Handheld electric saw

Abstract

The handheld electric saw comprises a bottom plate, a mounting frame and an electric saw body, a protective cover is arranged on the mounting frame, a dust outlet pipe is mounted on the protective cover, a power shell is arranged at the bottom of the electric saw body, an air inlet with an L-shaped opening is formed in the outer end of the power shell, an L-shaped ventilation cover is embedded in the air inlet through a step, and an L-shaped advertisement strip is mounted on the L-shaped ventilation cover. The battery pack is installed on the outer side of the rear surface of the power shell. An inner end straight pipe of the dust outlet pipe is inserted into a sleeve at the tail top of the protective cover, a clamping table and a limiting edge are arranged on the outer side wall of the inner end straight pipe, an annular boss is arranged on the inner side wall of the sleeve, the annular boss can block the clamping table so that the dust outlet pipe cannot be separated from the sleeve, a plurality of clamping grooves are formed in the annular boss, and the dust outlet pipe can be clamped in the clamping grooves. After the dust outlet pipe is driven to rotate, the clamping table and the clamping groove can be opposite internally and externally, and at the moment, after the dust outlet pipe is driven to move outwards, the clamping table can be clamped into the clamping groove. The dust outlet pipe of the handheld electric saw can be positioned in the circumferential direction, and the structure is more compact.

Description

Technical Field

[0001] The present invention relates to the field of household electric tools, in particular to a handheld electric saw. Background Art

[0002] An existing handheld electric saw comprises a base plate for pressing against the material being sawed during cutting, a mounting frame, and a saw body with a saw blade mounted thereon. The mounting frame is mounted on the base plate, and the rear end of the saw body is hingedly connected to the mounting frame. A spring is disposed between the saw body and the mounting frame. When the saw body is driven to swing downward against the spring force, the saw blade can penetrate the base plate and cut downward. A protective shield is mounted on the mounting frame, enclosing the outer side of the saw blade. A dust pipe is mounted on the rear end of the protective shield, which is rotatably adjustable in dust discharge angle. The dust pipe communicates with the inner cavity of the protective shield, allowing dust chips generated during cutting to be sucked through the dust pipe. A power housing is disposed on the bottom of the saw body, extending left and right. The power housing houses a power assembly for driving the saw blade to rotate and cut, and the saw blade is mounted on the outside of the inner end of the power housing. Existing handheld electric saws have the following disadvantages: the dust pipe is not circumferentially positioned, making it prone to spontaneous rotation after the angle is adjusted. The battery pack is typically mounted on the upper surface of the power housing, making the power housing excessively bulky. Summary of the Invention

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

[0004] The invention relates to a hand-held electric saw, comprising: a bottom plate for pressing the sawed object during cutting, a mounting frame, and a saw body with a saw blade mounted thereon, the mounting frame being mounted on the bottom plate, the rear end of the saw body being hinged to the mounting frame, a spring being arranged between the saw body and the mounting frame, driving the saw body to swing downward against the elastic force of the spring, so that the saw blade can pass downward through the bottom plate for sawing, a cover is arranged on the mounting frame to surround the outer side of the saw blade, a dust outlet pipe which can be rotatably adjusted to a dust outlet angle is arranged on the tail top of the protective cover, the dust outlet pipe is connected to the inner cavity of the protective cover, and flying chips generated during cutting can be sucked through the dust outlet pipe, a power housing running left and right is arranged on the bottom of the saw body, a power assembly for driving the saw blade to rotate and saw is installed in the power housing, and the saw blade is mounted on the outer side of the inner end of the power housing, characterized in that the power housing is in the shape of a rectangular column, an air inlet with an L-shaped opening extending forward from the outer end face to the front surface is arranged on the outer end of the power housing, a step is arranged on the inner wall of the air inlet, and the L The L-shaped air permeable cover is embedded in the air inlet through a step, and an L-shaped advertising strip is detachably installed on the outer surface of the L-shaped air permeable cover. A clamping groove and a conductive foot are provided on the outer side of the rear surface of the power housing. The battery pack is mounted on the outer side of the rear surface of the power housing by clamping with the clamping groove. The battery pack provides power to the power component by plugging with the conductive foot; the inner end straight tube of the dust outlet pipe is inserted into the sleeve at the top of the tail of the protective cover, and a clamping platform and a limiting edge are provided on the outer side wall of the inner end straight tube, and a clamping groove surrounding the inner side wall of the sleeve is provided on the inner side wall of the sleeve. The annular boss is on the outside of the inner end straight tube, the card table is located in the sleeve, and the limiting edge is located outside the sleeve. The annular boss can prevent the dust outlet pipe from being separated from the sleeve by blocking the card table, and the limiting edge can limit the depth of the dust outlet pipe inserted into the sleeve by abutting against the sleeve. A plurality of circumferentially spaced card slots for the card table to be inserted into are provided on the annular boss. When the dust outlet pipe is driven to rotate, the card table can be relative to the inside and outside of the card slot. At this time, after the dust outlet pipe is driven outward, the card table can be inserted into the card slot, so that the dust outlet pipe can be limited and cannot rotate.

