Dust collector, work machine, and work machine system

Abstract

To improve work efficiency.SOLUTION: In a hammer drill 10, dust collection equipment 40 is assembled to a hammer drill body 11 in an attachable / detachable manner, an outlet portion 42B for a body of the dust collector 40 is connected to a body side air suction port 13A of the hammer drill body 11. The dust collection equipment 40 has an outlet portion 58 for a dust collector, and the outlet portion 58 for the dust collector can be connected to a connection hose 95 of a dust collector 90. A hammer drill system S1 can be therefore switched between a first work form in which a working work is performed while the dust collector 90 is connected to the dust collection equipment 40 of the hammer drill 10, and a second work form in which the working work is performed with the hammer drill 10 alone. That is, an operator can select a form of the hammer drill system S1 according to work content.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a dust collecting device, a work machine, and a work machine system. [Background technology]

[0002] In a working machine such as a hammer drill, a dust collecting device is attached to the working machine, and the dust collecting device sucks up dust generated during the working machine's operation. For example, in the dust collecting device described in the following Patent Document 1, the dust collecting device sucks up dust generated during the working machine's operation by an airflow generated by a fan provided inside the working machine. In the dust collecting device described in the following Patent Document 2, the dust collecting device sucks up dust generated during the working machine's operation by an airflow generated by a fan provided inside the dust collecting device. The sucked up dust is then collected in a dust collecting chamber of the dust collecting device, and the dust collected in the dust collecting chamber is disposed of by the worker. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-201526 A [Patent Document 2] JP 2018-69397 A Summary of the Invention [Problem to be solved by the invention]

[0004] Here, in the operation of the work machine, depending on the working style, a large amount of dust may be generated during processing. In this case, the dust in the dust collection chamber becomes full quickly, so the number of times the worker must dispose of the dust tends to increase. This may make the work complicated and reduce the workability.

[0005] In consideration of the above, an object of the present invention is to provide a dust collecting device, a work machine, and a work machine system that can improve workability. [Means for solving the problem]

[0006] One or more embodiments of the present invention are a dust collection device that is detachably attached to a work machine body and sucks up dust generated when the work machine body is processed, the dust collection device including a suction section that sucks in air containing the dust from the outside, a first discharge section that discharges the air sucked from the suction section to the outside, an air passage connecting between the suction section and the first discharge section, and a filter section provided in the air passage; a dust collection chamber provided in the air passage closer to the suction unit than the filter unit for collecting the dust; The above Dust collection chamber and a second discharge section configured to be connectable to a dust collector separate from the work machine body.

[0007] In one or more embodiments of the present invention, the air passage includes an upstream air passage that constitutes a portion on the suction section side of the filter section, and a downstream air passage that constitutes a portion on the first discharge section side of the filter section, Dust collection chamber in the upstream air passage It is provided It is a dust collection device.

[0009] In one or more embodiments of the present invention, the filter section has a filter chamber that houses a filter, and the dust collection chamber and the filter chamber are partitioned by a partition wall.

[0010] In one or more embodiments of the present invention, the second exhaust section is a dust collection device connected to both the dust collection chamber and the filter chamber.

[0011] In one or more embodiments of the present invention, the dust collection chamber includes a first dust collection chamber and a second dust collection chamber provided between the first dust collection chamber and the filter chamber on the air passage, and the second discharge section is a dust collection device connected to all of the first dust collection chamber, the second dust collection chamber, and the filter chamber.

[0012] One or more embodiments of the present invention provide a dust collecting device in which a cyclone section is provided in the upstream air passage, and the cyclone section separates the air and dust sucked through the suction section, discharges the separated dust into the dust collecting chamber, and exhausts the separated air into the filter chamber.

[0013] One or more embodiments of the present invention are a dust collecting device in which the dust collection case section is formed by the dust collection chamber, the filter chamber, the first discharge section, and the second discharge section, and an intake nozzle section having the suction section extends from the dust collection case section, and the second discharge section is positioned on the extension direction side of the intake nozzle section relative to the filter section.

[0014] One or more embodiments of the present invention are directed to a dust collecting device including a lid portion that can open and close the second discharge portion.

[0015] In one or more embodiments of the present invention, the first exhaust section is connected to a main body side air intake port of the work machine body, and is a dust collection device that sucks in dust generated during processing of the work machine body by an air flow generated by a main body side air blowing section of the work machine body.

[0016] One or more embodiments of the present invention are directed to a dust collecting device comprising an air blower section provided in the air passage and configured to generate an air flow that flows from the suction section to the first discharge section.

[0017] One or more embodiments of the present invention are a work machine comprising a dust collection device of the above-described configuration, a work machine body including a main body motor, a tool tip driven by the driving force of the main body motor, and a main body blower unit rotated by the driving force of the main body motor.

[0018] In one or more embodiments of the present invention, the main body side blower is attached to a drive shaft of the main body side motor.

[0019] One or more embodiments of the present invention are a work machine system comprising: a work machine having the above-described configuration; and a dust collector comprising a dust collector side motor, a dust collector side fan driven by the driving force of the dust collector side motor, and a dust collector side connection part connected to the second exhaust section of the dust collector and sucking in air from inside the dust collector by the airflow generated by the dust collector side fan. Effect of the Invention

[0020] According to one or more embodiments of the present invention, workability can be improved. [Brief description of the drawings]

[0021] [Figure 1] 1 is a side view showing a hammer drill system according to a first embodiment. [Diagram 2] 2 is a left side view showing the hammer drill of the hammer drill system shown in FIG. 1. [Diagram 3] 3 is a cross-sectional view showing the inside of the hammer drill shown in FIG. 2 as viewed from the left side. [Figure 4] 4 is a cross-sectional view (cross-sectional view taken along line 4-4 in FIG. 3) showing the inside of a rear end portion of a cyclone portion of the hammer drill body shown in FIG. 3 as viewed from the front side. [Diagram 5] 5 is a cross-sectional view (cross-sectional view taken along line 5-5 in FIG. 3) showing the dust collecting portion of the hammer drill body shown in FIG. 3 as viewed from above. [Figure 6] 2 is a cross-sectional view showing the inside of a dust collector of the hammer drill system shown in FIG. 1. [Figure 7] FIG. 6 is a cross-sectional view showing a hammer drill of a hammer drill system according to a second embodiment. [Figure 8] 1. FIG. 4 is an explanatory diagram illustrating a modified example of the dust collecting device of the hammer drill system shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] (First embodiment) Hereinafter, a hammer drill system S1 as a working machine system according to the first embodiment will be described with reference to Figs. 1 to 6. As shown in Fig. 1, the hammer drill system S1 includes a hammer drill 10 as a working machine and a dust collector 90. The hammer drill 10 includes a hammer drill body 11 as a working machine body and a dust collector 40, and the dust collector 40 is attached to the hammer drill body 11. The hammer drill system S1 is configured to be switchable between two working modes, namely, a first working mode in which a working operation is performed with a connection hose 95 of the dust collector 90 attached to the dust collector 40, and a second working mode in which the connecting hose 95 of the dust collector 90 is removed from the dust collector 40 and the hammer drill 10 alone performs the working operation, depending on the contents of the processing. In the first working mode, dust generated during processing is accumulated in the dust collector 90. On the other hand, in the second working mode, dust generated during processing is accumulated in the dust collector 40. Each component of the hammer drill system S1 will be described below.

