JP7158908B2 - Dust collection system for power tools - Google Patents

Description

TECHNICAL FIELD The present invention relates to a dust collection system for power tools, which is used to collect dust generated when a power tool such as a hammer drill is used.

When a work material such as concrete or stone is processed using an electric power tool such as a hammer drill, a power tool dust collector as disclosed in Patent Document 1 is used to prevent dust generated from the work material from scattering. is used. Here, a dust collection motor, a fan, and a filter are provided in the main body attached to the hammer drill, and the nozzle (suction part) protruding forward from the main body penetrates the bit, and the suction force generated by the rotation of the fan discloses a structure in which dust is sucked through a nozzle and collected inside the main body.

JP 2015-150665 A

In the conventional power tool dust collector described above, the airflow generated by the rotation of the fan is only discharged out of the main body after passing through the filter.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a dust collection system for a power tool that can effectively utilize exhaust air after collecting dust.

In order to achieve the above object, the invention according to claim 1 provides a power tool to which a bit is attached,
A power tool is equipped with a suction unit, a dust collection motor, a dust collection fan that rotates when driven by the dust collection motor to generate suction force in the suction unit, and a dust collector that stores dust sucked from the suction unit. a dust collector comprising a dust part;
an exhaust flow path formed in each of the power tool and the dust collector for guiding exhaust gas passing through the dust collector to a predetermined high-temperature part of the power tool ;
The power tool is a hammer drill whose housing is divided into a vibration-isolating side and a non-vibration-isolating side through a vibration-isolating part. It is characterized by being formed in a space between the housing .
The invention according to claim 2 is characterized in that, in the construction of claim 1, the respective exhaust passages communicate with each other by mounting a dust collector on the hammer drill .
The invention according to claim 3 is the structure according to claim 1 or 2, wherein the exhaust passage on the hammer drill side is also used as a passage for cooling air generated by rotation of a fan provided in the hammer drill . characterized by
According to a fourth aspect of the invention, in any one of the first to third aspects, the hammer drill is provided with an output section including a striking mechanism, and the high temperature section is the output section.
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the hammer drill includes a motor accommodating portion that accommodates the motor with the output shaft facing upward, and the dust collector includes the motor accommodating portion. It is characterized by being mounted in front of the
The invention according to claim 6 is characterized in that, in the configuration of claim 5, the dust collector is mounted below the motor accommodating portion.
According to a seventh aspect of the invention, in any one of the first to sixth aspects, the dust collector is attached to the housing on the vibration-proof side.

According to the first aspect of the invention, the power tool and the dust collector are each provided with an exhaust flow path for guiding the exhaust gas that has passed through the dust collecting section to the high-temperature part of the power tool. can be effectively used to cool high-temperature parts, leading to longer life of power tools.
In the hammer drill, the housing is divided into a vibration-isolating side and a non-vibration-isolating side through the vibration-isolating part, and the exhaust passage on the hammer drill side is placed between the vibration-isolating side housing and the non-vibration-isolating side housing. , the exhaust passage can be easily obtained by using the divided housing.
According to the invention of claim 2, in addition to the effect of claim 1, the exhaust passages communicate with each other by attaching the dust collector to the hammer drill , so that the connection between the exhaust passages is reliable. can be done
According to the invention of claim 3, in addition to the effect of claim 1 or 2, the exhaust passage on the hammer drill side is also used as a passage for cooling air generated by the rotation of the fan provided in the hammer drill . Therefore, the cooling air from the motor can also be used to cool the high-temperature part.
According to the invention of claim 4, in addition to the effect of any one of claims 1 to 3, since the high temperature part to be cooled is the output part of the hammer drill, the output part that tends to become high temperature can be effectively cooled. can do.
According to the invention of claim 5, in addition to the effect of any one of claims 1 to 4, the dust collector is mounted in front of the motor accommodating portion that accommodates the motor with the output shaft facing upward. Therefore, the dust collector can be mounted using the space in front of the motor accommodating portion.
According to the sixth aspect of the invention, in addition to the effect of the fifth aspect, since the dust collector is mounted below the motor accommodating portion, the forward protruding portion is suppressed to make the motor compact in the front-rear direction. .
According to the seventh aspect of the invention, in addition to the effect of any one of the first to sixth aspects , the dust collector is attached to the housing on the vibration-isolating side, so that a higher vibration-isolating effect can be obtained.

