the bushing, the bushing being movably connected to the transmission unit, and being driven by the movable member to connect or disconnect from the output unit.

[0027] In some embodiments, the transmission unit includes a transmission shaft, the transmission shaft includes a clutch transmission part, a bushing is movably connected to the clutch transmission part, and the transmission shaft transmits torque to the bushing via the clutch transmission part.

[0028] In some embodiments, the clutch transmission part includes a non-circular shaft disposed at the end of the transmission shaft, and the non-circular shaft is engaged with a non-circular hole on the bushing.

[0029] In some embodiments, the output unit, bushing, and drive shaft are coaxially arranged, the transmission position and the separation position are distributed along the axial direction of the drive shaft, and the moving part drives the bushing to move along the axial direction of the drive shaft.

[0030] In some embodiments, the switching mechanism includes a locking part and an unlocking part. When the clutch mechanism is in the transmission position, it cooperates with the locking part and restricts the rotation of the switching mechanism. When the clutch mechanism is in the disengaged position, it disengages from the locking part and allows the switching mechanism to rotate.

[0031] In some embodiments, the locking part includes a plurality of linear grooves, and the unlocking part is an annular groove. The annular groove is coaxially arranged with the switching axis, and one end of each of the plurality of linear grooves intersects with the annular groove.

[0032] In some embodiments, the movable member includes a first connecting portion adapted to be inserted into a straight groove and an annular groove, the annular groove forming a separation position and the straight groove forming a transmission position.

[0033] In some embodiments, the switching mechanism further includes a conversion unit connected to the mounting unit; the conversion unit is a ring frame rotatable about the switching axis.

[0034] In some embodiments, the conversion unit is a ring frame that can rotate about the switching axis.

[0035] In some embodiments, the locking part includes locking grooves distributed radially along the ring frame, the locking grooves causing the clutch mechanism to be in the drive position.

[0036] In some embodiments, the switching structure is a shell-shaped structure with an opening at the bottom.

[0037] In some embodiments, the conversion unit is located at the opening.

[0038] In some embodiments, the switching mechanism is a U-shaped bracket, which includes a connecting seat and a pair of sidewalls, with the connecting seat connected between the pair of sidewalls.

[0039] In some embodiments, the other end of the bushing is provided with a torque transmission element, and the output unit includes a clamping part and a connecting part. The clamping part is used to install working accessories, and the connecting part is connected to the torque transmission element for transmission.

[0040] In some embodiments, the torque transmission element includes a groove provided on the bushing, and the connecting portion includes a transmission claw provided on the output unit, the groove being adapted to insert the transmission claw.

[0041] In some embodiments, the body further includes a support housing disposed on top of the first handle, the support housing includes an output port, and the support housing also includes a rotary guide unit, with the mounting unit slidably connected to the rotary guide unit.

[0042] In some embodiments, the power tool further includes a protective housing connected to the body, forming a protective space between the protective housing and the body for accommodating working attachments located in a non-working position.

[0043] In some embodiments, the transmission unit further includes a meshing first bevel gear and a second bevel gear, the first bevel gear being coaxially connected to the transmission shaft.

[0044] In some embodiments, the fuselage also includes a second handle, which is disposed at the rear end of the first handle.

[0045] In some embodiments, a battery pack is disposed at the bottom of the first handle and the second handle. The battery pack includes a standing surface, through which the power tool can stand. When standing, the center of gravity of the power tool is projected onto the standing surface in the standing surface.

[0046] In some embodiments, the dimensions of the cross-sections of the first handle and the second handle at any equal height are not equal, wherein the height direction refers to the direction perpendicular to the standing plane.

[0047] In some embodiments, the switch assembly is located on the second handle.

[0048] In some embodiments, the power tool further includes a storage mechanism for storing unused accessories; the storage mechanism is a storage compartment or a storage clip, the storage compartment being located inside the body and having an openable and closable door, and the storage clip having a groove for holding accessories.

[0049] The advantages of this invention are:

[0050] The power tool of the present invention has a suitable center of gravity, is stable during use, has a compact internal structure, and is smaller in size. The present invention simplifies the user's operation steps, realizes the user's one-handed clutch switching operation, and improves the user experience. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the structure of the power tool of the present invention;

[0052] Figure 2 yes Figure 1 The diagram shows an assembly diagram of the power tools.

[0053] Figure 3 yes Figure 1 Another angle of the assembly diagram of the power tool shown;

[0054] Figure 4 yes Figure 2 The diagram shows the structure of the power tool after part of its housing has been removed.