[0023] (About Hammer Drill 10) The configuration of the hammer drill 10 will be described with reference to Figures 2 to 5. The arrows UP, FR and RH shown in the drawings indicate the upper side, front side and right side of the hammer drill 10. In the following description, when the up-down, front-rear and left-right directions are used, they refer to the up-down, front-rear and left-right directions of the hammer drill 10 unless otherwise specified. As described above, the hammer drill 10 has the hammer drill body 11 and the dust collecting device 40, and the dust collecting device 40 is assembled to the hammer drill body 11.

[0024] (About the hammer drill body 11) The hammer drill body 11 is configured as an electric tool for performing processes such as drilling holes in a workpiece. As shown in Figures 2 and 3, the hammer drill body 11 includes a housing 12, a main body motor 20, a drive mechanism 30 driven by the driving force of the main body motor 20, and a battery pack 34. Each component of the hammer drill body 11 will be described below.

[0025] (About Housing 12) The housing 12 is formed in a hollow, generally inverted L-shape in side view from the left side. Specifically, the housing 12 includes a main body housing 13 extending in the front-rear direction, and a handle housing 14 extending downward from the rear end of the main body housing 13.

[0026] A main body side intake port 13A (see FIG. 3) is formed through the lower wall of the main body housing 13 in the middle in the front-rear direction, and the main body side intake port 13A is formed in a substantially rectangular shape extending in the left-right direction. In addition, a plurality of (eight in this embodiment) main body side exhaust ports 13B (see FIG. 3) are formed through the right wall of the main body housing 13 in the middle in the front-rear direction (for convenience, only the main body side exhaust port 13B arranged in the uppermost stage is marked with a reference number in FIG. 3). The main body side exhaust port 13B is formed in a long hole shape with the vertical direction as the longitudinal direction. Four main body side exhaust ports 13B are arranged vertically, and two sets of main body side exhaust ports 13B are arranged vertically in one set. Furthermore, the main body side exhaust port 13B is arranged slightly rearward of the main body side intake port 13A.

[0027] Locking recesses 13C (see FIG. 2) for locking an adapter 41 (described later) are formed on the rear side of the main body side intake port 13A at the lower end portions of the left and right side walls of the main body housing 13. The locking recesses 13C extend in the front-rear direction and are formed in a recessed shape that is open outward in the left-right direction.

[0028] An upper portion of the handle housing 14 is configured as a handle portion 14A to be gripped by an operator. A trigger 15 is provided at the upper end portion of the handle portion 14A. The trigger 15 protrudes forward from the handle portion 14A and is configured to be operable by pulling it rearward. A switch mechanism 16 is provided on the handle portion 14A behind the trigger 15. The switch mechanism 16 has a switch (not shown) that is operated by the trigger 15. The switch is electrically connected to a control portion (not shown) of the hammer drill body 11 and outputs an output signal to the control portion according to the operating state of the trigger 15.

[0029] The lower end of the handle housing 14 is configured as a battery mounting section 14B for mounting a battery pack 34, which will be described later. The battery mounting section 14B protrudes forward from the lower end of the handle housing 14 and is bent downward. In addition, a battery terminal 17 to be connected to the battery pack 34 is provided in the battery mounting section 14B.

[0030] (Regarding the main body motor 20) As shown in Fig. 3, the main body motor 20 is configured as a three-phase brushless motor, is housed in the rear of the main body housing 13, and is electrically connected to the control unit. The main body motor 20 has a drive shaft 21 whose axial direction is the front-to-rear direction. A front end portion of the drive shaft 21 is rotatably supported by a front bearing 18 fixed to the main body housing 13, and a rear end portion of the drive shaft 21 is rotatably supported by a rear bearing 19 fixed to the main body housing 13. A pinion gear 21A is formed on the front end of the drive shaft 21.

[0031] A main body fan 23 as a main body blower is provided at the front end of the drive shaft 21 so as to be integrally rotatable. The main body fan 23 is generally formed in a disk shape with the thickness direction being in the front-rear direction, and is configured as a centrifugal fan. The main body fan 23 is disposed on the rear side of the main body intake port 13A of the main body housing 13, and the main body exhaust port 13B of the main body housing 13 is disposed radially outside the main body fan 23. When the main body fan 23 rotates together with the drive shaft 21, air on the front side of the main body fan 23 flows into the main body fan 23 from the center of the front part of the main body fan 23, and the flowed-in air flows radially outside the main body fan 23. As a result, in the second working mode, an air flow AR1 (see FIG. 3) is generated that flows from the main body intake port 13A into the main body housing 13, and the air flow AR1 flows radially outside the main body fan 23 and is exhausted from the main body exhaust port 13B.

[0032] (Regarding the driving mechanism 30) The drive mechanism 30 is configured as a mechanism that transmits the rotational force of the main body motor 20 to the tool tip T to drive the tool tip T. The drive mechanism 30 is accommodated in the front end portion of the main body housing 13. More specifically, the drive mechanism 30 is disposed forward of the main body intake port 13A. The drive mechanism 30 includes an intermediate shaft 31 and a transmission unit 32.

[0033] The intermediate shaft 31 is formed in a generally cylindrical shape with its axial direction extending in the front-rear direction, and is rotatably supported by a bearing (not shown) fixed to the main body housing 13. A gear (not shown) is provided at the rear end of the intermediate shaft 31 so as to be integrally rotatable therewith, and the gear is meshed with a pinion gear 21A of the drive shaft 21. As a result, when the main body motor 20 is driven and the drive shaft 21 rotates, the intermediate shaft 31 rotates about its own axis. The intermediate shaft 31 is provided with a motion conversion member (not shown), which is configured to convert the rotational motion of the intermediate shaft 31 into a reciprocating motion in the front-rear direction and transmit it to a transmission unit 32 described later.

[0034] The transmission unit 32 extends in the front-rear direction above the intermediate shaft 31. The tool tip T is attached to the front end of the transmission unit 32. The tool tip T is formed in a substantially cylindrical shape with the front-rear direction as its axial direction, and the rear end of the tool tip T is attached to the transmission unit 32. The transmission unit 32 is also connected to the intermediate shaft 31. As a result, the rotational force of the main body motor 20 is transmitted to the tool tip T, and the tool tip T rotates about its own axis to perform drilling on the workpiece.

[0035] (Regarding battery pack 34) 2 and 3, the battery pack 34 is formed into a substantially rectangular parallelepiped. The battery pack 34 is attached to the battery attachment portion 14B of the handle housing 14 from the rear side. The battery pack 34 has a connector (not shown), which is connected to the battery terminal 17, and power is supplied from the battery pack 34 to the main body motor 20. The battery pack 34 also has a pair of locking members 34A, which are provided on the left and right sides of the battery pack 34. The locking members 34A engage with the handle housing 14, restricting the movement of the battery pack 34 toward the rear side.

[0036] (Regarding the dust collecting device 40) 1, the dust collecting device 40 includes a dust collecting device main body 45 and an adapter 41 for attaching the dust collecting device main body 45 to the hammer drill body 11. The dust collecting device main body 45 is configured so that a connection hose 95 of a dust collector 90, which will be described later, can be attached thereto.

[0037] (About Adapter 41) 2 to 4, the adapter 41 is detachably attached to the main body housing 13 of the hammer drill main body 11 and configured as a connecting member for connecting a dust collection device main body 45 described below to the hammer drill main body 11. The adapter 41 includes an adapter main body 42 and a pair of left and right adapter locking members 43 (see FIG. 2).

