Cutting tool

Abstract

The application discloses a cutting tool, which comprises a driving device configured to rotate a saw blade, a bottom plate having an upper surface and a lower surface configured to abut against a cutting material, a main body configured to accommodate at least part of the driving device and connected to the upper surface, a handle configured to be at least partially located at a rear of the main body, and a joint configured to detachably mount a battery pack, wherein at least part of the battery pack is located above the driving device, and the lower surface defines a second plane, and a projection of the battery pack and the driving device on the second plane at least partially overlaps. The cutting tool has a reasonable battery pack arrangement and is convenient for user operation.

Description

Technical Field

[0001] This application relates to a cutting tool, specifically a power saw. Background Technology

[0002] Cutting tools use a rotating toothed saw blade to cut various materials, such as wood, fiberboard, and plastics. A cutting tool typically consists of a body and a base plate that contacts the material being cut. A power saw is one type of cutting tool. In a power saw, the handle for the user to grip extends rearward relative to the body. Cutting tools typically use a battery pack as their power source. However, for existing cutting tools, the location and installation of the battery pack are not ideal, the cutting tools are large, and they are relatively inconvenient for users to operate. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this application is to provide a cutting tool that is compact in structure and easy to operate.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] This application provides a cutting tool, comprising: a drive unit for driving a saw blade to rotate; a base plate having an upper surface and a lower surface, the lower surface being configured to abut against the material being cut; a body housing at least a portion of the drive unit and connected to the upper surface; a handle at least partially disposed behind the body; and a joint for detachably mounting a battery pack; characterized in that at least a portion of the battery pack is located above the drive unit; the lower surface defines a second plane, and the projection of the battery pack and the drive unit onto the second plane at least partially overlaps.

[0006] In some embodiments, the saw blade defines a first plane; the battery pack is configured to be mounted to the joint along a second straight line; the second straight line is substantially parallel to the first plane; the second straight line forms an angle with the second plane.

[0007] In some embodiments, the included angle is greater than or equal to 30 degrees and less than or equal to 75 degrees.

[0008] In some embodiments, the included angle is greater than or equal to 45 degrees and less than or equal to 60 degrees.

[0009] In some embodiments, the joint includes a mounting surface that is erected relative to the base plate and extends substantially perpendicularly to the first plane.

[0010] In some embodiments, the cutting tool has a front end and a back end, the distance between the front end and the back end being greater than or equal to 400 mm and less than or equal to 480 mm.

[0011] In some embodiments, the cutting tool has a highest point and a lowest point, the distance between the highest point and the lowest point being greater than or equal to 190 mm and less than or equal to 240 mm.

[0012] In some embodiments, the battery pack has a voltage greater than or equal to 18V and less than or equal to 60V.

[0013] In some embodiments, the weight of the cutting tool is greater than or equal to 3.8 kg and less than or equal to 4.8 kg.

[0014] In some embodiments, the cutting tool includes a secondary handle, which includes a second grip portion configured for a user to hold; the second grip portion surrounds a grip space for accommodating the user's palm, the grip space having a dimension greater than or equal to 20 mm and less than or equal to 120 mm in the thickness direction of the user's palm.

[0015] This application also provides a cutting tool, comprising: a drive unit for driving a saw blade to rotate; a base plate having an upper surface and a lower surface, the lower surface being configured to abut against the material to be cut; a body housing the drive unit and connected to the upper surface; a handle at least partially disposed behind the body; and a joint for detachably mounting a battery pack; characterized in that the saw blade defines a first plane; the battery pack is configured to be mounted to the joint along a first straight line; the saw blade has a straight-cutting state substantially perpendicular to the base plate, wherein in the straight-cutting state, the first plane forms an angle with the first straight line, the angle being greater than or equal to 0 degrees and less than or equal to 85 degrees.

[0016] In some embodiments, the included angle is greater than or equal to 15 degrees and less than or equal to 75 degrees.

[0017] In some embodiments, the included angle is greater than or equal to 30 degrees and less than or equal to 60 degrees.

[0018] In some embodiments, the joint includes a mounting surface raised relative to the base plate, the mounting surface extending obliquely relative to the first plane.

[0019] In some embodiments, the coupling includes a guide mechanism extending on the mounting surface, the guide mechanism being configured to engage with the battery pack.

[0020] In some embodiments, the base plate includes a front end and a rear end, and the handle includes a first grip portion configured for a user to grasp, with at least a portion of the first grip portion protruding from the rear end.

[0021] This application also provides a cutting tool, comprising: a drive unit for driving a saw blade to rotate; a base plate having an upper surface and a lower surface, the lower surface being configured to abut against the material being cut; a body housing the drive unit and connected to the upper surface; a handle at least partially disposed behind the body; and a joint for detachably mounting a battery pack; characterized in that the joint includes: an opening that opens in a left-right direction toward a direction away from the saw blade; a mounting surface extending substantially parallel to the base plate, the mounting surface being disposed below the battery pack; and the lower surface defining a second plane, the projection of the battery pack and the mounting surface onto the second plane at least partially overlapping.

