Dust collection accessory and power tool

Abstract

The present invention provides a novel dust collection attachment that can be more easily installed on a power tool. The dust collection attachment has a cover portion, a discharge portion, and at least one locking piece. Among them, in the installation state where the dust collection attachment is installed on the power tool, the cover portion is formed in such a way that the driving axis of the main shaft of the power tool passes through the suction hole and covers at least a part of the periphery of the tool mounting portion of the power tool; the discharge portion is connected to the cover portion and is used to discharge dust from the inside of the cover portion; the at least one locking piece is connected to the cover portion and can be elastically deformed, and has a claw portion that locks to the housing at a specified position on the housing of the power tool.

Description

Technical Field

[0001] The present invention relates to a dust collection accessory and a power tool equipped with the dust collection accessory. Background Art

[0002] A dust collection accessory is known which is mounted on a power tool such as a grinder or a polisher to collect dust generated during the processing operation of a workpiece. Patent Document 1 describes a dust collection accessory having: a suction portion mounted on a housing at a protruding portion of an output shaft; a hose having a front end connected to the suction portion; a discharge portion connected to a rear end of the hose; a locking member for locking the suction portion to the housing; and a changing member capable of mounting the discharge portion at an arbitrary phase about the axis of the housing.

[0003] [Prior Art Documents]

[0004] [Patent Documents]

[0005] Patent Document 1: Japanese Patent Grant Gazette No. 5775795 Summary of the Invention

[0006] [Technical Problem to be Solved by the Invention]

[0007] In the dust collection accessory described in Patent Document 1, although the direction of the hose relative to the housing can be changed by selecting the mounting direction of the changing member relative to the discharge portion, the installation sometimes takes time. Therefore, there is a need for a new type of dust collection accessory that can be more easily mounted on a power tool.

[0008] [Technical Solution for Solving the Technical Problem]

[0009] The present invention can be implemented in the following manner.

[0010] (1) According to the first technical solution of the present invention, a dust collection accessory is provided, which is used to collect the dust generated during the processing operation of a power tool. The power tool has a housing and a main shaft, and the housing extends in the front-rear direction. The main shaft extends along a driving axis, and its lower end protrudes downward from the front end of the housing and constitutes a tool mounting portion for mounting a tip tool, wherein the driving axis extends in the up-down direction orthogonal to the front-rear direction. The dust collection accessory has a cover portion and at least one locking piece, wherein the cover portion has a suction hole; the at least one locking piece is connected to the cover portion. In the installation state where the dust collection accessory is installed on the power tool, the driving axis is configured to pass through the suction hole. In the installation state, the cover portion is formed to cover at least a part of the periphery of the tool mounting portion. The at least one locking piece is configured to be elastically deformable. The at least one locking piece has a claw portion, and the claw portion is configured to be locked to the housing at a specified position of the housing.

[0011] According to this technical solution, since the claw portion of at least one locking piece can lock the dust collection accessory to a specified position of the housing, a new type of dust collection accessory that can be easily installed on a power tool can be provided.

[0012] (2) In the above technical solution, it can be: the at least one locking piece is formed to extend in a direction intersecting the driving axis in the installation state.

[0013] According to this technical solution, the user can lock the dust collection accessory to the power tool at a specified position in the direction intersecting the driving axis of the housing.

[0014] (3) In the above technical solution, it can be: the at least one locking piece is formed to extend in the front-rear direction in the installation state.

[0015] According to this technical solution, since the locking piece extends in the front-rear direction along the housing, the user can lock the dust collection accessory to the power tool at a specified position in the front-rear direction of the housing while making the locking piece correspond to the housing.

[0016] (4) In the above technical solution, it can be: in the installation state, the front end of the at least one locking piece is connected to the cover portion. It can be: in the installation state, the claw portion is provided at the rear part of the at least one locking piece in the front-rear direction.

[0017] According to this technical solution, the user can lock the dust collection accessory to the power tool at the rear part of the front end of the housing.

[0018] (5) In the above technical solution, it may be that: the at least 1 locking piece includes 2 locking pieces. It may be that: the 2 locking pieces are configured to be arranged with a plane including the driving axis therebetween in the mounted state.