[0038] The adapter body 42 is formed in a substantially rectangular plate shape with the thickness direction being the vertical direction and the longitudinal direction being the front-rear direction. A mounting recess 42A (see FIG. 4) for mounting the dust collector body 45 described later is formed on the lower surface of the adapter body 42, and the mounting recess 42A is formed in a concave shape that is open to the lower side and the front side. A main body outlet part 42B (see FIG. 3) is formed in the middle part in the front-rear direction of the adapter body 42 as a first discharge part. The main body outlet part 42B is formed in a substantially rectangular tube shape with the vertical direction as the axial direction and extending in the left-right direction. The main body outlet part 42B penetrates in the vertical direction, and the inside of the main body outlet part 42B and the inside of the mounting recess 42A are communicated. The upper end part of the main body outlet part 42B protrudes upward from the adapter body 42 and is fitted into the main body side air intake port 13A of the hammer drill body 11, and the main body outlet part 42B and the main body side air intake port 13A are connected.

[0039] The adapter locking member 43 is generally formed in a substantially T-shaped plate shape with the plate thickness direction being the left-right direction. The lower end of the adapter locking member 43 is disposed on both left-right sides of the rear end of the adapter body 42, and is rotatably connected to the adapter body 42 with the front-rear direction being the axial direction. An unillustrated locking hook is provided on the upper end of the adapter locking member 43, and the locking hook is inserted into the locking recess 13C of the main body housing 13 to lock the adapter locking member 43 to the main body housing 13. In this way, the adapter 41 is attached to the hammer drill body 11. The adapter locking member 43 is biased by a biasing spring (not shown), and the adapter 41 is maintained attached to the hammer drill body 11.

[0040] (Regarding the dust collector body 45) 2 to 5, the dust collection device main body 45 extends in the front-rear direction as a whole, and is disposed adjacent to the lower side of the main housing 13. The dust collection device main body 45 includes an attachment portion 46, a dust collection housing 50, an air inlet portion 52, and a dust collection portion 56.

[0041] (Regarding the mounting portion 46) 3 and 4, the mounting portion 46 constitutes the rear end of the upper part of the dust collecting device main body 45. The upper end of the mounting portion 46 is attached from the front side into the mounting recess 42A of the adapter main body 42, and the dust collecting device main body 45 is connected to the adapter 41. A locking member 48 (see FIG. 3) is provided on the rear side of the mounting portion 46 so as to be slidable in the left-right direction. By sliding the locking member 48, the locking member 48 and the adapter 41 engage with each other in the front-rear direction, preventing the dust collecting device main body 45 from being removed from the adapter 41.

[0042] 3, a communication portion 46A is formed penetrating the mounting portion 46 in the vertical direction for communicating between a filter chamber 71 (described later) and the main body outlet portion 42B. The communication portion 46A is formed in a substantially rectangular shape when viewed from the vertical direction, and the area of ​​the communication portion 46A is set to decrease toward the upper side. The shape of the upper opening of the communication portion 46A substantially matches the shape of the inside of the main body outlet portion 42B, and the communication portion 46A is disposed adjacent to the lower side of the main body outlet portion 42B.

[0043] Further, an inlet portion 47 is integrally formed in front of the communication portion 46A of the mounting portion 46. The inlet portion 47 is formed in a substantially cylindrical shape with the axial direction being the front-rear direction. An inlet outlet portion 47A is formed at the rear end of the inlet portion 47, protruding downward. The inlet outlet portion 47A is formed in a substantially rectangular cylindrical shape, and the interior of the inlet portion 47 and the interior of the inlet outlet portion 47A are in communication with each other.

[0044] (Regarding the dust collection housing 50) As shown in Figs. 2 to 4, the dust-collection housing 50 constitutes the outer shell of the upper part of the dust-collection device main body 45. The dust-collection housing 50 is formed in a substantially box-like shape that is open downward. The dust-collection housing 50 is composed of a housing member divided into two parts in the left-right direction, and the divided housing members are assembled to form the dust-collection housing 50. Specifically, the housing member is fastened and fixed to the mounting part 46 so as to cover the mounting part 46. The lock member 48 described above is supported slidably on the dust-collection housing 50. A step portion 50C (see Figs. 2 and 4) that is one step lower is formed at the upper rear end of the dust-collection housing 50, and the adapter 41 is disposed within the step portion 50C.

[0045] A cylindrical support tube portion 50A with its axial direction extending in the front-rear direction is formed at the front of the dust-collection housing 50. The inlet portion 47 is accommodated inside the support tube portion 50A, and the front end of the support tube portion 50A is disposed forward of the main body housing 13 of the hammer drill main body 11. A connecting portion 50B (see FIG. 3) for connecting the divided housing members is formed at the lower end of the support tube portion 50A, and the connecting portion 50B is formed in a substantially cylindrical shape with its axial direction extending in the left-right direction.

[0046] (Regarding the air inlet section 52) 2 and 3, the air inlet section 52 constitutes an upper part on the front side of the dust collection device main body 45. The air inlet section 52 is configured as a mechanical section that takes in air around the front end of the tool bit T and discharges the air to the dust collection section 56 described later. The air inlet section 52 is configured to include a slide arm 53, a suction section 54, and an intake pipe 55.

[0047] The slide arm 53 is formed in a cylindrical shape with its axial direction extending in the front-rear direction. The slide arm 53 is connected to the support cylinder portion 50A of the dust-collection housing 50 so as to be slidable in the front-rear direction, and a front end portion of the slide arm 53 protrudes forward beyond the support cylinder portion 50A.

[0048] The suction part 54 is formed in a cylindrical shape with the vertical direction as the axial direction. A connecting tube part 54A bent rearward is integrally formed at the lower end of the suction part 54. The connecting tube part 54A is disposed within the front end part of the slide arm 53 and is connected to the slide arm 53.

[0049] The upper opening of the suction section 54 is configured as a suction port 54B. A tool insertion section 54C is formed at the upper end of the suction section 54. The tool insertion section 54C is formed in a substantially cylindrical shape with the axial direction being the front-rear direction, and the suction port 54B opens radially inward of the tool insertion section 54C. When the dust collector body 45 is attached to the hammer drill body 11, the tip of the tool tip T is inserted into the tool insertion section 54C. This allows the air around the tool tip T to flow into the suction section 54 via the suction port 54B.

[0050] The intake pipe 55 is formed in a substantially cylindrical shape with the axial direction being the front-rear direction. The intake pipe 55 is formed of elastic rubber material or the like, and is configured to be expandable and contractible in the front-rear direction. The intake pipe 55 is disposed inside the slide arm 53, and the front end of the intake pipe 55 is connected to the connecting tube portion 54A of the suction portion 54, and the rear end of the intake pipe 55 is connected to the front end of the inlet portion 47. Therefore, the air sucked into the suction portion 54 from the suction port 54B flows rearward through the intake pipe 55 and flows out downward from the inlet outlet portion 47A of the inlet portion 47.

[0051] (Regarding dust collecting section 56) 2 to 6, the dust collection unit 56 is formed in a substantially rectangular box shape, and is detachably attached to the dust collection housing 50 below the inlet portion 47. That is, the dust collection unit 56 is disposed rearward of the suction unit 54. In other words, the air inlet portion 52 protrudes forward beyond the dust collection unit 56.

[0052] The dust collecting section 56 has a cyclone section 60 constituting the front part of the dust collecting section 56, and a filter section 70 constituting the rear end part of the dust collecting section 56. The dust collecting section 56 also has a first case 56A constituting the outer shell of the cyclone section 60, and a second case 56B constituting the outer shell of the filter section 70, and the first case 56A and the second case 56B are assembled to each other. The first case 56A is formed in a cylindrical shape penetrated in the front-rear direction, and the second case 56B is formed in a substantially box shape opened to the upper side. The rear opening of the first case 56A is closed by the second case 56B. As a result, the front wall of the second case 56B is formed as a partition wall 56C that partitions the cyclone section 60 and the filter section 70.

