JP2010201513A - Protective cover and power tool equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective cover and a power tool equipped with the same capable of appropriately performing cutting work by a wall. <P>SOLUTION: The protective cover 10 and the power tool 1 equipped with the same 10 includes: a base part 11 having a guide surface 11A sliding on a floor while abutting on the floor; and a cover part 12 supported on the base part 11, mounted on a body 2, and storing a rotary blade 9 attached to a rotary shaft part extended from the body 2. The base part 11 supports the cover part 12 so that the rotary blade 9 projects from the guide surface 11A, and is arranged only on the body 2 side more than the rotary blade 9. The cover part 12 comprises a peripheral wall part 14 covering the periphery of the rotary blade 9 and a side wall part 13 covering the side surface of the body 2 side. An end part 14A of a counter body 2 side of the peripheral wall 14 is approximately on the same plane as the counter body 2 side of the rotary blade 9 or projected toward the counter body 2 side of the rotary blade 9. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a protective cover and a power tool including the protective cover, and more particularly to a protective cover that protects dust generated by cutting with a rotating blade and a power tool including the protective cover.

  As shown in Patent Document 1, a conventional dust collecting cover for a portable cutting machine is mounted on a portable cutting machine used to cut and cut a work material such as a concrete material so as to cover a rotary blade. . This dust collection cover has a hose attachment port (duct) to which a hose extending from the suction device is connected, and dust generated by cutting the work material with a rotary blade can be sucked. In this dust collection cover, in order to prevent dust from being ejected to the outside, a wall is provided around the rotary blade other than the surface in contact with the work material to maintain airtightness.

JP 2007-38645 A

  For example, when a portable cutting machine equipped with the dust collecting cover having the above-described configuration is used to cut a groove at a position just before the wall, the protective cover becomes an obstacle and it is difficult to bring the rotary blade closer to the wall. In the case of a portable cutting machine equipped with a dust collecting cover, the direction of attachment of the portable cutting machine with respect to the protective cover is one direction, so when the cutting proceeds with the portable cutting machine equipped with the protective cover, the main body of the portable cutting machine There was a case where the portion abutted against the wall and could not proceed.

  Therefore, an object of this invention is to provide the power tool provided with the protective cover and protective cover which can perform the cutting operation by the wall suitably.

  In order to solve the above problems, the present invention provides a base portion having a guide surface that abuts on a work material and slides on the work material, and is supported on the base portion and attached to the tool body, A cover portion that accommodates a rotary blade mounted on a rotary shaft portion extending from the tool body, and the base portion carries the cover portion so that the rotary blade protrudes from the guide surface. The cover portion is arranged only on the tool main body side of the rotary blade, and the cover portion is configured of a wall that covers the outer periphery of the rotary blade and the side surface of the tool main body, and a wall that covers the outer periphery of the rotary blade. The edge on the counter tool main body side provides a protective cover that is substantially flush with the counter tool main body side of the rotary blade or protrudes from the counter tool main body side of the rotary blade toward the counter tool main body side.

  In order to solve the above-described problems, the present invention provides a housing, a rotating shaft portion that extends from the housing and on which a rotary blade is mounted, a mounted portion that is disposed around the rotating shaft portion, and the mounted portion. And a protective tool that covers the rotary blade and is provided with a power tool.

  According to such a structure, it can cut with a rotary blade in the position substantially equal to the extension direction edge part position of a protective cover. Therefore, for example, even when a groove is formed on the floor near the wall, the groove can be formed at the edge of the wall by performing the work with the end portion in the extending direction of the protective cover along the wall. Further, when cutting the floor near the wall, the space in the protective cover can be kept closed by the cover part and the wall, so that dust and the like are prevented from being ejected outside the protective cover.

  In the protective cover and the power tool configured as described above, it is preferable that a side cover portion that covers the side surface of the rotary blade on the side opposite to the tool main body is detachable from the cover portion.

  According to such a configuration, when cutting at a place other than the wall, the side cover can be attached to the cover part to keep the space in the protective cover closed together with the cover part. Etc. are suppressed from being ejected outside the protective cover.