[0019] According to this technical solution, since the dust collection accessory can be locked to the power tool at a position with a plane including the driving axis therebetween, the mounted state of the dust collection accessory relative to the power tool can be made stable.

[0020] (6) In the above technical solution, it may be that: the discharge part is a cylindrical member extending in a direction intersecting with the front-rear direction. It may be that: the discharge part further has a first end and a second end, wherein the first end is connected to the cover part and communicates the inside of the cover part with the inside of the discharge part; the second end is an end opposite to the first end and can be connected to a suction device.

[0021] (7) In the above technical solution, it may be that: the cover part, the at least 1 locking piece and the discharge part are formed of one part.

[0022] According to this technical solution, compared with the structure in which the dust collection accessory is formed of multiple parts, the user can more easily mount the dust collection accessory on the power tool.

[0023] According to this technical solution, since the discharge part is formed to extend in a direction intersecting with the front-rear direction which is the extending direction of the housing, it is possible to prevent the discharge part and the suction device connected to the second end of the discharge part from interfering with the use of the power tool.

[0024] (8) In the above technical solution, it may be that: the at least 1 locking piece has a gripping part, and the gripping part extends in a direction different from the protruding direction of the claw part. It may be that: the gripping part is formed to be suitable for being pinched by the user.

[0025] According to this technical solution, the user can pinch the gripping part to elastically deform the locking piece, so that the claw part is disengaged from the housing. Therefore, the user can easily remove the dust collection accessory from the power tool.

[0026] (9) In the above technical solution, it may be: The cover portion includes a bottom and a peripheral wall. Among them, the bottom is provided with the suction holes; the peripheral wall is connected to the bottom and extends in the up and down direction. It may be: The peripheral wall has a first wall and a pair of second walls. Among them, in the installed state, the first wall is disposed in the front in the front-rear direction and extends along the suction holes; the pair of second walls are connected to the first wall and extend rearward from the first wall. It may be: The discharge portion is connected to one of the pair of second walls. It may also be: The discharge portion is formed to extend in a direction intersecting the front-rear direction. It may be: The at least one locking piece is a pair of locking pieces, and the pair of locking pieces are formed such that the front ends are connected to the pair of second walls and extend rearward in the front-rear direction, and are arranged across the plane including the drive axis. It may be: The claw portion is provided on the pair of locking pieces and is formed to protrude toward the plane including the drive axis in the installed state. It may be: The at least one locking piece further has a gripping portion, and the gripping portion is provided behind the claw portion, protrudes rearward in the front-rear direction, and is adapted to be pinched by a user.

[0027] According to this method, since the dust collection accessory can be locked to the power tool at a position across the plane including the drive axis, the installation state of the dust collection accessory relative to the power tool can be made stable. In addition, since the discharge portion is formed to extend in a direction intersecting the front-rear direction which is the extending direction of the housing, the suction device connected to the discharge portion can be prevented from interfering with the use of the power tool. Moreover, since the locking piece has a gripping portion provided behind the claw portion and protruding rearward, the user can pinch the gripping portion from the rear to remove the dust collection accessory from the power tool.

[0028] (10) In the above technical solution, it may be: The cover portion has a convex portion or a concave portion. It may be: The convex portion or the concave portion is configured to be locked to the housing at a portion different from the portion where the claw portion is locked when the claw portion is locked to the housing.

[0029] According to this technical solution, compared with the structure of the cover portion without a convex portion or a concave portion, the installation state of the dust collection accessory relative to the power tool can be made more stable.

[0030] (11) According to the second technical solution of the present invention, there is provided a power tool configured to be able to install the dust collection accessory. In the power tool, the housing has a locking portion and a guiding portion, where the locking portion is configured for the claw portion to be locked; the guiding portion is configured to guide the claw portion to the locking portion.

[0031] According to this technical solution, the guiding part can be used to guide the claw part of the dust collection accessory towards the locking part of the housing. Therefore, the user can more easily install the power tool on the dust collection accessory.