1 is a central longitudinal section view of a dust collection system for a power tool and a hammer drill; FIG. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; It is a center longitudinal cross-sectional view which shows the effect|action of the vibration-proof part in a hammer drill.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a central longitudinal sectional view showing an example in which a dust collector 40 and a dust collecting bit 70 are attached to a hammer drill 1 to form a dust collecting system S for power tools.
First, the hammer drill 1 includes an inner housing 2 that accommodates an output portion 3, a motor housing 4 that is coupled to the lower side of the inner housing 2 and accommodates a motor 5 with an output shaft 6 facing upward, and an outer side of the inner housing 2. It has an outer housing 7 for covering and a handle housing 8 provided from the rear of the outer housing 7 to below the motor housing 4 .
The handle housing 8 includes a handle portion 9 having a switch 10 and a switch lever 11 and extending in the vertical direction behind the outer housing 7, and two battery packs, front and rear, which extend below the motor housing 4 and serve as power sources. A battery mounting part 12 for mounting 13, 13 is provided. A controller 14 having a control circuit board is accommodated in the front-rear direction above the battery pack 13 in the battery mounting portion 12 .

The outer housing 7 here is provided so as to be able to move back and forth relative to the inner housing 2 and the motor housing 4, and the upper end of the handle portion 9 of the handle housing 8 is coupled to the upper rear surface of the outer housing 7 to provide a battery. The mounting portion 12 is engaged with the lower portion of the motor housing 4 so as to be relatively movable forward and backward.
Between the inner housing 2 and the outer housing 7 and between the motor housing 4 and the handle housing 8 are provided anti-vibration portions 15A and 15B. The anti-vibration portion 15A straddles the front and rear bosses 16, 16 provided in the outer housing 7 between the rear surface of the inner housing 2 and the rear inner surface of the outer housing 7 so as to face each other. It is formed from a coil spring 17A that is sheathed as follows. The anti-vibration portion 15B is formed in the battery mounting portion 12 of the handle housing 8 by a protruding piece 18 projecting downward into the battery mounting portion 12 from the bottom surface of the motor housing 4 and standing upright in the battery mounting portion 12 behind it. It is formed from a coil spring 17B provided in the front-rear direction between the receiving rib 19 and the receiving rib 19. As shown in FIG.

Therefore, in a normal state, the outer housing 7 and the handle housing 8 are elastically attached to the retracted position shown in FIG. The anti-vibration housing is biased to move relative to the inner housing 2 and the motor housing 4 back and forth against the bias of the coil springs 17A and 17B.
As shown in FIG. 2, vertical guide grooves 20, 20 are recessed on the left and right side surfaces of the front portion of the battery mounting portion 12, respectively. A concave portion 21 having a locking hole 22 formed on the upper surface is formed.

On the other hand, the output portion 3 has a tubular tool holder 23 that is held by the tubular barrel portion 2a on the front side of the inner housing 2 and extends in the front-rear direction. Below the tool holder 23, the output shaft 6 of the motor 5 protrudes into the inner housing 2. An intermediate shaft 24 is supported on the front side of the output shaft 6, and a crank shaft 25 is supported on the rear side in the vertical direction. Gears 26 , 26 provided on each shaft mesh with a pinion provided on the upper end of the output shaft 6 . A bevel gear provided on the upper end of the intermediate shaft 24 meshes with a bevel gear 27 rotatably mounted on the tool holder 23 . The bevel gear 27 transmits the rotation of the intermediate shaft 24 to the tool holder 23 by retracting and engaging the switching sleeve 28 spline-connected to the outer periphery of the tool holder 23 . can be switched by a switching knob 29 provided on the upper surface of the outer housing 7 .