[0053] A dust collection lid 57 is provided at the front end of the first case 56A so as to be openable and closable, and the dust collection lid 57 is formed in a substantially rectangular plate shape with the front-rear direction as the plate thickness direction. The lower end of the dust collection lid 57 is rotatably connected to the front lower end of the first case 56A with the left-right direction as the axial direction, and the upper end of the dust collection lid 57 is engaged with the first case 56A. As a result, the front opening of the first case 56A is closed by the dust collection lid 57. Also, an engagement groove 57A (see FIG. 3) that is open to the front side is formed at the upper end of the dust collection lid 57. Then, in the state where the dust collection part 56 is attached to the dust collection housing 50, the connecting part 50B of the dust collection housing 50 is disposed in the engagement groove 57A, and the front end of the dust collection part 56 is engaged with the connecting part 50B. As a result, in the state where the dust collection part 56 is attached to the dust collection housing 50, the closed state of the dust collection lid 57 is maintained.

[0054] Further, the dust collector lid 57 is formed with a dust collector outlet portion 58 as a second discharge portion. That is, the dust collector outlet portion 58 is disposed forward of the filter portion 70 described later. The dust collector outlet portion 58 is formed in a cylindrical shape, and an axial middle portion of the dust collector outlet portion 58 is bent at a substantially right angle. Specifically, the dust collector outlet portion 58 extends forward from the dust collector lid 57, and an axial middle portion of the dust collector outlet portion 58 is bent downward.

[0055] A discharge lid 59 is provided as a lid at the tip of the dust collector outlet portion 58. The discharge lid 59 is formed in a generally bottomed cylindrical shape that is open upward. The discharge lid 59 is configured to be detachable from the tip of the dust collector outlet portion 58, and in the second working mode of the hammer drill system S1, the discharge lid 59 is attached to the tip of the dust collector outlet portion 58. On the other hand, in the first working mode of the hammer drill system S1, the discharge lid 59 is removed from the tip of the dust collector outlet portion 58.

[0056] An upwardly extending hook arm 59A is formed at the opening of the discharge lid 59, and the hook arm 59A is configured to be elastically deformable. A frame-shaped locking portion 59B is formed at the tip of the hook arm 59A, and the locking portion 59B is locked to a hook portion 58A formed on the outer periphery of the dust collector outlet portion 58. This prevents the discharge lid 59 from being lost when the discharge lid 59 is removed from the dust collector outlet portion 58.

[0057] (About cyclone section 60) The outer wall of the cyclone section 60 is formed by the above-mentioned first case 56A. The cyclone section 60 has a pair of left and right cyclone outer cylinders 61, a pair of left and right cyclone inlet sections 64, and a pair of left and right exhaust inner cylinders 65.

[0058] (About the cyclone outer cylinder 61) The pair of cyclone outer cylinders 61 are disposed inside the first case 56A, and are disposed at positions symmetrical with respect to the left-right center of the dust collecting device main body 45. The cyclone outer cylinder 61 is formed in a generally cylindrical shape with the axial direction extending in the front-rear direction, and the central axis of the cyclone outer cylinder 61 is a cyclone axis 61C. The cyclone outer cylinder 61 is also configured to include a rear outer cylinder 62 that constitutes the rear part of the cyclone outer cylinder 61, and a front outer cylinder 63 that constitutes the front part of the cyclone outer cylinder 61.

[0059] The rear outer cylinder 62 is formed in a cylindrical shape centered on the cyclone shaft 61C and protrudes forward from the partition wall 56C. In other words, the rear outer cylinder 62 is formed in a bottomed cylindrical shape that is open to the front, and the rear end (one axial end) of the rear outer cylinder 62 is closed by the partition wall 56C. The inner diameter of the rear outer cylinder 62 is set constant in the front-rear direction. That is, the inner peripheral surface of the rear outer cylinder 62 is disposed parallel to the cyclone shaft 61C.

[0060] The front outer cylinder 63 is formed in a substantially cylindrical shape centered on the cyclone shaft 61C, and the side walls of the front outer cylinder 63 are inclined in a direction approaching the cyclone shaft 61C as they move forward. The front outer cylinder 63 is formed integrally with the first case 56A, and a part of the front outer cylinder 63 constitutes a part of the left and right side walls of the first case 56A. The inner diameter of the rear end of the front outer cylinder 63 is set to be larger than the inner diameter of the rear outer cylinder 62, and the front end of the rear outer cylinder 62 is disposed inside the rear end of the front outer cylinder 63. That is, in the front-rear direction, the front end of the rear outer cylinder 62 and the rear end of the front outer cylinder 63 overlap, and the cyclone outer cylinder 61 has an opening 61A between the front end of the rear outer cylinder 62 and the rear end of the front outer cylinder 63. The opening 61A is open to the rear side over the entire circumferential direction of the front outer cylinder 63 and the rear outer cylinder 62. Furthermore, the rear ends of the pair of left and right front outer cylinders 63 are connected to each other at a position on the left-right center side of the dust collector body 45. The inside of the cyclone outer cylinder 61 is configured as a swirl chamber 61B, and the part inside the first case 56A other than the swirl chamber 61B is configured as a dust collection chamber 60A. As a result, the dust collector outlet part 58 is connected to the dust collection chamber 60A, and the inside of the dust collector outlet part 58 and the inside of the dust collection chamber 60A are in communication with each other.

[0061] (Regarding the cyclone inlet 64) As shown in Fig. 3 and Fig. 4, the cyclone inlet portion 64 is provided at the rear end of the pair of left and right rear outer cylinders 62. The cyclone inlet portion 64 is formed in a substantially rectangular cylinder shape with the vertical direction as the axial direction, extends upward from the rear outer cylinder 62, and is disposed adjacent to the lower side of the inlet outlet portion 47A of the inlet portion 47. Specifically, the cyclone inlet portion 64 extends upward from a portion of the rear outer cylinder 62 on the inner side in the left-right direction (the center side in the left-right direction of the dust collector body 45), and the inside of the rear outer cylinder 62 and the inside of the cyclone inlet portion 64 are communicated with each other. That is, the cyclone inlet portion 64 is disposed at a position shifted toward the center side in the left-right direction of the dust collector body 45 with respect to the cyclone axis 61C.

[0062] Further, the inner side wall in the left-right direction of the cyclone inlet 64 is configured as a guide wall 64A, and the inner peripheral surface of the guide wall 64A is configured as a guide surface 64B. In a front view from the front side, the guide surface 64B is inclined inward in the left-right direction as it approaches the upper side, and the lower end of the guide surface 64B is connected to the inner peripheral surface of the rear outer cylinder 62. Specifically, in a front view, the guide surface 64B extends upward from the lower end of the guide surface 64B along a tangent direction of the inner peripheral surface of the rear outer cylinder 62. Note that in the pair of left and right cyclone inlet sections 64, the upper ends of the guide walls 64A are connected to each other.

