Dust removal device

Abstract

To suppress lowering of workability.SOLUTION: A dust removal device includes: a mounting part; a joint part which is arranged in the mounting part, and connects a first dust collection part of a dust collection machine and a second dust collection part collecting dust generated from an electric tool interlocking with mounting operation of mounting the electric tool on the mounting part; and a suction part which is arranged in the dust collection machine and starts suction operation so that the dust is transferred to the first dust collection part from the second dust collection part by using the mounting operation as a trigger.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The technology disclosed in this specification relates to a dust removal device.

Background Art

[0002] In the technical field related to dust removal devices, a dust collector that operates in conjunction with a marquetry saw, as disclosed in Patent Document 1, is known.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, the blade case of the marquetry saw and the suction port of the dust collector are connected via a hose. An operator performs a cutting operation of operating the marquetry saw to cut a workpiece. By operating the dust collector in conjunction with the cutting operation, dust (powder) generated from the workpiece by the cutting operation is sucked into the dust collector. If the marquetry saw and the dust collector are connected via a hose during the cutting operation, the hose may become an obstacle, and the workability of the cutting operation may be reduced.

[0005] The technology disclosed in this specification aims to suppress the reduction of workability.

Means for Solving the Problems

[0006] This specification discloses a dust removal device. The dust removal device may include a mounting section, a joint section disposed on the mounting section, and a suction section disposed on a dust collector. The joint section may connect a first dust collection section of the dust collector and a second dust collection section that collects dust generated from the power tool, in conjunction with a mounting operation in which the power tool is placed on the mounting section. The suction section may start a suction operation triggered by the mounting operation so as to transfer dust from the second dust collection section to the first dust collection section. [Effects of the Invention]

[0007] According to this disclosure, the decline in work efficiency is suppressed. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a front perspective view showing a power tool according to the first embodiment. [Figure 2] Figure 2 is a rear perspective view showing a power tool according to the first embodiment. [Figure 3] Figure 3 is a rear perspective view showing a dust collector according to the first embodiment. [Figure 4] Figure 4 is a schematic diagram showing the cutting operation according to the first embodiment. [Figure 5] Figure 5 is a front perspective view showing the state in which an electric tool is placed on the mounting device according to the first embodiment. [Figure 6] Figure 6 is a side view from the right showing the state in which an electric tool is placed on the mounting device according to the first embodiment. [Figure 7] Figure 7 is a side view from the right showing the power tool mounted on the mounting device according to the second embodiment. [Figure 8] Figure 8 is a front perspective view showing the state in which an electric tool is mounted on the mounting device according to the third embodiment. [Figure 9] Figure 9 is a side view from the right showing the state in which an electric tool is placed on the mounting device according to the third embodiment. [Figure 10] Figure 10 is a block diagram showing a mounting device according to the third embodiment. [Figure 11] Figure 11 is a rear perspective view showing the mounting device according to the fourth embodiment. [Figure 12] Figure 12 is a side view from the right showing the state in which an electric tool is mounted on the mounting device according to the fourth embodiment. [Figure 13] Figure 13 is a block diagram showing the mounting device according to the fourth embodiment. [Figure 14] Figure 14 is a front perspective view showing a power tool according to the fifth embodiment. [Figure 15] Figure 15 is a rear perspective view showing a power tool according to the fifth embodiment. [Figure 16] Figure 16 is a side view from the right showing the state in which an electric tool is mounted on the mounting device according to the fifth embodiment. [Figure 17] Figure 17 is a schematic diagram showing the cutting operation according to the sixth embodiment. [Modes for carrying out the invention]

[0009] In one or more embodiments, the dust removal device may include a mounting section, a joint section disposed on the mounting section, and a suction section disposed on a dust collector. The joint section may connect a first dust collection section of the dust collector with a second dust collection section that collects dust generated from the power tool, in conjunction with the mounting operation in which the power tool is placed on the mounting section. The suction section may start a suction operation triggered by the mounting operation so as to transfer dust from the second dust collection section to the first dust collection section.

[0010] In the above configuration, the dust generated from the workpiece during the cutting operation is collected by the second dust collection unit. In the cutting operation, it is not necessary to connect the power tool and the dust collector via a dust collection hose. Since the power tool and the dust collector are not connected via a dust collection hose in the cutting operation, a decrease in the workability of the cutting operation is suppressed. The second dust collection unit may be a component of the power tool or an accessory of the power tool. When interrupting or ending the cutting operation, the operator places the power tool on the placement unit. In conjunction with the placement operation in which the power tool is placed on the placement unit, the first dust collection unit and the second dust collection unit of the dust collector are connected. Triggered by the placement operation, the suction unit of the dust collector starts the suction operation. As a result, dust is transferred from the second dust collection unit to the first dust collection unit, and the dust in the second dust collection unit is collected by the first dust collection unit. The dust is removed from the second dust collection unit. The suction operation may be started when the power tool is placed on the placement unit, or may be started after a predetermined time has elapsed since the power tool was placed on the placement unit. Further, when an input unit for operating to switch between the start and stop of the suction operation is provided in the dust collector, the suction operation may be started by operating the input unit in conjunction with the placement operation. When a placement sensor for detecting that the power tool has been placed on the placement unit is provided, the suction operation may be started when the placement sensor detects that the power tool has been placed on the placement unit. When a connection sensor for detecting that the first dust collection unit and the second dust collection unit are connected is provided, the suction operation may be started when the connection sensor detects that the first dust collection unit and the second dust collection unit are connected.

[0011] In one or more embodiments, the power tool may include a second dust collection unit.

[0012] In the above configuration, the dust generated from the power tool is collected by the second dust collection unit, which is a component of the power tool.

[0013] In one or more embodiments, after the suction operation is performed while the power tool is placed on the placement unit, the suction operation may be stopped.

[0014] In the above configuration, the suction operation is stopped at a predetermined timing, which prevents the dust collector from continuing to operate unnecessarily.

[0015] In one or more embodiments, the suction operation may be stopped while the power tool is placed on the mounting unit.

[0016] In the above configuration, the suction operation is stopped at a predetermined timing while the power tool is placed on the mounting unit, thereby preventing the dust collector from continuing to operate unnecessarily. For example, the suction operation may be stopped after a certain period of time has passed since the power tool was placed on the mounting unit. The suction operation may also be stopped after all the dust from the second dust collection unit has been transferred to the first dust collection unit. The suction operation may be performed intermittently multiple times while the power tool is placed on the mounting unit.

[0017] In one or more embodiments, the suction operation may be stopped by a lifting motion in which the power tool moves away from the mounting surface.

[0018] In the above configuration, the suction operation is stopped by triggering the lifting operation, thereby preventing the dust collector from continuing to operate unnecessarily. When resuming cutting work, the operator lifts the power tool from the mounting unit. The connection between the first dust collection unit and the second dust collection unit is released in conjunction with the lifting operation that moves the power tool away from the mounting unit. The suction operation is stopped by triggering the lifting operation. The suction operation may be stopped when the power tool is removed from the mounting unit, or it may be stopped after a predetermined time has elapsed from the moment the power tool is removed from the mounting unit.

[0019] In one or more embodiments, the mounting unit may be supported by a dust collector.

[0020] In the above configuration, the worker can place the power tool on the mounting section supported by the dust collector.

[0021] In one or more embodiments, the mounting section may be detachable from the dust collector.

[0022] In the above configuration, the operator can set the mounting unit at any position. This allows the operator to smoothly place the power tool on the mounting unit. The mounting unit may be installed on a dust collector, on the floor, or on a workbench.

[0023] In one or more embodiments, the mounting operation may be performed with the mounting unit detached from the dust collector.

[0024] In the above configuration, the operator can install the mounting unit at any location separate from the dust collector. This allows the operator to smoothly place the power tool on the mounting unit. The mounting unit may be installed on the floor or a workbench.

[0025] In one or more embodiments, the dust removal device may include a lifting mechanism for raising and lowering a mounting section. The mounting section may be supported by a dust collector via the lifting mechanism.

[0026] In the above configuration, the operator can position the mounting unit at any height, for example, to match the operator's height or the height of the workbench. This allows the operator to smoothly place the power tool on the mounting unit.

[0027] In one or more embodiments, the dust collector may include a mounting section.

[0028] In the above configuration, the worker can place the power tool on the mounting section, which is a component of the dust collector.

[0029] In one or more embodiments, the dust removal device may be connected to a second dust collection unit and include a cap portion having a passage through which dust passes. The joint portion may be connected to the cap portion.

[0030] In the above configuration, the joint section and the second dust collection section are connected via the cap section.

[0031] In one or more embodiments, the cap portion may be connected to the second dust collection portion via an expandable hose.

