Power tool

Abstract

The electric tool comprises a machine body, a power assembly, an output member, a clamping device and a battery pack. The machine body comprises a first machine body and a second machine body. The first machine body extends in the up-down direction, and the second machine body extends in the front-rear direction. The first machine body is located in front of the second machine body. The power assembly is arranged in the second machine body. The output member is connected to the first machine body and is driven by the power assembly to output power. The clamping device is connected to the output member and is used for clamping a working accessory. The battery pack is connected to the second machine body and supplies power to the power assembly. The first machine body comprises upper and lower finger guards on the rear side wall thereof. The upper finger guard is arranged above the second machine body. The lower finger guard is arranged below the second machine body. The outer diameter of the second machine body is greater than or equal to 35 mm and less than or equal to 65 mm. The front-rear distance difference between the upper and lower finger guards is △L, and -15 mm≤△L≤30 mm. When △L is less than 0, the upper finger guard is located behind the lower finger guard. When △L is greater than 0, the upper finger guard is located in front of the lower finger guard.

Description

Technical Field

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

[0002] Jigsaws are widely used in production and processing. They are mainly used for cutting metal and wood. Jigsaws are often equipped with working attachments. The saw blade is the working blade of the jigsaw. When working, the saw blade is installed on the output head and extends out of the base plate towards the workpiece. The base plate is then pressed against the surface of the workpiece, and the cutting is achieved through the reciprocating motion of the saw blade.

[0003] Existing jigsaws typically feature an arched, one-piece design with an opening in the middle for the user to grip. A horizontal grip is located at the top, and the bottom connects to the base plate. The user holds the jigsaw from the top. This bulky structure results in the grip being too far from the base plate and output components, hindering operation. Furthermore, the bulky design prevents the jigsaw from operating in confined spaces, such as close to a wall, at an angle between two walls, or where two walls meet. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an electric tool that is easy to hold and comfortable to operate.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A power tool, comprising:

[0007] The fuselage includes a first fuselage and a second fuselage, the first fuselage extending vertically, the second fuselage extending longitudinally, and the first fuselage located in front of the second fuselage;

[0008] The power unit is located within the second fuselage;

[0009] The output component is connected to the first fuselage and is driven by the power assembly to output power.

[0010] A clamping device, connected to the output component, is used to clamp working accessories;

[0011] A battery pack, connected to the second fuselage and supplying power to the power assembly;

[0012] A base plate assembly, connected to the housing, the base plate assembly including a base plate that contacts the workpiece;

[0013] The first fuselage includes an upper finger stop and a lower finger stop on its rear side wall, the upper finger stop being positioned above the second fuselage; therefore, the lower finger stop is positioned below the second fuselage.

[0014] The outer diameter of the second body is greater than or equal to 35mm and less than or equal to 65mm; the front-to-back distance difference between the upper finger stop and the lower finger stop is △L, then -15mm≤△L≤30mm, △L less than 0 means the upper finger stop is located behind the lower finger stop, △L greater than 0 means the upper finger stop is located in front of the lower finger stop.

[0015] Furthermore, the upper finger stop is located in front of the lower finger stop, and 3mm < △L ≤ 15mm.

[0016] Furthermore, the front-to-back distance difference between the upper finger stop and the lower finger stop is ΔL, and -10mm≤ΔL≤3mm.

[0017] Furthermore, the base plate includes a pair of first sides extending in a front-rear direction and a pair of second sides extending in a left-right direction, wherein the first sides are perpendicular to the second sides.

[0018] The projection of the second fuselage onto the base plate includes a left extreme outer edge and a right extreme outer edge, wherein both the left extreme outer edge and the right extreme outer edge are located between a pair of first sides; wherein the left extreme outer edge is spaced apart from the first side adjacent to it, and the right extreme outer edge is spaced apart from the other first side adjacent to it.

[0019] Furthermore, the left-right distance between the outer edge of the left limit and the first side adjacent to it is greater than or equal to 5mm and less than or equal to 15mm;

[0020] The distance between the right outer edge and the adjacent first edge is greater than or equal to 5mm and less than or equal to 15mm.

[0021] Furthermore, the power assembly includes a motor disposed within the second fuselage;

[0022] The power tool also includes a switch assembly, which includes a push button, a lever, and a switch. The lever is disposed in the second body through the rear bearing seat of the motor in a front-to-back direction. The lever is connected to the switch. The push button is operated to drive the lever to trigger or turn off the switch. The switch is connected to a control mechanism.