[0063] The inside of the cyclone inlet 64 is configured as a cyclone inlet hole 64C, and the air flowing into the cyclone inlet hole 64C from the inlet outlet 47A flows into the rear outer cylinder 62 along the guide surface 64B. That is, the air flowing into the rear outer cylinder 62 flows forward while swirling along the inner circumferential surface of the rear outer cylinder 62. The air flowing out from the front end of the rear outer cylinder 62 to the inside of the front outer cylinder 63 flows forward while swirling along the inner circumferential surface of the front outer cylinder 63. As a result, the air and dust are separated in the swirling chamber 61B, and the dust is discharged from the front end opening of the front outer cylinder 63. The details will be described later, but in the second working mode of the hammer drill system S1, the dust discharged from the front end opening of the front outer cylinder 63 is accumulated on the lower surface of the dust collection chamber 60A. On the other hand, in the first working mode of the hammer drill system S1, the airflow discharged from the front end opening of the front outer cylinder 63 flows out from the dust collector outlet portion 58 to a dust collector 90 described later.

[0064] (Regarding exhaust inner tube 65) As shown in Figs. 4 and 5, the exhaust inner cylinder 65 is provided inside each of the pair of rear outer cylinders 62. The exhaust inner cylinder 65 is formed in a cylindrical shape centered on the cyclone axis 61C and protrudes forward from the partition wall 56C. The exhaust inner cylinder 65 penetrates in the front-rear direction. That is, a cyclone outlet hole 66 penetrating the partition wall 56C is formed at the rear end of the exhaust inner cylinder 65, and the inside of the cyclone section 60 and the inside of the filter section 70 described later are communicated by the cyclone outlet hole 66. In the second working mode of the hammer drill system S1, the air separated from the dust flows rearward through the center of the cyclone outer cylinder 61 and flows rearward inside the exhaust inner cylinder 65 to be discharged into the filter section 70 described later.

[0065] (Regarding the filter unit 70) As shown in Figures 2, 3, and 5, the outer shell of the filter section 70 is formed by the above-mentioned second case 56B. A dust-collection locking member 68 is provided on the left side of the second case 56B, and the dust-collection locking member 68 is formed in a substantially rectangular plate shape with the plate thickness direction in the left-right direction. The lower end of the dust-collection locking member 68 is rotatably connected to the second case 56B with the front-rear direction as the axial direction. When the dust-collection section 56 is attached to the dust-collection housing 50, the upper end of the dust-collection locking member 68 engages with the inner surface of the left wall of the dust-collection housing 50.

[0066] The inside of the filter section 70 is configured as a filter chamber 71, and the exhaust inner tube 65 and the filter chamber 71 are in communication with each other via the above-mentioned cyclone outlet hole 66. A filter 72 is provided in the upper part of the filter chamber 71 at a vertical middle part. The filter 72 is formed in a sheet shape and folded in a pleat shape. Specifically, the filter 72 is folded in a pleat shape and overlaps in the front-rear direction such that the mountain folds of the filter 72 constitute the upper end of the filter 72 and the valley folds of the filter 72 constitute the lower end of the filter 72 in a side view.

[0067] Moreover, filter chamber 71 is disposed below communication portion 46A of mounting portion 46. Therefore, air flowing from cyclone portion 60 into filter chamber 71 flows upward and passes through filter 72, and the air that has passed through filter 72 flows into main body housing 13 from main body-side exhaust port 74.

[0068] As described above, in the dust collecting device 40, the air passage 80 connecting the suction section 54 and the main body outlet section 42B is constituted by the air inflow section 52, the dust collecting section 56 (cyclone section 60 and filter section 70), and the communication section 46A of the mounting section 46. Also, the upstream air passage 81, which is closer to the suction section 54 (inlet side) than the filter section 70 in the air passage 80, is constituted by the air inflow section 52 and the cyclone section 60, and the downstream air passage 82, which is closer to the main body outlet section 42B (outlet side) than the filter section 70 in the air passage 80, is constituted by the mounting section 46. Also, the mounting section 46 and the dust collecting section 56 correspond to the dust collecting case section of the present invention, and the air inflow section 52 corresponds to the intake nozzle section of the present invention. The air inlet section 52 extends further forward than the dust collector section 56, and the dust collector outlet section 58 is disposed further forward than the filter section 70 (in the direction in which the air inlet section 52 extends).

[0069] (About dust collector 90) As shown in Fig. 1 and Fig. 6, the dust collector 90 includes a dust collection housing 91 forming the outer shell of the dust collector 90, a connection hose 95 as a dust collector side connection part, and a dust collector side motor 96 provided in the dust collection housing 91. An air passage 92 is formed in the lower part of the dust collection housing 91. The air passage 92 includes an air passage inlet part 92A forming an inlet part of the air passage 92, an air passage intermediate part 92B forming an intermediate part of the air passage 92, and an air passage outlet part 92C forming an outlet part of the air passage 92. The inside of the air passage inlet part 92A is configured as a dust collection chamber 93. A filter 94 is provided between the air passage inlet part 92A and the air passage intermediate part 92B.

[0070] The connection hose 95 is formed in a cylindrical shape. One end of the connection hose 95 is attached to the dust collection housing 91, and the dust collection chamber 93 and the connection hose 95 communicate with each other. The other end of the connection hose 95 is configured as a hose connection part 95A, and the hose connection part 95A is configured to be connectable to the tip part of the dust collector outlet part 58 of the dust collection device 40. Specifically, the dust collector 90 and the dust collection device 40 are connected by inserting the hose connection part 95A onto the tip part of the dust collector outlet part 58.

[0071] The dust collector-side motor 96 is housed in the dust collection housing 91 with the vertical direction as the axial direction. The dust collector-side motor 96 has a drive shaft 96A with the vertical direction as the axial direction, and a dust collector-side fan 97 is provided at the lower end of the drive shaft 96A so as to be able to rotate integrally with the dust collector-side motor 96. The dust collector-side fan 97 is disposed in the air passage intermediate portion 92B and configured as a centrifugal fan. When the dust collector-side motor 96 is driven and the dust collector-side fan 97 rotates, an air flow AR2 is generated that flows from the air passage inlet portion 92A to the air passage outlet portion 92C in the air passage 92. As a result, dust in the dust collection chamber 60A of the cyclone portion 60 in the dust collection device 40 is sucked into the dust collector 90 from the dust collector outlet portion 58 via the connection hose 95 and is accumulated in the dust collection chamber 93 of the dust collector 90.

[0072] The dust collector 90 is provided with a battery 98, and power is supplied from the battery 98 to the dust collector-side motor 96. The dust collector 90 is also provided with an operating unit (not shown), and when an operator operates the operating unit, the dust collector-side motor 96 is driven to operate the dust collector 90. Furthermore, the drive torque of the dust collector-side motor 96 is significantly higher than the drive torque of the main body-side motor 20 of the hammer drill main body 11. As a result, the flow velocity of the airflow AR2 generated by the rotation of the dust collector-side fan 97 of the dust collector 90 is higher than the flow velocity of the airflow AR1 generated by the rotation of the main body-side fan 23 of the hammer drill main body 11. That is, the suction force of the dust collector 90 on the dust collector 40 is higher than the suction force of the hammer drill main body 11 on the dust collector 40.

[0073] (Action and effect) Next, the operation of the hammer drill system S1 in the first and second working modes will be described, while the action and effect of the present embodiment will be described. Hereinafter, the operation of the hammer drill system S1 in the second working mode will be described first, and then the operation of the hammer drill system S1 in the first working mode will be described.

[0074] (Operation of the hammer drill system S1 in the second working mode) In the second working mode of the hammer drill system S1, the dust collector 90 is not connected to the dust collector 40. Therefore, in the dust collector 40, the outlet 58 for the dust collector is closed by the discharge lid 59. Then, when the operator pulls the trigger 15 of the hammer drill body 11, the body-side motor 20 is driven and the tip tool T rotates around its own axis. This allows the workpiece to be drilled. Specifically, the tip tool T is pressed against the workpiece to drill the workpiece.