[0032] In the above configuration, the operator can smoothly change the relative position between the cap and the second dust collection unit.

[0033] In one or more embodiments, the dust removal device may include an on-off valve for opening and closing the passage in the cap portion. The passage may be closed by the on-off valve when the power tool is not placed on the mounting portion. The passage may be opened when the power tool is placed on the mounting portion.

[0034] In the above configuration, when the power tool is not placed on the mounting section, the passage is closed by the on-off valve, so that dust from the second dust collection section does not spill out to the outside of the second dust collection section through the passage. When the power tool is placed on the mounting section, the passage is opened, so that dust is transferred from the second dust collection section to the first dust collection section. When the power tool is placed on the mounting section, the passage may be opened by the on-off valve moving due to contact with the joint section. After the power tool is placed on the mounting section, the passage may be opened by the on-off valve moving due to the suction force of the dust collector.

[0035] In one or more embodiments, the dust collector may have a suction port connected to a first dust collection section. The dust removal device may include a dust collection hose connecting the suction port to a joint. Dust transferred from the second dust collection section to the first dust collection section may pass through the dust collection hose.

[0036] In the above configuration, the first dust collection unit and the second dust collection unit are connected via a joint and a dust collection hose. The dust from the second dust collection unit is transferred to the first dust collection unit via the joint and the dust collection hose.

[0037] In one or more embodiments, the dust removal device may be located on the surface of the dust collector and include an input unit operated for switching the start and stop of the suction operation. The input unit may be operated in conjunction with the mounting operation.

[0038] In the above configuration, the input unit is operated in conjunction with the placement operation, thereby initiating the suction operation in conjunction with the placement operation.

[0039] In one or more embodiments, the dust removal device may include an operating member supported at the joint and capable of operating the input section. The operating member may be moved by at least a portion of a power tool while in contact with the input section, in conjunction with the mounting operation, to operate the input section.

[0040] In the above configuration, the input unit is operated by an operating member in conjunction with the placement operation, thereby initiating the suction operation in conjunction with the placement operation.

[0041] In one or more embodiments, the power tool may move in conjunction with the mounting operation while in contact with the input section to operate the input section.

[0042] In the above configuration, the input unit is operated by a power tool in conjunction with the placement operation, thereby initiating the suction operation in conjunction with the placement operation.

[0043] In one or more embodiments, the dust removal device may include a placement sensor that detects when a power tool is placed on the placement unit. The suction unit may start suction operation when it is determined, based on the detection data from the placement sensor, that a power tool has been placed on the placement unit.

[0044] In the above configuration, the placement sensor detects that the power tool has been placed on the mounting unit, and the suction operation is initiated in conjunction with the placement operation.

[0045] In one or more embodiments, the mounting sensor may be placed on the mounting portion.

[0046] In the above configuration, the mounting sensor can accurately detect whether or not the power tool is placed on the mounting unit.

[0047] In one or more embodiments, the first dust collection unit and the second dust collection unit may be connected in conjunction with the mounting operation. The dust removal device may include a connection sensor that detects when the first dust collection unit and the second dust collection unit are connected. The suction unit may start suction operation when it is determined, based on the detection data from the connection sensor, that the first dust collection unit and the second dust collection unit are connected.

[0048] In the above configuration, the connection sensor detects that the first dust collection unit and the second dust collection unit are connected, and the suction operation is initiated in conjunction with the placement operation.

[0049] In one or more embodiments, the upper surface of the mounting section may include an inclined surface. The power tool may have a cap portion connected to a second dust collection section and having a passage for dust to pass through. The joint portion may be positioned below the opening of the cap portion of the power tool mounted on the mounting section in the direction of inclination of the inclined surface.

[0050] In the above configuration, gravity makes it easier for the cap portion of the power tool to approach the joint portion, so that the second dust collection portion and the joint portion are smoothly connected via the cap portion.

[0051] The embodiments of this disclosure will be described below with reference to the drawings, but this disclosure is not limited to these embodiments. The components of the embodiments described below can be combined as appropriate. In addition, some components may not be used.

[0052] [First Embodiment] The first embodiment will be described.

[0053] <Power tools> Figure 1 is a front perspective view showing the power tool 1A according to this embodiment. Figure 2 is a rear perspective view showing the power tool 1A according to this embodiment. In this embodiment, the power tool 1A is a circular saw, which is a type of portable cutting machine. The operator uses the power tool 1A to perform cutting work on the material to be processed.

[0054] The power tool 1A comprises a housing 2, a base 3, a rotating blade 4, a battery mounting section 5, a trigger lever 6, and a dust box 7.

[0055] The housing 2 has a gear housing section 2A, a motor housing section 2B, and a grip section 2C. The gear housing section 2A houses multiple gears. The motor housing section 2B houses the motor 8. The grip section 2C is held by the operator. The grip section 2C is positioned above the gear housing section 2A.

[0056] The base 3 is placed on the workpiece. During the cutting operation, the lower surface of the base 3 comes into contact with the upper surface of the workpiece. The housing 2 is connected to the upper surface of the base 3 via the front support portion 9 and the rear support portion 10.

[0057] The rotating blade tool 4 is rotated by a motor 8. The motor 8 is an inner rotor type DC brushless motor. The rotational force generated by the motor 8 is transmitted to the rotating blade tool 4 via a plurality of gears housed in the gear housing 2A. At least a portion of the rotating blade tool 4 protrudes downward from the lower surface of the base 3. At least a portion of the rotating blade tool 4, including its lower part, is covered by the cover 11.

[0058] With the base 3 placed on the upper surface of the workpiece, the rotary cutting tool 4 rotates, cutting the workpiece. Dust is generated from the workpiece as the cutting operation is performed.

[0059] The front support portion 9 and the rear support portion 10 support the housing 2 so that it can move relative to the base 3. The housing 2 is movable relative to the base 3. By moving the housing 2 relative to the base 3, the amount of protrusion of the rotating cutting tool 4 from the lower surface of the base 3 is adjusted.

[0060] The battery mounting section 5 is located at the rear of the grip section 2C. The battery pack 12 is mounted in the battery mounting section 5. The battery pack 12 includes a rechargeable battery. The battery pack 12 functions as a power source for the power tool 1A. No AC power cable is connected to the power tool 1A.

[0061] The trigger lever 6 is located on the grip section 2C. When the operator operates the trigger lever 6, the motor 8 is driven.

[0062] The dust box 7 collects dust generated from the workpiece during the cutting operation. The dust box 7 is positioned around at least a portion of the rotary cutting tool 4. The dust box 7 collects dust generated between the rotary cutting tool 4 of the power tool 1A and the workpiece. The dust box 7 functions as a second dust collection unit that collects dust generated from the power tool 1A. The dust is accumulated in the dust box 7. A cap portion 13 having a passage for dust to pass through is connected to the rear of the dust box 7. An opening 14 is provided on the lower surface of the cap portion 13. An on-off valve 15 is provided in the opening 14. The opening 14 is closed by the on-off valve 15. The on-off valve 15 opens and closes the passage of the cap portion 13. During the cutting operation, the passage of the cap portion 13 is closed by the on-off valve 15.

[0063] <Dust collector> Figure 3 is a rear perspective view showing the dust collector 21 according to this embodiment. As shown in Figure 3, the dust collector 21 comprises a tank section 22, a main body section 23, and a latch 24. The main body section 23 is positioned above the tank section 22. The tank section 22 supports the main body section 23. The latch 24 secures the tank section 22 and the main body section 23. The latch 24 is provided on the left and right sides of the tank section 22, respectively. Casters 25 are provided at the bottom of the tank section 22.

[0064] The tank section 22 includes a suction pipe 26 and a tank 27. The suction pipe 26 sucks in dust. The suction pipe 26 is located at the rear of the tank 27. The suction pipe 26 has a suction port 28. The suction port 28 faces backward. The suction port 28 is connected to the internal space of the tank 27. After being sucked in through the suction port 28, the dust flows into the internal space of the tank 27. The tank 27 collects the dust sucked in through the suction port 28.

[0065] The main unit 23 includes a main unit housing 29, an operation panel 30, a switch button 31, and a handle 32.

[0066] The main housing 29 is supported by the tank section 22. The main housing 29 houses the controller 37, the motor 38, and the fan. The motor 38 generates power to rotate the fan. As the fan rotates, a suction force is generated at the intake port 28. The motor 38 and the fan function as a suction unit that performs the dust collection operation.

[0067] The control panel 30 is located at the rear of the main unit housing 29. The control panel 30 includes a main power switch 33 and a suction power adjustment switch 34.

[0068] The switch button 31 is located on the surface of the dust collector 21. The switch button 31 is located at the rear and top of the main body housing 29. The switch button 31 is rotatably supported by the main body housing 29.