A cylinder 30 is held in the rear portion of the tool holder 23 and a piston 31 is accommodated so as to be movable forward and backward. Concatenated. In front of the piston 31 in the cylinder 30, a striker 35 is accommodated through an air chamber 34 so as to be able to move back and forth. is provided. An operation sleeve 37 is provided at the front end of the tool holder 23 as an operation member for attaching and detaching the bit. Inside the front end of the operation sleeve 37, chuck members 37a, 37a are provided that engage with a retaining recess 74 (to be described later) provided on the bit through the tool holder 23, so that the operation sleeve 37 can be slid forward and backward. By locking/unlocking the movement of the chuck member 37a in the radial direction, the bit can be attached and detached.
In this hammer drill 1 , when the output shaft 6 rotates, the crankshaft 25 always rotates to move the piston 31 back and forth, so that the interlocking striker 35 hits the impact bolt 36 . Therefore, when the switching knob 29 is operated to switch the switching sleeve 28 to the retracted position, the tool holder 23 rotates through the bevel gear 27 to enter the hammer drill mode, and when the switching sleeve 28 is switched to the forward position, the tool holder 23 rotates. It becomes a hammer mode that only strikes without hitting.

The dust collector 40 has a box-shaped casing 41 , and the casing 41 is attached to the battery attachment portion 12 on the front side of the motor housing 4 and the handle housing 8 of the hammer drill 1 . A dust box 43 as a dust collector is detachably attached to a connecting portion 42 provided on the lower side of the casing 41 .
A rear wall portion 44 extending downward along the front surface of the battery mounting portion 12 is formed at the rear portion of the casing 41 , and the recessed portion 21 of the battery mounting portion 12 is formed at the center of the lower end of the rear wall portion 44 in the left-right direction. A protruding portion 45 that fits in is projected backward. A hook plate 46 having a forward-facing hook 47 projecting from its upper end is supported on the rear surface of the convex portion 45 so as to be able to swing back and forth by a pin 48 extending in the horizontal direction. A coil spring 49 that presses the lower end of the hook plate 46 backward is provided in the convex portion 45 , urging the hook plate 46 to a swing position on the front side where the upper end abuts the rear surface of the convex portion 45 . .

As shown in FIG. 2, a pair of side plates 50, 50 provided on the left and right sides of the rear wall portion 44 protrude rearward from the rear wall portion 44 so as to cover both side surfaces of the battery mounting portion 12. At the rear end of each side plate 50, engaging pieces 51, 51 are formed to engage with guide grooves 20, 20 provided on the left and right sides of the battery mounting portion 12, respectively.
Here, when the casing 41 is slid from below with the engaging pieces 51, 51 aligned with the guide grooves 20, 20, the convex portion 45 is fitted into the concave portion 21 from below, and the hook 47 of the hook plate 46 is engaged with the locking hole. 22 can be locked.

Further, a dust collection motor 52 is accommodated in the casing 41 with its output shaft 53 facing forward, and a dust collection fan 54 is provided at the front end of the output shaft 53 . A fan housing chamber 55 for housing a dust collecting fan 54 is defined in the casing 41, and device-side exhaust ports 56, 56 . ing.
The lower plate 57 of the casing 41 is formed with a communication port 58 that communicates with the suction side of the fan housing chamber 55 , and the upper plate 59 is formed with a cylindrical exhaust flow path 60 that communicates with the blowout side of the fan housing chamber 55 . It is formed to protrude upward.
Below the barrel portion 2a of the outer housing 7 of the hammer drill 1, there is formed an exhaust introduction port 7a into which the exhaust passage 60 is inserted when the dust collector 40 is mounted. A machine-side exhaust port 7b is formed on the lower surface of the housing 7 so that the air blown out from the exhaust passage 60 can pass through the tubular passage 38 between the barrel portion 2a and the outer housing 7. As shown in FIG.

A light 61 using an LED is provided at the upper front end in the casing 41 so that the front of the bit attached to the tool holder 23 can be illuminated when the hammer drill 1 is attached.
Between the rear wall portion 44 of the casing 41 and the battery mounting portion 12 of the handle housing 8 are provided terminals (not shown) that are electrically connected to each other when the casing 41 is mounted. Due to the connection, power for the dust collection motor 52 and the light 61 is obtained from the battery pack 13 via the controller 14 . Triggered by the ON operation of the switch 10, the dust collecting motor 52 is driven and the light 61 is turned on.