[0032] (12) In the above technical solution, it can be: the housing has a concave part or a convex part, and the concave part or the convex part is provided at other parts different from the locking part. It can be: the concave part or the convex part is configured to make the convex part provided on the cover part or the concave part provided on the cover part lock when the claw part locks to the locking part.

[0033] According to this technical solution, compared with the structure of the housing without a concave part or a convex part, the installation state of the dust collection accessory relative to the power tool can be made more stable.

[0034] (13) In the above technical solution, it can be: the locking part is provided behind the guiding part. It can also be: the locking part is formed by the side wall of the housing being recessed. It can be: the guiding part includes a groove part and an inclined surface. It can be: the groove part is formed to be provided on the side wall and extend along the up and down direction. It can be: the inclined surface is formed to be provided between the groove part and the locking part in the front and back direction, and inclines from the groove part towards the locking part in a direction away from the plane including the driving axis.

[0035] According to this technical solution, the user can make the claw part move in the up and down direction corresponding to the groove part, and then make it move along the inclined surface provided behind the groove part, thereby enabling the claw part to lock to the locking part. Therefore, the user can further easily install the dust collection accessory on the power tool.

[0036] (14) In the above technical solution, it can be: the power tool has a motor, and the motor is housed in the front end part of the housing and has an output shaft extending parallel to the main shaft.

[0037] According to this technical solution, since the motor is housed in the front end part of the housing, compared with the structure in which the motor is housed in a part different from the front end part of the housing, the front end part can be made larger. Therefore, the front end part can be used to easily install the dust collection accessory on the power tool, and other parts of the housing can be made smaller.

[0038] The technology of the present invention can also be realized in various ways other than the dust collection accessory and the power tool. For example, it can also be realized by means such as a power tool for installing a dust collection accessory, a method for disassembling and assembling a dust collection accessory relative to a power tool, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1It is a perspective view of a vibrating tool equipped with a dust collection attachment and a tip tool.

[0040] Figure 2 It is a schematic longitudinal sectional view of a vibrating tool equipped with a dust collection attachment and a tip tool.

[0041] Figure 3 It is a bottom view of the vibrating tool.

[0042] Figure 4 It is a view showing the lower end of the front end of the housing.

[0043] Figure 5 It is a perspective view of the dust collection attachment.

[0044] Figure 6 It is another perspective view of the dust collection attachment.

[0045] Figure 7 It is a top view of the dust collection attachment.

[0046] Figure 8 It is a bottom view of the dust collection attachment.

[0047] Figure 9 It is an enlarged view of the locking piece.

[0048] Figure 10 It is a view for explaining the installation method of the dust collection attachment.

[0049] Figure 11 It is an enlarged perspective view of the lower end of the housing.

[0050] Figure 12 It is a perspective view showing the situation where the dust collection attachment is installed on the vibrating tool.

[0051] Figure 13 It is another view showing the situation where the dust collection attachment is installed on the vibrating tool.

[0052] Figure 14 It is a bottom view showing the positional relationship between the vibrating tool equipped with the dust collection attachment and the hose connected to the dust collection attachment.

[0053] [Explanation of reference numerals]

[0054] 1: Vibration tool; 2: Outer housing; 3: Inner housing; 5: Spindle; 10: Housing; 11: Front end; 12: Rear end; 13: Central part; 41: Motor; 45: Transmission mechanism; 47: Clamping mechanism; 51: Tool mounting part; 61: Tip tool; 62: Operating rod; 63: Battery mounting part; 64: Battery pack; 70: Dust collection accessory; 75: Discharge part; 76: First end; 77: Second end; 80: Cover part; 81: Suction hole; 82: Bottom; 84: Peripheral wall; 85: Front wall; 86: Side wall; 87: Rib; 89: Protrusion; 90: Locking piece; 91: Claw part; 92: Gripping part; 105: Upper part; 110: Lower end; 120: Peripheral wall; 121: Front wall; 122: Side wall; 123: Rear wall; 125: Groove part; 126: Connecting part; 127: Inclined surface; 128: Flat surface; 131: Locking part; 132: Front surface; 133: Lower surface; 135: Recess; 140: Bottom; 141: First lower surface; 142: Second lower surface; 143: Inclined surface; 151: Front part; 152: Rear part; 200: Hose; 411: Output shaft; 471: Clamping shaft; P: Flat surface; A1: Driving axis; A2: Rotation axis; A3: Central axis; Ar1, Ar2: Arrows indicating the mounting direction. Detailed implementation