[0055] Figure 5This is an assembly diagram of the output unit, switching mechanism, clutch mechanism and transmission unit of the present invention;

[0056] Figure 6 This is a front view of the switching mechanism of the present invention;

[0057] Figure 7 yes Figure 6 A bottom view of the switching mechanism shown;

[0058] Figure 8 This is a front view of the movable component of the present invention;

[0059] Figure 9 yes Figure 8 Left view of the movable component shown;

[0060] Figure 10 yes Figure 8 A top view of the movable component shown;

[0061] Figure 11 This is a schematic diagram of another embodiment of the switching mechanism of the present invention;

[0062] Figure 12 yes Figure 11 A schematic diagram of the assembled output unit, switching mechanism, and clutch mechanism in the embodiment;

[0063] Figure 13 yes Figure 11 A schematic diagram of the installation structure of the switching mechanism in the embodiment;

[0064] Figure 14 yes Figure 11 A schematic diagram of the structure of the switching mechanism in the embodiment when the clutch mechanism is in the transmission position;

[0065] Figure 15 yes Figure 11 A schematic diagram of the structure of the switching mechanism in the embodiment when the clutch mechanism is in the disengaged position;

[0066] Figure 16 yes Figure 11 A schematic diagram of the assembly of the switching mechanism and the output unit in the embodiment;

[0067] Figure 17 yes Figure 11 A schematic diagram of the clutch mechanism assembly in the embodiment;

[0068] Figure 18 yes Figure 11 A schematic diagram of the switching mechanism conversion unit in the embodiment;

[0069] Figure 19 This is a schematic diagram of the output unit of the present invention;

[0070] Figure 20 yes Figure 19 The output unit shown is a front view.

[0071] Figure 21 This is a schematic diagram of the bushing structure of the present invention;

[0072] Figure 22 yes Figure 21 The left view of the bushing shown;

[0073] Figure 23 This is a schematic diagram of the storage mechanism of the present invention. Detailed Implementation

[0074] The present invention will now be described in detail with reference to the accompanying drawings.

[0075] like Figure 1 As shown, this invention provides a power tool 100, specifically a handheld power tool, wherein the power tool 100 in this embodiment is a handheld dual-output electric drill.

[0076] At the same time, although this embodiment relates to a handheld power tool, it should be understood that the present invention is not limited to the disclosed embodiment, but can be applied to other types of power tools, including but not limited to other tools that require clamping working attachments, such as electric drills.

[0077] like Figure 1 As shown, the power tool 100 includes a body 110, an output component 200, a power supply unit, and a switch component 800. In this embodiment of the invention, the power supply unit is a battery pack 700. Of course, the power tool 100 can also be an AC tool, in which case the power supply unit includes a cable and plug for connection to AC power.

[0078] Among them, such as Figure 1 As shown, the body 110 in this embodiment of the invention includes a first handle 111 and a second handle 112. The first handle 111 and the second handle 112 are arranged along the front-rear direction of the body 110, wherein the second handle 112 is located at the rear end of the first handle 111. In this embodiment, the front-rear direction refers to the gripping direction of the power tool, with the front being the direction the user faces and the rear being the direction opposite to the user's facing direction.

[0079] The dimensions of the cross-sections of the first handle 111 and the second handle 112 at any equal height are not equal, where the height direction refers to the direction perpendicular to the standing surface.

[0080] In this embodiment, the battery pack 700 is disposed at the bottom end of the first handle 111 and the second handle 112. Specifically, the bottom ends of the first handle 111 and the second handle 112 are connected via the battery pack. The bottom ends of the first handle 111 and the second handle 112 are also provided with a connecting seat 113 suitable for mounting the battery pack 700. The connecting seat 113 is provided with conductive terminals that are electrically connected to the battery pack 700. The battery pack 700 includes a standing surface 710. The tool 100 can stand on a workbench via the standing surface 710 of the battery pack 700. The center of gravity of the power tool 100 in this embodiment is projected onto the standing surface 710. This arrangement avoids instability caused by an unstable center of gravity, thus preventing the safety hazard of the tool tipping over. When standing on the work platform, the part of the bottom surface of the battery pack 700 that contacts the operating platform constitutes the standing surface 710. It can be understood that if the bottom surface of the battery pack 700 is a plane, then the bottom surface of the battery pack 700 constitutes the standing surface 710.

[0081] In this embodiment of the invention, the output component 200 is disposed at the front end of the body 110. The output component 200 includes at least two output units 210 spaced apart, and the output units 210 are used to connect to the working accessory 900. See appendix. Figure 1 The output unit 210 has a working position 120 and a non-working position 130, wherein the working position 120 is located on the front side of the output assembly 200, and any other position other than the front side can be configured as the non-working position. The output assembly 200 has a switching axis 201 around which it rotates, and rotating the output assembly 200 around the switching axis 201 can rotate different output units 210 on the output assembly 200 to the working position 120 or the non-working position 130.