  Moreover, it is preferable that the base part and the cover part are connected via a cutting depth adjusting mechanism capable of changing a protruding amount of the rotary blade from the guide surface. According to such a configuration, a groove having a desired cutting depth can be formed.

  In the cover portion, a brush whose tip protrudes from the edge toward the side opposite to the tool body is attached to the edge of the wall covering the outer periphery of the rotary blade or in the vicinity of the edge. preferable.

  According to such a configuration, when the floor surface near the wall is cut as described above, the brush is interposed between the cover portion and the wall. Since the cover part is made of a hard material from the viewpoint of rigidity, there is a tendency that the followability with respect to the wall having unevenness in particular tends to be inferior, but by following the brush, the followability with respect to the wall is improved, Formation of a gap between them is suppressed. Moreover, since it is suppressed that a cover part contact | abuts a wall directly, the damage | wound to a wall by a cover part can be suppressed.

  It is preferable that a duct that is connected to a suction device and sucks the inside of the cover portion is attached to the cover portion.

  According to such a configuration, dust generated in the cover portion can be sucked, and dust ejected outside the cover portion can be reduced.

  Further, in the power tool having the above-described configuration, the rotary blade is mounted on the rotary shaft portion via a mounting jig, and the mounting jig is on the side opposite to the housing of the rotary blade in the extending direction of the rotary shaft portion. It is preferable that it is located on the housing side rather than the side surface.

  According to such a configuration, since there is no member protruding from the rotary blade to the side opposite to the housing, the floor surface can be further cut by the wall.

  In order to solve the above-described problems, the present invention accommodates a rotary blade mounted on a rotary shaft portion extending from a tool body and is attached to a mounted portion provided around the rotary shaft portion of the tool body. A cover portion, and an attachment portion connected to the tool main body, and arranged around the axis of the rotary shaft portion in a state of being attached to the tool main body, and selectively And a plurality of ducts connected to the suction device, and the mounting portion has at least a first radial direction and a second radial direction in the radial direction of the rotary shaft portion, respectively. A protective cover that is selectively attached to the attached portion is provided.

  In the protective cover having the above-described configuration, the plurality of ducts include a first duct and a second duct that are respectively provided on one side and the other side across the mounting portion, and the mounting portion has the first radius. The first duct is closed by the tool body so that the suction device cannot be attached while the suction duct is attached to the attachment portion, and the suction device can be attached to the second duct. In the state where the portion is mounted on the mounted portion so as to face the first radial direction, the suction duct can be mounted on the first duct and the suction duct cannot be mounted on the second duct. It is preferable to be plugged with.

  In order to solve the above-described problems, the present invention provides a housing, a rotating shaft portion that extends from the housing and on which a rotary blade is mounted, a mounted portion that is disposed around the rotating shaft portion, and the mounted portion. And a protective tool that covers the rotary blade and is provided with a power tool.

  According to such a configuration, when the cutting direction is reversed, the cutting direction can be easily reversed by changing the orientation of the tool body with respect to the protective cover based on the positional relationship between the mounting portion and the mounted portion. Can do. In addition, dust in the protective cover can be sucked by connecting a suction device to the duct, but even when the orientation of the tool body relative to the protective cover is changed, by switching the use of multiple ducts, Irrespective of the dust, the dust can be preferably sucked.

  The protective cover and the power tool having the above-described configuration include a base portion having a guide surface that abuts on the work material and slides on the work material, and the cover portion is supported on the base portion. Is preferred.

  According to such a configuration, the work material and the protective cover come into contact with each other by the guide surface of the base portion, so that the tool on which the protective cover is mounted can slide on the work material suitably.

  In addition, the cover portion includes a wall that covers only the outer periphery of the rotary blade and the side surface on the side opposite to the extending direction, and the edge of the wall that covers the outer periphery of the rotary blade in the direction in which the rotary shaft portion extends. Is preferably substantially the same position as the end of the rotary blade in the extending direction or the end edge protrudes from the end.