[0022] In some embodiments, the coupling includes a guide mechanism extending on the mounting surface, the guide mechanism being configured to engage with the battery pack.

[0023] In some embodiments, the distance between the mounting surface and the upper surface is greater than or equal to 10 mm and less than or equal to 40 mm.

[0024] In some embodiments, the joint includes: a front wall disposed in a forward direction; a rear wall disposed in a rearward direction, the rear wall being behind the front wall; a lower wall disposed in a downward direction, at least a portion of the lower wall being located between the front wall and the rear wall in a front-rear direction; the front wall, the rear wall, and the lower wall extend away from the saw blade in a left-right direction and define an opening.

[0025] In some embodiments, the joint includes a reinforcing mechanism configured to increase the strength of the joint.

[0026] In some embodiments, the reinforcement mechanism includes a reinforcing rib disposed in the upper direction of the joint.

[0027] In some embodiments, the joint includes a window portion that opens upwards.

[0028] The advantages of this application are: the structure of the cutting tool has been improved, the battery pack is arranged in a reasonable manner, and it is convenient for users to operate. Attached Figure Description

[0029] Figure 1 This is a left view of a cutting tool with a battery pack installed, according to an embodiment of this application;

[0030] Figure 2 yes Figure 1 A 3D view of the cutting tools in the image;

[0031] Figure 3 yes Figure 1 Right view of the cutting tool section with the battery pack installed;

[0032] Figure 4 yes Figure 1 Top view of the cutting tool with the battery pack installed;

[0033] Figure 5 yes Figure 1 Rear view of the cutting tool with the battery pack installed;

[0034] Figure 6 This is a left view of a cutting tool according to another embodiment of this application;

[0035] Figure 7 yes Figure 6 A 3D view of the cutting tools in the image;

[0036] Figure 8 yes Figure 6 A schematic diagram of the main body and part of the drive mechanism of the cutting tool in the diagram;

[0037] Figure 9 yes Figure 6 A 3D view of the cutting tool without the battery pack installed.

[0038] Figure 10 yes Figure 6 The rear view of the cutting tool;

[0039] Figure 11 yes Figure 6 A three-dimensional view of a battery pack unit using a cutting tool.

[0040] Figure 12 This is a right view of a cutting tool according to another embodiment of this application;

[0041] Figure 13 yes Figure 12 The rear view of the cutting tool in the image;

[0042] Figure 14 This is a right view of a cutting tool according to another embodiment of this application;

[0043] Figure 15 yes Figure 14 The rear view of the cutting tool in the image;

[0044] Figure 16 This is a right view of a cutting tool according to another embodiment of this application;

[0045] Figure 17 yes Figure 16 The rear view of the cutting tool in the image;

[0046] Figure 18 This is a right view of a cutting tool according to another embodiment of this application;

[0047] Figure 19 yes Figure 18 The rear view of the cutting tool in the image;

[0048] Figure 20 This is a perspective view of a cutting tool according to another embodiment of this application;

[0049] Figure 21 yes Figure 20 A top view of the motor and base plate of the cutting tool. Detailed Implementation

[0050] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments. Figure 1 The cutting tool 100 shown can be used by the user to perform cutting operations. For ease of explanation, this embodiment is provided with the following... Figure 2 The vertical, horizontal, and forward / backward directions are shown. In the following description, the direction of cutting movement is considered forward, and the direction from which the user is located is considered backward. Regarding the horizontal direction of components and structures, the horizontal direction is based on the direction from which the user uses the cutting tool 100.

[0051] like Figures 1 to 4As shown, the cutting tool 100 in this embodiment mainly includes: a drive device 11, a base plate 12, a main body 20, and a handle 13. The drive device 11 drives the saw blade 10 to rotate to perform operations on the cutting material (not shown). The rotating saw blade 10 can cut the workpiece or groove the workpiece. In this embodiment, the saw blade 10 is disc-shaped, and the drive device 11 is a motor 111. The motor 111 includes a motor shaft 112, which is connected to the saw blade 10 in a transmission manner. When the motor shaft 112 rotates, the saw blade 10 is driven to rotate by the motor shaft 112. The base plate 12 has an upper surface 121 and a lower surface 122, with the lower surface 122 configured to abut against the cutting material. During the cutting process, the lower surface 122 contacts the cutting material to support the cutting tool 100 and position the cutting tool 100 on the cutting material. The main body 20 houses the drive device 11 and is connected to the upper surface 121. The main body 20 includes a first protective cover 21 and a second protective cover 22. A first guard 21 surrounds the upper half of the saw blade 10. A second guard 22 rotatably surrounds a portion of the lower half of the saw blade 10. A base plate 12 has a generally rectangular groove 123 extending along its long side in a front-rear direction, the groove 123 for passage of a portion of the second guard 22 and a portion of the saw blade 10. A body 20 has a receiving cavity 23 configured to receive at least a portion of the motor 111. A handle 13 is at least partially disposed at the rear of the body 20. The cutting tool 100 also includes a secondary handle 14. The secondary handle 14 is at least partially disposed in front of the handle 13. In some embodiments, the handle 13 includes a first grip 131 configured for a user to grip. When the user uses the cutting tool 100, one hand grips the first grip 131 and the other hand grips the secondary handle 14 to stably operate the cutting tool 100. The base plate 12 includes a front end 124 and a rear end 125. The rear end 125 is located behind the front end 124, and the length from the front end 124 to the rear end 125 is the length of the base plate 12 extending in the front-rear direction. At least a portion of the first grip portion 131 protrudes behind the rear end 125.