[0069] When the main power switch 33 is operated, the supply of power to the dust collector 21 from the power source is switched on and off. In this embodiment, the battery mounting section is located in the internal space of the main body housing 29. The power source for the dust collector 21 is a battery pack mounted in the battery mounting section. Note that the power source for the dust collector 21 may also be an AC power source. When the suction force adjustment switch 34 is operated, the rotational speed of the motor 38 per unit time is adjusted. By adjusting the rotational speed of the motor 38 per unit time, the suction force from the suction port 28 is adjusted.

[0070] With the main power switch 33 operated so that power is supplied to the dust collector 21 from the power source of the dust collector 21, the motor 38 is switched between being driven and stopped when the switch button 31 is operated. The switch button 31 functions as an input unit operated to switch the start and stop of the suction operation of the motor 38 and the fan.

[0071] The handle 32 is rotatably supported on the upper part of the main housing 29. The handle 32 is positioned in front of the switch button 31. The operator can carry the dust collector 21 while holding the handle 32.

[0072] <Dust removal device> Figure 4 is a schematic diagram showing the cutting operation according to this embodiment. The dust removal device 100 is placed in the workspace for the cutting operation. The dust removal device 100 includes a dust collector 21 and a mounting device 40. The dust removal device 100 removes dust from the dust box 7. The mounting device 40 is supported by the dust collector 21. The mounting device 40 is placed on top of the dust collector 21. In this embodiment, the dust removal device 100 is placed on the floor of the workspace.

[0073] As shown in Figure 4, the workpiece W is placed on the workbench B. The operator holds the grip portion 2C of the power tool 1A in their right hand, for example, and pulls the trigger lever 6 with their right index finger. When the trigger lever 6 is pulled, the motor 8 is driven and the rotating cutting tool 4 rotates.

[0074] With the base 3 positioned on the upper surface of the workpiece W, the rotary cutting tool 4 rotates, cutting the workpiece W. Dust is generated from the workpiece W as a result of the cutting operation. The dust generated from the workpiece W by the cutting operation is collected in the dust box 7. In this embodiment, the power tool 1A and the dust collector 21 are not connected via a dust collection hose during the cutting operation. The operator can perform the cutting operation efficiently without being hindered by the dust collection hose. Also, in this embodiment, the power tool 1A is powered by a battery pack 12. No AC power cable is connected to the power tool 1A. The operator can perform the cutting operation efficiently without being hindered by the AC power cable.

[0075] If dust accumulates in the dust box 7 due to cutting work, the worker interrupts the cutting work and places the power tool 1A on the mounting device 40. In this embodiment, the act of placing the power tool 1A on the mounting device 40 triggers the motor 38 and fan to start suction operation so that dust is transferred from the dust box 7 to the tank 27.

[0076] Figure 5 is a front perspective view showing the power tool 1A mounted on the mounting device 40 according to this embodiment. Figure 6 is a right-side view showing the power tool 1A mounted on the mounting device 40 according to this embodiment.

[0077] As shown in Figures 4, 5, and 6, the mounting device 40 includes a mounting section 41, a leg section 42, a joint section 44, an operating member 45, and a coil spring 46.

[0078] The mounting section 41 is on which the power tool 1A is placed. The mounting section 41 is a plate-shaped member. The outer shape of the mounting section 41 is a rectangle that is long in the front-to-back direction. The operator can place the power tool 1A on the mounting section 41. When the power tool 1A is placed on the mounting section 41, the base 3 of the power tool 1A is in contact with the upper surface of the mounting section 41. Note that Figures 5 and 6 show the state immediately before the power tool 1A is placed on the mounting section 41, so the base 3 is not in contact with the upper surface of the mounting section 41. An opening 43 is provided in a part of the mounting section 41. The opening 43 is formed to penetrate the upper and lower surfaces of the mounting section 41. The opening 43 is a rectangle that is long in the front-to-back direction. When the base 3 is in contact with the upper surface of the mounting section 41, at least a part of the rotary cutting tool 4 and the cover 11 that protrude downward from the base 3 are positioned inside the opening 43. At least a portion of the cover 11 that protrudes downward from the base 3 is positioned below the lower surface of the mounting portion 41.

[0079] The legs 42 support the lower surface of the mounting section 41. The legs 42 protrude downward from the lower surface of the mounting section 41. The legs 42 are connected to the front and rear ends of the lower surface of the mounting section 41. The legs 42 are in contact with the upper surface of the dust collector 21. The upper surface of the dust collector 21 supports the lower ends of the legs 42. The mounting section 41 is supported by the dust collector 21 via the legs 42. The legs 42 separate the lower surface of the mounting section 41 from the upper surface of the dust collector 21. The legs 42 prevent contact between the lower end of the cover 11 and the upper surface of the dust collector 21.

[0080] The joint portion 44 is positioned on the mounting portion 41. The joint portion 44 connects the tank 27 of the dust collector 21 and the dust box 7 of the power tool 1A. The joint portion 44 is a pipe-shaped (nozzle-shaped) member. A joint opening is provided at the rear of the mounting portion 41. The joint opening is formed to penetrate the upper and lower surfaces of the mounting portion 41. The joint portion 44 has a joint opening. The upper part of the joint portion 44 protrudes upward from the upper surface of the mounting portion 41. The upper end of the joint portion 44 is positioned above the upper surface of the mounting portion 41. The lower end of the joint portion 44 is positioned at the same height as the lower surface of the mounting portion 41. An inlet is provided at the upper end of the joint portion 44, and an outlet is provided at the lower end of the joint portion 44. The inlet at the upper end of the joint portion 44 and the outlet at the lower end of the joint portion 44 are connected via a passage.

[0081] The operating member 45 is supported by the joint portion 44. The operating member 45 can operate the switch button 31. The operating member 45 includes a cylindrical portion 45A arranged around the joint portion 44 and a rod portion 45B fixed to the outer circumferential surface of the cylindrical portion 45A and extending downward from the cylindrical portion 45A. A rod opening is provided at the rear of the mounting portion 41. The rod opening is formed to penetrate the upper and lower surfaces of the mounting portion 41. The rod portion 45B is positioned to accommodate the rod opening. The rod portion 45B is positioned to protrude downward from the lower surface of the mounting portion 41.

[0082] The operating member 45 is movably supported on the joint portion 44 and the mounting portion 41, respectively. The cylindrical portion 45A is movable vertically while positioned around the joint portion 44. The rod portion 45B is movable vertically while being guided by the rod opening. The cylindrical portion 45A and the rod portion 45B are a single unit. The cylindrical portion 45A and the rod portion 45B move together vertically.

[0083] The lower end of the rod portion 45B contacts the switch button 31. The operating member 45 can operate the switch button 31 by moving it vertically while the lower end of the rod portion 45B and the switch button 31 are in contact.

[0084] The coil spring 46 is positioned around the joint portion 44. The upper end of the coil spring 46 is connected to the lower end of the cylindrical portion 45A. The lower end of the coil spring 46 is supported by a flange portion provided at the bottom of the joint portion 44. Alternatively, the lower end of the coil spring 46 may be supported by the upper surface of the mounting portion 41. The coil spring 46 generates an elastic force so that the operating member 45, including the cylindrical portion 45A, moves upward.

[0085] An outlet provided at the lower end of the joint portion 44 and the suction port 28 of the dust collector 21 are connected via a dust collection hose 35. The suction port 28 is connected to the tank 27. In other words, the joint portion 44 is connected to the tank 27 via the dust collection hose 35 and the suction port 28. The opening 14 of the cap portion 13 is connected to the dust box 7 via the passage of the cap portion 13. When dust accumulates in the dust box 7 due to cutting work, the worker interrupts the cutting work and places the power tool 1A on the mounting portion 41. In this embodiment, the joint portion 44 connects the tank 27 of the dust collector 21 and the dust box 7, which collects the dust generated from the power tool 1A, in conjunction with the mounting operation in which the power tool 1A is placed on the mounting portion 41. The motor 38 and fan located in the dust collector 21 start a suction operation to transfer dust from the dust box 7 to the tank 27, triggered by the placement operation of the power tool 1A on the mounting section 41.

[0086] When the power tool 1A is not placed on the mounting section 41, the passage of the cap section 13 is closed by the on-off valve 15. During the mounting operation, the upper end of the joint section 44 is inserted into the opening 14 provided at the bottom of the cap section 13. As the upper end of the joint section 44 is inserted into the opening 14, the on-off valve 15 that is closing the opening 14 comes into contact with the upper end of the joint section 44, and the on-off valve 15 is moved upward by the joint section 44. This opens the passage of the cap section 13. The joint section 44 is connected to the cap section 13. Also, during the mounting operation, a part of the cover 11 is positioned inside the opening 43 of the mounting section 41. As a part of the cover 11 is positioned inside the opening 43, the base 3 can come into contact with the upper surface of the mounting section 41.