  According to such a structure, it can cut with a rotary blade in the position substantially equal to the extension direction edge part position of a protective cover. Therefore, for example, even when a groove is formed on the floor near the wall, the groove can be formed at the edge of the wall by performing the work with the end portion in the extending direction of the protective cover along the wall. Further, when cutting the floor near the wall, the space in the protective cover can be kept closed by the cover part and the wall, so that dust and the like are prevented from being ejected outside the protective cover.

  The protective cover according to any one of claims 8 to 11, wherein each of the plurality of ducts is configured to be openable and closable.

  According to such a configuration, it is possible to suppress dust from being ejected from a duct that is not used or from outside air being sucked from a duct that is not used.

  The power tool having the above configuration further includes a sub handle attached to the housing, and the housing extends in a radial direction of the rotating shaft portion and is separated from each other in a circumferential direction of the rotating shaft portion. Preferably, the sub handle is selectively attached to the one side surface and the other side surface.

  According to such a configuration, the power tool can be stably held regardless of the cutting direction.

  According to the protective cover and the power tool provided with the protective cover of the present invention, it is possible to suitably perform cutting work at the wall.

The side view of the power tool with which the protective cover and protective cover concerning embodiment of this invention were mounted | worn. The exploded front sectional view of the power tool with which the protective cover concerning an embodiment of the invention and a protective cover were equipped. The side view (tool main body side) of the protective cover concerning embodiment of this invention. Sectional drawing which shows the mounting state of the cap to the duct of the protective cover concerning embodiment of this invention. The side view (counter tool main body side) of the protective cover concerning embodiment of this invention. Sectional drawing which shows the brush vicinity of the protective cover concerning embodiment of this invention. Front sectional drawing which shows the state which cuts a cut material with the power tool with which the protective cover concerning embodiment of this invention was mounted | worn. The side view which shows the change of the protrusion amount of a rotary blade with the power tool with which the protective cover concerning embodiment of this invention was mounted | worn. The side view which shows the state which changed the position with respect to the power tool of a protective cover with the power tool with which the protective cover concerning embodiment of this invention was mounted | worn. The side view which shows mounting | wearing of a side cover with the power tool with which the protective cover concerning embodiment of this invention was mounted | worn.

  Hereinafter, a protective cover according to an embodiment of the present invention and a power tool including the protective cover will be described with reference to FIGS. 1 to 10. A portable cutting machine 1 that is a power tool shown in FIG. 1 is configured so that a rotary blade 9 can be mounted, and a protective cover 10 that covers the rotary blade 9 can be mounted.

  The portable cutting machine 1 is mainly composed of a main body 2 and an output shaft portion 3 (FIG. 2) extending from the main body 2. The main body 2 incorporates a motor (not shown) and the like, and a first housing 21 serving as a gripped portion, and a gear mechanism (not shown) that transmits the output of the motor (not shown) to the output shaft portion 3. The second housing 22 is mainly configured. As shown in FIG. 2, in the second housing 22, a mounting portion 23 that is a mounted portion to which the protective cover 10 is attached is provided at a position around the output shaft portion 3. The mounting portion 23 has a substantially circular outer periphery in a cross section orthogonal to the axial direction of the output shaft portion 3, and the protective cover 10 is attached to the outer peripheral portion. The second housing 22 has one side surface and the other side surface that extend in the radial direction of the output shaft portion 3 and are separated from each other in the circumferential direction of the output shaft portion 3. A pedestal 22A and a pedestal 22B are provided.

  The output shaft portion 3 is disposed in the second housing 22 and extends in a direction orthogonal to the longitudinal direction of the main body 2 (the direction in which the first housing 21 and the second housing 22 are arranged in parallel in FIG. 1). The motor output is transmitted and rotated. Further, the rotary blade 9 described above is fixed to the output shaft portion 3 so as to rotate coaxially and integrally with a flange 5 which is an attachment jig. The rotary blade 9 is formed with a hole 9a through which the output shaft portion 3 penetrates in the center, and the position near the hole 9a is offset to the main body 2 side. Therefore, when the rotary blade 9 is mounted on the output shaft portion 3 by the flange 5, the flange 5 is prevented from protruding from the side surface of the rotary blade 9 opposite to the main body 2.