[0075] Furthermore, when the body-side motor 20 is driven, the body-side fan 23 rotates together with the drive shaft 21 of the body-side motor 20. As a result, the body-side fan 23 generates an airflow AR1 (see FIG. 3) from the dust collector 40 toward the hammer drill body 11. Specifically, an airflow AR1 is generated at the suction port 54B of the dust collector body 45, drawing air radially inside the tool insertion portion 54C into the suction portion 54.

[0076] As a result, the air around the tip of the tool tip T is sucked into the inside of the dust collector body 45 by the suction port 54B. That is, the dust around the tool tip T, including the dust generated during drilling, flows into the inside of the suction part 54 from the suction port 54B together with the air. When drilling a workpiece, the hammer drill body 11 approaches the workpiece as the drilling progresses, and the tool insertion part 54C of the dust collector body 45 abuts against the workpiece. Therefore, when drilling a hole in the hammer drill body 11, the suction part 54 is pressed backward by the workpiece. As a result, the intake pipe 55 of the air inlet part 52 contracts, and the slide arm 53 and the suction part 54 are displaced backward.

[0077] The airflow AR1 flowing into the suction section 54 flows rearward through the intake pipe 55, passes through the inlet section 47, and flows into the rear outer cylinder 62 of the cyclone outer cylinder 61 from the cyclone inlet section 64. The airflow AR1 flowing into the rear outer cylinder 62 flows forward while rotating around the axis of the cyclone shaft 61C along the inner circumferential surface of the rear outer cylinder 62, and is discharged from the front end of the rear outer cylinder 62 into the inside of the front outer cylinder 63 (see the airflow AR1 in Figs. 4 and 5). The airflow AR1 discharged into the inside of the front outer cylinder 63 flows forward while rotating around the axis of the cyclone shaft 61C along the inner circumferential surface of the front outer cylinder 63 (see the airflow AR1 in Fig. 5). As a result, air and dust are separated in the swirl chamber 61B, and the separated dust falls from the front end opening of the front outer cylinder 63 onto the lower surface of the dust collection chamber 60A. The separated air flow AR1 flows rearward through the approximate center of the cyclone outer cylinder 61 and is then introduced into the exhaust inner cylinder 65 (see the air flow AR1 in FIG. 5). Then, the air flow AR1 that has flowed into the exhaust inner cylinder 65 flows from the cyclone outlet hole 66 into the filter chamber 71 of the filter section 70.

[0078] The air flow AR1 flowing into the filter chamber 71 flows toward the main body outlet 74 of the dust collecting device main body 45. That is, in the filter chamber 71, the air flow AR1 flows upward, passes through the filter 72, and flows into the communication part 46A (see the air flow AR1 in FIG. 3). As a result, dust remaining in the air flow AR1 is removed by the filter 72, and the air flow AR1 from which the dust has been removed flows into the main body housing 13 of the hammer drill main body 11 from the main body outlet part 42B.

[0079] The airflow AR1 flowing into the main body housing 13 flows radially outward of the main body fan 23 and is discharged from the main body exhaust port 13B. As described above, the dust collector 40 can suck in the air around the tool tip T, separate dust contained in the air, and collect the separated dust.

[0080] (Operation of the hammer drill system S1 in the first working mode) In the first working mode of the hammer drill system S1, the dust collector 90 is connected to the dust collector 40. That is, the connection hose 95 of the dust collector 90 is inserted around the tip of the dust collector outlet 58 of the dust collector 40 instead of the discharge lid 59. As described above, the operator pulls the trigger 15 of the hammer drill body 11 to rotate the tool tip T about its own axis, thereby drilling a hole in the workpiece. At this time, the operator operates the dust collector 90 to generate an air flow AR2 (see the air flow AR2 in FIG. 3) that flows from the dust collector outlet 58 to the dust collector 90.

[0081] As a result, the air around the tip of the tool tip T is sucked into the dust collector body 45 by the suction port 54B in the same manner as described above. The air flow AR2 flowing into the suction section 54 flows into the cyclone section 60 and flows out from the front end opening of the front outer cylinder 63 in the cyclone section 60 (see the air flow AR2 shown in Figs. 4 and 5). The air flow AR2 flowing out from the front end opening of the front outer cylinder 63 flows into the dust collector outlet section 58 and flows out from the dust collector outlet section 58 into the dust collection chamber 93 of the dust collector 90 via the connection hose 95 (see the air flow AR2 shown in Fig. 2).

[0082] The air flow AR2 discharged into the dust collection chamber 93 passes through the filter 94 of the dust collector 90 and flows toward the airflow passage outlet portion 92C of the dust collector 90. As a result, dust in the air flow AR2 is removed by the filter 94, and the air flow AR2 from which the dust has been removed is discharged to the outside of the dust collector 90 from the airflow passage outlet portion 92C of the dust collector 90. As a result, the dust collector 90 can suck in the air around the tool tip T and accumulate the dust contained in the air in the dust collection chamber 93.

[0083] By pulling the trigger 15 of the hammer drill body 11, the body-side fan 23 of the hammer drill body 11 rotates. As a result, the rotation of the body-side fan 23 generates an airflow AR1 flowing from the dust collector 40 toward the dust collector 90. Here, the flow velocity of the airflow AR2 generated by the dust collector 90 is faster than the flow velocity of the airflow AR1 generated by the hammer drill body 11. Therefore, the suction force (suction force) by the dust collector 90 is higher than the suction force (suction force) by the hammer drill body 11. As a result, in the first working mode, the airflow AR1 flowing from the dust collector 40 toward the hammer drill body 11 is not generated, and an airflow AR2 (see the airflow AR2 shown in FIG. 2) flowing from the hammer drill body 11 toward the dust collector 40 is generated. That is, in the first working mode of the hammer drill system S1, the airflow AR2 creates a negative pressure in the space around the body-side fan 23 in the hammer drill body 11. This makes it possible to reduce air resistance when the main body fan 23 rotates, and therefore the power consumption of the hammer drill main body 11 when the main body motor 20 is driven can be reduced.

[0084] As described above, in the hammer drill 10, the dust collector 40 is detachably attached to the hammer drill body 11, and the body outlet portion 42B of the dust collector 40 is connected to the body-side air intake port 13A of the hammer drill body 11. When the hammer drill 10 is used alone, air containing dust can be sucked into the dust collector 40, and the dust can be stored in the dust collector 40. Here, the dust collector 40 has a dust collector outlet portion 58, which is configured to be connectable to a connection hose 95 of the dust collector 90. For this reason, the hammer drill system S1 is configured to be switchable between a first working mode in which machining work is performed with the dust collector 90 connected to the dust collector 40 of the hammer drill 10, and a second working mode in which machining work is performed by the hammer drill 10 alone. That is, the operator can select the form of the hammer drill system S1 according to the work content. For example, when a relatively large amount of dust is generated during machining, by setting the hammer drill system S1 to the first working mode, the air containing dust can be caused to flow through the dust collecting device 40 toward the dust collector 90, and the dust can be collected in the dust collector 90. As a result, it is possible to prevent dust from accumulating in the dust collecting device 40. That is, in the first working mode of the hammer drill system S1, it is possible to prevent frequent disposal of the dust accumulated in the dust collecting device 40. As a result, it is possible to improve the operability for the worker.

