Electric tool

Abstract

The utility model provides an electric tool which comprises a machine shell, the machine shell is internally provided with a motor used for providing first driving force, the motor comprises a motor shaft, and the motor shaft is provided with a first gear; the motion conversion mechanism is used for receiving the first driving force and converting the first driving force into second driving force, the motion conversion mechanism comprises a transmission shaft, and a second gear in meshing transmission with the first gear is arranged on the transmission shaft; the impact mechanism receives the second driving force and can generate impact in the direction parallel to the transmission shaft so as to strike the working head, the transmission shaft is perpendicular to the motor shaft, and the second gear is closer to the handle than the first gear. According to the electric tool, the second gear is arranged on the side, close to the handle, of the axis of the motor shaft, the blank area on the right side of the motor shaft is filled up, and therefore the machine core layout is more compact, the overall length of the electric tool can be reduced, the overall weight is reduced, disassembly and assembly are convenient, and the use experience of a user is improved.

Description

Technical Field

[0001] This disclosure relates to the field of tool technology, and more particularly to a power tool. Background Technology

[0002] Electric hammers and other power tools are widely used primarily for drilling holes in hard materials such as concrete, brick, and stone. This means that an electric hammer outputs both torque and impact force. To meet more user needs, existing electric hammers can output torque or simultaneously output torque and reciprocating impact force. However, current electric hammers on the market employ complex internal transmission structures, increasing the overall size and weight of the machine, making disassembly and assembly very inconvenient and resulting in a poor user experience. Utility Model Content

[0003] In view of this, the purpose of this disclosure is to provide a power tool that can reduce the overall length of the power tool and improve the user experience.

[0004] For the purposes described above, this disclosure provides an electric tool, comprising:

[0005] The casing is equipped with a handle for gripping;

[0006] An electric motor is disposed within the housing and used to provide a first driving force. The electric motor includes a motor shaft on which a first gear is disposed.

[0007] A motion conversion mechanism is used to receive the first driving force and convert it into a second driving force. The motion conversion mechanism includes a transmission shaft on which a second gear is disposed.

[0008] An impact mechanism is used to receive the second driving force and generate an impact in a direction parallel to the drive shaft to strike the working head;

[0009] The drive shaft is arranged perpendicularly to the motor shaft, and the second gear is capable of meshing with the first gear and the second gear is closer to the handle than the first gear.

[0010] In a preferred embodiment, both the drive shaft and the second gear are clearance-fitted with the connector.

[0011] In a preferred embodiment, one of the second gear and the drive shaft is provided with a rib, and the other is provided with a groove. The second gear and the drive shaft are connected by the rib and the groove.

[0012] In a preferred embodiment, a connecting member is provided between the drive shaft and the second gear, and the second gear drives the drive shaft to rotate through the connecting member. The drive shaft has a first groove, and the second gear has a second groove corresponding to the first groove. The connecting member engages with the first and second grooves, thereby connecting the second gear to the drive shaft.

[0013] In a preferred embodiment, the first gear and the second gear are respectively configured as bevel gears, and the tooth surface of the second gear is disposed on the side facing the impact mechanism.

[0014] In a preferred embodiment, the housing includes a movement housing and a component housing detachable from the movement housing; an installation assembly is provided inside the housing, the installation assembly including a first mounting member and a second mounting member that are detachable from each other, the first mounting member being connected to the housing, and the second mounting member being connected to the drive shaft.

[0015] In a preferred embodiment, when the component housing is removed from the movement housing and the second mounting member is separated from the first mounting member, the second gear is operably removed from the housing.

[0016] In a preferred embodiment, the component housing includes a handle housing and a motor housing; when the second mounting member is separated from the first mounting member, the drive shaft and the components mounted on the drive shaft can be removed from the housing.