  As shown in FIG. 1, the protective cover 10 is mainly composed of a cover part 12 and a base part 11. The base portion 11 is configured by cutting and bending a metal plate such as aluminum, and supports the cover portion 12 via a cutting depth adjusting mechanism described later. A guide surface 11A that comes into contact with a floor, which will be described later, is defined in a portion of the base portion 11 that is configured in a flat plate shape, and a part of the periphery of the rotary blade 9 is exposed from the guide surface 11A. By contacting the floor with the guide surface 11A, the portable cutting machine 1 can slide on the floor suitably. As shown in FIG. 7, the base portion 11 of the protective cover 10 is disposed so as to be positioned closer to the main body 2 than the rotary blade 9.

  As shown in FIG. 2, the cover portion 12 mainly includes a side wall portion 13 that covers the side surface of the rotary blade 9 on the main body 2 side and a peripheral wall portion 14 that covers the outer periphery of the rotary blade 9 in a state of being attached to the main body 2. It is comprised, The structure by which the side surface by the side of the anti-main body 2 of the rotary blade 9 was open | released is taken.

  As shown in FIG. 3, the side wall portion 13 is provided with an adapter 15 that is an attachment portion attached to the mounting portion 23 at the center portion, and an insertion hole 13 a through which the output shaft portion 3 is inserted is formed at the adapter 15 position. Has been. The adapter 15 is configured such that a second frame 15B having an arc-shaped portion is screwed to a first frame 15A having an arc-shaped portion fixed to the side wall portion 13 by a screw 15C. The protective cover 10 is attached to the main body 2 by screwing the screw 15C with the mounting portion 23 (FIG. 2) inserted between the arc-shaped portion of the first frame 15A and the arc-shaped portion of the second frame 15B. Can be fixed.

  As described above, the mounting portion 23 (FIG. 2) has a circular outer periphery, and the adapter 15 fixes the mounting portion 23 at the arc portion. Therefore, the adapter 15 (protective cover 10) is used to mount the mounting portion 23 (main body 2). The positional relationship at the time of fixing can be an arbitrary position in the radial direction of the output shaft portion 3. Therefore, the position when the adapter 15 (protective cover 10) and the mounting portion 23 (main body 2) are fixed is oriented with respect to the protective cover 10 so that the main body 2 faces a first radial direction and a second radial direction. It can be in the state.

  In the side wall portion 13, the first duct 13 </ b> B and the second duct 13 </ b> C having the same shape each having the same first hole 13 b (FIG. 4) and the second hole 13 c are provided on both sides of the adapter 15. It has been. As shown in FIG. 4A, a cap 16 for closing the first hole 13b is attached to the first duct 13B, and a nozzle 17 extended from a suction device (not shown) is attached to the second duct 13C. Installed. By mounting the nozzle 17 and the cap 16, the outside air is suppressed from flowing into the cover portion 12 through the first hole 13 b when the nozzle 17 sucks the inside of the cover portion 12. Since the first duct 13B and the second duct 13C have the same shape, as shown in FIG. 4B, the nozzle 17 is attached to the first duct 13B and the cap 16 is attached to the second duct 13C. It is also possible to suck the inside of the cover part 12.

  In the side wall portion 13, a direction from the insertion hole 13 a toward the first hole 13 b is defined as a first radial direction, and a direction from the insertion hole 13 a toward the second hole 13 c is defined as a second radial direction.