The dust box 43 is a box-shaped body attached to the coupling portion 42 from the front. It is detachably attached to the connecting portion 42 by engaging a locking portion (not shown) provided on the lower surface of the casing 41 . Inside the dust box 43, there is provided a filter housing portion 64 located below the communication port 58 in the attached state, and a paper filter 65 folded in the left-right direction with the front-rear direction as a crease is provided in the filter housing portion 64. It partitions the communication port 58 and the inside of the dust box 43 . A cylindrical introduction port 66 protrudes forward from the upper front surface of the dust box 43 .
Thus, in the dust collector 40 , air sucked from the inlet 66 enters the dust box 43 , passes through the filter 65 , and forms a dust collection path R from the communication port 58 to the fan housing chamber 55 .

A dust collecting bit 70 attached to the hammer drill 1 comprises a metal bit body 71 having a cutting edge at its front end, and a resin hose attachment portion 72 attached to the bit body 71 . At the rear end of a shank portion 73 formed at the rear end of the bit body 71, a pair of retaining recesses 74, 74 for inserting into the tool holder 23 of the hammer drill 1 and a pair of anti-rotation stoppers with different phases are provided. Grooves 75, 75 are formed in the axial direction, respectively.
A dust collection path 76 is formed in the axial center of the bit body 71 . The front end of the dust suction path 76 is bifurcated and a pair of suction ports 77 , 77 are opened in the front end surface of the bit body 71 . The rear end of the dust collection path 76 is bent radially at the mounting position of the hose attachment portion 72 to open an outlet 78 on the peripheral surface of the bit body 71 .

The hose attachment portion 72 includes a cylindrical exterior portion 79 that is externally rotatably mounted on the bit body 71, and a cylindrical portion that is connected to the exterior portion 79 and protrudes radially outward from the bit body 71 and has an open end. 80. The exterior portion 79 communicates with the tubular portion 80 to open the outlet 78 into the tubular portion 80 .
A flexible hose 81 is inserted between the tubular portion 80 and the inlet 66 of the dust collector 40 to allow the tubular portion 80 to generate a suction force at the inlet 66 . The flexible hose 81 has a dimension longer than the linear distance between the cylindrical portion 80 and the introduction port 66 and has a slight downward bend.

In the power tool dust collection system S configured as described above, when the dust collector 40 is attached to the hammer drill 1, the casing 41 is positioned in front of the battery attachment portion 12 of the hammer drill 1, and the side plate Either one of the engaging pieces 50, 50 is slid vertically so that the engaging pieces 51, 51 of the battery mounting portion 12 are engaged with the guide grooves 20, 20 of the battery mounting portion 12 from below. Then, the battery mounting portion 12 is fitted and coupled between the side plates 50, 50, and the hook 47 of the hook plate 46 is locked in the locking hole 22, completing the mounting. At this time, the exhaust passage 60 of the casing 41 is inserted into the exhaust introduction port 7 a of the outer housing 7 so that the fan accommodating chamber 55 communicates with the cylindrical passage 38 . In addition, the front surface of the casing 41 is located behind the chuck member 37a provided inside the operation sleeve 37 in the attached state.

Then, when the tip of the bit body 71 of the dust collecting bit 70 attached to the tool holder 23 is pressed against the surface of the workpiece to be machined, the switch lever 11 of the hammer drill 1 is pushed in to turn on the switch 10. The motor 5 drives, the output shaft 6 rotates, and the intermediate shaft 24 and the crankshaft 25 rotate. Here, as described above, the piston 31 always reciprocates regardless of whether the hammer drill mode or the hammer mode is selected.

Further, the power supply from the controller 14 also drives the dust collection motor 52 in the casing 41 to rotate the dust collection fan 54 . do. Therefore, in the dust collecting bit 70 , external air is drawn from the suction port 77 via the hose attachment portion 72 and the dust collecting path 76 . The sucked outside air passes through the dust collection path 76 and the hose attachment portion 72 and enters the dust box 43 from the introduction port 66 via the flexible hose 81 . Then, it passes through the filter 65, reaches the fan housing chamber 55 from the communication port 58, and is partly discharged to the outside from the device side exhaust port 56. As shown in FIG. Therefore, dust generated from the workpiece is sucked into the suction port 77, enters the dust box 43 via the hose attachment portion 72 and the flexible hose 81, is captured by the filter 65, and is stored in the dust box 43.