[0055] <Implementation mode>

[0056] Refer to Figures 1 to 14 , a vibration tool (also called a multi-functional tool) 1 according to an embodiment and a dust collection accessory 70 that can be mounted on the vibration tool 1 will be described. The vibration tool 1 is an example of a power tool that drives a tip tool 61 to perform a machining operation on a workpiece. In Figure 1 , Figure 2 and Figure 14 shown, a sanding pad as an example of the tip tool 61 is mounted on the vibration tool 1. The sanding pad is a tip tool for grinding and polishing a workpiece. In addition, in Figure 14 , the sanding pad is shown simplified and in dashed lines.

[0057] <Structure of the vibration tool>

[0058] First, the schematic structure of the vibration tool 1 will be described. As Figures 1 to 3 shown, the vibration tool 1 has an elongated housing 10. As Figure 2As shown, in one end portion in the major axis direction of the housing 10, a long spindle 5 and a motor 41 as a drive source are accommodated. The spindle 5 is configured such that its major axis intersects the major axis of the housing 10. In the present embodiment, the major axis of the spindle 5 is substantially orthogonal to the major axis of the housing 10. One end portion in the major axis direction of the spindle 5 protrudes from the housing 10 and is exposed to the outside. This one end portion constitutes a tool mounting portion 51 to which a tip tool 61 can be detachably attached. In addition, the other end portion in the major axis direction of the housing 10 is configured to be able to detachably attach a battery pack 64 for supplying power to the motor 41. The vibrating tool 1 is configured to reciprocally rotate the spindle 5 around the drive axis A1 within a specified angular range by the power of the motor 41, thereby causing the tip tool 61 to oscillate.

[0059] In addition, in the following description, regarding the direction of the vibrating tool 1, the extending direction of the drive axis A1 is defined as the vertical direction. In the vertical direction, the tool mounting portion 51 side of the spindle 5 is defined as the lower side, and the opposite side is defined as the upper side. In addition, the direction orthogonal to the drive axis A1 and corresponding to the major axis direction of the housing 10 is defined as the front-rear direction. In the front-rear direction, the one end portion side of the housing 10 in which the spindle 5 is accommodated is defined as the front side, and the other end portion side where the battery pack 64 is mounted is defined as the rear side. In addition, the direction orthogonal to the vertical direction and the front-rear direction is defined as the left-right direction. The left-right direction is also the width direction of the housing 10.

[0060] Hereinafter, the detailed structure of the vibrating tool 1 will be described.

[0061] The housing 10 is configured as a so-called vibration-proof housing. As Figure 2 shown, the housing 10 includes a long external housing 2 and a long internal housing 3, wherein the external housing 2 forms the outer contour of the vibrating tool 1; the internal housing 3 is accommodated in the external housing 2. The external housing 2 and the internal housing 3 are elastically connected. In addition, the housing 10 includes a front end portion 11, a rear end portion 12, and a central portion 13 connecting the front end portion 11 and the rear end portion 12 in the front-rear direction.

[0062] The front end portion 11 (specifically, the front end portion of the external housing 2) is formed in a substantially rectangular box shape. In Figure 4 although the right side surface of the lower end portion 110 of the front end portion 11 is shown, the left side surface of the lower end portion 110 has the same structure as the right side surface. The lower end portion 110 of the front end portion 11 is a portion for mounting a dust collection accessory 70. The mounting of the dust collection accessory 70 will be described in detail later. In the present embodiment, compared with the upper portion 105 which is the portion above the lower end portion 110, the lower end portion 110 is formed smaller in the left-right direction and the front-rear direction. That is, the front end of the lower end portion 110 is located behind the front end of the upper portion 105, and the length of the lower end portion 110 in the left-right direction is formed shorter than the length of the upper portion 105 in the left-right direction.