[0017] In a preferred embodiment, the first mounting component is configured as a mounting box with a first connection port, and the second mounting component is configured as a mounting plate connected to the mounting box; the drive shaft and the components disposed on the drive shaft are located inside the mounting box, the mounting plate is capable of sealing the first connection port, the mounting plate is provided with a second connection port, and a cover plate for sealing the second connection port; a bearing is disposed at the end of the drive shaft away from the impact mechanism, the mounting plate is provided with a bearing chamber supporting the bearing, and the drive shaft is fastened to the bearing.

[0018] As can be seen from the above, the power tool provided in this disclosure fills the blank area on the right side of the motor shaft by setting the second gear on the transmission shaft on the side of the motor shaft axis close to the handle, thereby making the mechanism layout more compact, reducing the overall length and weight of the power tool, making it easier to assemble and disassemble, and improving the user experience.

[0019] Because the housing is provided with a core housing and a component housing that can be separated from the core housing, and the housing is provided with a first mounting component and a second mounting component that are interconnected and detachable, after the component housing is separated from the core housing, the second mounting component can be separated from the first mounting component, thereby allowing the large gear and the drive shaft connected to it to be moved out or in from the housing for easy replacement or maintenance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of an electric hammer structure according to an embodiment of this application;

[0022] Figure 2 This is another structural schematic diagram of the electric hammer according to an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of an electric hammer structure in the prior art;

[0024] Figure 4 This is a schematic diagram of the structure of the first and second mounting parts after the movable portion of the housing is installed according to an embodiment of this application;

[0025] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB section;

[0026] Figure 6 This is a schematic diagram of the installation structure of the first and second mounting components according to an embodiment of this application;

[0027] Figure 7 This is a schematic diagram of the transmission shaft, connector, and second gear according to an embodiment of this application.

[0028] Figure label:

[0029] 1. Housing, 10. Bearing, 100. Impact Mechanism, 11a, 11b. Fasteners, 110. Guide, 12. Cover Plate, 120. Impact Mechanism, 130. Working Head, 13. Pressure Ring, 14. Positioning Sleeve, 15. Motor Cylinder, 16. Battery Pack, 17. Snap Ring, 18. Bearing, 2. Motor, 20. Handle, 200. Motion Conversion Mechanism, 210. Rocker Bearing, 3. Motor Shaft, 300. Impact Rod, 4. First Gear / Small Bevel Gear, 4a-First Gear Tooth Surface, 400. Blank Area, 5. Drive Shaft, 51. First Groove, 6, 6'. Second Gear / Large Bevel Gear, 6a, 6a'. Second Gear Tooth Surface, 61. Second Groove, 7. Connector, 8. Mounting Box, 81. First Connecting Port, 9. Mounting Plate, 91. Second Connecting Port, 92. Bearing Chamber. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0031] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in the embodiments of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] like Figure 1 As shown, this application provides a power tool, taking an electric hammer as an example, including a housing 1, with a handle 20 for operation and gripping on the housing 1. Inside the housing 1 are a motor 2, a motion conversion mechanism 200, and an impact mechanism 100. The handle 20 has a trigger 21 for controlling the motor 2. The motor 2 provides a first driving force and includes a motor shaft 3 with a first gear 4 mounted on it. The motion conversion mechanism 200 receives the first driving force and converts it into a second driving force. The motion conversion mechanism 200 includes a transmission shaft 5 with a second gear 6 meshing with the first gear 4. The impact mechanism 100 receives the second driving force and generates an impact in a direction M parallel to the transmission shaft 5 to strike the working head (not shown in the figure).

[0033] The electric hammer in this embodiment is a vertical electric hammer. The motor 2 is vertically installed inside the housing 1. The motion conversion mechanism 200 includes a rocker arm bearing 210 mounted on the transmission shaft 5, which is perpendicular to the motor shaft 3. The first gear 3 is horizontally mounted on the motor shaft 3, and the second gear 6 is vertically mounted on the transmission shaft 5. The first gear 4 and the second gear 6 are both bevel gears, i.e., the first gear 4 is a small bevel gear and the second gear is a large bevel gear. The impact mechanism 100 may include a guide member 110, an impact member 120, and a striking rod 300. The guide member 110 has a receiving cavity along its axial direction. The impact member 120 is disposed in the receiving cavity and can reciprocate axially within the receiving cavity. Compressed air is used between the guide member 110 and the impact member 120 to drive the impact member 120 to reciprocate and impact the striking rod 300, thereby driving the striking rod 300 to impact the working head, which in turn causes the working head to move along the axial direction of the guide member 110 to output impact force outward. Among them, the guide component 110 can be a cylinder or air cylinder, etc., and the impact component 120 can be a hammer or piston, etc.

