Hand-held electric saw

Abstract

This utility model discloses a handheld electric saw, comprising: a base plate, a mounting frame, and a saw body. The mounting frame has a protective cover, and a dust exhaust pipe is mounted on the protective cover. A power housing is located at the bottom of the saw body, with an L-shaped air inlet at its outer end. An L-shaped vent cover is embedded in the air inlet via a step, and an L-shaped advertising strip is mounted on the L-shaped vent cover. A battery pack is mounted on the outer rear surface of the power housing. The inner straight end of the dust exhaust pipe is inserted into a sleeve at the top of the protective cover. A locking platform and a limiting edge are provided on the outer wall of the inner straight pipe. An annular boss is provided on the inner wall of the sleeve, preventing the dust exhaust pipe from detaching from the sleeve by blocking the locking platform. Several slots are provided on the annular boss. When the dust exhaust pipe is driven to rotate, the locking platform aligns with the slots, allowing the locking platform to engage with the slots after the dust exhaust pipe is driven to move outward. The dust exhaust pipe of the handheld electric saw can be positioned circumferentially, resulting in a more compact structure.

Description

Technical Field

[0001] This utility model relates to the field of household power tools, specifically to a handheld electric saw. Background Technology

[0002] Existing handheld electric saws include: a base plate for pressing down on the workpiece during cutting, a mounting frame, and a saw body with a saw blade mounted on it. The mounting frame is mounted on the base plate, and the rear end of the saw body is hinged to the mounting frame. A spring is installed between the saw body and the mounting frame. After the saw body is driven to swing downwards against the spring force, the saw blade can pass down through the base plate to cut. A protective cover is installed on the mounting frame to surround the saw blade. A dust exhaust pipe with an adjustable dust exhaust angle is installed on the top of the protective cover. The dust exhaust pipe is connected to the inner cavity of the protective cover, and the flying chips generated during cutting can be sucked in through the dust exhaust pipe. A power housing with a left-right orientation is installed on the bottom of the saw body. The power housing contains a power component for driving the saw blade to rotate and cut. The saw blade is installed on the outer side of the inner end of the power housing. Existing handheld electric saws have the following disadvantages: the dust exhaust pipe is not positioned circumferentially, making it easy for the dust exhaust pipe to rotate on its own after the angle is adjusted; the battery pack is usually installed on the upper surface of the power housing, making the power housing too bulky. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a handheld electric saw with a more compact structure and a dust discharge pipe that can be positioned in the circumferential direction.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: a handheld electric saw, comprising: a base plate for pressing down on the workpiece during cutting, a mounting frame, and an electric saw body with a saw blade mounted thereon. The mounting frame is mounted on the base plate, and the rear end of the electric saw body is hinged to the mounting frame. A spring is provided between the electric saw body and the mounting frame. After the electric saw body is driven to swing downward against the spring force, the saw blade can pass downward through the base plate to cut. A protective cover is provided on the mounting frame to surround the outside of the saw blade, and a protective cover is installed on the top of the tail of the protective cover. The electric saw features a rotatable, adjustable dust extraction pipe connected to the inner cavity of the protective cover. Dust generated during cutting is sucked in through the dust extraction pipe. A left-right oriented power housing is located at the bottom of the main body of the electric saw. The power housing houses a power assembly for driving the saw blade to rotate and cut. The saw blade is mounted on the outer side of the inner end of the power housing. The power housing is rectangular in shape, with an L-shaped air inlet extending forward from the outer end to the front surface. A step is provided on the inner wall of the air inlet. The L-shaped vent cover is embedded in the air inlet via a step. An L-shaped advertising strip can be detachably installed on the outer surface of the L-shaped vent cover. A snap-fit ​​groove and conductive feet are provided on the outer rear surface of the power housing. The battery pack is installed on the outer rear surface of the power housing by snapping into the snap-fit ​​groove, and provides power to the power components by inserting into the conductive feet. The inner straight pipe of the dust outlet pipe is inserted into the sleeve at the top of the protective cover. A locking platform and a limiting edge are provided on the outer wall of the inner straight pipe, and a ring is provided on the inner wall of the sleeve. The annular boss on the outer side of the inner straight pipe has a locking platform located inside the sleeve and a limiting edge located outside the sleeve. The annular boss can prevent the dust outlet pipe from separating from the sleeve by blocking the locking platform, and the limiting edge can limit the depth of the dust outlet pipe inserted into the sleeve by abutting against the sleeve. Several circumferentially spaced slots are provided on the annular boss for the locking platform to engage. After the dust outlet pipe is driven to rotate, the locking platform and the slots are aligned. At this time, after the dust outlet pipe is driven to move outward, the locking platform can engage in the slots, so that the dust outlet pipe can be limited and cannot rotate.