  As shown in FIG. 6, the peripheral wall portion 14 has the end portion 14 </ b> A on the side opposite to the main body 2 slightly from the side surface of the rotary blade 9 on the side opposite to the main body 2, as shown in FIG. 6. It is configured to protrude. Since the flange 5 (FIG. 2) for fixing the rotary blade 9 to the output shaft portion 3 is located on the main body 2 side from the side surface of the rotary blade 9 on the side opposite to the main body 2, the flange 5 (FIG. 2) is the end portion 14 </ b> A. Protruding from is prevented. Further, as shown in FIG. 5, a series of brushes 18 are attached to the peripheral wall portion 14 along the peripheral wall portion 14 at a position inside the cover portion 12. The brush 18 is attached to the peripheral wall portion 14 by three hooks 18A. As shown in FIG. 6, the brush 18 is disposed in the vicinity of the end portion 14A, and its tip slightly protrudes from the end portion 14A toward the anti-body 2 side. Is configured to do.

  As shown in FIG. 8, a fixing bolt 19 </ b> A that is a cutting depth adjusting mechanism, a link 19 </ b> B, and a thumbscrew 19 </ b> C are interposed between the base portion 11 and the cover portion 12. The fixing bolt 19A is disposed in parallel with the output shaft portion 3 at the end portion (hereinafter referred to as the second end portion) of the base portion 11 and the cover portion 12 in the direction from the first duct 13B to the second duct 13C. It penetrates through a hole (not shown) formed in the part 11 and is screwed into the cover part 12. Therefore, the cover part 12 can rotate around the fixing bolt 19 </ b> A with respect to the base part 11 with the fixing bolt 19 </ b> A as the central axis. The link 19B extends from the end (hereinafter referred to as the first end) in the direction from the second duct 13C to the first duct 13B of the base 11 toward the base 11 along the inner surface of the peripheral wall 14. ing. The thumbscrew 19C passes through a hole (not shown) formed in the peripheral wall portion 14 and is screwed with the link 19B. The link 19B can move in the direction along the circumferential direction of the peripheral wall portion 14 with respect to the thumb screw 19C when the thumb screw 19C is loose, and the peripheral wall portion 14 when the thumb screw 19C is fastened. It is fixed so that it cannot move. Therefore, the distance between the base part 11 and the cover part 12 can be changed by rotating the cover part 12 around the fixing bolt 19A relative to the base part 11 with the thumbscrew 19C loosened. Since the main body 2 that supports the rotary blade 9 is attached to the cover portion 12, the protrusion amount t of the rotary blade 9 from the guide surface 11 </ b> A is changed by changing the distance between the cover portion 12 and the base portion 11. The desired cutting depth can be obtained.

  In order to attach the protective cover 10 having the above configuration to the main body 2, the adapter 15 is fixed to the mounting portion 23 so that the main body 2 faces the first radial direction with respect to the protective cover 10. By adopting such an arrangement, only the first duct 13B is covered with the main body 2, so that the mounting of the nozzle 17 on the second duct 13C is not hindered by the main body 2 or the like. Further, since the nozzle 17 is configured to extend from the side wall portion 13, a hose (not shown) extending from the nozzle 17 is prevented from interfering with the operation, and the cutting operation can be performed suitably.

  As shown in FIG. 7, in the portable cutting machine 1 in which the protective cover 10 is attached to the main body 2, when cutting a groove on the floor surface near the wall, the end portion 14A is arranged along the wall. Cutting is performed with the first housing 21 (FIG. 1) and the sub handle 4 held. Since the rotary blade 9 is disposed at a position substantially equal to the position of the end portion 14A of the protective cover 10 as described above, when the groove is formed on the floor surface near the wall, the end portion 14A is operated along the wall. By performing the above, it is possible to form a groove at the edge of the wall. Further, when the floor surface near the wall is cut, the space in the protective cover 10 can be kept closed by the cover portion 12 and the wall. Therefore, the dust generated by cutting the floor with the rotary blade 9 is prevented from being ejected outside the protective cover 10.

  Since the brush 18 protrudes from the end portion 14A, the brush 18 is in contact with the wall, and the end portion 14A is prevented from contacting the wall. Since the cover portion 12 is made of a hard material such as hard plastic from the viewpoint of rigidity, the followability with respect to a wall having irregularities in particular tends to be inferior. The formation of a gap between the protective cover 10 and the wall is suppressed. Moreover, since it is suppressed that 14 A of edge parts contact | abut directly on a wall, the damage | wound to the wall by 14 A of edge parts can be suppressed.