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

[0006] Furthermore, in the aforementioned handheld electric saw, a saw blade observation window for observing the sawing depth of the saw blade is provided on the outer side of the front bottom 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, a force-carrying boss for driving the transparent protective plate to rise and fall is provided on the outer surface of the transparent protective plate.

[0008] Furthermore, the aforementioned handheld electric saw, wherein: 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 sloped boss on the protective cover, the sloped boss is located in the limiting slot to limit the upper and lower positions of the transparent protective plate, a positioning plate is provided on one side of the transparent protective plate, a positioning slot is provided on the positioning plate, and a spring piece is installed on the protective cover, and when the transparent protective plate moves up and down, it can be clamped into different positioning slots by the spring piece for up and down positioning.

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

[0010] The advantages of the present invention are as follows: the dust outlet pipe on the handheld electric saw can be driven to move outward through the dust outlet pipe after the dust outlet angle is adjusted, so that the card table is stuck in the card slot and is limited and cannot rotate; in addition, an air inlet with an L-shaped opening is provided on the outer end of the power shell, extending forward from the outer end face to the front surface, and a step is provided on the inner wall of the air inlet. The L-shaped air permeable cover is embedded in the air inlet through the step, and an L-shaped advertising strip is detachably installed on the outer surface of the L-shaped air permeable cover, and a card slot and a conductive foot are provided on the outer side of the rear surface of the power shell. The battery pack is installed on the outer side of the rear surface of the power shell by being snapped with the card slot. The above-mentioned arrangement makes the structure of the electric saw main body more compact and reasonable, thereby reducing the weight of the electric saw; and by detachably installing the L-shaped advertising strip on the outer surface of the L-shaped air permeable cover, the subsequent sales of the electric saw can be more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The figure is a schematic three-dimensional structural diagram of the handheld electric saw according to the present invention from one perspective.

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the handheld electric saw according to the present invention from another perspective.

[0013] Figure 3 The figure is a schematic diagram of the structure of the handheld electric saw of the present invention after being simply disassembled.

[0014] Figure 4 Schematic diagram of the structure of the transparent protective plate. DETAILED DESCRIPTION

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

[0016] like Figure 1、 Figure 2 、 Figure 3 、 Figure 4 As shown, the handheld electric saw comprises: a base plate 1 for pressing the object to be sawed during cutting, a mounting frame 2, and an electric saw body 3 with a saw blade installed. The mounting frame 2 is installed 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 elastic force of the spring, the saw blade can pass downward through the base plate 1 for sawing. A protective cover 4 is provided on the mounting frame 2 to enclose the outer side of the saw blade. A dust outlet pipe 5 that can be rotatably adjusted to adjust the dust outlet angle is installed on the tail top of the protective cover 4. The dust outlet pipe 5 is connected to the inner surface of the protective cover 4. The cavities are connected, and the flying chips generated during cutting can be sucked through the dust outlet pipe 5. A left-right power housing 6 is provided on the bottom of the electric saw body 3. A power component for driving the saw blade to rotate and saw is installed in the power housing 6. The saw blade is installed on the outside of the inner end of the power housing 6. The power housing 6 is in the shape of a rectangular column. An L-shaped opening is provided on the outer end of the power housing 6, extending forward from the outer end face to the air inlet 7 on the front surface. A step is provided on the inner wall of the air inlet 7. An L-shaped air permeable cover 8 is embedded in the air inlet 7 through the step. An L-shaped air permeable cover 8 can be detachably installed on the outer surface of the L-shaped air permeable cover 8. The advertising strip 9 is provided with a snap-in groove 10 and a conductive foot 11 on the outer side of the rear surface of the power housing 6. The battery pack 12 is mounted on the outer side of the rear surface of the power housing 6 by snapping in with the snap-in groove 10. The battery pack 12 provides power to the power assembly by plugging in with the conductive foot 11. The inner end straight tube 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 clamping platform 15 and a limiting edge 16 are provided on the outer side wall of the inner end straight tube 13. An annular boss 17 surrounding the outer side of the inner end straight tube 13 is provided on the inner side wall of the sleeve 14. The clamping platform 15 is located at the sleeve 1 4, the limiting edge 16 is located outside the sleeve 14, and the annular boss 17 can prevent the dust outlet pipe 5 from being separated from the sleeve 14 by blocking the clamping 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. A plurality of circumferentially spaced clamping grooves 18 for the clamping platform 15 to be clamped are provided on the annular boss 17. When the dust outlet pipe 5 is driven to rotate, the clamping platform 15 and the clamping groove 18 can be opposite to each other inside and outside. At this time, after the dust outlet pipe 5 is driven to move outward, the clamping platform 15 can be clamped into the clamping groove 18, so that the dust outlet pipe 5 can be limited and cannot rotate.