[0005] Furthermore, in the aforementioned handheld electric saw, a sealing ring is also provided on the outer wall of the inner straight pipe of the dust outlet pipe to seal the gap between it and the sleeve.

[0006] Furthermore, in the aforementioned handheld electric saw, a saw blade observation window for observing the saw blade's cutting depth is provided on the outer side of the bottom front of the protective cover, and a liftable transparent protective plate is installed on the saw blade observation window.

[0007] Furthermore, in the aforementioned handheld electric saw, the outer surface of the transparent protective plate is provided with a force-bearing protrusion for driving the transparent protective plate to rise and fall.

[0008] Furthermore, in the aforementioned handheld electric saw: a limiting plate is provided on the top of the transparent protective plate, and a limiting slot is provided on the limiting plate that can cooperate with the ramp boss on the protective cover. The ramp boss is located in the limiting slot to limit the vertical position of the transparent protective plate. A positioning plate is provided on one side of the transparent protective plate, and a positioning groove is provided on the positioning plate. A spring is installed on the protective cover. When the transparent protective plate moves up and down, it can be positioned up and down by engaging different positioning grooves through the spring.

[0009] Furthermore, in the aforementioned handheld electric saw: the front end of the L-shaped vent cover is locked to the power housing by a screw screwed in from the inside out, so that the screw can be covered by the power housing and cannot be seen; the rear end of the L-shaped vent cover is locked to the power housing by a screw screwed in from the rear surface of the power housing, and the screw can be covered by the battery pack and cannot be seen after the battery pack is installed on the power housing.

[0010] The advantages of this utility model are as follows: After the dust discharge pipe on the handheld electric saw is adjusted, it can be driven to move outward through the dust discharge pipe, causing the clamping plate to be locked into the slot and thus unable to rotate; in addition, an L-shaped air inlet is provided on the outer end of the power housing, extending forward from the outer end to the front surface. A step is provided on the inner wall of the air inlet, and the L-shaped vent cover is embedded in the air inlet through the step. An L-shaped advertising strip can be detachably installed on the outer surface of the L-shaped vent cover. A snap-fit ​​groove and conductive feet are provided on the outer side of the rear surface of the power housing. The battery pack is installed on the outer side of the rear surface of the power housing by snapping into the snap-fit ​​groove. Through the above-mentioned configuration, the structure of the electric saw body can be more compact and reasonable, thereby reducing the weight of the electric saw; and the detachable installation of the L-shaped advertising strip on the outer surface of the L-shaped vent cover makes the subsequent sale of the electric saw more convenient. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the handheld electric saw described in this utility model from one perspective.

[0012] Figure 2 This is a three-dimensional structural diagram of the handheld electric saw described in this utility model from another perspective.

[0013] Figure 3 This is a schematic diagram of the handheld electric saw of this utility model after it has been simply disassembled.