[0087] With the upper end of the joint portion 44 inserted into the opening 14, the power tool 1A is lowered so that the base 3 contacts the upper surface of the mounting portion 41, causing the lower surface of the cap portion 13 to contact the upper surface of the cylindrical portion 45A. With the lower surface of the cap portion 13 and the upper surface of the cylindrical portion 45A in contact, the power tool 1A is lowered further, causing the operating member 45 to be lowered by the cap portion 13. The operating member 45 descends against the elastic force of the coil spring 46. As the operating member 45 descends with the lower end of the rod portion 45B in contact with the upper surface of the switch button 31, the switch button 31 is pressed. The switch button 31 is operated by the operating member 45 in conjunction with the mounting operation. As the switch button 31 is pressed in conjunction with the mounting operation, the motor 8 and fan, which are the suction portion, rotate. With the power tool 1A mounted on the mounting portion 41, the passage of the cap portion 13 is opened. This initiates the suction operation of the motor 8 and fan so that dust is transferred from the dust box 7 to the tank 27. The dust being transferred from the dust box 7 to the tank 27 passes through the dust collection hose 35. The dust is removed from the dust box 7.

[0088] After the suction operation is performed with the power tool 1A placed on the mounting section 41, the suction operation is stopped. The suction operation may be stopped while the power tool 1A is placed on the mounting section 41. For example, the suction operation may be stopped after a certain period of time has passed since the power tool 1A was placed on the mounting section 41. The suction operation may be stopped after all the dust in the dust box 7 has been transferred to the tank 27. The suction operation may be performed intermittently multiple times while the power tool 1A is placed on the mounting section 41.

[0089] In this embodiment, the suction operation is stopped when the power tool 1A is lifted away from the mounting section 41. To resume cutting, the operator lifts the power tool 1A from the mounting section 41. When the power tool 1A is lifted away from the mounting section 41, the cap section 13 rises relative to the operating member 45. As the cap section 13 rises, the cylindrical section 45A of the operating member 45 moves upward due to the elastic force of the coil spring 46. As the cylindrical section 45A moves upward, the rod section 45B moves upward so as to move away from the switch button 31. This releases the operation of the switch button 31 by the rod section 45B. As the operation of the switch button 31 is released in conjunction with the lift operation, the rotation of the motor 8 and fan, which are the suction section, stops. This stops the suction operation of the motor 8 and fan. In addition, in conjunction with the lift operation, the joint section 44 is removed from the opening 14 of the cap section 13. When the joint 44 is removed from the opening 14 of the cap 13, the passage of the cap 13 is closed by the on / off valve 15. When the joint 44 is removed from the opening 14 of the cap 13, the connection between the joint 44 and the cap 13 is released. When the connection between the joint 44 and the cap 13 is released, the connection between the tank 27 and the dust box 7 is released. The worker can resume cutting work using the power tool 1A.

[0090] <Effects> As described above, in this embodiment, the dust removal device 100 comprises a mounting section 41, a joint section 44 positioned on the mounting section 41, and a motor 38 and fan, which are suction sections positioned on the dust collector 21. The joint section 44 connects the tank 27, which is the first dust collection section of the dust collector 21, and the dust box 7, which is the second dust collection section that collects dust generated from the power tool 1A, in conjunction with the mounting operation in which the power tool 1A is placed on the mounting section 41. The motor 38 and fan start a suction operation triggered by the mounting operation so that dust is transferred from the dust box 7 to the tank 27.

[0091] In the above configuration, dust generated from the workpiece W during the cutting operation is collected in the dust box 7. It is not necessary to connect the power tool 1A and the dust collector 21 via a dust collection hose during the cutting operation. Since the power tool 1A and the dust collector 21 are not connected via a dust collection hose during the cutting operation, a decrease in the work efficiency of the cutting operation is suppressed. When interrupting or ending the cutting operation, the operator places the power tool 1A on the mounting unit 41. The tank 27 of the dust collector 21 and the dust box 7 are connected in conjunction with the placement operation of the power tool 1A on the mounting unit 41. The placement operation triggers the motor 38 and fan of the dust collector 21 to start the suction operation. As a result, dust is transferred from the dust box 7 to the tank 27, and the dust in the dust box 7 is collected in the tank 27. The dust is removed from the dust box 7.

[0092] In this embodiment, the power tool 1A includes a dust box 7.

[0093] In the above configuration, dust generated from the power tool 1A is collected in the dust box 7, which is a component of the power tool 1A. The dust box 7 may also be an accessory included with the power tool 1A.

[0094] In this embodiment, the suction operation is performed with the power tool 1A placed on the mounting section 41, and then the suction operation is stopped.

[0095] In the above configuration, the suction operation is stopped at a predetermined timing, which prevents the dust collector 21 from continuing to operate unnecessarily.

[0096] In this embodiment, the suction operation is stopped when the power tool 1A moves away from the mounting section 41 as a trigger.

[0097] In the above configuration, the suction operation is stopped by triggering the lifting operation, thereby preventing the dust collector 21 from continuing to operate unnecessarily. When resuming cutting work, the worker lifts the power tool 1A from the mounting unit 41. The connection between the tank 27 and the dust box 7 is released in conjunction with the lifting operation that separates the power tool 1A from the mounting unit 41. The suction operation is stopped by triggering the lifting operation.

[0098] In this embodiment, the mounting section 41 is supported by the dust collector 21.

[0099] In the above configuration, the worker can place the power tool 1A on the mounting section 41 supported by the dust collector 21.

[0100] In this embodiment, the dust removal device 100 is connected to the dust box 7 and includes a cap portion 13 having a passage through which dust passes. The joint portion 44 is connected to the cap portion 13.

[0101] In the above configuration, the joint portion 44 and the dust box 7 are connected via the cap portion 13.

[0102] In this embodiment, the dust removal device 100 includes an on-off valve 15 that opens and closes the passage of the cap portion 13. When the power tool 1A is not placed on the mounting portion 41, the passage of the cap portion 13 is closed by the on-off valve 15. When the power tool 1A is placed on the mounting portion 41, the passage of the cap portion 13 is opened.

[0103] In the above configuration, when the power tool 1A is not placed on the mounting section 41, the passage of the cap section 13 is closed by the on-off valve 15, so that dust from the dust box 7 does not spill out of the dust box 7 through the passage of the cap section 13. When the power tool 1A is placed on the mounting section 41, the passage of the cap section 13 is opened, so that dust is transferred from the dust box 7 to the tank 27. In this embodiment, when the power tool 1A is placed on the mounting section 41, the on-off valve 15 moves due to contact with the joint section 44, thereby opening the passage of the cap section 13. Alternatively, after the power tool 1A is placed on the mounting section 41, the on-off valve 15 may move due to the suction force of the dust collector 21, thereby opening the passage of the cap section 13.

[0104] In this embodiment, the dust collector 21 has a suction port 28 connected to the tank 27. The dust removal device 100 includes a dust collection hose 35 connecting the suction port 28 to a joint 44. Dust transferred from the dust box 7 to the tank 27 passes through the dust collection hose 35.

[0105] In the above configuration, the tank 27 and the dust box 7 are connected via a joint 44 and a dust collection hose 35. Dust from the dust box 7 is transferred to the tank 27 via the joint 44 and the dust collection hose 35.

[0106] In this embodiment, the dust removal device 100 is positioned on the surface of the dust collector 21 and includes a switch button 31, which is an input unit operated to switch the start and stop of the suction operation. The switch button 31 is operated in conjunction with the mounting operation.

[0107] In the above configuration, the suction operation is initiated in conjunction with the placement operation by operating the switch button 31 in conjunction with the placement operation.

[0108] In this embodiment, the dust removal device 100 is supported by the joint portion 44 and includes an operating member 45 capable of operating the switch button 31. The operating member 45 moves in conjunction with the mounting operation, while in contact with the switch button 31, by at least a part of the power tool 1A, thereby operating the switch button 31.

[0109] In the above configuration, the suction operation is initiated in conjunction with the placement operation by operating the switch button 31 via the operating member 45.

[0110] [Second Embodiment] A second embodiment will now be described. In the following description, components that are the same as or equivalent to those in the above-described embodiment will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0111] <Dust removal device> Figure 7 is a side view from the right showing the state in which the power tool 1A is placed on the mounting device 401 according to this embodiment. The dust removal device 101 according to this embodiment includes a mounting device 401 supported by a dust collector 21. The mounting device 401 has a mounting section 411, a leg section 421, an opening 431, and a joint section 441. In this embodiment, the dust collector 21 is installed on the floor of the work area with the suction port 28 facing to the right.

