JP2013078831A - Power tool dust collecting device and power tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power tool dust collecting device in which the obstruction of the sliding of an adjustment member for adjusting a position where a ventilation member moves rearward is reduced, and to provide a power tool to which the power tool dust collecting device is mounted.SOLUTION: There is provided the power tool dust collecting device in which a ventilation member 61 which protrudes toward the front and can slide in a front-rear direction is provided at a front end of a housing in which a hammer drill can be mounted, a suction port and a guide rail having a recessed groove 63 of which the bottom 64 extends in a front-rear direction are formed in the ventilation member, an air path through which air sucked from the suction port passes through the ventilation member and reaches a discharge port formed at the housing is formed in the housing, a filter collecting dust in the air is housed on the air path, and the adjustment member sliding in the front-rear direction along the recessed groove and capable of adjusting the position where the ventilation member moves rearward by being locked at an optional sliding position is provided at the ventilation member. A first communication port 67 making the inside of the recessed groove communicate with the outside is formed in the bottom of the recessed groove.

Description

  The present invention relates to a dust collector for an electric tool to be attached to an electric tool such as an electric drill or a hammer drill, and an electric tool equipped with the dust collector for an electric tool.

  For example, in Patent Document 1, a ventilation member is protruded at the front end of a housing to which an electric drill can be attached, and the ventilation member is provided with a suction port and a guide rail having a concave groove whose bottom extends in the front-rear direction. A dust collector for a power tool is disclosed. In addition to the slidably projecting ventilation member, the housing of the dust collector for an electric tool accommodates a filter that collects dust, and adjusts to slide while fitting in the groove. By providing a member and locking the adjusting member at an arbitrary position, the retracted position (processing depth) of the ventilation member can be adjusted.

  In the dust collector for an electric tool configured as described above, the position of the adjustment member is adjusted so that the suction port is brought into close contact with the drilling portion of the work piece, and the rotation of the fan of the electric drill causes the air from the drilling portion and the like. The generated dust is sucked from the suction port, and after passing the dust through the ventilation member, the dust is collected by the filter.

German Patent Application No. 102006029625

  However, if the dust collector for an electric tool equipped with the electric tool such as the electric drill is used in an environment where there is a lot of dust, it is conceivable that the dust enters the concave groove of the ventilation member. In such a case, there is a concern that the sliding of the adjusting member is hindered when dust is sandwiched between the adjusting member and the groove.

  The present invention has been proposed in view of such a situation, and is a dust collector for an electric tool that reduces the obstruction of the sliding of an adjusting member that adjusts the retracted position of the ventilation member, and the electric tool collector. An object is to provide a power tool equipped with a dust device.

  The dust collector for an electric tool according to the invention of claim 1 is provided with a ventilation member that protrudes forward and is slidable in the front-rear direction at the front end of the housing to which the electric tool can be mounted. A suction rail and a guide rail having a concave groove whose bottom extends in the front-rear direction are formed, and air sucked from the suction port is formed in the housing through the ventilation member in the housing. An air passage that leads to the outlet is formed, a filter that collects dust in the air is accommodated on the air passage, and the ventilation member is slid in the front-rear direction along the concave groove. A dust collector for an electric tool provided with an adjustment member capable of adjusting a retreat position of the ventilation member by locking at a sliding position, wherein the inside of the concave groove communicates with the bottom of the concave groove. Having formed the first communication port And features.

  According to a second aspect of the present invention, in the first aspect, the vent groove is formed with the concave groove having an upper opening.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the hose can be expanded and contracted in the front-rear direction by the air passing through the vent member and sliding in the front-rear direction. Then, the first communication port is formed so as to communicate with the inside of the ventilation member, and the second communication port for communicating the inside with the outside of the ventilation member is formed on the bottom surface of the ventilation member. It is characterized by.

  According to a fourth aspect of the present invention, there is provided a power tool comprising the power tool dust collecting device according to any one of the first to third aspects.