On the other hand, the other part of the outside air that has entered the fan housing chamber 55 passes through the exhaust passage 60 and the exhaust introduction port 7a of the outer housing 7 to reach the cylindrical passage 38, and flows between the barrel portion 2a and the outer housing 7. and is discharged from the exhaust port 7b on the main unit side. This air flow cools the barrel portion 2a.
In addition, a motor cooling fan 82 is provided on the output shaft 6 of the motor 5 , air intake ports 83 are provided on the left and right outer side surfaces of the controller 14 in the battery mounting portion 12 , and a battery is provided on the bottom surface of the motor housing 4 . An opening 84 communicating with the inside of the mounting portion 12 is formed. Therefore, the rotation of the motor cooling fan 82 accompanying the rotation of the output shaft 6 causes outside air to be sucked in from the intake port 83 to cool the controller 14, and then enter the motor housing 4 through the opening 84 to cool the motor 5. It is discharged from an exhaust port (not shown) provided in the outer housing 7 . Part of this cooling air joins the cylindrical flow path 38 to cool the barrel portion 2a, and is then discharged from the main unit side exhaust port 7b.

As the bit body 71 rotates, a rotational biasing force is applied to the hose mounting portion 72 in the direction of rotation of the bit body 71 due to the frictional force generated between the hose mounting portion 72 and the exterior portion 79 of the hose mounting portion 72 . Since a flexible hose 81 is connected between the shaped portion 80 and the inlet 66, rotation of the hose attachment portion 72 is suppressed. Even if dust or the like enters the sliding portion of the exterior portion 79 and the slidability deteriorates, the flexible hose 81 can provide the effect of suppressing the rotation.
In addition, the inner housing 2 and the motor housing 4 move back and forth due to vibrations generated during the drilling operation. However, the outer housing 7 and the handle housing 8 are moved back and forth relative to each other by the anti-vibration portions 15A and 15B as indicated by the two-dot chain line in FIG. be done. At this time, since the dust collector 40 is also attached to the battery attachment portion 12 of the handle housing 8, which is vibration-proof, the overall weight of the handle housing 8 increases and vibration is less likely to occur.

On the other hand, to remove the dust collector 40, the lower end of the hook plate 46 is pushed forward to release the engagement of the hook 47 with the engagement hole 22, and the hammer drill 1 and the dust collector 40 are mounted in the opposite manner to the attachment. When one of them is slid away from the other, the engaging pieces 51, 51 of the side plates 50, 50 are disengaged from the guide grooves 20, 20 of the battery mounting portion 12, completing the removal.
When the dust stored in the dust box 43 is discarded, the upper part of the dust box 43 is pulled forward to release the engagement with the casing 41, and then tilted forward about the locking shaft 62. , the dust box 43 can be detached from the connecting portion 42, and the dust accumulated inside can be discarded.

Thus, according to the power tool dust collection system S of the above embodiment, the hammer drill 1 to which the dust collecting bit 70 is mounted, the suction portion (introduction port 66) mounted to the hammer drill 1, and the dust collecting motor 52, a dust collection fan 54 that rotates when driven by the dust collection motor 52 to generate suction force in the introduction port 66, and a dust collection section (dust box 43) that stores the dust sucked from the introduction port 66. An exhaust passage (exhaust passage 60 and By including the cylindrical flow path 38), the exhaust air after dust collection can be effectively used for cooling the output part 3, which leads to extension of the life of the hammer drill 1.

In particular, here, the exhaust flow path 60 and the cylindrical flow path 38 communicate with each other by attaching the dust collector 40 to the hammer drill 1, so the connection between the exhaust flow path 60 and the cylindrical flow path 38 is reliable. can be done
In addition, since the cylindrical flow path 38 is also used as a flow path for the cooling air generated by the rotation of the motor cooling fan 82 provided in the hammer drill 1, the cooling air from the motor 5 is also used for cooling the output section 3. It becomes possible.
Furthermore, since the high-temperature part to be cooled is the output part 3, the output part 3, which tends to reach high temperatures, can be effectively cooled.