[0112] The mounting section 411 is on which the power tool 1A is placed. The operator can place the power tool 1A on the mounting section 411. When the power tool 1A is placed on the mounting section 411, the base 3 of the power tool 1A is in contact with the upper surface of the mounting section 411. Note that Figure 7 shows the state immediately before the power tool 1A is placed on the mounting section 411, so the base 3 is not in contact with the upper surface of the mounting section 411. An opening 431 is provided in a part of the mounting section 411. When the base 3 is in contact with the upper surface of the mounting section 411, at least a part of the rotary cutting tool 4 and the cover 11 are positioned inside the opening 431. At least a part of the cover 11 protrudes downward from the lower surface of the base 3.

[0113] The legs 421 support the lower surface of the mounting section 411. The legs 421 protrude downward from the lower surface of the mounting section 41. The upper surface of the dust collector 21 supports the lower end of the legs 421. The mounting section 411 is supported by the dust collector 21 via the legs 421.

[0114] The joint portion 441 is positioned on the mounting portion 411. The joint portion 441 connects the tank 27 of the dust collector 21 to the dust box 7 of the power tool 1A. The outlet provided at the lower end of the joint portion 441 is connected to the suction port 28 of the dust collector 21 via the dust collection hose 35. The joint portion 441 is connected to the tank 27 via the dust collection hose 35 and the suction port 28. The opening 14 of the cap portion 13 is connected to the dust box 7 via the passage of the cap portion 13.

[0115] If dust accumulates in the dust box 7 due to cutting work, the worker interrupts the cutting work and places the power tool 1A on the mounting unit 411. The joint unit 441 connects the tank 27 of the dust collector 21 and the dust box 7 of the power tool 1A in conjunction with the placement operation of the power tool 1A on the mounting unit 411. The motor 38 and fan located in the dust collector 21 start a suction operation to transfer dust from the dust box 7 to the tank 27, triggered by the placement operation of the power tool 1A on the mounting unit 411.

[0116] When the power tool 1A is not placed on the mounting section 411, the passage of the cap section 13 is closed by the on-off valve 15. During the mounting operation, the upper end of the joint section 441 is inserted into the opening 14 provided at the bottom of the cap section 13. As the upper end of the joint section 441 is inserted into the opening 14, the on-off valve 15 that was closing the opening 14 is moved upward by the upper end of the joint section 441. This opens the passage of the cap section 13. Also during the mounting operation, the joint section 441 and the cap section 13 are connected. Also during the mounting operation, a part of the cover 11 is positioned inside the opening 431 of the mounting section 411. The lower end of the cover 11 protrudes downward from the bottom surface of the mounting section 411.

[0117] With the upper end of the joint portion 441 inserted into the opening 14, the power tool 1A is lowered so that the base 3 contacts the upper surface of the mounting portion 411. At this point, the lower end of the cover 11, which protrudes below the lower surface of the mounting portion 411, contacts the switch button 31. With the lower end of the cover 11 and the switch button 31 in contact, the power tool 1A is lowered further, pressing the switch button 31. In this embodiment, the power tool 1A moves downward in conjunction with the mounting operation, contacting the switch button 31 and operating the switch button 31. When the switch button 31 is pressed in conjunction with the mounting operation, the motor 8 and fan, which are the suction portion, rotate. This starts the suction operation of the motor 8 and fan so that dust is transferred from the dust box 7 to the tank 27. The dust transferred from the dust box 7 to the tank 27 passes through the dust collection hose 35. The dust is removed from the dust box 7.

[0118] After the suction operation is performed with the power tool 1A placed on the mounting section 411, the suction operation is stopped. In this embodiment, the suction operation is stopped triggered by a lift operation in which the power tool 1A moves away from the mounting section 411. To resume cutting work, the operator lifts the power tool 1A from the mounting section 411. When the power tool 1A is lifted from the mounting section 411, the cover 11 moves upward so as to move away from the switch button 31. This releases the operation of the switch button 31 by the cover 11. As the operation of the switch button 31 is released in conjunction with the lift operation, the rotation of the motor 8 and fan, which are the suction section, stops. This stops the suction operation of the motor 8 and fan. Also, in conjunction with the lift operation, the joint section 441 is removed from the opening 14 of the cap section 13. When the joint section 441 is removed from the opening 14 of the cap section 13, the passage of the cap section 13 is closed by the on / off valve 15. When the joint portion 441 is removed from the opening 14 of the cap portion 13, the connection between the joint portion 441 and the cap portion 13 is released. The worker can then resume cutting using the power tool 1A.

[0119] <Effects> As described above, in this embodiment, the power tool 1A moves in conjunction with the placement operation while in contact with the switch button 31, thereby operating the switch button 31.

[0120] In the above configuration, the suction operation is initiated in conjunction with the placement operation by operating the switch button 31 via the cover 11 of the power tool 1A.

[0121] [Third Embodiment] A third embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0122] <Dust removal device> Figure 8 is a front perspective view showing the power tool 1A mounted on the mounting device 402 according to this embodiment. Figure 9 is a right-side view showing the power tool 1A mounted on the mounting device 402 according to this embodiment. Figure 10 is a block diagram of the mounting device 402 according to this embodiment.

[0123] The dust removal device 102 according to this embodiment includes a mounting device 402 supported by a dust collector 21. The mounting device 402 has a mounting section 412, a lifting mechanism 422, an opening 432, a joint section 442, and a sensor 36.

[0124] The mounting section 412 is on which the power tool 1A is placed. The operator can place the power tool 1A on the mounting section 412. When the power tool 1A is placed on the mounting section 412, the base 3 of the power tool 1A is in contact with the upper surface of the mounting section 412. Note that Figures 8 and 9 show the state immediately before the power tool 1A is placed on the mounting section 412, so the base 3 is not in contact with the upper surface of the mounting section 412. An opening 432 is provided in a part of the mounting section 412. When the base 3 is in contact with the upper surface of the mounting section 412, at least a part of the rotary cutting tool 4 and the cover 11 are positioned inside the opening 432.

[0125] The lifting mechanism 422 supports the lower surface of the mounting section 412. The lifting mechanism 422 raises and lowers the mounting section 412. The lifting mechanism 422 is supported on the upper surface of the dust collector 21. The mounting section 412 is supported by the dust collector 21 via the lifting mechanism 422.

[0126] The joint portion 442 is positioned on the mounting portion 412. The joint portion 442 connects the tank 27 of the dust collector 21 to the dust box 7 of the power tool 1A. The outlet provided at the lower end of the joint portion 442 is connected to the suction port 28 of the dust collector 21 via the dust collection hose 35. The joint portion 442 is connected to the tank 27 via the dust collection hose 35 and the suction port 28. The opening 14 of the cap portion 13 is connected to the dust box 7 via the passage in the cap portion 13.

[0127] Sensor 36 is a mounting sensor that detects when the power tool 1A is placed on the mounting section 412. Sensor 36 is positioned on the mounting section 412. When the power tool 1A is placed on the mounting section 412, a part of the cover 11 is positioned inside the opening 432 of the mounting section 412, and the lower end of the cover 11 protrudes below the lower surface of the mounting section 412. In this embodiment, sensor 36 detects when the power tool 1A is placed on the mounting section 412 by detecting the cover 11 that protrudes below the lower surface of the mounting section 412. In this embodiment, sensor 36 is positioned on the lower surface of the mounting section 412. Sensor 36 detects the cover 11 without contact. Sensor 36 may also be an optical sensor that detects the cover 11 without contact by emitting detection light and receiving the detection light reflected by the cover 11. Alternatively, sensor 36 may detect the cover 11 by contact with it.

[0128] As shown in Figure 10, the detection data from the sensor 36 is output to the controller 37 mounted on the dust collector 21. The sensor 36 and the controller 37 may be connected wirelessly or via a signal cable. Based on the detection data from the sensor 36, the controller 37 drives the motor 38 when it determines that the power tool 1A has been placed on the mounting section 412. The motor 38 and the fan start suction operation when the controller 37 determines, based on the detection data from the sensor 36, that the power tool 1A has been placed on the mounting section 412.

[0129] If dust accumulates in the dust box 7 due to cutting work, the worker interrupts the cutting work and places the power tool 1A on the mounting unit 412. The joint unit 442 connects the tank 27 of the dust collector 21 and the dust box 7 of the power tool 1A in conjunction with the placement operation of the power tool 1A on the mounting unit 412. The motor 38 and fan located in the dust collector 21 are triggered by the placement operation of the power tool 1A on the mounting unit 412 to start a suction operation so that dust is transferred from the dust box 7 to the tank 27.