[0014] Figure 4 This is a structural diagram of a transparent protective panel. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a handheld electric saw includes: a base plate 1 for pressing down on the workpiece during cutting, a mounting frame 2, and an electric saw body 3 with a saw blade mounted on it. The mounting frame 2 is mounted on the base plate 1, and the rear end of the electric saw body 3 is hinged to the mounting frame 2. A spring is provided between the electric saw body 3 and the mounting frame 2. After the electric saw body 3 is driven to swing downward against the spring force, the saw blade can pass downward through the base plate 1 to cut. A protective cover 4 is provided on the mounting frame 2 to cover the outside of the saw blade. A dust exhaust pipe 5 with an adjustable dust exhaust angle is installed on the top of the protective cover 4. The dust exhaust pipe 5 is connected to the inner part of the protective cover 4. The cavities are interconnected, and the flying debris generated during cutting can be sucked in through the dust outlet pipe 5. A power housing 6 running left and right is provided on the bottom of the electric saw body 3. The power housing 6 is equipped with a power component for driving the saw blade to rotate and cut. The saw blade is installed on the outer side of the inner end of the power housing 6. The power housing 6 is rectangular prism-shaped. An air inlet 7 with an L-shaped opening is provided on the outer end of the power housing 6, extending forward from the outer end to the front surface. A step is provided on the inner wall of the air inlet 7. An L-shaped vent cover 8 is embedded in the air inlet 7 through the step. An L-shaped vent cover 8 can be detachably installed on the outer surface of the L-shaped vent cover 8. Advertising strip 9, a snap-fit ​​groove 10 and a conductive foot 11 are provided on the outer side of the rear surface of the power housing 6. The battery pack 12 is installed on the outer side of the rear surface of the power housing 6 by snapping into the snap-fit ​​groove 10. The battery pack 12 provides power to the power assembly by inserting into the conductive foot 11. The inner straight pipe 13 of the dust outlet pipe 5 is inserted into the sleeve 14 at the top of the tail of the protective cover 4. A locking platform 15 and a limiting edge 16 are provided on the outer wall of the inner straight pipe 13. An annular boss 17 surrounding the outer side of the inner straight pipe 13 is provided on the inner wall of the sleeve 14. The locking platform 15 is located on the sleeve 14. In section 4, the limiting edge 16 is located outside the sleeve 14. The annular boss 17 can prevent the dust outlet pipe 5 from separating from the sleeve 14 by blocking the locking platform 15. The limiting edge 16 can limit the depth of the dust outlet pipe 5 inserted into the sleeve 14 by abutting against the sleeve 14. Several circumferentially spaced slots 18 are provided on the annular boss 17 for the locking platform 15 to be engaged. After the dust outlet pipe 5 is driven to rotate, the locking platform 15 and the slot 18 are aligned inside and outside. At this time, after the dust outlet pipe 5 is driven to move outward, the locking platform 15 can be engaged in the slot 18, so that the dust outlet pipe 5 can be limited and cannot rotate.

[0017] In this embodiment, a sealing ring 19 is also provided on the outer wall of the inner end straight pipe 13 of the dust outlet pipe 5 to seal the gap between it and the sleeve 14.

[0018] A saw blade observation window 20 is provided on the outer side of the bottom front of the protective cover 4 for observing the saw blade's cutting depth. A liftable transparent protective plate 21 is installed on the saw blade observation window 20. The working status of the saw blade can be better observed through the transparent protective plate 21.

[0019] The outer surface of the transparent protective plate 21 is provided with a force protrusion 22 for driving the transparent protective plate 21 to rise and fall.

[0020] A limiting piece 23 is provided on the top of the transparent protective plate 21. A limiting groove 24 is provided on the limiting piece 23, which can cooperate with the ramp boss on the protective cover 4. The ramp boss is located in the limiting groove 24 to limit the vertical position of the transparent protective plate 21. A positioning plate 25 is provided on one side of the transparent protective plate 21. A positioning groove 26 is provided on the positioning plate 25. A spring piece 27 is installed on the protective cover 4. When the transparent protective plate 21 moves up and down, it can be positioned up and down by engaging different positioning grooves 26 through the spring piece 27.

[0021] The front end of the L-shaped vent cover 8 is locked to the power housing 6 by a screw screwed in from the inside out, so that the screw is concealed by the power housing 6 and cannot be seen. The rear end of the L-shaped vent cover 8 is locked to the power housing 6 by a screw screwed in from the rear surface of the power housing 6, and this screw is concealed by the battery pack 12 after it is installed on the power housing 6 and cannot be seen. This design improves the overall integrity of the electric saw.