[0023] Furthermore, the rear bearing housing includes a through opening extending from front to back;

[0024] The lever includes a connecting part, a narrow neck, and a trigger part. The narrow neck passes through the opening and is slidably connected thereto. The trigger part is used to trigger the switch. The connecting part connects the narrow neck and the push button.

[0025] Furthermore, the switch includes a toggle switch, and the triggering part includes a connecting hole, which is sleeved on the toggle switch;

[0026] The connecting part is also provided with a guide to guide the push rod to slide into contact with the inner wall of the second body.

[0027] Furthermore, the power assembly is supported within the fuselage by a bearing bracket, the bearing bracket including a support portion and a reinforcing portion, wherein the support portion is located within the fuselage, the reinforcing portion extends out of the fuselage and is connected to the base plate assembly, and the reinforcing portion includes a balancing reinforcing portion extending away from the first fuselage.

[0028] Furthermore, the base plate includes a connecting portion, the reinforcing portion is connected to the connecting portion, and the reinforcing portion further includes an auxiliary reinforcing portion, the auxiliary reinforcing portion including spokes disposed on both sides of the balancing reinforcing portion.

[0029] The power tool of the present invention, by reasonably setting the front-to-back distance difference between the upper and lower finger stops, makes the user's grip more comfortable and improves the user experience; and the lower side of the second body, i.e. the lower finger stop, has a large grip space between the extended foot, allowing the user to grip with three or even four fingers, thereby improving the user's grip comfort and also improving the user's control over the machine. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the jigsaw structure of the present invention;

[0031] Figure 2 yes Figure 1 The diagram shows the structure of the jigsaw after the working attachments have been removed.

[0032] Figure 3 yes Figure 1 A schematic diagram of the structure of the jigsaw after opening the left housing;

[0033] Figure 4 yes Figure 1 A schematic diagram of the structure of the jigsaw after opening the right casing;

[0034] Figure 5 This is a schematic diagram of the connection between the bearing bracket and the base plate assembly of the present invention;

[0035] Figure 6 This is a schematic diagram of the jigsaw of the present invention standing upright;

[0036] Figure 7 This is a schematic diagram of the finger stop of the jigsaw of the present invention;

[0037] Figure 8 yes Figure 1 The top view of the jigsaw shown;

[0038] Figure 9-10 This is a front view of the lighting unit of the present invention;

[0039] Figure 11 This is a schematic diagram of the assembly of the motor rear bearing housing and the switch assembly of the present invention;

[0040] Figure 12 yes Figure 11 The diagram shows the structure of the switch assembly.

[0041] Figure 13 This is a schematic diagram showing the relationship between the speed control knob and the first body of the present invention;

[0042] Figure 14 This is a schematic diagram showing the distribution of the speed control knobs of the present invention.

[0043] Figure label:

[0044] 100 - Jigsaw; 101 - First axis; 102 - First fuselage axis; 103 - Second fuselage axis;

[0045] 110 - Fuselage; 111 - First fuselage; 1111 - First elastic part; 112 - Second fuselage; 1121 - Second elastic part; 1122 - Right limit outer edge; 1123 - Left limit outer edge;

[0046] 120 - Output component;

[0047] 130 - Clamping device;

[0048] 140 - Power assembly; 141 - Motor; 142 - Eccentric gear assembly; 143 - Front bearing of motor; 144 - Rear bearing of motor; 145 - Rear bearing housing; 1451 - Opening;

[0049] 150 - Bearing bracket; 151 - Support part; 152 - Balance reinforcement part; 153 - Auxiliary reinforcement part; 154 - Connecting column; 155 - Connecting rib; 156 - Connecting boss;

[0050] 160 - Upper finger stop;

[0051] 170 - Lower finger stop;

[0052] 200 - Battery pack; 210 - First support unit;

[0053] 300-Base plate assembly;

[0054] 310 - Base plate; 311 - First side; 312 - Second side;

[0055] 320 - Rotary connecting part; 321 - Connecting hole;

[0056] 331 - Square nut; 332 - Clamping plate; 333 - Screw;

[0057] 340 - Second support unit;

[0058] 400 - Attachments to the work;

[0059] 500-Switch Assembly;

[0060] 510 - Push button; 520 - Pull rod; 521 - Neck; 522 - Connecting part; 523 - Trigger part; 5231 - Connecting hole;

[0061] 530 - Switch; 531 - Toggle switch;

[0062] 600 - Speed ​​control component; 610 - Speed ​​control knob; 611 - Rotation axis; 612 - Knob center;

[0063] 700 - Support plane;

[0064] 800 - Lighting Unit;

[0065] 900 - Installation area; 910 - First installation area; 920 - Second installation area. Detailed Implementation

[0066] The present invention will now be described in detail with reference to the accompanying drawings.