[0130] When the power tool 1A is not placed on the mounting section 412, the passage of the cap section 13 is closed by the on-off valve 15. During the mounting operation, the upper end of the joint section 442 is inserted into the opening 14 provided at the bottom of the cap section 13. As the upper end of the joint section 442 is inserted into the opening 14, the on-off valve 15 that was closing the opening 14 is moved upward by the upper end of the joint section 442. This opens the passage of the cap section 13. Also during the mounting operation, the joint section 442 and the cap section 13 are connected. Also during the mounting operation, a part of the cover 11 is positioned inside the opening 432 of the mounting section 412.

[0131] With the upper end of the joint portion 442 inserted into the opening 14, when the power tool 1A is lowered so that the base 3 contacts the upper surface of the mounting portion 412, the lower end of the cover 11 protrudes below the lower surface of the mounting portion 412. The sensor 36 detects that the power tool 1A has been placed on the mounting portion 412 by detecting the cover 11 protruding below the lower surface of the mounting portion 412. The detection data from the sensor 36 is output to the controller 37 mounted on the dust collector 21. Based on the detection data from the sensor 36, if the controller 37 determines that the power tool 1A has been placed on the mounting portion 412, it drives the motor 38. In conjunction with the placement operation, the cover 11 is detected by the sensor 36, causing the motor 8 and fan, which are the suction portion, to rotate. This starts the suction operation of the motor 8 and fan so that dust is transferred from the dust box 7 to the tank 27. The dust transferred from the dust box 7 to the tank 27 passes through the dust collection hose 35. Dust is removed from dustbin 7.

[0132] After the suction operation is performed with the power tool 1A placed on the mounting section 412, the suction operation is stopped. In this embodiment, the suction operation is stopped when the power tool 1A is lifted away from the mounting section 412. To resume cutting work, the operator lifts the power tool 1A from the mounting section 412. When the power tool 1A is lifted from the mounting section 412, the cover 11 moves upward. As a result, the sensor 36 no longer detects the cover 11. When the sensor 36 no longer detects the cover 11 in conjunction with the lift operation, the controller 37 stops the motor 8. As a result, the suction operation of the motor 8 and fan, which are the suction section, stops. Also, in conjunction with the lift operation, the joint section 442 is removed from the opening 14 of the cap section 13. When the joint section 442 is removed from the opening 14 of the cap section 13, the passage of the cap section 13 is closed by the on / off valve 15. When the joint portion 442 is removed from the opening 14 of the cap portion 13, the connection between the joint portion 442 and the cap portion 13 is released. The worker can then resume cutting using the power tool 1A.

[0133] <Effects> As described above, in this embodiment, the dust removal device 102 is equipped with a lifting mechanism 422 for raising and lowering the mounting section 412. The mounting section 412 is supported by the dust collector 21 via the lifting mechanism 422.

[0134] In the above configuration, the worker can position the mounting section 412 at any height, for example, to match the worker's height or the height of the workbench B. This allows the worker to smoothly place the power tool 1A onto the mounting section 412.

[0135] In this embodiment, the dust removal device 102 includes a sensor 36, which is a placement sensor that detects when the power tool 1A is placed on the placement section 41. The motor 38 and fan start suction operation when it is determined, based on the detection data from the sensor 36, that the power tool 1A is placed on the placement section 412.

[0136] In the above configuration, when the power tool 1A is placed on the mounting section 412, the sensor 36 detects this, and the suction operation is started in conjunction with the placement operation.

[0137] In this embodiment, the sensor 36 is positioned on the mounting section 412.

[0138] In the above configuration, the sensor 36 can accurately detect whether or not the power tool 1A is placed on the mounting section 412.

[0139] [Fourth Embodiment] A fourth embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0140] <Dust removal device> Figure 11 is a rear perspective view showing the mounting device 403 according to this embodiment. Figure 12 is a right-side view showing the state in which the power tool 1B is mounted on the mounting device 403 according to this embodiment. Figure 13 is a block diagram showing the mounting device 403 according to this embodiment.

[0141] The dust removal device 103 according to this embodiment includes a mounting device 403 supported by a dust collector 21. The mounting device 403 has a mounting section 413, leg sections 423, an opening 433, a joint section 443, and a switch 39.

[0142] The mounting section 413 is on which the power tool 1B is placed. The operator can place the power tool 1B on the mounting section 413. When the power tool 1B is placed on the mounting section 413, the base 3 of the power tool 1B is in contact with the upper surface of the mounting section 413. In this embodiment, the upper surface of the mounting section 413 includes an inclined surface. The upper surface of the mounting section 413 is inclined downward toward the rear. An opening 433 is provided in part of the mounting section 413. When the base 3 is in contact with the upper surface of the mounting section 413, at least a portion of the rotary cutting tool 4 and the cover 11 are positioned inside the opening 433.

[0143] The legs 423 support the lower surface of the mounting section 413. The legs 423 protrude downward from the front of the lower surface of the mounting section 413. The legs 423 support the mounting section 413 such that its upper surface slopes downward toward the rear. The upper surface of the dust collector 21 supports the lower end of the legs 423. The mounting section 413 is supported by the dust collector 21 via the legs 423. In this embodiment, the upper surface of the dust collector 21 supports the rear end of the lower surface of the mounting section 413.

[0144] The joint portion 443 is positioned on the mounting portion 413. The joint portion 443 connects the tank 27 of the dust collector 21 to the dust box 7 of the power tool 1B. In this embodiment, the power tool 1B has a cap portion 133 connected to the rear of the dust box 7. The cap portion 133 has an opening 143 into which the joint portion 443 is inserted. In this embodiment, the opening 143 is provided at the rear of the cap portion 133. The opening 143 is opened and closed by an on / off valve 153. The joint portion 443 is positioned below the opening 143 of the cap portion 133 of the power tool 1B, which is mounted on the mounting portion 413, in the direction of inclination of the upper surface of the mounting portion 413. In this embodiment, the joint portion 443 is supported by a support plate portion 473. The support plate portion 473 is fixed to the rear of the mounting portion 413.

[0145] The outlet provided at the rear end of the joint section 443 and the suction port 28 of the dust collector 21 are connected via a dust collection hose 35. The joint section 443 is connected to the tank 27 via the dust collection hose 35 and the suction port 28. The opening 143 of the cap section 133 is connected to the dust box 7 via the passage in the cap section 133.

[0146] Switch 39 is a connection sensor that detects when the tank 27 and the dust box 7 are connected. Switch 39 is located on the joint portion 443. When the power tool 1B is placed on the mounting portion 413, due to the action of gravity, the power tool 1B slides along the upper surface of the mounting portion 413 and moves downward toward the rear. As a result, the cap portion 133 approaches the joint portion 443, and the cap portion 133 and the joint portion 443 come into contact. In this embodiment, switch 39 detects when the tank 27 and the dust box 7 are connected by detecting the cap portion 133 connected to the joint portion 443. Switch 39 detects the cap portion 133 by contact with it.

[0147] As shown in Figure 13, the detection data from the switch 39 is output to the controller 37 mounted on the dust collector 21. The switch 39 and the controller 37 may be connected wirelessly or via a signal cable. Based on the detection data from the switch 39, the controller 37 drives the motor 38 when it determines that the power tool 1B has been placed on the mounting section 413 and that the tank 27 and dust box 7 have been connected. The motor 38 and fan start suction operation when the controller 37 determines, based on the detection data from the switch 39, that the power tool 1B has been placed on the mounting section 413 and that the tank 27 and dust box 7 have been connected.

[0148] If dust accumulates in the dust box 7 due to cutting work, the worker interrupts the cutting work and places the power tool 1B on the mounting section 413. The joint section 443 connects the tank 27 of the dust collector 21 and the dust box 7 of the power tool 1B in conjunction with the placement operation of the power tool 1B on the mounting section 413. The motor 38 and fan located in the dust collector 21 start a suction operation to transfer dust from the dust box 7 to the tank 27, triggered by the placement operation of the power tool 1B on the mounting section 413.

[0149] When the power tool 1B is not placed on the mounting section 413, the passage of the cap section 133 is closed by the on-off valve 153. During the mounting operation, as gravity causes the base 3 to slide downward toward the rear on the upper surface of the mounting section 413, the front end of the joint section 443 is inserted into the opening 143 provided at the rear of the cap section 133. As the front end of the joint section 444 is inserted into the opening 143, the on-off valve 153, which was closing the opening 143, is moved forward by the front end of the joint section 443. This opens the passage of the cap section 133.