[0082] like Figure 2 and Figure 3 As shown, the output unit 210 in this embodiment is cylindrical, and the axis of the cylindrical tube coincides with the output axis 202. This embodiment provides two output units 210, which are arranged opposite to each other. Therefore, in this embodiment, the front side of the output assembly 200 is the working position 120, and the rear side corresponding to the front side is the non-working position 130. When a certain working attachment 900 needs to be used, the corresponding output unit 210 is rotated to the front side. The end of the output unit 210 is provided with a clamping part 211 for clamping the working attachment 900. In this embodiment, the working attachment 900 includes drill bits, screwdriver bits, etc. One of the two output units 210 is configured to clamp a drill bit, and the other output unit 210 is configured to clamp a screwdriver bit; of course, as an alternative embodiment, it can also be used to clamp two drill bits or two screwdriver bits, and this is not limited.

[0083] See appendix Figure 4 The body 110 is equipped with a power mechanism 300 and a control mechanism 400. The power mechanism 300 is used to drive the output unit 210 to move, and the control mechanism 400 controls the operation of the power mechanism 300. The power mechanism 300 includes a motor 310 and a transmission unit 320. The output end of the motor 310 is connected to the output unit 210 through the transmission unit 320.

[0084] Among them, such as Figure 1 As shown, the output unit 210 has an output axis 202 about which it rotates. In this embodiment of the invention, the two output units are coaxially arranged along the direction of the output axis 202, and the output axis 202 is inclined relative to the standing surface 710. Specifically, as Figure 1 As shown, the output unit 210 located in the working position 120 is higher than the output unit 210 located in the non-working position 130. In this embodiment, see attached diagram. Figure 1 The output axis 202 is approximately perpendicular to the switching axis 201. It can be understood that the output unit 210 extends in a direction approximately perpendicular to the switching axis 201. In other words, the output unit 210 rotates in a plane of rotation approximately perpendicular to the switching axis 201, and this plane of rotation is inclined relative to the standing surface 710.

[0085] In this embodiment of the invention, the axis of the first handle 111 intersects the switching axis 201, specifically either on opposite planes or on the same plane. When the axis of the first handle 111 intersects the switching axis 201 on opposite planes, the angle α between the axis of the first handle 111 and the switching axis 201 is greater than or equal to 0° and less than or equal to 60°. When the axis of the first handle 111 intersects the switching axis 201 on the same plane, the angle α between the axis of the first handle and the switching axis is greater than or equal to 10° and less than or equal to 60°.

[0086] See appendix Figure 4 The motor 310 is disposed in the first handle 111, which is supported and connected between the output assembly 200 and the battery pack 700 and is inclined relative to the switching axis 201. See Appendix Figure 2In this embodiment of the invention, the angle α between the axis of the first handle 111 and the switching axis 201 is greater than or equal to 10° and less than or equal to 60°, and the angle β between the output axis 202 of the output unit 210 and the standing surface 710 is greater than or equal to 0° and less than or equal to 90°. By tilting the output axis 202 relative to the standing surface 710 and setting the angle between the first handle 111 and the switching axis 201 within the above range, the length of the first handle is longer than the length of the second handle, thereby placing most of the mechanism within it. On the one hand, while ensuring transmission performance, the axial dimension of the whole machine is minimized as much as possible, making the whole machine structure more compact and smaller in size; on the other hand, by tilting the first handle 111 and placing the motor 310 in the first handle 111, the motor 310 is closer to the output unit 210, and the weight of the motor 310 adjusts the center of gravity of the whole machine to move forward, ultimately making the center of gravity fall on the orthogonal projection of the standing surface 710 located in the standing surface 710, making the whole machine more coordinated and stable. In other embodiments, the first handle 111 may also be set perpendicular to the standing surface 710. In this case, the switching axis 201 is also inclined relative to the standing surface 710, as long as the center of gravity of the tool 100 is ultimately placed in the projection of the standing surface 710.

[0087] The control mechanism 400 mainly includes a control circuit board. The control mechanism 400 is electrically connected to the switch assembly 800 and the motor 310. The switch assembly 800 controls the on / off state of the motor 310 through the control mechanism 400 to switch the overall operating state of the machine. The switch assembly 800 is located on the body 110, specifically on the second handle 112, while the control mechanism 400 is located in the connecting base 113. The location of the control mechanism 400 in the connecting base 113 places it in the middle position among the switch assembly 800, the motor 310, and the battery pack 700, making circuit layout easier, saving space occupied by wiring, and further reducing the overall size of the machine.