[0067] like Figure 1-2 The image shows a power tool according to the present invention. Specifically, the power tool in this embodiment is a jigsaw 100. This jigsaw is used for cutting metal, wood, etc., and can cut workpieces of different materials depending on the specific attachments installed. The power tool in this embodiment is specifically a jigsaw.

[0068] like Figure 2 As shown, the jigsaw 100 includes a body 110, a power assembly 140, an output component 120, a clamping device 130, a battery pack 200, and a base plate assembly 300, the base plate assembly 300 including a base plate 310 that contacts the workpiece.

[0069] See Appendix for details. Figure 2The fuselage 110 includes a first fuselage 111 and a second fuselage 112 connected to each other, with the first fuselage 111 and the second fuselage 112 arranged at an angle to each other. The first fuselage 111 has a first fuselage axis 102, and the second fuselage 112 has a second fuselage axis 103. The first fuselage axis 102 is perpendicular to the base plate 310, and the second fuselage axis 103 is parallel to the base plate 310.

[0070] In this embodiment, the first body 111 extends in a direction that is generally perpendicular to the bottom plate assembly 300, and the second body 112 extends in a direction that is generally parallel to the front-back direction of the bottom plate assembly 300. In this invention, the vertical direction refers to the direction parallel to the first axis 102, with the side away from the bottom plate assembly 300 being the upper side and the side closer to the bottom plate assembly 300 being the lower side. The front-back direction refers to the direction parallel to the second body axis 103, with the side closer to the working attachment being the front side and the side closer to the battery pack being the rear side.

[0071] like Figure 5 As shown, the base plate assembly 300 is disposed outside the machine body 110 and connected to the first machine body 111. The base plate assembly 300 includes a base plate 310 and a rotating connection part 320. The base plate 310 contacts the workpiece, and the rotating connection part 320 is rotatably connected to the first machine body 111. The rotating connection part 320 and the first machine body 111 are configured to be rotatably connected about a first axis 101, wherein the first axis 101 is parallel to the plane where the base plate 310 is located, thereby enabling the jigsaw 100 to perform oblique cutting.

[0072] See appendix Figure 5 The base plate 130 has a base plate plane for contacting the workpiece. The rotating connection part 320 is used to connect the base plate 130 with the machine body 110. The rotating connection part 320 has a protrusion from the base plate 130 toward the machine body 110. The rotating connection part 320 is generally arched and extends substantially in a direction parallel to the first axis 101. The rotating connection part 320 is connected to the machine body 110 through a connecting assembly.

[0073] See Figures 3-4 The power assembly 140 includes a motor 141 and a transmission assembly. The motor 141 is connected to the output component 120 via the transmission assembly. In this embodiment, the transmission assembly includes an eccentric gear assembly 142. The output component 120 of the present invention is a reciprocating rod that extends along an axis parallel to the first body 111. The reciprocating rod is driven to reciprocate by the motor 141.

[0074] Specifically, such as Figure 4 As shown, the motor 141 is installed in the second body 112. The motor gear at the output end of the motor meshes with the eccentric gear. The rotation of the motor 141 drives the eccentric gear to rotate, thereby driving the reversing rod to move up and down reciprocatingly.

[0075] The clamping device 130 is connected to the reciprocating rod and is used to clamp the working attachment 400. In this embodiment, the working attachment 400 is a saw blade. The saw blade is disposed outside the machine body 110, and one side of the saw blade has serrations. The reciprocating motion of the saw blade cuts the workpiece. The clamping device 130 is located at the end of the reciprocating rod, and a portion of the working attachment 400 is inserted into and fixed to the clamping device 130. Specifically, a cavity is formed inside the clamping device 130. When the working attachment 400 is installed in the clamping device 130, a portion of the working attachment 400 is accommodated and fixed inside the cavity.

[0076] like Figure 4 As shown, the motor 141 is supported in the second housing 112 via a front bearing 143 and a rear bearing 144. A rear bearing housing is provided on the inner wall of the second housing 112, and the rear bearing 144 is supported in the rear bearing housing 145. A bearing bracket 150 is also provided. (See attached diagram.) Figure 5 The bearing bracket 150 is an L-shaped bracket, including a support portion 151 and a reinforcing portion 152. The support portion 151 is disposed inside the first fuselage 111 and extends along the axis of the first fuselage 111, while the reinforcing portion 152 is located outside the fuselage and connected to the base plate assembly 300.