On the other hand, since the dust collector 40 is mounted in front of the motor accommodating portion (motor housing 4) that accommodates the motor 5 with the output shaft 6 facing upward, the space in front of the motor housing 4 is used to collect dust. A device 40 can be worn. In addition, since the dust collector 40 is mounted downwardly of the motor housing 4, the portion protruding forward is suppressed and the size is reduced in the front-rear direction.
Further, the housing of the hammer drill 1 is divided into a vibration-isolating side and a non-vibration-isolating side through the vibration-isolating portions 15A and 15B, and the cylindrical flow path 38 is divided into the housing (inner housing 2) on the vibration-isolating side and the non-vibration-isolating side. Since it is formed in the space between the housing (outer housing 7) on the anti-vibration side, the cylindrical flow path 38 can be easily obtained by using the divided housing.
Furthermore, since the dust collector 40 is attached to the housing (handle housing 8) on the anti-vibration side, a higher anti-vibration effect can be obtained.

The configuration of the exhaust passage is not limited to the above-described configuration, and the exhaust inlet of the outer housing and the exhaust port of the main unit may be reversed, and the exhaust passage of the dust collector side may be connected to the front side. good. Further, the machine-side exhaust port is not limited to the lower surface of the outer housing, but may be provided on the side surface or the upper surface, or may be plural. Furthermore, the exhaust passage on the hammer drill side does not have to be cylindrical.
On the other hand, the dust collection motor and the dust collection fan are not limited to the arrangement described above, and may be provided on the lower side of the casing or may be oriented differently. The power supply is not limited to being obtained from the hammer drill, but a battery may be mounted on the casing.
Also, the mounting structure of the dust collector to the hammer drill may be such that the casing is slid not in the vertical direction but in the front-rear direction, or it may be mounted in the lower portion of the handle housing.

In addition, although the dust collecting bit is provided in the above embodiment, the present invention is not limited to the use of the dust collecting bit. Therefore, the connection between the bit and the suction part is not limited to the structure using a flexible hose, and the present invention can be applied to a structure in which a suction part is provided in a nozzle protruding from the casing of the dust collector and the bit penetrates. is.

1 Hammer drill 2 Inner housing 2a Barrel part 3 Output part 4 Motor housing 5 Motor 6 Output shaft 7 Outer housing 7a Exhaust inlet 7b Exhaust port on main unit side 8 Handle housing 12 Battery mounting part 14 Controller 15A, 15B Anti-vibration part 23 Tool holder 35 Striker , 36... Impact bolt, 37... Operation sleeve, 37a... Chuck member, 40... Dust collector, 41... Casing, 42... Joint part, 43... Dust box, 52... Motor for dust collection, 54 Dust collecting fan 60 Exhaust flow path 65 Filter 66 Inlet 70 Dust collecting bit 71 Bit main body 72 Hose mounting portion 76 Dust collecting path 77 Suction port 80 Cylindrical part 81 Flexible hose R Dust collection path S Dust collection system for power tools.

Claims (7)

a power tool to which the bit is attached;
a dust collecting motor mounted on the power tool; a dust collecting fan that rotates when driven by the dust collecting motor to generate a suction force in the suction portion; and dust sucked from the suction portion. a dust collector comprising a dust collector for storing
an exhaust flow path formed in each of the power tool and the dust collector for guiding exhaust gas having passed through the dust collecting section to a predetermined high-temperature portion of the power tool;
comprising
The power tool is a hammer drill whose housing is divided into a vibration-isolating side and a non-vibration-isolating side via a vibration-isolating portion, and an exhaust passage on the hammer drill side is divided into the housing on the vibration-isolating side and the non-vibration-isolating side. A power tool dust collection system formed in the space between the housing on the anti-vibration side . 2. A power tool dust collection system according to claim 1, wherein said exhaust passages communicate with each other by mounting said dust collector on said hammer drill . 3. The power tool according to claim 1, wherein the exhaust passage on the hammer drill side is also used as a passage for cooling air generated by rotation of a fan provided inside the hammer drill . dust collection system. 4. A power tool dust collection system according to any one of claims 1 to 3, wherein the hammer drill has an output section including a striking mechanism , and the high temperature section is the output section. 5. The hammer drill according to any one of claims 1 to 4, wherein the hammer drill comprises a motor accommodating portion that accommodates a motor with an output shaft facing upward, and the dust collector is mounted in front of the motor accommodating portion. A dust collection system for a power tool according to any one of the above. 6. The power tool dust collection system according to claim 5, wherein the dust collector is mounted below the motor accommodating portion. 7. The dust collection system for a power tool according to claim 1 , wherein the dust collector is attached to the housing on the anti-vibration side.

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