[0088] See Appendix for details. Figure 4 The switch assembly 800 includes a trigger 810 and a locking button 820. The trigger 810 is electrically connected to the control mechanism 400 for controlling the start and stop of the motor 310. The trigger 810 has an initial position when not operated by the user and a starting position when pressed to trigger the motor 310 to start. The locking button 820 can be used to lock the trigger 810 in the starting position. Figure 4As shown, the operating span L1 of the trigger 810 is less than or equal to 130 mm; where the operating span refers to the distance along the output unit axial direction between the foremost point of the trigger 810 and the front end of the output unit 210 when the trigger 810 is in its original position 811. Further, the overall span L2 between the rear limit position of the fuselage and the front end of the output unit 210 is less than or equal to 195 mm. The overall span L2 refers to the distance along the output unit axial direction between the rear end of the fuselage and the front end of the output unit 210. In this embodiment, the overall span L2 is approximately 175 mm, and the overall height is approximately 167 mm, where height refers to the longitudinal distance from the top of the fuselage to the standing surface 710.

[0089] If the operating span L1 is too long, the working attachment 900 is prone to swaying and other unstable states during operation, which increases the difficulty of operation for the user and is not conducive to one-handed operation. Therefore, setting the operating span within the above range helps to reduce the difficulty of operation for the user, facilitates one-handed operation, and improves the user experience.

[0090] The power tool in this embodiment of the invention further includes a switching mechanism 500 and a clutch mechanism 600, wherein, as shown in the figure... Figure 1-4 As shown, the switching mechanism 500 is rotatably mounted on the top of the first handle 111, and the switching mechanism 500 rotates around the switching axis 201; wherein the clutch mechanism 600 is movably connected to the switching mechanism 500. In other embodiments of the present invention, the switching mechanism may not be provided, and the output component actually has the function of switching, that is, the output component and the switching structure are integrated, so that the output component includes a structure that can lock and unlock with the clutch mechanism.

[0091] The switching mechanism 500 includes a mounting part 510 and a locking element, wherein the mounting part 510 is used to mount the support output unit 210, and the locking element enables the clutch mechanism 600 to move between the drive position and the disengagement position.

[0092] like Figure 5-7 As shown, in the first embodiment, the locking element includes a locking part 520 and an unlocking part 530. The locking part 520 restricts the switching mechanism 500 from rotating relative to the clutch mechanism 600, and the unlocking part 530 allows the switching mechanism 500 to rotate.

[0093] See appendix Figure 7 The clutch mechanism 600 has a transmission position 601 that connects the output unit 210 and the transmission unit 320, and a disengagement position 602 that disengages the transmission unit 320 from the output unit 210. The switching mechanism 500 guides the clutch mechanism 600 to move between the transmission position 601 and the disengagement position 602. The transmission position 601 and the disengagement position 602 are distributed along the axial direction of the transmission shaft 321.

[0094] Specifically, such as Figure 5 and 6 As shown, the switching mechanism of this embodiment is a U-shaped bracket, which includes a connecting seat 540 and a pair of sidewalls 550. The connecting seat 540 is disposed between the pair of sidewalls 550, thereby forming opposing U-shaped openings 545 between the pair of sidewalls. The connecting seat 540 is pivotally connected to the support housing 114 on the top of the body 110, wherein the support housing 114 is disposed on the top of the first handle 111. See also... Figure 2 and Figure 3 The support housing 114 includes an output port 1141, a clutch mechanism 600 is connected to the drive shaft 321 via the output port 1141, and a switching mechanism 500 is pivotally connected to the support housing 114.

[0095] like Figure 5 and Figure 6 As shown, the mounting part 510 is a support boss provided on the side wall 550, wherein the support boss is provided with a through circular mounting hole to be adapted to the output unit 210, and the output unit 210 is supported in the mounting hole of the support boss.

[0096] like Figure 5 As shown, the clutch mechanism 600 includes a bushing 610 and a moving member 620, wherein the moving member 620 is connected to the bushing 610, and the bushing 610 is movably connected to the drive shaft 321 and can be connected to or separated from the output unit 210. The output unit 210, the bushing 610, and the drive shaft 321 are coaxially arranged, and the moving member 620 drives the bushing 610 to move axially along the drive shaft 321.

[0097] See Figures 8-10 In this embodiment of the invention, the movable member 620 includes a first connecting part 621 and a second connecting part 622. The first connecting part 621 is slidably connected to the locking part 520 and the unlocking part 530. The locking part 520 guides the movable member 620 to move between the transmission position 601 and the separation position 602. The second connecting part 622 is connected to the bushing 610 and drives the bushing 610 to move synchronously through the second connecting part 622.

[0098] Specifically, such as Figure 3 As shown, the movable part 620 is radially transversely disposed on the bushing 610, see [reference]. Figures 8-10 The movable component 620 includes a movable component body 623, a first connecting portion 621 being a protrusion disposed on the top of the movable component body 623, and a second connecting portion 622 being a claw disposed on the lower part of the movable component 620, such as... Figure 13 As shown, the corresponding bushing 610 is provided with a groove 612, specifically an annular groove dug along the outer periphery of the bushing 610, and the pawl is engaged in the groove 612.