[0063] As Figure 3 and Figure 4 shown, the lower end portion 110 includes a peripheral wall 120 and a bottom portion 140. Among them, the peripheral wall 120 surrounds the drive axis A1; the bottom portion 140 is connected to the peripheral wall 120 and extends substantially in the front-rear direction and the left-right direction. In addition, the lower end portion 110 includes a front portion 151 provided with a tool mounting portion 51 in the front-rear direction and a rear portion 152 located behind the front portion 151. In the present embodiment, the lower end portion 110 has a shape that is substantially symmetric with respect to a virtual plane P (refer to Figure 3 ), where the plane P includes the drive axis A1 and is orthogonal to the left-right direction.

[0064] The peripheral wall 120 includes an arc-shaped front wall 121, a pair of left and right side walls 122, and a rear wall 123. Among them, the front wall 121 is provided at the front end; the pair of side walls 122 are connected to the front wall 121 and extend rearward from the front wall 121; the rear wall 123 is connected to the side walls 122 and is orthogonal to the front-rear direction. The side walls 122 are formed longer in the up-down direction in the rear portion 152 than in the front portion 151, and the rear portion 152 protrudes downward.

[0065] A groove portion 125 is provided on the side wall 122. The groove portion 125 is a portion for guiding the claw portion 91 (described in detail later) of the dust collection accessory 70 to a specified installation position. The groove portion 125 is provided at a position corresponding to the rear portion 152 of the side wall 122. The groove portion 125 is formed to extend in the up-down direction from the lower end to the upper end of the side wall 122.

[0066] A locking portion 131 is provided behind the groove portion 125. The locking portion 131 is a portion configured to lock the claw portion 91 of the dust collection accessory 70. In the present embodiment, the locking portion 131 is a recess formed by the side wall 122 being recessed, and is defined by a front surface 132 and a lower surface 133.

[0067] In the present embodiment, a connecting portion 126 is further provided between the groove portion 125 and the locking portion 131, and the connecting portion 126 connects the groove portion 125 and the locking portion 131. The connecting portion 126 includes an inclined surface 127 and a flat surface 128, where the inclined surface 127 inclines away from the plane P; the flat surface 128 connects the inclined surface 127 and the locking portion 131 (front surface 132).

[0068] At the connecting portion of the front wall 121 and the pair of side walls 122, a pair of concave portions 135 are also provided. The concave portion 135 is a portion formed by recessing the connecting portion of the front wall 121 and the side wall 122. The concave portion 135 is configured to engage with the convex portion 89 (described in detail later) of the dust collection accessory 70. In the present embodiment, the front end of the concave portion 135 is open so as to receive the convex portion 89 from the front.

[0069] The bottom 140 includes a first lower surface 141, a second lower surface 142, and an inclined surface 143, wherein the first lower surface 141 corresponds to the front portion 151; the second lower surface 142 corresponds to the rear portion 152; and the inclined surface 143 connects the first lower surface 141 and the second lower surface 142. The second lower surface 142 is disposed below the first lower surface 141. The inclined surface 143 is a surface inclined from the front toward the rear.

[0070] As Figure 2 shown, the front end portion 11 (specifically, the front end portion 11 of the inner housing 3) houses the main shaft 5, the motor 41, the transmission mechanism 45, and the clamping mechanism 47.

[0071] The main shaft 5 is a substantially cylindrical elongated member configured to be rotatable about the drive axis A1. The main shaft 5 is housed in the lower part of the front portion of the front end portion 11. The main shaft 5 is supported by bearings so as to be rotatable about the drive axis A1. As described above, the lower end portion of the main shaft 5 protrudes downward from the front end portion 11 and is configured as a tool mounting portion 51 capable of mounting the tip tool 61. In the present embodiment, the tool mounting portion 51 is formed in a flange shape protruding radially outward with respect to the drive axis A1.