[0052] The cutting tool 100 also includes a depth adjustment device 15, which is used to adjust the angle at which the main body 20 pivots relative to the base plate 12 about the depth axis 110a. The first guard 21, the second guard 22, and the saw blade 10 can pivot synchronously relative to the base plate 12 about the depth axis 110a. When the user adjusts the angle at which the main body 20 pivots relative to the base plate 12 about the depth axis 110a, the size of the saw blade 10 protruding from the lower surface 122 is adjusted, which is the cutting depth of the cutting tool 100. The cutting tool 100 also includes an angle adjustment device 16, which is used to change the cutting angle of the saw blade 10. The first guard 21, the second guard 22, and the saw blade 10 can pivot synchronously relative to the base plate 12 about the angle axis 110b. When the user adjusts the angle at which the main body 20 pivots relative to the base plate 12 about the angle axis 110b, the angle at which the saw blade 10 tilts relative to the base plate 12 is adjusted, which is the cutting angle of the cutting tool 100.

[0053] like Figures 2 to 5As shown, the cutting tool 100 also includes a connecting portion 30 configured to detachably mount a battery pack 90. ​​The battery pack 90 provides power to the cutting tool 100. The number of battery packs 90 can be one or more. A battery compartment 31 is formed around the connecting portion 30, configured to accommodate at least a portion of the battery pack 90. ​​At least a portion of the battery pack 90 is located above the drive unit 11. The battery compartment 31 includes an opening 311 opening away from the base plate 12, allowing the battery pack 90 to enter the battery compartment 31. A lower surface 122 defines a second plane 102a, which is substantially parallel to the front-rear direction. The projection of the battery pack 90 onto the drive unit 11 on the second plane 102a at least partially overlaps. Since at least a portion of the battery pack 90 is above the motor 111, and the positions of the battery pack 90 and the motor 111 coincide in the front-rear direction, the overall length of the cutting tool 100 can be shortened, resulting in a compact structure and a visually smaller and more aesthetically pleasing design. The projections of the battery pack 90 and the motor 111 onto the second plane 102a in the front-to-back direction overlap. This helps to bring the center of gravity of the cutting tool 100 closer to the rotation center of the saw blade 10, without compromising the front-to-back weight balance and cutting efficiency of the cutting tool 100. The projections of the battery pack 90 and the motor 111 onto the second plane 102a in the left-to-right direction also overlap. This helps to bring the center of gravity of the cutting tool 100 closer to the width center of the handle 13 in the left-to-right direction, without compromising the left-to-right balance of the cutting tool 100 and providing the user with a good grip. In this embodiment, the saw blade 10 defines a first plane 101a, and the battery pack 90 is configured to be mounted to the joint 30 along a second straight line 102. The second straight line 102 is substantially parallel to the first plane 101a, and the second straight line 102 forms an angle b with the second plane 102a. In this embodiment, the angle b is greater than or equal to 30 degrees and less than or equal to 75 degrees. In other embodiments, the angle b is greater than or equal to 45 degrees and less than or equal to 60 degrees. It should be noted that the second straight line 102 is substantially parallel to the first plane 101a, but differences in the absolute parallelism between the second straight line 102 and the first plane 101a due to normal commercial manufacturing tolerances are not excluded. The battery pack 90 is mounted to the joint 30 along the second straight line 102, but the specific position of the second straight line 102 is not limited, nor is it limited whether the battery pack 90 is mounted to the joint 30 from front to back or from back to front along the second straight line 102. In this embodiment, the battery pack 90 is mounted to the joint 30 from back to front along the second straight line 102. The joint 30 includes a mounting surface 32 that rises relative to the base plate 12, extending substantially perpendicularly to the first plane 101a in the left-right direction. The mounting surface 32 is disposed on the side of the joint 30 near the handle 13.The direction in which the battery pack 90 is installed to the joint 30 forms an angle with the plane defined by the lower surface 122. This results in a shallower depth of the battery compartment 31 in the vertical direction, a longer length of the battery pack 90 extending into the battery compartment 31, and a larger volume of the joint 30 in the front-rear direction relative to the cutting tool 100. This facilitates a lower center of gravity for the cutting tool 100, reducing its overall height. The battery pack 90 is installed at an angle to the joint 30, distributing its weight to the mounting surface 32 and areas outside of it, such as the side of the battery compartment 31 closest to the base plate 12. This allows for the installation of battery packs 90 of different sizes, increases the installation stability of the battery pack 90, and reduces the need to increase the strength of the joint 30.