According to the dust collector for an electric tool according to the invention of claim 1 and the electric tool according to the invention of claim 4, when the adjusting member slides along the concave groove of the ventilation member, the dust that has entered the concave groove Can be discharged from the first communication port to the outside of the concave groove by being carried to the first communication port by the adjusting member. Therefore, as a result of the dust being difficult to be sandwiched between the adjustment member and the groove, it is possible to reduce that the sliding of the adjustment member is hindered by the dust in the groove.
According to the second aspect of the present invention, even when dust enters the concave groove from the upper opening, when the adjusting member slides along the concave groove, the dust that has entered the concave groove is communicated by the adjusting member with the first communication. By pushing it to the mouth, it can be discharged from the first communication port to the outside of the groove.
According to the third aspect of the present invention, the dust that has entered the concave groove can be discharged to the outside of the ventilation member from the second communication port of the ventilation member after being discharged from the first communication port to the inside of the ventilation member.

It is a side view of the hammer drill equipped with the dust collector for electric tools of the embodiment of the present invention. It is side sectional drawing of the hammer drill equipped with the dust collector for the electric tool. It is a perspective view of the dust collector for the electric tool which removed the dust box. It is a perspective view of the operation button operated when removing the hammer drill from the power tool dust collector. It is a principal part top view of the ventilation member which comprises the dust collector for electric tools. It is a longitudinal cross-sectional view of the ventilation member. It is a principal part rear view of the ventilation member.

  An embodiment of the present invention will be described with reference to FIGS. 1 and 2 show a state in which a dust collector 30 for an electric tool (hereinafter referred to as a dust collector 30) is mounted on the hammer drill 1, and FIG. 3 shows the dust collector 30. The hammer drill 1 is provided with a main body housing 2 formed of resin in an example of the electric tool of the present invention. 1 and 2, the left side is the front side of the main body housing 2, and the right side is the rear side of the main body housing 2. As shown in FIG. 2, a motor 4 with the output shaft 3 facing upward is accommodated in the lower part on the front side in the main body housing 2. An intermediate shaft 5 is supported above the output shaft 3 in the main body housing 2 in a direction intersecting with the output shaft 3, and the intermediate shaft 5 transmits torque from the output shaft 3 via bevel gears 6 and 6. The intermediate shaft 5 includes a first gear 7, a clutch 8, and a boss sleeve 9 in order from the front side. A tool holder 10 is pivotally supported in parallel to the intermediate shaft 5 above the intermediate shaft 5 in the main body housing 2, and a bit 11 can be inserted into the tip of the tool holder 10. A piston cylinder 12 is loosely inserted on the rear side of the tool holder 10, and an arm 13 covered with a boss sleeve 9 is connected to the rear end of the piston cylinder 12. Inside the piston cylinder 12, an impact bolt 14 is accommodated in the front side, and a striker 15 that strikes the impact bolt 14 in the rear side is accommodated so as to be able to move forward and backward. The first gear 7 meshes with the second gear 16 attached to the tool holder 10.

  On the other hand, as shown in FIG. 2, a handle 20 having a switch 18 and a switch lever 19 is formed on the upper rear side of the main body housing 2, and a battery pack 21 serving as a power source is mounted below the handle 20. Has been. In addition, the front lower portion of the main body housing 2 is a mounting portion 22 to which the dust collecting device 30 is mounted, with the front surface inclined downward and protruding forward of the battery pack 21. A controller 23 is accommodated in the mounting portion 22, and the coil of the motor 4, the switch 18, and the battery pack 21 are electrically connected to the controller 23. Furthermore, a guide groove 24 whose front end opens to the front side is recessed in the front-rear direction at the center in the left-right direction on the lower surface of the mounting portion 22.

  A connector 25 in which three female terminals for power supply and communication are arranged in parallel in the left-right direction at a predetermined interval is provided on the front upper portion of the controller 23 in the mounting portion 22. The connector 25 has a rectangular tube shape with an opening on the front side, and a shutter portion 26 is integrally formed upward at the front end of the upper surface of the connector 25. A pressing piece 27 is supported at the center of the lower surface of the mounting portion 22 and below the connector 25 so as to be movable in the vertical direction.