[0077] For details, please see the appendix. Figure 4 The support part 151 is provided with a motor bearing unit and an eccentric gear support unit. The motor bearing unit is provided with a front motor bearing 143, and the eccentric gear support unit is provided with an eccentric gear bearing. The support part 151 mainly serves as a support. The reinforcing part extends in a direction parallel to the base plate 310, and the reinforcing part includes a balancing reinforcing part 152 extending in a direction away from the first fuselage 111.

[0078] By providing a balancing reinforcement 152 extending parallel to the base plate 310, the connection strength between the bearing bracket 150 and the base assembly 300 can be improved, and the overall strength of the machine body can also be improved. On the other hand, by extending the balancing reinforcement 152 in a direction away from the first body 111, the balance of the whole machine can be improved, avoiding the imbalance of the machine body caused by the heavier weight of the first body 111. This avoids the need for the user to apply a large force to the second body 112 to balance the whole machine during use, thus improving the user's operating experience.

[0079] like Figure 5As shown, the balancing reinforcement part 152 extends out of the first body 111 of the machine, and after extending out of the machine, the balancing reinforcement part 152 is connected to the rotating connection part 320 of the base plate assembly 300. Since the rotating connection part 320 has a protruding outer circumferential surface, the bottom of the balancing reinforcement part 152 is provided with a recessed inner circumferential surface that cooperates with the outer circumferential surface. The outer circumferential surface and the inner circumferential surface are coaxially arranged. The rotating connection part 320 is connected to the balancing reinforcement part 152 through a connecting assembly.

[0080] Specifically, see Appendix Figure 5 The rotating connection part 320 includes an inner region near the base plate 310 and an outer region away from the base plate 310. The top center of the rotating connection part 320 is provided with a connection hole 321. The connection assembly includes a square nut 331, a clamping plate 332 and a screw 333. The clamping plate 332 is disposed in the inner region corresponding to the connection hole 321, and the square nut 331 is disposed in the outer region corresponding to the connection hole 321. The screw 333 passes through the clamping plate 332 and the connection hole 321 in sequence and is fixedly connected to the square nut 331.

[0081] Furthermore, the connecting hole 321 is an arc-shaped connecting hole extending in the circumferential direction on the outer peripheral surface of the rotating connecting part 320. The fixed position of the bearing bracket 150 and the rotating connecting part 320 can be adjusted by the connecting assembly, thereby allowing the rotating connecting part 320 of the base plate assembly 300 and the first machine body 111 to be configured as a rotating connection with the first axis 101 as the axis, thereby enabling the jigsaw 100 to perform oblique cutting.

[0082] Of course, the reinforcement also includes an auxiliary reinforcement 153, wherein the auxiliary reinforcement 153 includes spokes disposed on both sides of the balance reinforcement, and the auxiliary reinforcement 153 is used to improve the support strength of the bearing frame 150 and the whole machine.

[0083] The bearing frame in this embodiment of the invention further includes a reinforcing component, which is reinforced and fixed in conjunction with the inner shell of the fuselage. The reinforcing component includes a connecting rib 155 and a connecting post 154. The connecting rib 155 is disposed on the surface of the support portion 151 that mates with the inner shell of the fuselage, and the connecting post 154 is disposed on the reinforcing portion, specifically on the outer side of the spoke of the auxiliary reinforcing portion 153. The connecting rib 155 can mate with a groove in the inner wall of the first fuselage to enhance the connection stability between the support portion of the bearing frame and the fuselage; similarly, the connecting post 154 can mate with a hole in the inner wall of the first fuselage to enhance the connection stability between the reinforcing portion of the bearing frame and the fuselage.

[0084] Of course, to further improve the connection strength between the bearing bracket and the fuselage, the reinforcement assembly also includes a connecting boss 156 provided on the support portion, with screw connection holes inside the connecting boss 156. Correspondingly, screw holes are also provided on the inner wall of the fuselage, and screws can be used to fix the connecting boss 156 to the fuselage, thereby further improving the connection strength between the bearing bracket and the fuselage, making the connection more reliable and stable.

[0085] In this embodiment, the bearing housing 150 is an integral structure, which can be an aluminum bearing housing, or other metal bearing housings, and is not limited here.

[0086] The battery pack 200 is connected to the rear end of the second body 112 and supplies power to the power unit. Specifically, the battery pack 200 is connected to the extended foot of the second body 112. A control component is also provided at the extended foot of the second body 112. The control component mainly includes a control circuit board.