[0054] The cutting tool 100 has a rearmost end 108 and a rearmost end 109. In this embodiment, the distance between the rearmost end 108 and the rearmost end 109 is greater than or equal to 400 mm and less than or equal to 480 mm. In other embodiments, the distance between the foremost end 108 and the rearmost end 109 is greater than or equal to 430 mm and less than or equal to 460 mm. The distance between the foremost end 108 and the rearmost end 109 is the overall length of the cutting tool 100 in the front-rear direction. The cutting tool 100 also has a highest point 107 and a lowest point 106, the distance between the highest point 107 and the lowest point 106 being greater than or equal to 190 mm and less than or equal to 240 mm. The lowest point 106 is located on the lower surface 102a. The distance between the highest point 107 and the lowest point 106 is the overall height of the cutting tool 100 in the vertical direction when the battery pack 90 is installed, the saw blade 10 is not installed, and the second guard 22 is rotated relative to the base plate 12 to above the base plate 12. The battery pack 90 has a voltage greater than or equal to 18V and less than or equal to 60V. When the cutting tool 100 is fitted with a battery pack 90 with a lower voltage, the battery pack 90 is smaller in size; when the cutting tool 100 is fitted with a battery pack 90 with a higher voltage, the battery pack 90 is larger in size. The weight of the cutting tool 100 is greater than or equal to 3.6kg and less than or equal to 5.2kg. In this embodiment, the weight of the cutting tool 100 is greater than or equal to 3.8kg and less than or equal to 4.8kg. The weight of the cutting tool 100 is the weight of the cutting tool 100 without the battery pack 90 and saw blade 10 installed.

[0055] The cutting tool 100 includes a secondary handle 14, which includes a second grip portion 141 configured for a user to hold. In this embodiment, at least a portion of the second grip portion 141 is located in front of the handle 13, and a connecting portion 30 is disposed between the handle 13 and the secondary handle 14. When using the cutting tool 100, the user holds the handle 13 with one hand and the second grip portion 141 with the other hand to use the cutting tool 100 stably. The second grip portion 141 surrounds a grip space 183, which is used to accommodate the user's palm. The second grip portion 141 is substantially cylindrical, and when the user holds the second grip portion 141, the palm is placed within the grip space 183 to surround the second grip portion 141. It should be noted that the second grip portion 141 surrounds the grip space 183, and the specific shape of the grip space 183 is not limited, as long as the grip space 183 can accommodate the user's palm. The grip space 183 has a dimension greater than or equal to 20 mm and less than or equal to 120 mm in the direction of the user's palm thickness. The direction of the user's palm thickness is substantially the circumferential direction of the second grip portion 141. In this way, the user can easily and comfortably grip the secondary handle 14.

[0056] The cutting tool 100 also includes a circuit board 196. The battery pack 90 is positioned above the motor 111, allowing the circuit board 196 to be positioned in the front-to-back direction between the motor 111 and the handle 13, thus fully utilizing the space between them. The main body 20 includes an air inlet 24 with multiple ventilation holes 241. In this embodiment, the circuit board 196 is located to the right of the ventilation holes 241, facilitating natural heat dissipation through the ventilation holes 241.

[0057] The following describes a technical solution of another embodiment. In this embodiment, components that are the same as or corresponding to those in Embodiment 1 are referred to by the same reference numerals as those in Embodiment 1. Figures 6 to 11 As shown, the cutting tool 100 in this embodiment has a basically the same driving device 11, base plate 12, main body 20, and handle 13 as in Embodiment 1. For simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The main difference between this embodiment and Embodiment 1 lies in the installation position and orientation of the battery pack 90.