[0034] Further reference Figure 2 The tooth surface 4a of the first gear 4 is inclined around the motor shaft axis X, and the tooth surface 6a of the second gear 6 is inclined around the transmission shaft axis Y, with the tooth surface 6a located on the side of the second gear 6 facing the impact mechanism 100. The first gear 3 and the second gear 6 mesh with each other through their respective tooth surfaces 3a and 6a, causing the motor 2 to drive the transmission shaft 5 to rotate. The second gear 6 is closer to the handle 20 than the first gear 3, that is, the second gear 6 is located on the right side of the motor shaft axis X.

[0035] like Figure 3 As shown, in a prior art electric hammer, the motor 2 is vertically mounted on the housing 1. A small bevel gear 4 is mounted on the motor shaft 3, and a large bevel gear 6' is vertically mounted. The tooth surface 6a' of the large bevel gear 6', which meshes with the small bevel gear 4, is located on the side opposite to the working head 130. The large bevel gear 6' is closer to the impact mechanism 100 than the small bevel gear 4, that is, the large bevel gear 6' is located to the left of the motor axis X'. Typically, the motor axis X is designed to be centered in the motor cylinder or vertical housing. If the large bevel gear 6' is located to the left of the motor axis X and meshes with the small bevel gear 4, a blank area 400 is formed to the right of the motor axis X within the housing 1. The existence of this blank area 400 reduces the utilization rate of the internal space of the machine body, and the internal layout of the machine body is not compact enough. In addition, a limiting part 6b is provided on the large bevel gear 6' adjacent to the rocker arm bearing in the motion conversion mechanism 200 to limit the rocker arm bearing in the axial direction. The limiting part 6b occupies a certain axial length. This arrangement makes the overall length of the power tool longer, which indirectly increases the weight of the machine and the burden on the user during operation, resulting in a poor user experience.

[0036] The power tool disclosed in this application is equivalent to mirroring the large bevel gear 6 on the drive shaft 5 relative to the large bevel gear 6' in the prior art with respect to the motor axis X. That is, the large bevel gear 6 is located on the right side of the motor axis X, filling the blank area 400 on the right side of the electric hammer motor axis in the prior art. This arrangement allows the drive shaft 5, the components connected to the drive shaft 5, and the motion-to-motion conversion mechanism 200, impact mechanism 100, and other core components to be moved a certain distance towards the handle 20, resulting in a more compact internal structure. The housing 1 can be correspondingly shortened in the axial direction, thereby reducing the overall axial length of the machine.

[0037] In one embodiment, the limiting part 6b of the large bevel gear 6' in the prior art is further shortened, and a positioning sleeve 14 with positioning function is added between the rocker arm bearing and the large bevel gear 6 to replace the function of the limiting part 6b. The axial dimension occupied by the positioning sleeve 14 is approximately equal to the axial dimension of the limiting part 6b.

[0038] This design shortens the overall axial dimension of the electric hammer by 12mm, thereby reducing the overall length of the hammer and correspondingly reducing the weight of the housing, effectively lowering the overall weight and improving the user experience. Because the large bevel gear 6, located near the end of the drive shaft 5, is close to the handle 200 and to the right of the motor axis X, this arrangement facilitates the disassembly and assembly of the drive shaft 5 and its components on the housing 1, making maintenance easier.

[0039] Reference Figure 4 As shown, the housing 1 includes a core housing 1a and a component housing that is detachable from the core housing 1a. The core housing 1a houses core components such as a motion conversion mechanism 200 and an impact mechanism 100. The component housing includes a motor housing 1b that houses the motor 2 and a handle housing 20a that forms the handle 20. When maintenance of the core components is required, the component housing can be detached from the core housing 1a.