[0087] See Appendix for details. Figure 6 The battery pack 200 includes a first support unit 210, and the base plate assembly 300 includes a second support unit 340, wherein the first support unit 210 and the second support unit 340 are located in the same support plane 700; the first support unit 210 and the second support unit 340 jointly support the jigsaw 100 to make it stand up, so that when the tool is standing up, the working attachment 400 faces the support plane 700.

[0088] By setting a first support unit and a second support unit on the tool, the tool can stand upright on the workbench during the intervals of use, avoiding the leakage of working accessories when the tool is laid horizontally on the workbench because it cannot stand upright, or the safety hazards caused by the tool sliding or falling.

[0089] The first support unit 210 is configured as a line support unit or a surface support unit, and the second support unit 340 can also be configured as a line support unit or a surface support unit. In this embodiment, a portion of the outer shell on the battery pack 200 is configured as the first support unit 210, wherein the contact portion between the outer shell of the battery pack 200 and the workbench surface can be a surface contact or a line contact, for example, the entire bottom surface of the battery pack 200 can be used as the first support unit 210, wherein the bottom surface refers to the side of the battery pack opposite to the plug-in end; in this embodiment, the rear side of the base plate 310 away from the output component is configured as the second support unit 340, wherein the rear side refers to the side located behind the base plate 310.

[0090] By using the rear side plate of the base plate 310 and part of the outer shell of the battery pack 200 to support the tool, the tool can stand upright during breaks in use, avoiding the safety hazard of placing the tool horizontally on the workbench. On the other hand, while ensuring the tool stands upright, the working attachments face the support plane 700, which also avoids the need to repeatedly disassemble and assemble the working attachments during breaks in use to ensure safety.

[0091] In this embodiment, the first support unit 210 and the second support unit 340 are spaced apart, and when the tool is standing, the projection of the tool's center of gravity onto the support plane 700 is located between the first support unit 210 and the second support unit 340. This arrangement makes the tool more stable and prevents it from tipping over due to instability. When the tool is standing, the angle between the surface of the base plate 310 and the support plane 700 is α, where 35°≤α≤60°, and more preferably 45°≤α≤50°.

[0092] The aforementioned angle setting, while ensuring the tool stands upright, further ensures that the working attachments on the tool are as close as possible to the work surface when standing, thereby further improving the safety of the tool when standing and preventing the working attachments from accidentally injuring the operator.

[0093] The jigsaw 100 in this embodiment includes two grips: a first grip on a first body 111 and a second grip on a second body 112. When a user operates the jigsaw 100, they can grip either the first grip or the second grip, or they can grip both the first and second grips with both hands respectively. In this embodiment, the front end of the first body 111 forms the first grip, allowing the user to hold the saw with their hand on the front end and their thumb around the top rear side of the first body 111. The outer peripheral wall of the second body 112 forms the second grip.

[0094] Among them, such as Figure 2 As shown, the first grip portion also includes a first elastic portion 1111, and similarly, the second grip portion also includes a second elastic portion 1121, wherein the second elastic portion 1121 almost completely covers the outer peripheral wall of the second fuselage 112.

[0095] The first elastic portion 1111 covers at least the front wall of the first fuselage 111, wherein the area of ​​the first elastic portion 1111 covering the outer shell of the first fuselage 111 is greater than or equal to 50%, and more than 50% of the outer shell of the first fuselage 111 is covered by the first elastic portion.

[0096] In this embodiment, the first elastic portion 1111 covers the front wall of the first body 111 and extends from the front wall to the side wall and top wall, covering part of the side wall and top wall. By providing the first elastic portion 1111, the user's handling experience can be improved, and operational fatigue caused by vibration during the cutting process can be reduced.

[0097] See appendix Figure 7 The first fuselage 111 of the present invention includes an upper finger stop 160 and a lower finger stop 170 located on its rear sidewall. The upper finger stop 160 is positioned above the second fuselage 112, and the lower finger stop 170 is positioned below the second fuselage 112. The difference in front-to-back distance ΔL between the upper finger stop 160 and the lower finger stop 170 is -15mm ≤ ΔL ≤ 30mm. ΔL less than 0 indicates that the lower finger stop 170 is located behind the upper finger stop 160, and ΔL greater than 0 indicates that the upper finger stop 160 is located in front of the lower finger stop 170. Furthermore, if the outer diameter of the second fuselage 112 is D, then 35mm ≤ D ≤ 65mm. This embodiment includes two grip positions. The first grip position is that the upper finger stop 160 is located in front of the lower finger stop 170. In this case, the front-to-back distance difference ΔL between the upper finger stop 160 and the lower finger stop 170 is 3mm < ΔL ≤ 15mm.