  Further, a rectangular insertion port 28 is formed on the front side of the connector 25 on the front surface of the mounting portion 22. The connector 25 has a connection position in which the shutter portion 26 is retracted to the upper side of the insertion port 28 and the opening is positioned immediately behind the insertion port 28, and the opening portion is positioned so that the shutter portion 26 is positioned immediately behind the insertion port 28. It can be rotated to a non-connection position where it is retracted below the slot 28. However, when the dust collector 30 is not attached to the hammer drill 1, the connector 25 is rotationally biased to a non-connection position where the shutter portion 26 closes the insertion port 28 by a torsion spring (not shown). In this non-connected position, the pressing piece 27 is pressed by the connector 25 retracted downward, passes through the mounting portion 22 and protrudes into the guide groove 24.

  As shown in FIGS. 1 and 2, the dust collector 30 includes a housing 31 that is L-shaped in side view. In FIGS. 1 and 2, the left side is the front side of the housing 31, and the right side is the rear side of the housing 31. A fitting recess 32 (see FIG. 3) that fits into the mounting portion 22 of the hammer drill 1 is formed in the rear upper portion of the housing 31. As shown in FIG. 2, the rear side of the housing 31 is partitioned by a partition member 33 into a fan chamber 34 and a motor housing chamber 35 that are adjacent to each other in the front-rear direction of the housing 31.

  In the motor housing chamber 35, a motor 36 with the output shaft 37 facing frontward is housed sideways. Further, a controller 38 is accommodated in the motor accommodating chamber 35 on the rear side of the motor 36. A button housing chamber 45 (see FIG. 3) that opens to the right side surface of the housing 31 and houses the operation buttons 39 (see FIGS. 3 and 4) is provided on the upper right side in the motor housing chamber 35. Yes. This operation button 39 locks the coupled state of the dust collecting device 30 to the hammer drill 1 and pushes the dust collecting device 30 inward into the button housing chamber 45 when the dust collecting device 30 is removed from the hammer drill 1. Therefore, the button housing chamber 45 is biased outward. As shown in FIG. 4, the operation button 39 is formed with upper ribs 40 and 40 projecting upward from the upper surface and lower ribs 41 and 41 projecting downward from the lower surface. When the operation button 39 is pushed in, the ribs 40 and 41 are guided inward of the button storage chamber 45 along the inner wall surface of the button storage chamber 45. Between the inner wall surface of the button accommodating chamber 45 and the portion where the ribs 40, 40 on the upper surface of the operation button 39 do not protrude, or between the inner wall surface and the portion where the ribs 41, 41 on the lower surface of the operation button 39 do not protrude. , The gap is secured.

  As shown in FIG. 2, the output shaft 37 enters the fan chamber 34 from the opening of the partition member 33. The dust collecting fan 50 fixed to the output shaft 37 is accommodated in the fan chamber 34. In addition, as shown in FIGS. 2 and 3, a coupling portion 52 of a dust box 85 (see FIGS. 1 and 2) described later is formed on the upstream side of the fan chamber 34 in the housing 31. The coupling portion 52 has a concave shape with only the front side opened, and a partition wall 53 serving as a bottom of the coupling portion 52 has a communication hole that allows the coupling portion 52 to communicate with the fan chamber 34 on the same axis as the dust collecting fan 50. 54 is formed.

  As shown in FIG. 2, on the upper rear surface of the housing 31, three plate-shaped male terminals 55 for power supply and for communication lines are juxtaposed at a predetermined interval in the left-right direction with the rear side protruding. Yes. On the upper surface of the rear portion of the housing 31, a pressing rail 56 that fits in the guide groove 24 provided in the mounting portion 22 of the hammer drill 1 protrudes in the front-rear direction of the housing 31. At the rear end of the pressing rail 56, an inclined surface whose height decreases as it goes to the rear side is formed. A pair of guide rails 57, 57 (see FIG. 3) are erected on the left and right sides of the pressing rail 56 at intervals at which the lower portion of the mounting portion 22 can be fitted, and the upper ends of the guide rails 57. A protrusion 58 (see FIG. 3) that can be fitted into a coupling groove (not shown) provided on the side surface of the mounting portion 22 is provided so as to protrude inward.