[0058] like Figures 6 to 10As shown, the battery compartment 31 includes an opening 311 that opens in a direction away from the base plate 12, allowing the battery pack 90 to enter the battery compartment 31. The battery pack 90 is configured to be mounted to the joint 30 along a first straight line 101. A saw blade 10 defines a first plane 101a. The saw blade 10 has a straight-cutting state that is substantially perpendicular to the base plate 12. In the straight-cutting state, the first plane 101a forms an angle α with the first straight line 101, where the angle α is greater than or equal to 0 degrees and less than or equal to 85 degrees. In this embodiment, the angle α is greater than or equal to 15 degrees and less than or equal to 75 degrees. In other embodiments, the angle α is greater than or equal to 30 degrees and less than or equal to 60 degrees. It should be noted that mounting the battery pack 90 to the joint 30 along the first straight line 101 does not limit the specific position of the first straight line 101, nor does it limit whether the battery pack 90 is mounted to the joint 30 along the first straight line 101 from the upper right to the lower left or from the upper left to the lower right. The connecting portion 30 includes a mounting surface 32 that is raised relative to the base plate 12, and the mounting surface 32 extends obliquely relative to the first plane 101a. The mounting surface 32 is disposed on the side of the connecting portion 30 near the saw blade 10. The direction in which the battery pack 90 is installed to the connecting portion 30 forms an angle with the plane defined by the saw blade 10. In this way, the depth of the battery compartment 31 in the vertical direction is relatively shallow, and the volume of the connecting portion 30 in the horizontal direction occupies a large portion of the volume of the cutting tool 100 in the horizontal direction. This is beneficial for setting the center of gravity of the cutting tool 100 lower, and the overall stability of the machine is good when the user operates the cutting tool 100. In this embodiment, the connecting portion 30 is located between the handle 13 and the auxiliary handle 14 in the front-rear direction, and the battery pack 90 is installed to the connecting portion 30 from the upper left to the lower right along the first straight line 101. The opening portion 311 includes an opening surface 311a, which opens to the upper right and extends to the side of the connecting portion 30 away from the saw blade 10. When the user installs the battery pack 90 along the first straight line 101 to the joint 30, one end of the battery pack 90 enters the battery compartment 31 from the upper right to the lower left through the opening 311. This allows the user to easily and conveniently install the battery pack 90 at an angle to the joint 30, conforming to ergonomics. The opening 311 includes an opening surface 311a, allowing the battery pack 90 to be installed with its vertical direction protruding beyond the opening surface 311a. The battery compartment 31 is configured to have a larger left-right dimension than the battery packs 90 of different capacities in the left-right direction, while the battery packs 90 of different capacities have substantially the same front-back dimension. The structure of the mounting surface 32 is universal across battery packs 90 of different capacities. This allows the user to select and install battery packs 90 of different capacities to the joint 30 to apply the cutting tool 100 under different working conditions.

[0059] like Figure 9 and Figure 11As shown, the connecting portion 30 also includes a guide mechanism 33 extending on the mounting surface 32, the guide mechanism 33 being configured to engage with the battery pack 90. ​​The guide mechanism 33 guides the battery pack 90 toward and away from the connecting portion 30. In this embodiment, the guide mechanism 33 is a first rib 331 protruding from the connecting portion 30. The battery pack 90 has a second rib 332 formed therein, the second rib 332 being used to abut against the first rib 331. The battery pack 90 also includes a latch 91. The latch 91 includes a pressing portion 911 and a locking portion 912, the pressing portion 911 and the locking portion 912 being either connected by a drive or integrally formed. The connecting portion 30 also includes a locking groove 34. The locking portion 912 has a bevel 912a facing the locking groove 34. When the user moves the battery pack 90 into the battery compartment 31 along the guide mechanism 33, and the first rib 331 and the second rib 332 are almost completely aligned, the locking part 912 and the locking groove 34 are locked together by the inclined surface 912a, and the battery pack 90 is installed by the user into the joint 30 along the first straight line 101. When the user presses the pressing part 911, the locking part 912 is displaced as the pressing part 911 is pressed, the locking part 912 disengages from the locking groove 34, and the battery pack 90 is removed by the user from the joint 30 along the first straight line 101. Figure 10 As shown, the battery pack 90 includes an output terminal 92, and the mounting surface 32 includes an input terminal 321. When the output terminal 92 is connected to the input terminal 321, the battery pack 90 forms an electrical connection with the cutting tool 100. The cutting tool 100 also includes a switch 17 for controlling the start and stop of the cutting tool 100. The switch 17 has an on state and a closed state. When the battery pack 90 is installed at the connection part 30 and the switch 17 is in the on state, the battery pack 90 provides power to the motor 111, and the switch 17 controls the motor 111 to drive the saw blade 10 to rotate.

[0060] The following describes another embodiment of the technical solution. In this embodiment, components that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals. The cutting tool 100 in this embodiment has a drive device 11, a base plate 12, a main body 20, and a handle 13 with essentially the same structure as those in the above embodiments. For simplicity, only the differences between this embodiment and Embodiment 1 are described. Figures 12 to 13 As shown, the main difference between this embodiment and Embodiment 1 is that the mounting surface 32 is positioned below the battery pack 90.