[0040] In one embodiment, the movement housing 1a is an integral cylindrical shape, and the motor housing 1b and handle housing 20a are integrally formed and are two half-shells connected together by fasteners. When maintenance of the movement components is required, one of the half-shells can be removed from the housing 1.

[0041] In one embodiment, the interior of the housing 1 includes a motor cylinder 15 for mounting the motor 2. The motor cylinder 15 can be snapped into the housing 1. When the motor 2 is installed and fixed inside the housing 1, the motor 2 can be installed inside the housing 1 by first fixing the motor 2 inside the motor cylinder 15 and then directly snapping the motor cylinder 15 into the housing 1. This arrangement facilitates the quick installation and removal of the motor 2 from the housing 1.

[0042] Further reference Figures 5 to 7 The housing 1 also contains an installation assembly, including a first mounting component and a second mounting component that are interconnected and detachable. When the second mounting component is separated from the first mounting component, the second gear 6 can be operably removed from the housing 1. In one embodiment, the first mounting component is configured as a mounting box 8 with a first connection port 81, and the second mounting component is configured as a mounting plate 9 for sealing the first connection port 81. At least a portion of the drive shaft 5 and the components mounted on the drive shaft 5 are located inside the mounting box 8; a bearing chamber 92 is formed on the mounting plate 9 facing the inside of the first connection port 81 to support the bearing 10; the mounting plate 9 is provided with a second connection port 91 and a cover plate 12 for sealing the second connection port 91, wherein the cover plate 12 is detachably connected to the mounting plate 9. A plurality of first threaded holes are provided on the outer periphery of the first connection port 81 in the mounting box 8, and a plurality of second threaded holes are also provided on the mounting plate 9 for connecting with the first threaded holes. The first threaded holes and the second threaded holes can be connected by fasteners, thereby enabling the installation or separation of the mounting plate 8 from the mounting box 9. Both the mounting box 8 and the mounting plate 9 are made of aluminum alloy or magnesium alloy to ensure the strength and stability of the movement.

[0043] In one specific embodiment, a threaded hole is provided at the end of the drive shaft 5 away from the impact mechanism 100. A washer is provided on the fastener 11. The fastener 11 is connected to the drive shaft 5 by screwing into the threaded hole. As the fastener 11 is screwed in, it gradually drives the washer to abut against the end face of the drive shaft 5, thereby fixing the fastener 11 to the bearing 10 through the washer, effectively preventing the drive shaft 5 from shaking relative to the bearing 10. Preferably, the fastener 11 is a rounded corner bolt or a hexagonal bolt. The cover plate 12 is also provided with a threaded hole. The cover plate 12 is fixed to the drive shaft 5 by the cooperation of bolts and threaded holes. The cover plate 12 helps to retain the lubricating grease in the bearing 10 in the second connection port 91, effectively preventing oil leakage from the power tool.

[0044] When the drive shaft 5 is in the assembly position, its front end is rotatably supported on the housing 1 by bearing 18, and its rear end is rotatably supported on the mounting plate 9 by bearing 10. A pressure ring 13 is provided on the side of bearing 10 near the large bevel gear 6. The bearing 10 and the pressure ring 13 are fixedly connected to the rear end of the drive shaft 5 by fastener 11a. One side of the large bevel gear 6 abuts against bearing 10, and the other side abuts against retaining ring 17, thereby limiting the large bevel gear 6 in the axial direction of the drive shaft 5. The mounting plate 9 and the mounting box 8 are fastened and limited by fastener 11b, and the cover plate 12 seals the second connection port 91.