  Further, as shown in FIG. 2, a guide passage 60 that opens in the front side and turns in a U-shape on the rear side and wraps around the rear of the coupling portion 52 is formed in the front-rear direction of the housing 31 above the coupling portion 52 in the housing 31. Is formed. A ventilation member 61 is connected to the front end of the guide passage 60 corresponding to the front end of the housing 31 so as to protrude forward and be inserted into the guide passage 60. The ventilation member 61 has a hollow cross section as shown in FIG. As shown in FIGS. 1, 3, and 6, a guide rail portion 62 that is long in the front-rear direction (left-right direction in FIG. 1) of the ventilation member 61 is formed on the upper right side of the ventilation member 61 when viewed from the front. As shown in FIGS. 5 and 6, the guide rail portion 62 is provided with a first concave groove 63 having a bottom portion 64 extending in the front-rear direction and opened upward. A first convex portion 66 (see FIG. 3) that can contact the upper surface of the guide rail portion 62 is formed on the upper front end of the housing 31 downward. By sliding the upper surface of the guide rail portion 62 in the front-rear direction along the first convex portion 66, the ventilation member 61 slides smoothly in the front-rear direction. The first groove 63 is an example of the groove according to the present invention.

  As shown in FIGS. 5 and 6, the bottom 64 of the first groove 63 is formed with a plurality of rectangular first communication ports 67 that allow the inside of the first groove 63 to communicate with the outside. Here, each first communication port 67 is formed so that the inside of the first concave groove 63 communicates with the inside of the ventilation member 61. On the other hand, as shown in FIGS. 6 and 7, an oblong second communication port 68 that allows the inside of the ventilation member 61 to communicate with the outside is formed on the bottom surface of the ventilation member 61.

  Further, as shown in FIGS. 6 and 7, a second concave groove 69 is formed in the lower right portion of the ventilation member 61 when viewed from the front, and extends downward in the front-rear direction. As shown in FIG. 3, a second convex portion 70 is formed on the lower portion of the front end of the housing 31 so as to be able to contact the lower right portion of the ventilation member 61 when viewed from the front. When the upper surface of the guide rail portion 62 of the ventilation member 61 is slid in the front-rear direction along the first convex portion 66, the lower right portion of the ventilation member 61 is also guided in the front-rear direction along the second convex portion 70. . In addition, a plurality of rectangular third communication ports 71 (see FIG. 7) communicating with the inside of the second concave groove 69 are formed on the bottom surface of the ventilation member 61. Each third communication port 71 allows the inside of the ventilation member 61 to communicate with the outside. Each of the third communication ports 71 is disposed in a state where the position of each third communication port 71 is shifted from that of each of the first communication ports 67 in the front-rear direction.

  As shown in FIGS. 1 and 3, a rack 73 extending in the front-rear direction is formed on the right side surface of the ventilation member 61 when viewed from the front. A guide portion 74 of the retaining member 75 of the ventilation member 61 is provided so as to project sideways on the right side surface in front view at the front end of the housing 31. The guide portion 74 is formed with a guide hole 76 that penetrates in the front-rear direction and into which the rack 73 is movable when the ventilation member 61 is slid in the front-rear direction. Further, as shown in FIGS. 5 and 6, an engagement convex portion 83 projecting sideways is provided on the right side surface of the ventilation member 61 when viewed from the front. When the elastic engagement piece (not shown) of the retaining member 75 is engaged with the engagement convex portion 83, the maximum projecting position of the ventilation member 61 toward the front side is defined. Further, an adjustment member 84 that is slidable in the front-rear direction of the rack 73 and engageable with the rack 73 at an arbitrary position in the front-rear direction is provided on the right side surface of the ventilation member 61 when viewed from the front. The adjusting member 84 is used to adjust the insertion depth of the bit 11 with respect to the workpiece. Under normal conditions, the engaging claw portion (not shown) of the adjusting member 84 is biased downward by the coil spring, and the fitting convex portion (not shown) of the adjusting member 84 is formed in the first concave groove 63. On the other hand, it is fitted from above. When the engaging claw is engaged with the rack 73, the adjusting member 84 is locked.