[0061] In this embodiment, the connecting portion 30 includes an opening 311 for the battery pack 90 to enter the battery compartment 31. The opening 311 opens in the left-right direction away from the saw blade 10. The connecting portion 30 also includes a mounting surface 32 and a guide mechanism 33. The mounting surface 32 extends substantially parallel to the base plate 12 and is positioned below the battery pack 90. ​​A lower surface 122 defines a second plane 102a, and the projection of the battery pack 90 onto the mounting surface 32 at least partially overlaps with the projection onto the second plane 102a. The guide mechanism 33 extends on the mounting surface 32 and is configured to engage with the battery pack 90. ​​When the user installs the battery pack 90 into the connecting portion 30, the battery pack 90 enters the battery compartment 31 from the direction away from the saw blade 10 towards the direction closer to the saw blade 10 through the opening 311. The connecting portion 30 includes a window 35 that opens upwards. In this embodiment, the mounting surface 32 is positioned close to the base plate 12. The distance between the mounting surface 32 and the upper surface 121 is greater than or equal to 10 mm and less than or equal to 40 mm. The mounting surface 32 is located below the battery pack 90, which helps to lower the center of gravity of the cutting tool 100, increasing the overall stability of the cutting tool 100. The mounting surface 32 is substantially parallel to the base plate 12, facilitating the horizontal installation of the battery pack 90 to the connecting part 30 and increasing the installation stability of the battery pack 90. ​​The mounting surface 32's proximity to the base plate 12 allows the connecting part 30 to fully utilize the space above the base plate 12, resulting in a compact structure that is suitable for accommodating battery packs 90 of different sizes. The connecting part 30 includes an opening 311 and a window 35. The battery pack 90 can be installed with its lateral protrusions extending from the opening 311 and vertical protrusions extending from the window 35, allowing users to easily install battery packs 90 of different sizes to the connecting part 30.

[0062] The joint 30 includes a front wall 361, a rear wall 362, and a lower wall 364. The front wall 361 is disposed in the forward direction of the joint 30. The rear wall 362 is disposed in the rearward direction of the joint 30, and is located behind the front wall 361. The lower wall 364 is disposed in the downward direction of the joint 30, and at least a portion of the lower wall 364 is located between the front wall 361 and the rear wall 362 in the longitudinal direction. The front wall 361, rear wall 362, and lower wall 364 extend in the lateral direction away from the saw blade 10. The front wall 361, rear wall 362, and lower wall 364 together define an opening 311. When the cutting tool 100 is viewed from the right, the front wall 361, rear wall 362, and lower wall 364 together substantially form a U-shape. The lower wall 364 includes an upper wall surface 364a and a lower wall surface 364b, and a mounting surface 32 is formed on the upper wall surface 364a. The joint 30 also includes a left wall 365, which is disposed to the left in the direction of the joint 30. At least a portion of the left wall 365 is located between the front wall 361 and the rear wall 362 in the front-rear direction, and at least a portion of the left wall 365 is located above the lower wall 364 in the vertical direction. The front wall 361, the rear wall 362, and the left wall 365 extend substantially perpendicular to the second plane 102a, and the lower wall 364 extends substantially parallel to the second plane 102a. The front wall 361 is substantially parallel to the rear wall 362, and the lower wall 364 is substantially perpendicular to the front wall 361, the rear wall 362, and the left wall 365.

[0063] The joint 30 also includes a reinforcing mechanism 366 configured to increase the strength of the joint 30. In this embodiment, the reinforcing mechanism 366 includes a reinforcing rib 366a, which is disposed in the upper direction of the joint 30. In other embodiments, the reinforcing rib 366a may also be integrally formed with the secondary handle 14 and extend to the joint 30. The cutting tool 100 also includes a hook 18 configured to suspend the cutting tool 100 to a support structure. The support structure includes beams, hooks, ropes, belts, nails, rings, buckles, pockets, etc. In this embodiment, the hook 18 is mounted on the body 20 and located on the upper side of the body 20.

[0064] The following describes another embodiment of the technical solution. In this embodiment, components that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals. The cutting tool 100 in this embodiment has a drive device 11, a base plate 12, a main body 20, and a handle 13 with essentially the same structure as those in the above embodiments. For simplicity, only the differences between this embodiment and Embodiment 3 are described. Figures 14 to 15 As shown, the main difference between this embodiment and embodiment three is that the mounting surface 32 is positioned above the battery pack 90.