[0045] When the large bevel gear on the drive shaft 5 needs to be replaced or maintained due to wear or other reasons, maintenance can be performed by separating the mounting plate 9 from the mounting box 8. At this time, simply remove a half-shell from the housing 1, then remove the cover plate 12 from the mounting plate 9, thus exposing the second connection port 91. Loosen the fastener 11a to release the fastening limit between the bearing 10 and the drive shaft 5, and loosen the fastener 11b to release the fastening limit between the mounting plate 9 and the mounting box 8. Then, the mounting plate 9, along with the bearing 10 fixed to the mounting plate 9 and the large bevel gear 6 mounted on the drive shaft 5, can be moved into or out of the mounting box 8 through the first mounting port 81. Since the large bevel gear 6 is located on the right side of the motor shaft axis X, it will not be interfered with by the first bevel gear 4 when moved out of the first mounting port 81. When the size of the first connection port 81 on the mounting box 8 meets certain requirements, components such as the rocker arm bearing connected to the drive shaft 5 can be separated from the first mounting port 81 along with the drive shaft 5. The quick separation of the drive shaft 5 from the housing 1 makes maintenance simple and convenient, thereby reducing maintenance costs.

[0046] It is important to understand that in the traditional structure, the mounting box 8 and the mounting plate 9 are an integral structure that cannot be separated, occupying a large space inside the housing 1. When disassembling or assembling smaller parts on the drive shaft 5, it is also necessary to disassemble the entire mounting assembly from the housing 1. This operation is troublesome, time-consuming, and labor-intensive, increasing the maintenance cost of power tools.

[0047] In a preferred embodiment, the cover plate 12 may not be installed on the mounting plate 9. Without the cover plate 12, the disassembly and assembly of the drive shaft 5 will be more convenient and quick.

[0048] like Figure 5 As shown, in one embodiment, a bearing 10 is provided at the end of the transmission shaft 5 away from the impact mechanism 100. The bearing 10 is sleeved on the transmission shaft 5, and a retaining ring 17 for buffering impact is provided on the transmission shaft 5. In the axial direction of the transmission shaft 5, a second gear 6 is disposed between the retaining ring 17 and the bearing 10. An annular groove is provided in the circumferential direction of the transmission shaft 5, and the retaining ring 17 is engaged in the annular groove to ensure that the second gear 6 does not misalign with the transmission shaft 5 in the axial direction when driving the transmission shaft 5 to rotate, or the misalignment in the axial direction is small, so that the second gear 6 and the transmission shaft 5 always maintain a contact relationship in the circumferential direction. The retaining ring 17 can be an open C-shape, a semi-circular ring, or a closed circular ring, etc. If the retaining ring 17 is a C-shape or a semi-circular semi-open shape, hooks can be provided at both ends for easy disassembly and assembly.

[0049] In one embodiment, the second gear 6 is clearance-fitted with the drive shaft 5. This allows the second gear 6 to be easily removed from the drive shaft 5 if it is damaged, and also facilitates the removal of the second gear 6 if other components on the drive shaft 5 are damaged, preventing the second gear 6 from interfering with the disassembly of other components.

[0050] In a preferred embodiment, one of the second gear 6 and the drive shaft 5 is provided with a rib, and the other is provided with a groove. The second gear and the drive shaft are connected by the rib and the groove. Along the axial direction of the drive shaft 5, a rib or groove is provided on the inner ring of the second gear 6, and correspondingly, a groove or rib is provided on the drive shaft 5. Through the cooperation of the rib and the groove, the second gear 6 can drive the drive shaft 5 to rotate circumferentially.

[0051] like Figure 7 As shown, in one embodiment, a connecting member 7 is provided between the drive shaft 5 and the second gear 6, and the second gear 6 drives the drive shaft 5 to rotate through the connecting member 7. Since the second gear 6 and the drive shaft 5 are in clearance fit, this disclosure achieves the second gear 6 driving the drive shaft 5 to rotate circumferentially along the drive shaft 5 by providing a connecting member 7 between the drive shaft 5 and the second gear 6.