  Further, since dust is sucked by a suction device (not shown) through the nozzle 17 attached to the second duct 13 </ b> C, it is possible to suppress the dust from being ejected outside the protective cover 10. Since the first duct 13B (FIG. 3) is closed by the cap 16 (FIG. 3) at the time of suction, external air does not flow into the cover part 12 from the first duct 13B, and dust is preferably sucked from the nozzle 17 can do.

  In the portable cutting machine 1 described above, when cutting forward toward the first end, the cutting can be performed until the first end of the protective cover 10 comes into contact with a wall ahead of the cutting direction. it can. Therefore, it is possible to cut to the near-wall position of the wall ahead of the cutting direction. On the other hand, in the case of cutting forward toward the second end portion described above, as shown in FIG. 9A, the main body 2 becomes in the way and becomes near the wall ahead of the cutting forward direction. Can't cut to position. Therefore, in this case, the adapter 15 is fixed to the mounting portion 23 so that the main body 2 faces the second radial direction with respect to the protective cover 10. At this time, the second duct 13C is closed by the cap 16 (FIG. 3), and the nozzle 17 (FIG. 2) is connected to the first duct 13B. As a result, cutting can be performed until the second end of the protective cover 10 comes into contact with the wall ahead of the cutting direction. Even when the orientation of the main body 2 with respect to the protective cover 10 is changed, the dust can be suitably sucked regardless of the cutting direction by switching between the first duct 13B and the second duct 13C. When changing the mounting direction of the main body 2 to the second radial direction, the portion to which the sub handle 4 is fixed is changed from the base 22A to the base 22B, so that the sub handle 4 and the first housing 21 are preferably used. And the portable cutting machine 1 can be operated.

  In the portable cutting machine 1 having the above configuration, when cutting is performed at a place other than the wall, dust is ejected from the opening of the cover portion 12 to the outside of the protective cover 10. In order to suppress this, as shown in FIG. 10, a side cover portion 20 that contacts the end portion 14 </ b> A and covers the opening portion of the cover portion 12 is attached. By adopting such a configuration, dust is prevented from being discharged out of the protective cover 10 even when cutting is performed at a place other than the wall.

  The protective cover and the power tool provided with the protective cover of the present invention are not limited to the above-described embodiments, and various improvements and modifications can be made within the scope described in the claims. For example, in the embodiment, the degree of freedom in the mounting direction of the main body 2 is increased by configuring the mounting portion 23 in a circular shape, but this is not limiting, and only the first radial direction and the second radial direction described above can be taken. You may take uneven | corrugated fitting shape. Moreover, although the direction of the main body 2 with respect to the protective cover 10 is two directions of the first radial direction and the second radial direction, it is not limited to this and has a third radial direction different from the first radial direction and the second radial direction. Also good. Accordingly, the duct may also include a third duct. Further, in this embodiment, the duct is closed by attaching a cap, but the present invention is not limited to this, and a closing material such as a rubber film that has been cut into the duct in advance is disposed, and only when the nozzle is attached, the duct penetrates, In other cases, the duct may be closed by a rubber film or the like.

1. ・ Portable cutting machine 2. ・ Main body 3. ・ Output shaft 4 ・ ・ Sub handle 5 ・ ・ Flange 9 ・ ・ Rotating blade 9a ・ ・ Hole 10 ・ ・ Protective cover 11 ・ ・ Base part 11A ・ ・ Guide surface 12..Cover part 13..Side wall part 13B..First duct 13C..Second duct 13a..Through hole 13b..First hole 13c..Second hole 14..Perimeter wall part 14A..End part 15 ·· Adapter 15A · · First frame 15B · · Second frame 15C · · Screw 16 · · Cap 17 · · Nozzle 18 · · Brush 18A · · Hook 19A · · Fixing bolt 19B · · Link 19C · · Thumb screw 20 · · Side cover 21 · · First housing 22 · · Second housing 22A, 22B · · Base 23 · · Mounting portion

Claims (14)