[0065] In this embodiment, the connecting portion 30 includes an opening 311 for the battery pack 90 to enter the battery compartment 31. The opening 311 opens in the left-right direction away from the saw blade 10. The connecting portion 30 also includes a mounting surface 32 and a guide mechanism 33. The mounting surface 32 extends substantially parallel to the base plate 12 and is positioned above the battery pack 90. ​​The connecting portion 30 includes a window 35 that opens downwards. The connecting portion 30 includes a front wall 361, a rear wall 362, and an upper wall 363. The front wall 361 is positioned in the forward direction of the connecting portion 30. The rear wall 362 is positioned in the rearward direction of the connecting portion 30, and is located behind the front wall 361. The upper wall 363 is positioned in the upward direction of the connecting portion 30, and at least a portion of the upper wall 363 is located between the front wall 361 and the rear wall 362 in the front-rear direction. The front wall 361, rear wall 362, and upper wall 363 extend in the left-right direction away from the saw blade 10. The front wall 361, rear wall 362, and upper wall 363 together define an opening 311. The upper wall 363 includes an upper wall surface 364a and a lower wall surface 364b, with a mounting surface 32 formed on the lower wall surface 364b. The joint 30 also includes a left wall 365, which is disposed to the left in the joint 30. At least a portion of the left wall 365 is located between the front wall 361 and the rear wall 362 in the front-back direction, and at least a portion of the left wall 365 is located below the upper wall 363 in the vertical direction. The front wall 361, rear wall 362, and left wall 365 extend substantially perpendicular to the second plane 102a, and the upper wall 363 extends substantially parallel to the second plane 102a. The front wall 361 is substantially parallel to the rear wall 362, and the upper wall 363 is substantially perpendicular to the front wall 361, the rear wall 362, and the left wall 365. The joint 30 also includes a reinforcing mechanism 366, configured to increase the strength of the joint 30. In this embodiment, the reinforcing mechanism 366 includes a reinforcing rib 366a, which is disposed in the downward direction of the joint 30.

[0066] The following describes another embodiment of the technical solution. In this embodiment, components that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals. The cutting tool 100 in this embodiment has a drive device 11, a base plate 12, a main body 20, and a handle 13 with essentially the same structure as those in the above embodiments. For simplicity, only the differences between this embodiment and Embodiment 3 are described. Figures 16 to 17 As shown, the main difference between this embodiment and embodiment three is that the mounting surface 32 is configured behind the battery pack 90.

[0067] In this embodiment, the connecting portion 30 includes an opening 311 for the battery pack 90 to enter the battery compartment 31. The opening 311 opens in the left-right direction away from the saw blade 10. The connecting portion 30 also includes a mounting surface 32 and a guide mechanism 33. The mounting surface 32 extends substantially perpendicular to the base plate 12 and is positioned behind the battery pack 90. ​​The connecting portion 30 includes a window 35 that opens in the forward direction. The connecting portion 30 includes an upper wall 363, a lower wall 364, and a rear wall 362.

[0068] The upper wall 363 is disposed in the upper direction of the joint 30. The lower wall 364 is disposed in the lower direction of the joint 30, below the upper wall 363. The rear wall 362 is disposed in the rear direction of the joint 30, at least a portion of the rear wall 362 being located between the upper wall 363 and the lower wall 364 in the vertical direction. The upper wall 363, the lower wall 364, and the rear wall 362 extend in the left-right direction away from the saw blade 10. The upper wall 363, the lower wall 364, and the rear wall 362 together define the opening 311. When the cutting tool 100 is viewed from the right, the upper wall 363, the lower wall 364, and the rear wall 362 together substantially form a C-shape. The rear wall 362 includes a rear wall surface 362b and a front wall surface 362a, with a mounting surface 32 formed on the front wall surface 362a. The joint 30 also includes a left wall 365, which is disposed in the left direction of the joint 30. At least a portion of the left wall 365 is located between the upper wall 363 and the lower wall 364 in the vertical direction, and at least a portion of the left wall 365 is located in front of the rear wall 362 in the front-back direction. The upper wall 363 and the lower wall 364 extend substantially parallel to the second plane 102a, and the rear wall 362 extends substantially perpendicular to the second plane 102a. The upper wall 363 is substantially parallel to the lower wall 364, and the rear wall 362 is substantially perpendicular to the upper wall 363, the lower wall 364, and the left wall 365. The joint 30 also includes a reinforcing mechanism 366, which is configured to increase the strength of the joint 30. In this embodiment, the reinforcing mechanism 366 includes a reinforcing rib 366a, which is disposed in the front direction of the joint 30.

[0069] The following describes another embodiment of the technical solution. In this embodiment, components that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals. The cutting tool 100 in this embodiment has a drive device 11, a base plate 12, a main body 20, and a handle 13 with essentially the same structure as those in the above embodiments. For simplicity, only the differences between this embodiment and Embodiment 3 are described. Figures 18 to 19 As shown, the main difference between this embodiment and embodiment three is that the mounting surface 32 is positioned in front of the battery pack 90.

[0070] In this embodiment, the connecting portion 30 includes an opening 311 for the battery pack 90 to enter the battery compartment 31. The opening 311 opens in the left-right direction away from the saw blade 10. The connecting portion 30 also includes a mounting surface 32 and a guide mechanism 33. The mounting surface 32 extends substantially perpendicular to the base plate 12 and is positioned in front of the battery pack 90. ​​The connecting portion 30 includes a window 35 that opens in the rearward direction. The connecting portion 30 includes an upper wall 363, a lower wall 364, and a front wall 361.