[0099] See appendix Figure 8 - Appendix Figure 10The movable part 620 of the present invention is further provided with an operation part 624 for user operation. There are two operation parts, which are respectively arranged across the radial sides of the support housing 114 and exposed through the opening 560 on the switching mechanism 500 for user operation. The user operates the operation part 624 to switch the position of the clutch mechanism 600.

[0100] like Figure 3 As shown, the clutch mechanism 600 in this embodiment of the invention also includes a biasing force member 630 disposed at the end of the moving member 620, which is used so that when the user releases the operating part 624, the moving member 620 can return to the transmission position 601 under the action of the biasing force member 630.

[0101] like Figure 7 As shown, in this embodiment of the invention, the locking part 520 and the unlocking part 530 are grooves provided inside the connecting seat 540, wherein the first connecting part 621 is adapted to be inserted into the groove and move along the groove. The locking part 520 includes a plurality of straight grooves arranged along the axial direction of the mounting part 510, and the unlocking part 530 is an annular groove provided at the center of the connecting seat 540. The straight grooves are respectively arranged extending along the axial direction of the mounting part 510, and the annular groove is coaxially arranged with the switching axis 201. The ends of the plurality of straight grooves intersect with the annular groove, wherein the intersection of one end of the straight groove and the annular groove begins to pass through the annular groove and ends at the intersection of the other end, which is the separation position 602. The end of the straight groove away from the annular groove forms the transmission position 601.

[0102] When the first connecting part 621 is located at the end of the straight groove away from the annular groove, the clutch mechanism 600 is in the transmission position 601. At this time, the bushing 610 is driven by the moving part 620 to extend through the output port 1141 of the support housing 114 and connect with the output unit 210. Since the protrusion is located in the straight groove at this time, the switching mechanism 500 is restricted by the straight groove and the clutch mechanism and cannot rotate relative to the clutch mechanism 600. When the protrusion is located at the intersection of the straight groove and the annular groove, in other words, when the protrusion is located in the annular groove, the clutch mechanism 600 is in the disengagement position 602. The bushing 610 is driven by the moving part 620 to retract into the support housing 114 and disengage from the output unit 210. Since the protrusion is located in the annular groove at this time, the switching mechanism 500 can rotate relative to the clutch mechanism 600.

[0103] like Figure 2 As shown, a rotary guide unit 1142 is also provided on the support housing 114, and the switching mechanism 500 is slidably connected to the rotary guide unit 1142. Specifically, as shown in the figure, the rotary guide unit 1142 of this embodiment is a sliding groove provided on the support housing 114, and the bottom of a pair of side walls 550 of the switching mechanism 500 is slidably connected to the sliding groove.

[0104] like Figure 4As shown, the transmission unit 320 includes a gearbox, which comprises a bevel gear set 322 and a drive shaft 321. Since the first handle 111 in this embodiment is inclined relative to the standing surface 710, the gearbox preferably includes a bevel gear set. In other embodiments, it can be any other type of transmission structure, and there is no limitation thereto. The bevel gear set 322 includes a first bevel gear and a second bevel gear. The first bevel gear and the drive shaft 321 are coaxially connected and jointly disposed between two spaced output units.

[0105] like Figure 5 As shown, the drive shaft 321 includes a clutch drive unit 3211, wherein the bushing 610 is slidably connected to the clutch drive unit 3211, and the drive shaft 321 transmits torque to the bushing 610 through the clutch drive unit 3211 so that the bushing 610 rotates synchronously with the drive shaft 321.

[0106] Specifically, see Appendix Figure 5 The clutch transmission part is a non-circular shaft located at the end of the transmission shaft 321, meaning its cross-section is non-circular. The corresponding bushing 610 has a non-circular hole that mates with the non-circular shaft. In this embodiment, the transmission shaft 321 includes a flat shaft 3211 that is connected to the bushing 610. The corresponding bushing 610 has a flat hole 613 that mates with the non-circular shaft. Through the cooperation of the flat shaft 3211 and the flat hole 613, the bushing 610 can slide axially relative to the transmission shaft 321 and rotate with the transmission shaft 321. Alternatively, the clutch transmission part 3211 can be a plane located on the outer periphery of the transmission shaft 321. This can be achieved by cutting a plane along the axial direction of the outer periphery of the transmission shaft 321 to form a non-circular cross-section, with the bushing having a hole of the same shape as this non-circular cross-section.

[0107] In this embodiment of the invention, the other end of the bushing 610 is provided with a torque transmission component, and the other end of the output unit 210 without a clamping portion is provided with a connecting portion, which is connected to the torque transmission component in a driving manner. Specifically, as shown... Figures 21-22 As shown, the connecting part is a transmission claw 212 located at the end of the output unit 210, and the torque transmission component is a slot 611 located on the inner circumferential surface of the bushing 610. The slot 611 is correspondingly provided with the transmission claw 212, and the slot 611 is suitable for the insertion of the transmission claw 212, thereby realizing the rotation of the output unit 210 with the bushing 610.