A base portion having a guide surface that contacts the work material and slides on the work material;
A cover portion that is supported on the base portion, is attached to the tool main body, and accommodates a rotary blade mounted on a rotary shaft portion extending from the tool main body,
The base portion supports the cover portion so that the rotary blade protrudes from the guide surface, and is disposed only on the tool body side of the rotary blade,
The cover portion is composed of a wall covering the outer periphery of the rotary blade and the side surface on the tool body side, and an edge on the counter tool body side of the wall covering the outer periphery of the rotary blade is the counter tool of the rotary blade A protective cover, characterized in that it protrudes from the counter tool main body side of the rotary blade toward the counter tool main body side substantially on the same plane as the main body side.   2. The protective cover according to claim 1, wherein a side cover portion that covers a side surface of the rotary blade on the side opposite to the tool main body is detachable from the cover portion.   The base portion and the cover portion are connected via a cutting depth adjusting mechanism capable of changing a protruding amount of the rotary blade from the guide surface. The protective cover in any one.   In the cover portion, a brush whose tip protrudes from the edge toward the side opposite to the tool body is attached to the edge of the wall covering the outer periphery of the rotary blade or in the vicinity of the edge. The protective cover according to any one of claims 1 to 3.   The protective cover according to claim 1, wherein a duct that is connected to a suction device and sucks the inside of the cover portion is attached to the cover portion. A housing;
A rotating shaft portion extending from the housing and fitted with a rotary blade;
A mounted portion disposed around the rotating shaft portion;
A power tool comprising: the protective cover according to any one of claims 1 to 5, which is attached to the attached portion and covers the rotary blade. The rotary blade is mounted on the rotary shaft portion via a mounting jig,
The power tool according to claim 6, wherein the mounting jig is located on the housing side with respect to the side opposite to the housing of the rotary blade in the extending direction of the rotary shaft portion. A cover portion that accommodates a rotary blade that is mounted on a rotary shaft portion that extends from the tool main body and is attached to a mounted portion that is provided around the rotary shaft portion of the tool main body;
The cover portion is arranged around the periphery of the rotating shaft portion with the mounting portion connected to the tool main body and attached to the tool main body, and selectively connected to the suction device. A plurality of ducts,
The attaching portion is selectively attached to the attached portion in at least a state facing the first radial direction and a state facing the second radial direction in the radial direction of the rotating shaft portion, respectively. Protective cover. The plurality of ducts are composed of a first duct and a second duct respectively provided on one side and the other side across the mounting portion,
The first duct is blocked by the tool body so that the suction device cannot be mounted while the mounting portion is mounted on the mounted portion in the first radial direction, and the second duct is the suction device. Can be installed,
The first duct can be mounted with the suction device and the second duct cannot be mounted with the suction device with the mounting portion mounted on the mounted portion facing the second radial direction. The protective cover according to claim 8, wherein the protective cover is closed with a tool body. A base portion having a guide surface that contacts the work material and slides on the work material;
The protective cover according to claim 8, wherein the cover portion is carried on the base portion.   The cover portion is composed of a wall that covers only the outer periphery of the rotary blade and the side surface opposite to the extending direction, and the edge of the wall that covers the outer periphery of the rotary blade in the direction in which the rotary shaft portion extends is 11. The protective cover according to claim 8, wherein substantially the same position as the end portion of the rotary blade in the extending direction or the end edge protrudes from the end portion.   The protective cover according to any one of claims 8 to 11, wherein each of the plurality of ducts is configured to be openable and closable. A housing;
A rotating shaft portion extending from the housing and fitted with a rotary blade;
A mounted portion disposed around the rotating shaft portion;
A power tool comprising: the protective cover according to any one of claims 8 to 12, which is attached to the attached portion and covers the rotary blade. A sub handle attached to the housing;
The housing has one side surface and the other side surface that extend in the radial direction of the rotating shaft portion and are separated from each other in the circumferential direction of the rotating shaft portion,
The power tool according to claim 13, wherein the sub handle is selectively attached to the one side surface and the other side surface.

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