[0085] In addition, in the dust collector 40, the air passage 80 includes an upstream air passage 81 that constitutes a portion on the inlet side of the filter unit 70, and a downstream air passage 82 that constitutes a portion on the outlet side of the filter unit 70, and the dust collector outlet unit 58 is connected to the upstream air passage 81. As a result, in the first working mode of the hammer drill system S1, the air flow AR2 that flows in from the suction unit 54 of the dust collector 40 can be made to flow out to the dust collector 90 side on the upstream side of the filter unit 70. That is, the air flow AR2 that flows in from the suction unit 54 can be made to flow out to the dust collector 90 side without passing through the filter unit 70. Therefore, it is possible to suppress dust from adhering to the filter 72 of the filter unit 70 during work in the first working mode. Therefore, it is possible to suppress clogging of the filter 72 and reduce the frequency of replacing the filter 72. Therefore, it is possible to further improve the workability for the worker.

[0086] Further, a dust collection chamber 60A for collecting dust is provided in the upstream air passage 81 of the dust collection device 40, and the dust collector outlet part 58 is connected to the dust collection chamber 60A. Therefore, during machining in the first operation mode of the hammer drill system S1, dust that does not flow out from the dust collector outlet part 58 to the dust collector 90 side can be collected in the dust collection chamber 60A of the dust collection device 40.

[0087] Moreover, in the dust collecting section 56 of the dust collecting device 40, the dust collecting chamber 60A and the filter chamber 71 are separated by the partition wall 56C. As a result, during machining in the first working mode of the hammer drill system S1, the partition wall 56C can effectively prevent dust that has flowed into the dust collecting section 56 from flowing toward the filter chamber 71.

[0088] Further, a cyclone unit 60 is provided in the upstream air passage 81 of the dust collector 40. During machining in the second working mode of the hammer drill system S1, the cyclone unit 60 separates the air and dust sucked through the suction unit 54, and the separated dust is discharged into the dust collection chamber 60A, while the air separated from the dust is exhausted into the filter chamber 71. As a result, in the second working mode of the hammer drill system S1, the dust can be collected in the dust collection chamber 60A, while the air separated from the dust can be purified in the filter unit 70.

[0089] In addition, in the dust collector 40, the dust collector outlet portion 58 is disposed forward of the filter portion 70, and the suction portion 54 is disposed forward of the filter portion 70. As a result, when drilling a workpiece such as a floor during processing in the first working mode of the hammer drill system S1, dust flowing into the dust collector 40 can be smoothly discharged to the dust collector 90 side via the dust collector outlet portion 58. That is, when drilling a workpiece such as a floor, the front-rear direction of the hammer drill 10 is aligned with the vertical direction, and the tip portion of the tool tip T is brought into contact with the floor on the vertically lower side. Therefore, the dust collector outlet portion 58 is disposed vertically below the filter portion 70. As a result, dust discharged vertically downward from the cyclone portion 60 can be smoothly discharged to the dust collector 90 side via the dust collector outlet portion 58. Moreover, dust discharged vertically downward from the cyclone section 60 can be more effectively prevented from flowing toward the filter section 70 located vertically upward.

[0090] Second embodiment Hereinafter, a hammer drill system S2 as a working machine system according to the second embodiment will be described with reference to Fig. 7. The hammer drill system S2 includes the dust collector 90 used in the hammer drill system S1 of the first embodiment, and a hammer drill 100 as a working machine. The hammer drill 100 includes a hammer drill body 110 as a working machine body, and a dust collecting device 120. The hammer drill 100 will be described below. In Fig. 7, the same reference numerals are used to designate parts of the hammer drill body 110 and the dust collecting device 120 that are configured in the same manner as in the first embodiment.

[0091] In the hammer drill body 110, the body-side motor 20 is disposed in front of the battery pack 34 with the vertical direction as the axial direction. The drive mechanism 30 is disposed above the body-side motor 20 and transmits the driving force of the body-side motor 20 to the tool tip T. In the hammer drill body 110, the body-side air intake 13A of the first embodiment is omitted, and the interior of the hammer drill body 110 and the interior of the dust collection device 120 are not in communication with each other.

[0092] The dust collecting device 120 includes a housing 122 that forms the outer shell of the dust collecting device 120 , and a dust collecting motor 132 housed within the housing 122 .

[0093] The housing 122 is formed in a hollow, generally crank-like shape when viewed from the right side. An upper portion at the rear end of the housing 122 is configured as a mounting portion 122A, and the mounting portion 122A is detachably attached to the lower end of the hammer drill body 110.

[0094] A cylindrical inlet portion 124 is accommodated in the upper end portion of the housing 122. The air inlet portion 52 used in the dust collecting device 40 of the first embodiment is connected to the inlet portion 124, and the air inlet portion 52 protrudes forward from the housing 122. A space below the inlet portion 124 in the housing 122 is configured as a dust collecting chamber 126, and a space behind the dust collecting chamber 126 is configured as a filter chamber 128 serving as a filter portion. The dust collecting chamber 126 and the filter chamber 128 are partitioned by a partition wall 122B, and a communication hole 122C for communication between the dust collecting chamber 126 and the filter chamber 128 is formed through the partition wall 122B.

[0095] And, the dust collector outlet portion 130 as a second discharge portion is formed in the front wall of the dust collecting chamber 126. Specifically, the dust collector outlet portion 130 extends forward from the front wall of the dust collecting chamber 126 and is bent downward.

[0096] A filter 129 is provided in the filter chamber 128, and a dust collection motor 132 is disposed behind the filter 129. The dust collection motor 132 is disposed with its axial direction aligned in the front-rear direction, and a fan 134 serving as an air blower is provided at the front end of a drive shaft (not shown) of the dust collection motor 132 so as to be integrally rotatable therewith. The fan 134 is configured as a centrifugal fan. The dust collection motor 132 is electrically connected to a control unit of the hammer drill 100, and the dust collection motor 132 is driven by pulling the trigger 15 of the hammer drill 100. As a result, when the dust collection motor 132 is driven, air that has passed through the filter 129 to the rear flows radially outward of the fan 134 and is exhausted to the outside of the housing 122 from an exhaust port 122D serving as a first exhaust unit formed in the housing 122.

[0097] Also in the second embodiment, in the second working mode of the hammer drill system S2, by attaching the discharge lid 59 to the dust collector outlet portion 130, the air around the tool bit T can be sucked into the dust collector 120, and the dust can be stored in the dust collector 120. Specifically, the air flow AR1 generated by the fan 134 flows into the dust collector 120 from the air inlet portion 52. The air flow AR1 flowing into the dust collector 120 passes through the dust collection chamber 126 and the communication hole 122C and flows into the filter chamber 128. Then, the dust is removed by the filter 129, and the air from which the dust has been removed is exhausted to the outside of the housing 122 from the exhaust port 122D.

[0098] On the other hand, in the first working mode of the hammer drill system S2, the connection hose 95 of the dust collector 90 is connected to the dust collector outlet 130 and the dust collector 120 is operated, so that the air around the tool tip T can be sucked into the dust collector 120 and can be discharged from the dust collector 120 to the dust collector 90 side. As described above, even in the second embodiment, the operator can select the working mode of the hammer drill system S2 according to the work content. Therefore, even in the dust collector 120 having the dust collection motor 132 and the fan 134, the operability for the operator can be improved.

[0099] In the hammer drill system S1 of the first embodiment, one dust collector outlet part 58 is provided in the dust collecting device 40, and the dust collector 90 is configured to be connectable to one dust collector outlet part 58. Alternatively, the dust collecting device may be configured to have a plurality of dust collector outlet parts so that the dust collector 90 can be connected to the plurality of dust collector outlet parts. This point will be described below as a modified example of the hammer drill system S1 with reference to FIG. 8.