  In addition, as shown in FIGS. 1 to 3, a nozzle 77 having an L shape in side view is connected to the front end of the ventilation member 61, and a suction port 78 is connected to the tip of the nozzle 77. A flexible hose 79 (see FIG. 2) is accommodated in the ventilation member 61, and the front end of the flexible hose 79 is connected to the nozzle 77. In addition, a cylindrical duct 80 folded in a U shape along the rear end shape of the guide passage 60 is connected to the rear end of the flexible hose 79. In conjunction with sliding the ventilation member 61 in the front-rear direction, the flexible hose 79 can be expanded and contracted in the front-rear direction with the front end connected to the nozzle 77 and the rear end connected to the duct 80. Air outlets 81 and 81 (see FIGS. 2 and 3) are opened at the rear end of the duct 80, and the air outlets 81 and 81 project into the coupling portion 52 through the partition member 33. The flexible hose 79 is an example of the hose of the present invention.

  As shown in FIG. 2, a dust box 85 is detachably attached to the coupling portion 52. The dust box 85 includes a rectangular parallelepiped box main body 86 and a lid 87 hinged to the opening of the box main body 86. The lid 87 is formed with an inlet 88 on one end in the vertical direction and an outlet 89 on the other end. A filter unit 90 is mounted in the dust box 85 at a position covering the outlet 89 with the filter surface 92 of the paper filter 91 protruding. In a state in which the dust box 85 is attached to the coupling portion 52, the rear end of the duct 80 is fitted to the inlet 88, the outlets 81 and 81 protrude into the dust box 85, and the outlet 89 faces the communication hole 54.

  Next, the operation of attaching the dust collecting device 30 to the hammer drill 1 and collecting dust generated from the workpiece will be described. When the dust collector 30 is mounted on the hammer drill 1, the guide rails 57, 57 of the housing 31 are aligned with the lower portion of the mounting portion 22 of the hammer drill 1 so that the mounting portion 22 is positioned on the rear portion of the housing 31. The dust collector 30 is slid rearward so that the fitting recess 32 is fitted to the portion 22 from the front. Then, the pressing rail 56 of the dust collector 30 is fitted into the guide groove 24 of the mounting portion 22 and the protrusion 58 of the guide rail 57 is fitted into the coupling groove of the mounting portion 22 so as to slide rearward. At this time, the pressing rail 56 comes into contact with the pressing piece 27, but the inclined surface of the pressing rail 56 pushes the pressing piece 27 upward, so that the connector 25 has the shutter portion 26 retracted upward and the opening of the insertion port 28. Move to the connection position located directly behind. After that, the male terminal 55 of the dust collector 30 enters the main body housing 2 of the hammer drill 1 from the opened opening 28, and the male terminal 55 is inserted into the female terminal at the same time that the mounting portion 22 is fitted into the fitting recess 32. To be electrically connected.

  Thereafter, the operator slides the adjustment member 84 upward against the urging force of the coil spring to release the engagement of the engagement claw portion with respect to the rack 73. And the fitting convex part of the adjustment member 84 is slid along the 1st ditch | groove 63, and the insertion depth of the bit 11 with respect to a workpiece is adjusted. When the operator releases his / her hand from the adjustment member 84 after this adjustment is completed, the adjustment member 84 is urged downward by the elastic force of the coil spring. As a result, the engaging claw portion engages with the rack 73 and the adjustment member 84 returns to the locked state.