[0150] With the front end of the joint portion 443 inserted into the opening 143, when gravity causes the base 3 to slide downward and backward along the upper surface of the mounting portion 413, the joint portion 443 connects to the cap portion 133. The switch 39 detects the cap portion 133 connected to the joint portion 443, thereby detecting that the power tool 1B has been placed on the mounting portion 413 and that the tank 27 and the dust box 7 have been connected. The detection data from the switch 39 is output to the controller 37 mounted on the dust collector 21. Based on the detection data from the switch 39, if the controller 37 determines that the power tool 1B has been placed on the mounting portion 413 and that the tank 27 and the dust box 7 have been connected, it drives the motor 38. In conjunction with the mounting operation, the cap portion 133 is detected by the switch 39, causing the motor 8 and fan, which are the suction portion, to rotate. This starts the suction operation of the motor 8 and fan so that dust is transferred from the dust box 7 to the tank 27. The dust transferred from the dust box 7 to the tank 27 passes through the dust collection hose 35. The dust is removed from the dust box 7.

[0151] After the suction operation is performed with the power tool 1B placed on the mounting section 413, the suction operation is stopped. In this embodiment, the suction operation is stopped when the power tool 1B is lifted away from the mounting section 413. To resume cutting work, the operator lifts the power tool 1B from the mounting section 413. When the power tool 1B is lifted away from the mounting section 413, the cap section 133 separates from the joint section 443 and moves upward. As a result, the switch 39 no longer detects the cap section 133. When the switch 39 no longer detects the cap section 133 in conjunction with the lift operation, the controller 37 stops the motor 8. As a result, the suction operation of the motor 8 and fan, which are the suction section, stops. Also, in conjunction with the lift operation, the joint section 443 is removed from the opening 143 of the cap section 133. When the joint portion 443 is removed from the opening 143 of the cap portion 133, the passage of the cap portion 133 is closed by the on-off valve 153. The worker can then resume cutting using the power tool 1B.

[0152] <Effects> As described above, in this embodiment, the upper surface of the mounting section 413 includes an inclined surface. The power tool 1B is connected to the dust box 7, which is the second dust collection section, and has a cap section 133 that has a passage through which dust passes. The joint section 443 is positioned below the opening 143 of the cap section 133 of the power tool 1B that is mounted on the mounting section 413, in the direction of inclination of the upper surface of the mounting section 413.

[0153] In the above configuration, gravity makes it easier for the cap portion 133 of the power tool 1B to approach the joint portion 443, so that the dust box 7 and the joint portion 443 are smoothly connected via the cap portion 133.

[0154] In this embodiment, the tank 27 and the dust box 7 are connected in conjunction with the placement operation. The dust removal device 103 includes a switch 39, which is a connection sensor that detects when the tank 27 and the dust box 7 are connected. The motor 38 and fan, which are the suction section, start suction operation when it is determined that the tank 27 and the dust box 7 are connected based on the detection data from the switch 39.

[0155] In the above configuration, the switch 39 detects that the tank 27 and the dust box 7 are connected, and the suction operation is started in conjunction with the placement operation.

[0156] [Fifth Embodiment] A fifth embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0157] <Dust removal device> Figure 14 is a front perspective view showing the power tool 1C according to this embodiment. Figure 15 is a rear perspective view showing the power tool 1C according to this embodiment.

[0158] As shown in Figures 14 and 15, in this embodiment, the power tool 1C includes a pipe member 16 connected to the rear of the dust box 7, an expandable hose 18 connected to the pipe member 16, a cap portion 134 connected to the expandable hose 18, and a base plate 17 to which the cap portion 134 is fixed.

[0159] The base plate 17 is fixed to at least a portion of the housing 2. The relative position between the base 3 and the base plate 17 does not change. The lower surface of the base 3 and the lower surface of the base plate 17 are located in the same plane.

[0160] The cap portion 134 is connected to the dust box 7. The cap portion 134 has a passage through which dust passes. The cap portion 134 is a cylindrical member. The base plate 17 has a cap opening in which the cap portion 134 is placed. The cap portion 134 is fixed to the base plate 17. An opening 144 is provided at the lower end of the cap portion 134. An on-off valve 154 is provided in the opening 144. The on-off valve 154 opens and closes the passage of the cap portion 134.

[0161] The pipe member 16 is connected to the rear of the dust box 7. A portion of the pipe member 16 is bent. In this embodiment, the upper end of the cap portion 134 is connected to the dust box 7 via the expandable hose 18 and the pipe member 16.

[0162] Figure 16 is a right-side view showing the state in which the power tool 1C is placed on the mounting device 404 according to this embodiment. The dust removal device 104 according to this embodiment includes a mounting device 404 supported by a dust collector 21. The mounting device 404 has a mounting section 414, a leg section 424, an opening 434, a joint section 444, and a sensor 36.

[0163] The mounting section 414 is on which the power tool 1C is placed. The operator can place the power tool 1C on the mounting section 414. When the power tool 1C is placed on the mounting section 414, the base 3 and base plate 17 of the power tool 1C are in contact with the upper surface of the mounting section 414. Note that Figure 16 shows the state immediately before the power tool 1C is placed on the mounting section 414, so the base 3 and base plate 17 are not in contact with the upper surface of the mounting section 414. An opening 434 is provided in part of the mounting section 414. When the base 3 and base plate 17 are in contact with the upper surface of the mounting section 414, at least a part of the rotary cutting tool 4 and cover 11 are positioned inside the opening 434.

[0164] The legs 424 support the lower surface of the mounting section 414. The legs 424 protrude downward from the lower surface of the mounting section 414. The upper surface of the dust collector 21 supports the lower end of the legs 424. The mounting section 414 is supported by the dust collector 21 via the legs 424.

[0165] The joint portion 444 is positioned on the mounting portion 414. The joint portion 444 connects the tank 27 of the dust collector 21 to the dust box 7 of the power tool 1C. The outlet provided at the lower end of the joint portion 444 is connected to the suction port 28 of the dust collector 21 via the dust collection hose 35. The joint portion 444 is connected to the tank 27 via the dust collection hose 35 and the suction port 28. The opening 144 of the cap portion 134 is connected to the dust box 7 via the passage of the cap portion 134, the passage of the expandable hose 18, and the passage of the pipe member 16.

[0166] Sensor 36 is a placement sensor that detects when the power tool 1C is placed on the mounting section 414. Sensor 36 detects when the power tool 1C is placed on the mounting section 414 by detecting the cover 11 which protrudes below the lower surface of the mounting section 414. The detection data from sensor 36 is output to a controller 37 mounted on the dust collector 21. Based on the detection data from sensor 36, if the controller 37 determines that the power tool 1C is placed on the mounting section 412, it drives the motor 38.

[0167] If dust accumulates in the dust box 7 due to cutting work, the worker interrupts the cutting work and places the power tool 1C on the mounting section 414. The joint section 444 connects the tank 27 of the dust collector 21 and the dust box 7 of the power tool 1C in conjunction with the placement operation of the power tool 1C on the mounting section 414. The motor 38 and fan located in the dust collector 21 start a suction operation to transfer dust from the dust box 7 to the tank 27, triggered by the placement operation of the power tool 1C on the mounting section 414.

[0168] When the power tool 1C is not placed on the mounting section 414, the passage of the cap section 134 is closed by the on-off valve 154. During the mounting operation, the upper end of the joint section 444 is inserted into the opening 144 provided at the bottom of the cap section 134. As the upper end of the joint section 444 is inserted into the opening 144, the on-off valve 154 that was closing the opening 144 is moved upward by the upper end of the joint section 444. This opens the passage of the cap section 134. The joint section 444 is connected to the cap section 134. Also, during the mounting operation, a part of the cover 11 is positioned inside the opening 434 of the mounting section 414. As a part of the cover 11 is positioned inside the opening 434, the base 3 and base plate 17 can contact the upper surface of the mounting section 414.

[0169] With the upper end of the joint portion 444 inserted into the opening 144, when the power tool 1C is lowered so that the base 3 and base plate 17 contact the upper surface of the mounting portion 414, the lower end of the cover 11 protrudes below the lower surface of the mounting portion 414. The sensor 36 detects that the power tool 1C has been placed on the mounting portion 414 by detecting the cover 11 protruding below the lower surface of the mounting portion 414. The detection data from the sensor 36 is output to the controller 37 mounted on the dust collector 21. Based on the detection data from the sensor 36, if the controller 37 determines that the power tool 1C has been placed on the mounting portion 414, it drives the motor 38. In conjunction with the placement operation, the cover 11 is detected by the sensor 36, causing the motor 8 and fan, which are the suction portion, to rotate. This starts the suction operation of the motor 8 and fan so that dust is transferred from the dust box 7 to the tank 27. The dust transferred from the dust box 7 to the tank 27 passes through the dust collection hose 35. The dust is removed from the dust box 7.