[0098] In order to make the overall structure of the machine compact, the existing technology usually does not allow three fingers to wrap around the grip. Usually, the user's thumb and index finger wrap around the grip, while the other fingers are close to the side wall of the machine. Therefore, when gripping the machine, you can only rely on the clamping force between your thumb and index finger. This kind of grip is strenuous and unreliable, and users are very likely to feel uncomfortable after a long period of operation.

[0099] By setting the front-to-back distance between the upper finger stop 160 and the lower finger stop 170 within the aforementioned range, the present invention enables users to grip the device with at least three fingers, that is, at least three fingers are allowed to wrap around the lower part of the second body. At this time, the fingers below the second body 112 are close to the lower finger stop 170, and the user's thumb and forefinger are close to the upper finger stop 160. This grip method is reliable and comfortable, making it easy for users to pick up and put down the machine.

[0100] Of course, as an alternative implementation, the front-to-back distance difference ΔL between the lower finger stop 170 and the upper finger stop 160 can also be set to -10mm≤ΔL≤3mm.

[0101] By setting the front-to-back distance between the upper finger stop 160 and the lower finger stop 170 within the aforementioned range, it is possible for the user to grip with at least four fingers, that is, to allow at least four fingers to wrap around and hold the lower part of the second body. This grip method also helps to improve the user's grip comfort and grip reliability.

[0102] In this embodiment of the invention, by setting the second body 112 within the aforementioned size range, it is advantageous for users to hold the device with one hand and increases the proportion of the user's hand grip area to the outer periphery of the second body, thereby improving the reliability of the grip. At the same time, the relative positions of the front and rear finger guards make the user's grip more comfortable, which is conducive to improving the user's experience. It also allows users to grip with three or even four fingers, thereby improving the user's grip comfort and the user's control over the machine.

[0103] like Figure 5 As shown, in this embodiment, the base plate 310 includes a pair of first sides 311 extending in the front-to-back direction and a pair of second sides 312 extending in the left-to-right direction, wherein the first sides are perpendicular to the second sides 312, and the first sides 311 intersect the second sides 312 at a shorter distance. (See attached diagram.) Figure 8 The projection of the second fuselage 112 onto the base plate 130 includes a left extreme outer edge 1123 and a right extreme outer edge 1122, wherein both the left extreme outer edge 1123 and the right extreme outer edge 1122 are located between a pair of first edges 311; wherein the left extreme outer edge 1123 is spaced apart from the first edge 311 adjacent to it, and the right extreme outer edge 1122 is spaced apart from the other first edge 311' adjacent to it.

[0104] The distance H1 between the left outer edge 1123 and the adjacent first side 311 in the left-right direction is greater than or equal to 5 mm and less than or equal to 15 mm; similarly, the distance H2 between the right outer edge and the other adjacent first side in the left-right direction is greater than or equal to 5 mm and less than or equal to 15 mm.

[0105] In this embodiment, the left outer limit refers to the leftmost edge of the outer shell of the second fuselage 112, that is, the outline or point closest to the first side 311 on the left; the right outer limit refers to the rightmost edge of the outer shell of the second fuselage 112, that is, the outline or point closest to the first side 311 on the right.

[0106] See appendix Figure 8 In the figure, the upper edge is the right limit outer edge 1122 and the lower edge is the left limit outer edge 1123. By setting the left and right limit outer edges of the second body inside a pair of first edges of the base plate, there is a gap between the second body 112 and the first edge of the base plate during vertical use. This is beneficial for the tool to operate in confined spaces. For example, when the first edge 311 of the base plate is close to the wall or the outer wall of an object, there is a gap between the outer wall of the second body 112 and the wall or the outer wall of the object, thus providing space for the user's hand to hold it.

[0107] See appendix Figures 8-10The jigsaw 100 in this embodiment of the invention further includes an illumination unit 800 disposed at the output end; the illumination unit 800 is connected to the control mechanism via wires. The illumination unit 800 is arranged to surround or partially surround the output component 120. In this embodiment, the illumination unit 800 is a circular illumination unit, eccentrically positioned with respect to the output component. However, it can also be an open ring or a horseshoe-shaped illumination unit; no limitation is made here.