[0100] As shown in this figure, in the modified example of the hammer drill system S1, a dust collecting device 200 is attached to the hammer drill body 11 instead of the dust collecting device 40. In the dust collecting device 200, a dust collecting section 210 is configured to include a first dust collecting section 212, a second dust collecting section 214, and a third dust collecting section 216. The second dust collecting section 214 is configured similarly to the cyclone section 60 of the dust collecting device 40 of the first embodiment, and the third dust collecting section 216 is configured similarly to the filter section 70 of the first embodiment. That is, in the dust collecting device 200, a first dust collecting section 212 is added to the upstream side (inlet side) of the cyclone section 60 of the dust collecting device 40 of the first embodiment.

[0101] The interior of the first dust collecting section 212 is configured as a first dust collecting chamber 212A. A space inside the second dust collecting section 214 corresponding to the dust collecting chamber 60A of the first embodiment is configured as a second dust collecting chamber 214A. A space inside the third dust collecting section 216 corresponding to the filter chamber 71 of the first embodiment is configured as a third dust collecting chamber 216A. A filter 72 is provided in the third dust collecting section 216.

[0102] The first dust collecting section 212 is provided with a first dust collector outlet section 220 as a second discharge section, and the first dust collector outlet section 220 is connected to the first dust collecting chamber 212A. The second dust collecting section 214 is provided with a second dust collector outlet section 222 as a second discharge section, and the second dust collector outlet section 222 is connected to the second dust collecting chamber 214A. The third dust collecting section 216 is provided with a third dust collector outlet section 224 as a second discharge section, and the third dust collector outlet section 224 is connected to the third dust collecting chamber 216A.

[0103] Further, the other end portion of the connection hose 95 of the dust collector 90 is branched into three parts, and the connection hose 95 is configured to be connectable to the first to third dust collector outlet portions 220, 222, 224. In the first processing mode, the connection hose 95 is connected to the first to third dust collector outlet portions 220, 222, 224, respectively. As a result, in the first processing mode in the modified example of the hammer drill system S1, it is possible to improve the dust collection performance compared to the hammer drill system S1, and to suppress dust from remaining in a specific dust collection chamber in the dust collection device 200.

[0104] In the modified example of the hammer drill system S1, three dust collection chambers are provided in the dust collection device 200, and all of the dust collection chambers are connected to the dust collector 90, but the dust collection chambers of the dust collection device 200 connected to the dust collector 90 can be set arbitrarily. For example, the connection hose 95 of the dust collector 90 may be connected to the first dust collector outlet portion 220 and the second dust collector outlet portion 222, respectively. Also, one outlet portion communicating with all of the first to third dust collection chambers 212A, 214A, 216A (i.e., the first to third dust collector outlet portions 220, 222, 224 are connected) may be provided in the dust collection portion 210, and the other end side portion of the connection hose 95 connected thereto may not be branched and may have only a single suction port. In the modified example of the hammer drill system S1, the third dust collector outlet 224 is disposed closer to the suction port 54B than the filter 72, but it may be disposed closer to the main body outlet 42B than the filter 72. [Explanation of symbols]

[0105] 10 Hammer drill (working machine) 11 Hammer drill body (working machine body) 13A Main unit air intake 20 Main body motor 23 Main unit fan (main unit blower) 42B Outlet section for main body (first discharge section) 52 Air inlet section (intake nozzle section) 54 Suction part 56C Partition wall 58 Dust collector outlet (second exhaust) 59 Discharge lid (lid part) 60 Cyclone Division 60A Dust Collection Chamber 70 Filter section 71 Filter Room 72 Filters 80 Air passage 81 Upstream air passage 82 Downstream air passage 90 Dust collector 95 Connection hose (dust collector side connection part) 96 Dust collector side motor 97 Dust collector side fan 100 Hammer drill (working machine) 110 Hammer drill body (working machine body) 120 Dust collector 122B Partition wall 122D Discharge port (1st discharge section) 126 Dust Collection Room 128 Filter chamber (filter section) 129 Filters 130 Dust collector outlet section (second exhaust section) 134 Fan (blower) 200 Dust collector 220 Outlet section for first dust collector (second exhaust section) 222 Outlet section for second dust collector (second exhaust section) 224 Outlet section for third dust collector (second exhaust section) S1 Hammer Drill System (Work Machine System) S2 Hammer Drill System (Work Machine System) T Tip tool

Claims

1. A dust collecting device that is detachably attached to a working machine body and sucks up dust generated during processing of the working machine body, a suction unit that sucks in the air containing the dust from the outside; A first exhaust section that exhausts the air sucked through the suction section to the outside; an air passage connecting the suction section and the first discharge section; A filter portion provided in the air passage; a dust collection chamber provided in the air passage closer to the suction unit than the filter unit for collecting the dust; A second discharge section connected to the dust collection chamber and configured to be connectable to a dust collector separate from the working machine body; A dust collecting device equipped with

2. The air passage is an upstream air passage constituting a portion closer to the suction unit than the filter unit; a downstream air passage constituting a portion closer to the first discharge portion than the filter portion; It is composed of 2. The dust collecting apparatus according to claim 1, wherein the dust collecting chamber is provided in the upstream air passage.

3. The filter portion has a filter chamber that houses a filter, 3. The dust collecting device according to claim 2, wherein the dust collecting chamber and the filter chamber are partitioned by a partition wall.

4. A dust collection device as described in Claim 3, wherein the second discharge section is connected to both the dust collection chamber and the filter chamber.

5. The dust collection chamber includes a first dust collection chamber and a second dust collection chamber provided between the first dust collection chamber and the filter chamber on the air passage, The dust collecting device according to claim 4 , wherein the second discharge portion is connected to all of the first dust collecting chamber, the second dust collecting chamber and the filter chamber.

6. The upstream air passage is provided with a cyclone section, The dust collecting device according to claim 5 , wherein the cyclone portion separates the air sucked through the suction portion from the dust, and discharges the separated dust into the dust collecting chamber and exhausts the separated air into the filter chamber.

7. The dust collection case section is constituted by the dust collection chamber, the filter chamber, the first discharge section, and the second discharge section, and an intake nozzle section having the suction section extends from the dust collection case section, The dust collecting device according to any one of claims 3 to 6, wherein the second discharge portion is disposed on a side of the filter portion in a direction in which the intake nozzle portion extends.

8. A dust collecting device described in any one of claims 1 to 7, comprising a lid portion that can open and close the second discharge section.

9. A dust collecting device as described in any one of claims 1 to 8, wherein the first exhaust section is connected to a main body side air intake port of the work machine main body, and the dust generated during processing of the work machine main body is sucked in by an air flow generated by a main body side air blowing section of the work machine main body.

10. A dust collecting device as described in any one of claims 1 to 8, characterized in that it is provided with a blower section provided in the air passage for generating an air flow flowing from the suction section to the first discharge section.

11. A dust collecting device according to any one of claims 1 to 10, A work machine body including a main body motor, a tool tip driven by the driving force of the main body motor, and a main body blower unit rotated by the driving force of the main body motor; A work machine equipped with the above.

12. A work machine as described in Claim 11, wherein the main body side blowing section is attached to the drive shaft of the main body side motor.

13. A work machine according to claim 11 or claim 12, a dust collector including a dust collector-side motor, a dust collector-side fan driven by a driving force of the dust collector-side motor, and a dust collector-side connection part connected to the second discharge part of the dust collecting device and sucking air inside the dust collecting device by an airflow generated by the dust collector-side fan; A work machine system equipped with the above components.

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