  Subsequently, when the operator pushes the switch lever 19 of the hammer drill 1 to turn on the switch 18, the motor 4 is driven to rotate the intermediate shaft 5. At this time, by operating a switching knob 29 (see FIG. 1) provided on the side surface of the main body housing 10, the clutch 8 is slid so that only the first gear 7 is engaged, and only the boss sleeve 9 is engaged. A drill in which the tool holder 10 is rotated via the second gear 16 to rotate the bit 11 by selecting one of the retracted position to be engaged and the intermediate position simultaneously engaged with the first gear 7 and the boss sleeve 9. Mode, hammer mode in which the piston cylinder 12 is reciprocated by the swing of the arm 13, and the bit 11 is struck through the impact bolt 14 by the interlocking striker 15, and the hammer that simultaneously rotates the tool holder 10 and strikes the bit 11. The drill mode can be selected. When the hammer drill 1 is advanced in a state where the suction port 78 is in contact with the processing surface of the workpiece, the ventilation member 61 moves backward and the hammer drill 1 moves forward until the adjustment member 84 hits the guide portion 74, and the bit 11 is moved to the suction port. The workpiece can be machined through 78.

  Further, when the switch 18 is turned on, the controller 23 supplies power to the controller 38 of the dust collector 30. Therefore, the controller 38 drives the motor 36 to rotate the dust collection fan 50. Thereby, the outside air sucked from the suction port 78 passes through the flexible hose 79 and the duct 80 in the ventilation member 61 and is discharged into the dust box 85 from the outlets 81 and 81. The air discharged into the dust box 85 wraps around the front side of the filter unit 90 and passes through the filter 91 from the filter surface 92. The air that has passed through the filter 91 reaches the fan chamber 34 from the outlet 89 through the communication hole 54, and is discharged to the outside of the fan chamber 34 through an air outlet that communicates the fan chamber 34 and the outside of the dust collector 30. . Therefore, the dust generated from the processed portion of the workpiece by the bit 11 is sucked together with the outside air from the suction port 78 and enters the dust box 85, and then from the suction port 78 to the air discharge port via the flexible hose 79 and the duct 80. It is captured by the filter 91 located on the air path to reach.

  By using the hammer drill 1 equipped with the dust collecting device 30 in a place where there is a lot of dust, the dust that has entered the first concave groove 63 causes the adjustment member 84 to be prevented from sliding in the front-rear direction. In order to reduce this hindrance to sliding, in this embodiment, dust that has entered the first groove 63 can be discharged from the first communication port 67 to the outside of the first groove 63 as described below. . When the adjusting member 84 is slid, the dust that has entered the first concave groove 63 from the upper opening is pushed and carried by the fitting convex portion of the adjusting member 84 that fits in the first concave groove 63. When the fitting convex portion reaches the closest position of the first communication port 67 while the adjustment member 84 is slid, the dust carried by the fitting convex portion is passed through the first communication port 67 to the ventilation member 61. It is discharged into the inside. Therefore, it becomes difficult for the dust to be caught between the first concave groove 63 and the fitting convex portion of the adjustment member 84, and the sliding of the adjustment member 84 can be reduced.

  Further, the dust discharged from the first concave groove 63 to the inside of the ventilation member 61 is discharged to the outside of the ventilation member 61 from the second communication port 68 or the third communication port 71 that opens on the bottom surface of the ventilation member 61. Therefore, dust can be prevented from accumulating inside the ventilation member 61. In addition, since a gap is ensured between the rack 73 and the guide hole 76, even if dust enters between the rack 73 and the guide hole 76, the dust is separated between the rack 73 and the guide hole 76. It can suppress fitting in between. As a result, it is possible to reduce that the movement of the rack 73 in the guide hole 76 is hindered by dust while the ventilation member 61 is slid.

  In addition, between the inner wall surface of the button accommodating chamber 45 and the portion where the ribs 40, 40 on the upper surface of the operation button 39 do not protrude, or the portion where the rib 41, 41 on the lower surface of the inner wall surface and the operation button 39 does not protrude, Since the clearance is secured between the operation button 39 and the inner wall surface, it is possible to suppress the dust from being fitted between the operation button 39 and the inner wall surface. As a result, it is possible to reduce that the pressing operation of the operation button 39 is hindered by dust. In addition, since an opening (not shown) that communicates with the motor storage chamber 35 is formed in the button storage chamber 45, the button storage is performed from the gap between the inner wall surface of the button storage chamber 45 and the operation button 39. The dust that has entered the chamber 45 can be once discharged into the motor housing chamber 35 through the opening.