[0071] The upper wall 363 is disposed in the upper direction of the joint 30. The lower wall 364 is disposed in the lower direction of the joint 30, and is below the upper wall 363. The front wall 361 is disposed in the front direction of the joint 30, and at least a portion of the front wall 361 is located between the upper wall 363 and the lower wall 364 in the vertical direction. The upper wall 363, the lower wall 364, and the front wall 361 extend in the left-right direction away from the saw blade 10. The upper wall 363, the lower wall 364, and the front wall 361 together define the opening 311. The front wall 361 includes a front wall surface 362a and a rear wall surface 362b, and a mounting surface 32 is formed on the rear wall surface 362b. The joint 30 also includes a left wall 365, which is disposed in the left direction of the joint 30. At least a portion of the left wall 365 is located between the upper wall 363 and the lower wall 364 in the vertical direction, and at least a portion of the left wall 365 is located behind the front wall 361 in the front-back direction. The upper wall 363 and the lower wall 364 extend substantially parallel to the second plane 102a, and the front wall 361 extends substantially perpendicular to the second plane 102a. The upper wall 363 is substantially parallel to the lower wall 364, and the front wall 361 is substantially perpendicular to the upper wall 363, the lower wall 364, and the left wall 365.

[0072] The joint 30 also includes a reinforcing mechanism 366, which is configured to increase the strength of the joint 30. In this embodiment, the reinforcing mechanism 366 includes a reinforcing rib 366a, which is disposed in the rearward direction of the joint 30.

[0073] The following describes another embodiment of the technical solution. In this embodiment, components that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals. The cutting tool 100 in this embodiment has a drive device 11, a base plate 12, a main body 20, and a handle 13 with essentially the same structure as those in the above embodiments. For simplicity, only the differences between this embodiment and Embodiment 1 are described. Figures 20 to 21As shown, the main difference between this embodiment and Embodiment 1 is that the motor shaft 112 is inclined, and the battery pack 90 is located between the handle 13 and the auxiliary handle 14 in the front-to-back direction. The battery pack 90 includes a battery pack. The battery pack is inserted into the battery compartment 31 from top to bottom in direction a. The motor shaft 112 extends substantially along a straight line 112a, and has a first end 112b and a second end 112c in the length direction. The second end 112c is used to output power to the saw blade 10. The second end 112c is the output end of the output shaft 112 and is also the end closer to the saw blade 10. The distance between the first end 112b and the saw blade 10 is less than the sum of the distance between the second end 112c and the saw blade 10 and the length of the motor shaft 112. In some embodiments, in the left-right direction, the first end 112b is configured to be further away from the saw blade 10 than the second end 112c. In the up-down direction, the second end 112c is located below the first end 112b. In this way, the structure of the cutting tool 100 is more compact.

[0074] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A handheld cutting tool, comprising: The drive unit drives the saw blade to rotate; A base plate having an upper surface and a lower surface, the lower surface being configured to abut against the material to be cut; The main body houses at least a portion of the drive unit and is connected to the upper surface; A handle, at least partially positioned at the rear of the main body; The junction allows for the detachable installation of the battery pack; Its features are, At least a portion of the battery pack is located above the drive unit; The lower surface defines a second plane, and the projection of the battery pack and the drive device onto the second plane at least partially overlaps.

2. The cutting tool according to claim 1, characterized in that: The saw blade defines a first plane, and the battery pack is configured to be mounted to the joint along a second straight line; the second straight line is substantially parallel to the first plane, and the second straight line forms an angle with the second plane.

3. The cutting tool according to claim 2, characterized in that: The included angle is greater than or equal to 30 degrees and less than or equal to 75 degrees.

4. The cutting tool according to claim 3, characterized in that: The included angle is greater than or equal to 45 degrees and less than or equal to 60 degrees.

5. The cutting tool according to claim 2, characterized in that, The joint includes a mounting surface that stands upright relative to the base plate, the mounting surface extending substantially perpendicularly to the first plane.

6. The cutting tool according to claim 1, characterized in that: The cutting tool has a front end and a rear end, and the distance between the front end and the rear end is greater than or equal to 400 mm and less than or equal to 480 mm.

7. The cutting tool according to claim 6, characterized in that: The cutting tool has a highest point and a lowest point, the distance between the highest point and the lowest point being greater than or equal to 190 mm and less than or equal to 240 mm.

8. The cutting tool according to claim 7, characterized in that: The battery pack has a voltage greater than or equal to 18V and less than or equal to 60V.

9. The cutting tool according to claim 8, characterized in that: The weight of the cutting tool is greater than or equal to 3.8 kg and less than or equal to 4.8 kg.

10. The cutting tool according to claim 1, characterized in that: The cutting tool includes a secondary handle, which includes a second grip portion configured for a user to hold; the second grip portion surrounds a grip space for accommodating the user's palm, the grip space having a dimension greater than or equal to 20 mm and less than or equal to 120 mm in the thickness direction of the user's palm.

Images