[0108] See Appendix for details. Figure 10 The distance a between the central axis of the circular lighting unit 800 and the central axis of the output unit 120 is greater than 0 and less than or equal to 5 mm.

[0109] Specifically, see Appendix Figure 8 and Figure 10 In this embodiment of the invention, the clamping device 130 is generally cylindrical, and the outer diameter of the lighting unit 800 is larger than the outer diameter of the clamping device 130. The ratio of the outer diameter d1 of the lighting unit 800 to the outer diameter d2 of the clamping device 130 is greater than 1 and less than 3, that is, 1 < d1 / d2 < 3.

[0110] The eccentric arrangement of the lighting unit 800 and the clamping device 130 allows the lighting unit 800 to more clearly illuminate the cutting position of the working attachment, thus avoiding blind spots in the lighting unit 800 and resulting in clearer illumination. Simultaneously, limiting the outer diameters of the lighting unit 800 and the clamping device 130 to the aforementioned ranges prevents the lighting unit 800 from being too small, resulting in an insufficient illumination range, or too large, resulting in insufficient light intensity. Therefore, the above arrangement ensures that the lighting unit 800 can illuminate and cover a certain area around the working attachment while also ensuring clear illumination of the working attachment.

[0111] The jigsaw 100 of the present invention also includes a switch assembly, wherein the switch assembly 500 in this embodiment includes a push button 510, a pull rod 520 and a switch 530, wherein the switch 530 is disposed in the second body 112, the push button 510 is connected to the pull rod 520 and the push button 510 is disposed outside the second body 112, the pull rod 520 is disposed inside the second body 112 and extends along the axial direction of the second body 112, and the pull rod 520 can be moved along the axial direction of the second body 112 by moving the push button 510.

[0112] like Figure 11-Figure 12 As shown, the push button 510 is provided on the lever 520. The lever 520 includes a trigger part 523, a narrow neck 521 and a connecting part 522, wherein the trigger part 523 is used to trigger the switch 530, and the connecting part 522 connects the narrow neck 521 and the push button 510.

[0113] Specifically, such as Figure 11 As shown, a through opening 1451 is provided in the rear bearing seat 145 inside the second body 112. The narrow neck 521 passes through the opening 1451 and slides within it. A connecting hole 5231 is provided on the trigger part 523, which connects to the trigger unit of the switch 530. Specifically, the trigger unit of the switch 530 is a toggle switch 531. The connecting hole 5231 is fitted onto the toggle switch 531. Pushing the key 510 drives the pull rod 520 to reciprocate, thereby opening or closing the toggle switch 531. The switch 530 is electrically connected to the control component via a wire, and the switch 530 can control the start and stop of the motor 141 through the control component.

[0114] The connecting part 522 is also provided with a guide member that guides the push rod 520 to slide on the inner wall of the second body 112. Specifically, the guide member includes a sliding groove on the connecting part 522 and a guide rib on the inner wall of the second body 112. Of course, guide ribs can also be provided on the connecting part 522, and guide grooves can be carved into the inner wall of the second body 112. There is no limitation on this.

[0115] Normally, based on gripping habits, users' fingers tend to be near the front of the device when holding it. Therefore, placing the push button at the front is more convenient for users to operate. In this embodiment, a switch lever with a narrow neck is provided, which passes through the motor rear bearing housing 145. Based on this, the push button 510 is positioned at the front of the second device, while also satisfying the electrical connection between the lever 520 and the switch 530 located at the rear of the second device. In addition, there is no need to reserve extra space in the second device for arranging the lever, thus reducing the size of the second device, especially the external radial dimension of the second device.

[0116] See appendix Figure 13 The jigsaw 100 of the present invention also includes a speed control assembly 600, which includes a speed control knob 610, a speed control circuit board, and speed control wires. The speed control assembly 600 is electrically connected to the battery pack 200 via wires, and the speed control circuit board is connected to the circuit board of the control mechanism via wires to realize speed control of the motor 141. The speed control knob 610 is disposed on the top of the first body 111, and the speed control knob 610 has a rotation axis 611 around which it can rotate. The rotation axis 611 is perpendicular to the base plate 310, or parallel to the base plate 310. The speed control knob 610 is disposed on the top of the first body 111 so that the user can conveniently perform speed adjustment operation while holding it.

[0117] Among them, such as Figure 13As shown, in this embodiment of the invention, the rotation axis 611 of the speed control knob 610 is set perpendicular to the base plate, and the distance L between the rotation axis 611 and the first body axis 102 is greater than or equal to 10mm and less than or equal to 25mm.