<Effect of this embodiment>
In the dust collector 30 of this embodiment and the hammer drill 1 equipped with the dust collector 30, the adjusting member 84 enters the first concave groove 63 when sliding along the first concave groove 63 of the ventilation member 61. The pushed dust can be discharged to the outside of the first concave groove 63 from the first communication port 67 by being carried to the first communication port 67 by the fitting convex portion of the adjustment member 84. Therefore, dust can be prevented from being caught between the adjusting member 84 and the first concave groove 63, so that the sliding of the adjusting member 84 is prevented from being hindered by the dust in the first concave groove 63.

  Further, even when dust enters the first concave groove 63 opened upward, when the adjustment member 84 slides along the first concave groove 63, the first concave groove 63 enters the first concave groove 63. The dust can be discharged to the outside of the first groove 63 from the first communication port 67 after being pushed and carried to the first communication port 67 by the adjusting member 84.

  Furthermore, after the dust that has entered the first concave groove 63 is discharged from the first communication port 67 to the inside of the ventilation member 61, it can be discharged from the second communication port 68 of the ventilation member 61 to the outside of the ventilation member 61.

  The present invention is not limited to the above-described embodiment, and can be implemented by appropriately changing a part of the configuration without departing from the spirit of the invention. For example, unlike the above-described embodiment, the first concave groove provided in the guide rail portion 62 of the ventilation member 61 may have a shape that is open on the side surface of the guide rail portion 62 after closing the upper portion. In this case, the ventilation member 61 may be provided with an adjustment member 84 that fits into the first groove from the side.

  Further, unlike the above-described embodiment, the dust collecting fan is housed in the hammer drill 1 without being housed in the dust collecting apparatus 30, and the inside of the dust collecting apparatus 30 on the air passage extending from the ventilation member 61 to the dust collecting fan. Dust may be collected with a filter arranged in the above. Furthermore, although the example which mounted | wore the hammer drill 1 with the dust collector 30 was shown in embodiment mentioned above, this invention is applied to electric tools, such as an electric drill, if not only this but a dust collector can be mounted | worn. May be.

  1 .... Hammer drill, 30 ... Dust collector, 31 ... Dust collector housing, 61 ... Ventilation member, 62 ... Guide rail, 63 ... First groove, 64 ... First groove Bottom part 66... First convex part 67... First communication port 68.. Second communication port 78.. Suction port 79 .. Flexible hose 84.. Adjustment member 91.

Claims (4)

A ventilation member that protrudes forward and slides in the front-rear direction is provided at the front end of the housing to which the electric tool can be mounted, and the ventilation member has a suction port and a concave groove whose bottom extends in the front-rear direction. A guide rail is formed in the housing, and an air passage through which the air sucked from the suction port passes through the ventilation member and reaches a discharge port formed in the housing is formed on the air passage. A filter that collects dust in the air is accommodated, and the ventilation member is slid in the front-rear direction along the concave groove and locked at an arbitrary sliding position to set the retreat position of the ventilation member. A dust collector for an electric tool provided with an adjustable adjustment member,
A dust collector for an electric power tool, wherein a first communication port for communicating the inside of the groove with the outside is formed at the bottom of the groove.   The dust collector for an electric tool according to claim 1, wherein the groove having an upper opening is formed in the ventilation member. Inside the ventilation member, the air passes, and a hose which can be expanded and contracted in the front-rear direction by sliding the ventilation member in the front-rear direction is accommodated,
The first communication port is formed so as to communicate with the inside of the ventilation member, and a second communication port that communicates the inside with the outside of the ventilation member is formed on the bottom surface of the ventilation member. The dust collecting apparatus for electric tools according to claim 1 or 2.   A power tool comprising the power tool dust collector according to any one of claims 1 to 3.

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