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

[0018] A saw blade observation window 20 for observing the saw blade cutting depth is provided on the outer side of the front bottom of the protective cover 4, and a liftable transparent protective plate 21 is installed on the saw blade observation window 20. Through the transparent protective plate 21, the working state of the saw blade can be better observed.

[0019] A force boss 22 for driving the transparent protective plate 21 to move up and down is provided on the outer surface of the transparent protective plate 21 .

[0020] A limiting piece 23 is provided on the top of the transparent protective plate 21, and a limiting slot 24 is provided on the limiting piece 23, which can cooperate with the sloped boss on the protective cover 4. The sloped boss is located in the limiting slot 24 to limit the upper and lower positions of the transparent protective plate 21. A positioning plate 25 is provided on one side of the transparent protective plate 21, and a positioning slot 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 clamped into different positioning slots 26 by the spring piece 27 for up and down positioning.

[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 hidden 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. After the battery pack 12 is installed on the power housing 6, the screw is hidden by the battery pack 12 and cannot be seen. This arrangement can improve the integrity of the electric saw.

Claims

1. A handheld electric saw comprising: The bottom plate, mounting frame and electric saw body with saw blade installed are used to press the sawed object during cutting, the mounting frame is installed on the bottom plate, the rear end of the electric saw body is hinged with the mounting frame, a spring is provided between the electric saw body and the mounting frame, after driving the electric saw body to overcome the elastic force of the spring and swing downward, the saw blade can pass through the bottom plate downward for sawing, and a cover is provided on the mounting frame to surround the protective cover on the outside of the saw blade, and a dust outlet pipe that can be rotatably adjusted to the dust outlet angle is installed on the tail top of the protective cover, and the dust outlet pipe is connected to the inner cavity of the protective cover, and the flying chips generated during cutting can be sucked through the dust outlet pipe. A power housing running left and right is provided on the bottom of the electric saw body, and a power component for driving the saw blade to rotate and saw is installed in the power housing, and the saw blade is installed on the outside of the inner end of the power housing. It is characterized in that: the power housing is a rectangular column, and an L-shaped opening is provided on the outer end of the power housing, which extends from the outer end face to the front surface of the air inlet, and a step is provided on the inner wall of the air inlet. The L-shaped air permeable cover is embedded in the air inlet through the step. An L-shaped advertising strip is detachably mounted on the outer surface of the L-shaped breathable cover, and a snap-in slot and a conductive foot are provided on the outer side of the rear surface of the power housing. The battery pack is mounted on the outer side of the rear surface of the power housing by snapping in with the snap-in slot, and the battery pack provides power to the power assembly by plugging in with the conductive foot; the inner straight tube of the dust outlet pipe is inserted into the sleeve at the top of the tail of the protective cover, and a clamping platform and a limiting edge are provided on the outer side wall of the inner straight tube, and a ring-shaped ring surrounding the outer side of the inner straight tube is provided on the inner side wall of the sleeve. The boss and the card table are located in the sleeve, and the limiting edge is located outside the sleeve. The annular boss can prevent the dust outlet pipe from being separated from the sleeve by blocking the card table, and the limiting edge can limit the depth of the dust outlet pipe inserted into the sleeve by abutting against the sleeve. A plurality of circumferentially spaced card slots for the card table to be inserted into are provided on the annular boss. When the dust outlet pipe is driven to rotate, the card table can be relative to the inside and outside of the card slot. At this time, after the dust outlet pipe is driven outward, the card table can be inserted into the card slot, 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 side wall of the straight tube at the inner end of the dust outlet pipe to seal the gap between the straight tube and the sleeve.

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

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

5. The handheld electric saw according to claim 3, characterized in that: 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 sloped boss on the protective cover. The sloped boss is located in the limiting slot to limit the upper and lower positions of the transparent protective plate. A positioning plate is provided on one side of the transparent protective plate, and a positioning slot is provided on the positioning plate. A spring piece is installed on the protective cover. When the transparent protective plate moves up and down, it can be clamped into different positioning slots by the spring piece for up and down positioning.

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

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