[0108] like Figures 1-3As shown, the power tool 100 in this embodiment of the invention also includes a protective housing 115, which is connected to the body 110. A protective space 1151 is formed between the protective housing 115 and the body 110 to accommodate and protect the working attachment 900 located in a non-working position. Specifically, the protective housing 115 is only disposed on the top of the output assembly. One end of the protective housing 115 is pivotally connected to the switching shaft of the switching mechanism 500, and the other end is connected to the body. The protective housing 115 has a stepped shape, conforming to the shape of the switching mechanism and the working attachment in a non-working position, so as to make the overall size of the housing more compact.

[0109] like Figure 3 and Figure 4 As shown, a rotary guide unit 1142 is also provided on the support housing 114, and the switching mechanism 500 is slidably connected to the rotary guide unit 1142. Specifically, in this embodiment of the invention, the rotary guide unit 1142 is a groove provided on the support housing 114, and the bottom of the connecting seat 511 of the switching mechanism 500 is formed on a circular rib that is slidably connected to the groove.

[0110] like Figure 23 As shown, the power tool of the present invention also includes a switching button 830 for switching the output speed of the motor. The switching button 830 is located on the first handle 111, preferably on the side facing the second handle 112, which is also the side facing the user, for easy operation. The switching button 830 integrates an indicator light to display the current speed of the motor. In this embodiment, the motor has at least two switchable speeds, and at least two corresponding indicator lights are provided. The indicator lights are of different lengths to distinguish the different speeds of the motor. In other embodiments, the indicator light color can also be used for differentiation.

[0111] like Figure 23 As shown, the power tool according to an embodiment of the present invention also includes a storage mechanism for storing accessories 910 that are to be used, replaced, or spared. The storage mechanism is a storage compartment 920 or a storage clip 930.

[0112] The storage compartment 920 is located inside the handle and has an openable door and a storage space 921. In this embodiment, the storage compartment is located on the rear side of the second handle 112, and the door folds open towards the user. The accessory 910 is placed in a slot inside the door or disposed in the storage space 921. In other embodiments, the storage compartment 920 may also be the structure described above located in other positions, or it may be a drawer-shaped structure, etc., without limitation.

[0113] The storage clip 930 is located on the surface of the housing and has multiple grooves for placing accessories 910. The accessories 910 are placed in the grooves by snapping them together. Specifically, the storage clip 930 is made of soft rubber and is located below the second handle 112 and behind the connector 113.

[0114] The power tool of this invention operates on the following principle:

[0115] During normal use, the moving part 620 is located in the transmission position 601, and the bushing 610 is connected to the output unit 210 located at the front end. At this time, the torque of the gearbox's transmission shaft 321 can be normally transmitted to the output unit 210.

[0116] When it is necessary to switch the working attachment 900, the user pushes the operating part 624 of the clutch mechanism 600 by hand, so that the moving part 620 moves to the rear end along the straight groove. The bushing 610 then separates from the output unit 210 which is in the working position at this time. When the moving part 620 moves to the top of the straight groove and can no longer move, the moving part 620 is in the annular groove (i.e., the moving part 620 is in the separated position). At this time, the user can rotate the switching mechanism 500 by hand to rotate the output unit in the working position to the non-working position and the output unit in the non-working position to the working position.

[0117] Then, when the user releases their hand, the moving part 620 automatically returns to the transmission position under the action of the biasing force, and the bushing 610 is connected to the output unit which is now in the working position and can perform normal operation.

[0118] This invention, by setting up the aforementioned linked switching mechanism and clutch mechanism, with the clutch mechanism and switching mechanism set up together, realizes the transmission or termination of output through the transmission connection between the clutch mechanism and the body and output mechanism. At the same time, the clutch mechanism and switching mechanism are linked through the first connecting part, locking part and unlocking part, allowing switching rotation to be performed while performing clutch, thereby simplifying the user's operation steps, realizing the user's one-handed clutch switching operation, and improving the user experience.

[0119] In another embodiment of the invention, the locking element includes a switching unit 570, which includes a locking part 571 for restricting the switching mechanism 500 from rotating relative to the body.

[0120] Specifically, such as Figures 11-18As shown, the switching mechanism 500 in this embodiment is a housing structure, preferably a T-shaped sleeve. A pair of mounting portions 510 are provided at both ends of the T-shaped sleeve 560 along the lateral direction. The cavity inside the sleeve 560 housing is used to accommodate the drive shaft, part of the drive gears, and the conversion unit 570. The cavity inside the mounting portion 510 is used to accommodate part of the output unit 210. The conversion unit 570 can also be located at the bottom end of the sleeve 560, and is either fixedly connected to or detachably connected to the bottom end of the sleeve.