Claims

1. Handheld electric saw, including: The electric saw body comprises a base plate for pressing down on the workpiece during cutting, a mounting frame, and a saw blade mounted on the main body. The mounting frame is mounted on the base plate, and the rear end of the electric saw body is hinged to the mounting frame. A spring is installed between the electric saw body and the mounting frame. After the electric saw body swings downward against the spring force, the saw blade can pass downward through the base plate for sawing. A protective cover is installed on the mounting frame to surround the outside of the saw blade. A dust exhaust pipe with an adjustable dust exhaust angle is installed on the top of the protective cover. The dust exhaust pipe is connected to the inner cavity of the protective cover, and the flying chips generated during cutting can be sucked in through the dust exhaust pipe. A power housing with a left-right orientation is installed on the bottom of the electric saw body. The power housing contains a power component for driving the saw blade to rotate and cut. The saw blade is installed on the outer side of the inner end of the power housing. The power housing is rectangular prism-shaped. An L-shaped air inlet is provided on the outer end of the power housing, extending forward from the outer end to the front surface. A step is provided on the inner wall of the air inlet, and an L-shaped vent cover is embedded in the air inlet through the step. An L-shaped advertising strip can be detachably installed on the outer surface of the L-shaped vent cover. A snap-fit ​​groove and conductive feet are provided on the outer rear surface of the power housing. The battery pack is installed on the outer rear surface of the power housing by snapping into the snap-fit ​​groove, and provides power to the power components by inserting into the conductive feet. The inner straight tube of the dust outlet pipe is inserted into the sleeve at the top of the protective cover. A locking platform and limiting edge are provided on the outer wall of the inner straight tube, and an annular ring surrounding the outer side of the inner straight tube is provided on the inner wall of the sleeve. The boss and locking platform are located inside the sleeve, while the limiting edge is located outside the sleeve. The annular boss can prevent the dust outlet pipe from detaching from the sleeve by blocking the locking platform, and the limiting edge can limit the depth of the dust outlet pipe inserted into the sleeve by abutting against the sleeve. Several circumferentially spaced slots are provided on the annular boss for the locking platform to engage. After the dust outlet pipe is driven to rotate, the locking platform and the slots are aligned. At this time, after the dust outlet pipe is driven to move outward, the locking platform can engage in the slots, so that the dust outlet pipe can be limited and cannot rotate.

2. The handheld electric saw according to claim 1, characterized in that: A sealing ring is also provided on the outer wall of the inner straight pipe of the dust outlet pipe to seal the gap between it and the sleeve.

3. The handheld electric saw according to claim 1 or 2, characterized in that: A saw blade observation window is provided on the outer side of the bottom front of the protective cover for observing the saw blade's cutting depth. A transparent protective plate that can be raised and lowered is installed on the saw blade observation window.

4. The handheld electric saw according to claim 3, characterized in that: The outer surface of the transparent protective panel is provided with force protrusions for driving the transparent protective panel to rise and fall.

5. The handheld electric saw according to claim 3, characterized in that: The top of the transparent protective plate is equipped with a limiting plate, and the limiting plate has a limiting groove that can cooperate with the sloping boss on the protective cover. The sloping boss is located in the limiting groove to limit the vertical position of the transparent protective plate. A positioning plate is provided on one side of the transparent protective plate, and a positioning groove is provided on the positioning plate. A spring is installed on the protective cover. When the transparent protective plate moves up and down, it can be positioned up and down by engaging different positioning grooves through the spring.

6. The handheld electric saw according to claim 1 or 2, characterized in that: The front end of the L-shaped vent cover is locked to the power housing by a screw that screws in from the inside out, so that the screw is covered by the power housing and cannot be seen. The rear end of the L-shaped vent cover is locked to the power housing by a screw that screws in from the rear surface of the power housing, and this screw is covered by the battery pack and cannot be seen after the battery pack is installed on the power housing.

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