[0118] Specifically, see Appendix Figure 14 The speed control knob 610 is located in the mounting area 900 on the rear side of the first body 111. Specifically, the center 612 of the speed control knob 610 is located in the mounting area 900. The mounting area 900 includes a first mounting area 910 and a second mounting area 920. The first mounting area 910 refers to the area swept by the second body axis 103 when rotated approximately 90° clockwise around the first body axis 102, and the second mounting area 920 refers to the area swept by the second body axis 103 when rotated approximately 90° counterclockwise around the first body axis 102. By setting the speed control knob 610 in this manner, it is more convenient for users to adjust the speed and improves the user experience.

[0119] 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 body including a first body extending in a vertical direction and a second body extending in a front-rear direction, the first body being located in front of the second body; the first body including a portion protruding from the second body in the vertical direction; a power assembly disposed in the second body; an output member connected to the first body and driven by the power assembly to output power; a chucking device connected to the output member for chucking an accessory; a battery pack connected to the second body and supplying power to the power assembly; a base plate assembly connected to the body, the base plate assembly including a base plate contacting a workpiece; characterized in that: the first body includes an upper finger guard and a lower finger guard located on a rear side wall thereof, the upper finger guard being disposed above the second body; the lower finger guard being disposed below the second body; wherein an outer diameter of the second body is greater than or equal to 35 mm and less than or equal to 65 mm; a front-rear distance difference between the upper finger guard and the lower finger guard is AL, and -15 mm≤ AL≤ 30 mm, AL being less than 0 indicating that the upper finger guard is located behind the lower finger guard, and AL being greater than 0 indicating that the upper finger guard is located in front of the lower finger guard; the power assembly is supported in the body by a bearing bracket, the bearing bracket being an L-shaped bracket including a reinforcing portion located partially outside the first body.

2. The power tool of claim 1, wherein, the upper finger guard is located in front of the lower finger guard, and 3 mm < AL≤ 15 mm.

3. The power tool of claim 1, wherein, a front-rear distance difference between the upper finger guard and the lower finger guard is AL, and -10 mm≤ AL≤ 3 mm.

4. The power tool according to claim 2 or 3, characterized in that, the base plate includes a pair of first edges extending in the front-rear direction and a pair of second edges extending in a left-right direction, wherein the first edges are perpendicular to the second edges; a projection of the second body onto the base plate includes a left limit outer edge and a right limit outer edge, wherein the left limit outer edge and the right limit outer edge are both located between the pair of first edges; and wherein the left limit outer edge is spaced apart from an adjacent first edge, and the right limit outer edge is spaced apart from another adjacent first edge.

5. The power tool of claim 4, wherein, a left-right distance between the left limit outer edge and the adjacent first edge is greater than or equal to 5 mm and less than or equal to 15 mm; a left-right distance between the right limit outer edge and the another adjacent first edge is greater than or equal to 5 mm and less than or equal to 15 mm.

6. The power tool according to claim 1, characterized in that: the power assembly includes a motor disposed in the second body; the power tool further includes a switch assembly including a push key, a pull rod, and a switch, the pull rod being disposed in the second body through a rear bearing seat of the motor in the front-rear direction, the pull rod being connected to the switch, the push key being operated to drive the pull rod to trigger or turn off the switch, and the switch being connected to a control mechanism.

7. The power tool according to claim 6, characterized in that: the rear bearing seat includes an opening extending in the front-rear direction. The pull rod comprises a connecting portion, a thin neck portion and a trigger portion, the thin neck portion passes through the opening and is in sliding connection with the opening, the trigger portion is used for triggering the switch, and the connecting portion connects the thin neck portion and the push key.

8. The power tool of claim 7, wherein, The switch comprises a knob, and the trigger portion comprises a connecting hole which is sleeved on the knob. The connecting portion is further provided with a guide member for guiding the sliding connection between the pull rod and the inner wall of the second fuselage.

9. The power tool of claim 6, wherein, The bearing frame comprises a supporting portion and the reinforcing portion, the supporting portion is located in the fuselage, the reinforcing portion is connected with the bottom plate assembly after extending out of the fuselage, and the reinforcing portion comprises a balance reinforcing portion extending away from the first fuselage.

10. The power tool of claim 9, wherein, The bottom plate comprises a connecting portion, the reinforcing portion is connected with the connecting portion, the reinforcing portion further comprises an auxiliary reinforcing portion, and the auxiliary reinforcing portion comprises a web plate arranged on both sides of the balance reinforcing portion.

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