[0121] In this embodiment of the invention, the dimension of the sleeve 560 along the axial direction 202 is less than or equal to 100 mm; this can be understood as follows: Figure 16 The longitudinal dimension L3 of the sleeve 560 shown is less than or equal to 100 mm. The dimension of the sleeve 560 along the direction perpendicular to both the output axis 202 and the switching axis 201 is less than or equal to 45 mm, which can be understood as follows: Figure 16 The maximum dimension L4 of the sleeve 560 shown in the left-right direction is less than or equal to 45 mm.

[0122] See also Figure 12 and Figure 13 The support housing 114 is located on top of the first handle 111. The support housing 114 includes an output port 1141. The clutch mechanism 600 is connected to the output unit 210 via the output port 1141. The switching mechanism 500 is pivotally connected to the support housing 114. The sleeve 560 is sleeved on the outside of the support housing 114 and can rotate around the support housing 114. Therefore, it can be understood that the sleeve 560 and the support housing 114 are approximately coaxial, and their axis is approximately coincident with the switching axis 201.

[0123] The sleeve 560 includes a support boss provided on the mounting part 510, wherein the support boss has a through circular mounting hole to be adapted to the output unit 210, and the output unit 210 is supported in the mounting hole of the support boss.

[0124] like Figure 18As shown, the conversion unit 570 is a ring frame rotatable around the switching axis 201. Locking grooves 571 are radially distributed within the ring frame. Specifically, the locking grooves 571 include several grooves radially distributed on the ring frame. An opening is provided on one radial side of the locking groove 571 to allow the moving member 620 to disengage from the ring frame. In this embodiment, the locking groove 571 is a radially penetrating straight groove, meaning that both the inner and outer ends of the locking groove 571 have openings. The moving member 620 can move radially inward from the locking groove 571 to the inner side of the ring frame, thereby disengaging from the ring frame and releasing the rotational restriction on the ring frame. Of course, the locking groove can also be configured with an inner opening. In other embodiments, the conversion unit 570 can also be elliptical or other shapes, or a combination structure of at least two arc-shaped strips fitted into a circular or arc-shaped groove. In this case, the locking groove can be the gap formed between each arc-shaped strip.

[0125] The ring frame is also provided with a mounting slot 572 for connection to the switching mechanism 500, see Appendix Figure 12 A boss 561 is provided on the inner wall of the bottom opening of the sleeve 560, wherein the boss 561 is adapted to be inserted into the mounting groove 572, thereby realizing the installation and fixation of the conversion unit 570.

[0126] like Figure 17 As shown, in this embodiment, the clutch mechanism 600 includes a bushing 610 and a moving member 620, wherein the moving member 620 is connected to the bushing 610, and the bushing 610 is movably connected to the drive shaft 321 and can be connected to or separated from the output unit 210. The output unit 210, the bushing 610, and the drive shaft 321 are coaxially arranged, and the moving member 620 drives the bushing 610 to move axially along the drive shaft 321.

[0127] like Figure 14 , 15 As shown, the clutch mechanism in this embodiment of the invention further includes an operating member 640. The operating member 640 drives the moving member 620 to move. When the moving member 620 is in the transmission position, it engages with the locking groove 571 and restricts the rotation of the conversion unit 520. When the moving member 620 is in the disengaged position, it disengages from the locking groove 571 and allows the conversion unit 520 to rotate. Specifically, the operating part 640 is a button located below the switching mechanism 500 at the front of the machine body.

[0128] The clutch mechanism 600 in this embodiment also includes a biasing force member 630 disposed at the end of the operating member 640. The biasing force member 630 applies a biasing force to the operating member 640 to drive the clutch mechanism to the transmission position. When the user releases the operating member 640, the moving member 620 and the operating member 640 can return to the transmission position under the action of the biasing force member 630.

[0129] Specifically, such as Figure 17As shown, the movable member 620 is radially transversely disposed on the bushing 610. The movable member 620 is a shift fork, including a shift lever 625 and a pawl 626, wherein the shift lever 625 and the pawl 626 are integrally formed, and the pawl 626 is formed at the top of the shift lever 625. Figure 13 As shown, the corresponding bushing 610 is provided with a groove 612, specifically an annular groove dug along the outer periphery of the bushing 610. The pawl 626 is engaged in the groove 612, and the lever 621 passes through the locking groove and is connected to the operating member 620.

[0130] The power tool in this embodiment works on the following principle:

[0131] During normal use, the moving part 620 is in the transmission position, and the bushing 610 is connected to the output unit 210 located at the front end. At this time, the torque of the gearbox's transmission shaft 321 can be normally transmitted to the output unit 210.