[0170] After the suction operation is performed with the power tool 1C placed on the mounting section 414, the suction operation is stopped. In this embodiment, the suction operation is stopped when the power tool 1C is lifted away from the mounting section 414. To resume cutting work, the operator lifts the power tool 1C from the mounting section 414. When the power tool 1C is lifted from the mounting section 414, the cover 11 moves upward. As a result, the sensor 36 no longer detects the cover 11. When the sensor 36 no longer detects the cover 11 in conjunction with the lift operation, the controller 37 stops the motor 8. As a result, the suction operation of the motor 8 and fan, which are the suction section, stops. Also, in conjunction with the lift operation, the joint section 444 is removed from the opening 144 of the cap section 134. When the joint section 444 is removed from the opening 144 of the cap section 134, the passage of the cap section 134 is closed by the on / off valve 154. When the joint portion 444 is removed from the opening 144 of the cap portion 134, the connection between the joint portion 444 and the cap portion 134 is released. The worker can then resume cutting using the power tool 1C.

[0171] <Effects> As described above, in this embodiment, the cap portion 134 is connected to the dust box 7 via the expandable hose 18.

[0172] In the above configuration, the operator can smoothly change the relative position between the cap portion 134 and the dust box 7. The cap portion 134 is fixed to the base plate 17. In this embodiment, the relative position between the base 3 and the base plate 17 does not change. That is, the relative position between the base 3 and the cap portion 134 is fixed. The housing 2 is movable relative to the base 3. By moving the housing 2 relative to the base 3, the amount of protrusion of the rotating blade tool 4 from the lower surface of the base 3 is adjusted. With the relative position between the base 3 and the cap portion 134 fixed by the expandable hose 18, the operator can smoothly move the housing 2 relative to the base 3. The dust box 7 is fixed to the housing 2. Therefore, the operator can smoothly change the relative position between the cap portion 134 and the dust box 7 by the expandable hose 18. Furthermore, even if the housing 2 is moved relative to the base 3, the relative position between the base 3 and the cap portion 134 does not change, so the operator can connect the joint portion 444 and the cap portion 134 and bring the base 3 and the mounting portion 414 into contact during the mounting operation.

[0173] [Sixth Embodiment] A sixth embodiment will now be described. In the following description, components that are the same as or equivalent to those in the embodiments described above will be denoted by the same reference numerals, and the descriptions of those components will be simplified or omitted.

[0174] <Dust removal device> Figure 17 is a schematic diagram showing the cutting operation according to this embodiment. The mounting device 404, including the mounting section 414, is detachable from the dust collector 21. As shown in Figure 17, the mounting operation may be performed with the mounting device 404 detached from the dust collector 21. The joint section 444 of the mounting device 404 and the suction port 28 of the dust collector 21 are connected via a dust collection hose 35. In the example shown in Figure 17, the dust collector 21 is installed on the floor of the workplace. The mounting device 404 is installed on the workbench B.

[0175] <Effects> As described above, in this embodiment, the mounting device 404 including the mounting section 414 is detachable from the dust collector 21. In this embodiment, the mounting operation is performed with the mounting device 404 including the mounting section 41 detached from the dust collector 21.

[0176] In the above configuration, the operator can place the mounting section 414 at any position. This allows the operator to smoothly place the power tool 1C on the mounting section 414. [Explanation of symbols]

[0177] 1A...Power tool, 1B...Power tool, 1C...Power tool, 2...Housing, 2A...Gear housing, 2B...Motor housing, 2C...Grip section, 3...Base, 4...Rotating blade, 5...Battery mounting section, 6...Trigger lever, 7...Dust box (second dust collection section), 8...Motor, 9...Front support section, 10...Rear support section, 11...Cover, 12...Battery pack, 13...Cap section, 14...Opening, 15...On / off valve, 16...Pipe member, 17...Base plate, 18...Extendable hose, 21...Dust collector, 22...Tank unit, 23...Main unit, 24...Latch, 25...Caster, 26...Suction nozzle, 27...Tank (first dust collection unit), 28...Suction port, 29...Main unit housing, 30...Operation panel, 31...Switch button (input unit), 32...Handle, 33...Main power switch, 34...Suction force adjustment switch, 35...Dust collection hose, 36...Sensor (mounted sensor), 37...Controller, 38...Motor (suction unit), 39...Swivel 40...Catch (connection sensor), 41...Mounting device, 42...Leg part, 43...Opening, 44...Joint part, 45...Operating member, 45A...Cylindrical part, 45B...Rod part, 46...Coil spring, 100...Dust removal device, 101...Dust removal device, 102...Dust removal device, 103...Dust removal device, 104...Dust removal device, 133...Cap part, 134...Cap part, 143...Opening, 144...Opening, 153...On / off valve, 154...On / off valve, 401 ...Placement device, 402...Placement device, 403...Placement device, 404...Placement device, 411...Placement section, 412...Placement section, 413...Placement section, 414...Placement section, 421...Legs, 422...Lifting mechanism, 423...Legs, 424...Legs, 431...Opening, 432...Opening, 433...Opening, 434...Opening, 441...Joint section, 442...Joint section, 443...Joint section, 444...Joint section, 473...Support plate section, B...Workbench, W...Workpiece.

Claims

1. A placement portion; a joint portion that is disposed on the placement portion and that connects a first dust collecting portion of the dust collector to a second dust collecting portion that collects dust generated from the power tool in response to a placement operation of the power tool being placed on the placement portion; a suction unit that is disposed in the dust collector and starts a suction operation so that the dust is transferred from the second dust collecting unit to the first dust collecting unit in response to the placing operation. Dust removal equipment.

2. The electric power tool includes the second dust collecting unit. The dust removing device according to claim 1 .

3. The suction operation is performed while the electric power tool is placed on the placement portion, and then the suction operation is stopped. The dust removing device according to claim 1 .

4. The suction operation is stopped while the electric power tool is placed on the placement portion. The dust removing device according to claim 3.

5. The suction operation is stopped by a lifting operation in which the electric tool is separated from the placement portion as a trigger. The dust removing device according to claim 4.

6. The mounting portion is supported by the dust collector. The dust removing device according to claim 1 .

7. The placement portion is detachable from the dust collector. The dust removing device according to claim 6.

8. The placing operation is performed in a state where the placement unit is detached from the dust collector. The dust removing device according to claim 7.

9. A lifting mechanism for lifting and lowering the placement unit is provided, The mounting portion is supported by the dust collector via the lifting mechanism. The dust removing device according to claim 6.

10. The dust collector includes the placement unit. The dust removing device according to claim 1 .

11. a cap portion connected to the second dust collecting portion and having a passage through which the dust passes; The joint portion is connected to the cap portion. The dust removing device according to claim 1 .

12. The cap portion is connected to the second dust collecting portion via an expandable hose. The dust removing device according to claim 11.

13. an opening / closing valve for opening and closing the passage of the cap portion; When the electric power tool is not placed on the placement portion, the passage is closed by the on-off valve, The passage is opened when the electric tool is placed on the placement portion. The dust removing device according to claim 11.

14. The dust collector has a suction port connected to the first dust collecting unit, a dust collection hose connecting the suction port and the joint portion; Dust transferred from the second dust collecting unit to the first dust collecting unit passes through the dust collecting hose. The dust removing device according to claim 1 .

15. an input unit that is disposed on a surface of the dust collector and is operated to switch between starting and stopping the suction operation; The input unit is operated in conjunction with the placing operation. The dust removing device according to claim 1 .

16. an operation member supported by the joint portion and capable of operating the input portion, The operating member is moved by at least a part of the power tool in a state of contact with the input unit in response to the placing operation, thereby operating the input unit. The dust removing device according to claim 15.

17. The electric power tool moves in contact with the input unit in response to the placing operation to operate the input unit. The dust removing device according to claim 16.

18. a placement sensor for detecting when the power tool is placed on the placement section, the suction unit starts the suction operation when it is determined that the electric power tool is placed on the placement portion based on detection data from the placement sensor. The dust removing device according to claim 1 .

19. The placement sensor is disposed on the placement section. The dust removing device according to claim 18.

20. The first dust collecting unit and the second dust collecting unit are connected in conjunction with the placing operation, a connection sensor that detects that the first dust collecting unit and the second dust collecting unit are connected, The suction unit starts the suction operation when it is determined that the first dust collection unit and the second dust collection unit are connected based on the detection data of the connection sensor. The dust removing device according to claim 1 .

21. The upper surface of the mounting portion includes an inclined surface, The electric power tool includes a cap portion connected to the second dust collecting portion and having a passage through which the dust passes, the joint portion is disposed below an opening of a cap portion of the electric power tool placed on the placement portion in a direction of inclination of the inclined surface, The dust removing device according to claim 20.

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