[0052] In a preferred embodiment, both the drive shaft 5 and the second gear 6 are clearance-fitted with the connecting member 7. Specifically, the connecting member 7 is a rigid key. The drive shaft 5 has a first groove 51, and the second gear 6 has a second groove 61. The connecting member 7 is clearance-fitted with the first groove 51 and the second groove 61 respectively, so as to facilitate quick assembly and disassembly of the connecting member 7 from the drive shaft 5 and the second gear 6. During installation, part of the connecting member 7 is located in the first groove 51 and part is located in the second groove 61, so that when the second gear 6 rotates, it can drive the drive shaft 5 to rotate circumferentially along the drive shaft 5. The extension direction of the second groove 61 is consistent with the axial direction of the drive shaft 5, and the second groove 61 is arranged along the axial direction of the drive shaft 5 and passes through the inner ring of the second gear 6, so that when disassembling the second gear 6, the second gear 6 can be moved along the axial direction of the drive shaft 5 to remove the second gear 6. Preferably, the connecting member 7 can be a circular key or a square key.

[0053] The electric hammer disclosed in this application can be powered by either DC or AC. In one embodiment, a battery pack 16 can be installed on the housing 1. The battery pack 16 can be detachably connected to the housing 1, and when the battery pack 16 is installed on the housing 1, the battery pack 16 supplies power to the motor. The battery pack 16 can be arranged below the handle 20.

[0054] It should be noted that the above description describes some embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result.

[0055] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this disclosure as described above, which are not provided in detail for the sake of brevity.

[0056] This disclosure is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A power tool, characterized in that, include: The casing is equipped with a handle for gripping; An electric motor is disposed within the housing and used to provide a first driving force. The electric motor includes a motor shaft on which a first gear is disposed. A motion conversion mechanism is used to receive the first driving force and convert it into a second driving force. The motion conversion mechanism includes a transmission shaft on which a second gear is disposed. An impact mechanism is used to receive the second driving force and generate an impact in a direction parallel to the drive shaft to strike the working head; The drive shaft is arranged perpendicularly to the motor shaft, and the second gear is capable of meshing with the first gear and the second gear is closer to the handle than the first gear.

2. The power tool according to claim 1, characterized in that, The second gear is clearance-fitted with the drive shaft.

3. The power tool according to claim 1 or 2, characterized in that, One of the second gear and the drive shaft is provided with a rib, and the other is provided with a groove. The second gear and the drive shaft are connected by the rib and the groove.

4. The power tool according to claim 1 or 2, characterized in that, A connecting member is provided between the drive shaft and the second gear, and the second gear drives the drive shaft to rotate through the connecting member.

5. The power tool according to claim 4, characterized in that, The drive shaft has a first groove, and the second gear has a second groove corresponding to the first groove. The connector engages with the first groove and the second groove, and the second gear is connected to the drive shaft through the connector.

6. The power tool according to claim 1, characterized in that, The first gear and the second gear are respectively configured as bevel gears, and the tooth surface of the second gear is located on the side facing the impact mechanism.

7. The power tool according to claim 1, characterized in that, The housing includes a core housing and a component housing that is detachable from the core housing; an installation assembly is provided inside the housing, the installation assembly includes a first installation member and a second installation member that are detachable from each other, the first installation member is connected to the housing, and the second installation member is connected to the drive shaft.

8. The power tool according to claim 7, characterized in that, When the component housing is removed from the movement housing and the second mounting member is separated from the first mounting member, the second gear is operably removed from the housing.

9. The power tool according to claim 8, characterized in that, The component housing includes a handle housing and a motor housing; when the second mounting component is separated from the first mounting component, the drive shaft and the components mounted on the drive shaft can be removed from the housing.

10. The power tool according to claim 9, characterized in that, The first mounting component is configured as a mounting box with a first connection port, and the second mounting component is configured as a mounting plate connected to the mounting box; the drive shaft and the components disposed on the drive shaft are located inside the mounting box, the mounting plate can block the first connection port, the mounting plate is provided with a second connection port, and a cover plate for blocking the second connection port; a bearing is disposed at the end of the drive shaft away from the impact mechanism, the mounting plate is provided with a bearing chamber supporting the bearing, and the drive shaft is fastened to the bearing.

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