[0132] When it is necessary to switch the working attachment 900, the user presses the operating part 640 with his hand, which drives the moving part 620 to move radially inward along the locking part 521. The bushing 610 then separates from the output unit 210, which is in the working position at this time, and the output unit 210 cuts off the output power. When the moving part 620 moves to the disengaged position after disengaging from the locking part 521, the moving part 620 is in the disengaged position. The user can apply a force to the switching mechanism 500, the output unit, or the working attachment by hand or with the help of external objects such as walls or workbenches. The switching mechanism 500 rotates, thereby rotating the output unit in the working position to the non-working position and rotating the output unit in the non-working position to the working position.

[0133] Then, the user releases their hand, and the operating component 640 automatically returns to its initial position under the action of the biasing force component. At this time, the moving component 620 returns to the transmission position, and the bushing 610 is connected to the output unit 210, which is now in the working position. The output unit 210 can output power to the outside and perform normal operation.

[0134] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A power tool, comprising: a machine body comprising a first handle; an output assembly arranged at an end of the first handle; a power mechanism comprising a motor and a transmission unit for driving the output assembly; a switch assembly arranged on the machine body for controlling the power mechanism; characterized in that: the output assembly comprises at least two spaced output units for connecting working accessories; further comprising: a switching mechanism comprising a mounting unit, the output units are supported on the mounting unit, the switching mechanism is arranged at an end of the first handle and has a switching axis around which the switching mechanism rotates; a clutch mechanism movably connected with the switching mechanism, the clutch mechanism has a transmission position for transmitting the output units and the transmission unit, and a separation position for being separated from the switching mechanism, when being in the separation position, the switching mechanism can rotate relative to the machine body.

2. The power tool of claim 1, wherein, The clutch mechanism or the transmission unit is at least partially arranged between the two spaced output units.

3. The power tool of claim 1, wherein, The clutch mechanism comprises a sleeve and a moving piece, the moving piece is connected with the sleeve, the sleeve is movably connected with the transmission unit and is driven by the moving piece to connect or separate with the output units.

4. The power tool of claim 3, wherein, The transmission unit comprises a transmission shaft, the transmission shaft comprises a clutch transmission part, the sleeve is movably connected with the clutch transmission part, the transmission shaft transmits torque to the sleeve through the clutch transmission part; the clutch transmission part comprises a non-circular shaft arranged at an end of the transmission shaft, the non-circular shaft is movably connected with a non-circular hole on the sleeve; the output units, the sleeve and the transmission shaft are coaxially arranged, the transmission position and the separation position are distributed along the axial direction of the transmission shaft, and the moving piece drives the sleeve to move along the axial direction of the transmission shaft.

5. The power tool of claim 3, wherein, The switching mechanism comprises a locking part and an unlocking part, the clutch mechanism is matched with the locking part and limits the rotation of the switching mechanism when being in the transmission position, and the clutch mechanism is separated from the locking part to allow the rotation of the switching mechanism when being in the separation position.

6. The power tool of claim 5, wherein, The locking part comprises a plurality of straight grooves, the unlocking part is a circular groove, the circular groove is coaxially arranged with the switching axis, and one end of each of the plurality of straight grooves intersects with the circular groove.

7. The power tool of claim 6, wherein, The moving piece comprises a first connecting part, the first connecting part is adapted to be inserted into the straight grooves and the circular groove, the circular groove forms the separation position, and the straight grooves form the transmission position.

8. The power tool of claim 5, wherein, The switching mechanism further comprises a rotating unit connected with the mounting unit; the rotating unit is an annular frame which can rotate around the switching axis.

9. The power tool of claim 8, wherein, The locking part comprises a locking groove radially distributed along the annular frame, and the locking groove makes the clutch mechanism in the transmission position.

10. The power tool of claim 1, wherein, The switching mechanism is a U-shaped support, the U-shaped support comprises a connecting seat and a pair of side walls, and the connecting seat is connected and arranged between the pair of side walls.

11. The power tool of claim 3, wherein, The other end of the shaft sleeve is provided with a torque transmission member, the output unit comprises a clamping part and a connecting part, the clamping part is used for installing the working accessory, and the connecting part is in transmission connection with the torque transmission member; the torque transmission member comprises a clamping groove provided on the shaft sleeve, and the connecting part comprises a transmission claw provided on the output unit, and the clamping groove is suitable for the transmission claw to be inserted.

12. A power tool, comprising: a machine body comprising a first handle; an output assembly arranged at an end of the first handle; a power mechanism comprising a motor and a transmission unit driving the output assembly to move; a switch assembly arranged on the machine body and controlling the power mechanism; characterized in that the output assembly comprises at least two spaced output units, the output units are used for connecting working accessories, and the output assembly can rotate around a switching axis to switch the output units to a working position or a non-working position; further comprising: a clutch mechanism, the clutch mechanism has a transmission position in transmission connection with the output units and the transmission unit, and a separation position in disconnection with the output assembly, when in the separation position, the output assembly can rotate relative to the machine body.

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