[0072] The motor 41 has a stator, a rotor, and an output shaft 411. The motor 41 is housed behind the main shaft 5. In the present embodiment, the rotation axis A2 of the output shaft 411 is located directly behind the drive axis A1 of the main shaft 5 and is configured to extend in parallel with the drive axis A1.

[0073] The transmission mechanism 45 is a known mechanism configured to transmit the rotational motion of the output shaft 411 to the main shaft 5 and to reciprocate the main shaft 5 within a predetermined angular range about the drive axis A1.

[0074] The clamping mechanism 47 is a mechanism configured to fix the tip tool 61 to the tool mounting portion 51 by the clamping shaft 471 and to enable the tip tool 61 to rotate integrally with the main shaft 5. An operating lever 62 is provided on the upper portion 105 of the front end portion 11, and the operating lever 62 is rotatable about the drive axis A1. By operating the operating lever 62, the user can cause the clamping mechanism 47 to act to fix the tip tool 61 to the tool mounting portion 51 or to release the fixation.

[0075] The rear end portion 12 (specifically, the rear end portion of the outer housing 2) is a tubular portion whose cross-sectional area increases rearward. A battery mounting portion 63 is provided on the rear part of the rear end portion 12. The battery mounting portion 63 slidably engages with the battery pack 64 (refer to Figure 1 ) and is configured to be electrically connectable to the battery pack 64.

[0076] The central portion 13 (specifically, the central portion of the outer housing 2) is a tubular portion with a substantially uniform outer diameter and is formed to extend in the front-rear direction. The central portion 13 constitutes a gripping portion that can be gripped by the user. The central portion 13 is formed thinner than the front end portion 11 and the rear end portion 12.

[0077] <Structure of the dust collection accessory>

[0078] Next, the dust collection accessory 70 will be described. The dust collection accessory 70 is a component configured to collect the dust generated during the processing operation of the vibrating tool 1. The dust collection accessory 70 can be detached from and attached to the housing 10 of the vibrating tool 1. In the present embodiment, the dust collection accessory 70 can be detached from and attached to the lower end portion 110 of the front end portion 11 of the housing 10.

[0079] As Figures 5 to 8 shown, the dust collection accessory 70 includes a cover portion 80, a discharge portion 75, and a locking piece 90. The cover portion 80 has a suction hole 81; the discharge portion 75 is configured to discharge the dust from inside the cover portion 80; the locking piece 90 has a claw portion 91 for locking the dust collection accessory 70 to the housing 10. In the present embodiment, the cover portion 80, the discharge portion 75, and the locking piece 90 are formed of a single component. The dust collection accessory 70 can be formed of, for example, synthetic resin or metal.

[0080] In the following description, the direction of the dust collection accessory 70 is defined based on the orientation when the dust collection accessory 70 is attached to the vibrating tool 1 (mounted state). The dust collection accessory 70 is attached to the housing 10 such that the drive axis A1 passes through the suction hole 81. In the mounted state, the cover portion 80 is located on the front side in the front-rear direction, and the locking piece 90 is located on the rear side of the cover portion 80.

[0081] Hereinafter, the detailed structure of each part of the dust collection accessory 70 will be described.

[0082] The cover portion 80 is a portion formed to cover at least a part of the periphery of the tool mounting portion 51. In the present embodiment, as Figure 2As shown, the cover portion 80 covers the entire periphery of the tool mounting portion 51. The cover portion 80 includes a bottom portion 82 and a peripheral wall 84. The bottom portion 82 is provided with a suction hole 81. The peripheral wall 84 is connected to the bottom portion 82 and extends in the vertical direction. The bottom portion 82 is formed to extend substantially in the front-rear direction and the left-right direction. The suction hole 81 is a substantially circular hole. The diameter of the suction hole 81 is larger than the outer diameter of the tool mounting portion 51. The suction hole 81 is arranged on the bottom portion 82 in such a manner that the drive axis A1 passes through the suction hole 81 in the mounted state. In the present embodiment, in the mounted state, the drive axis A1 passes through the approximate center of the suction hole 81. That is, the dust collection accessory 70 is mounted on the vibrating tool 1 in such a manner that the central axis A3 of the suction hole 81 is substantially aligned with the drive axis A1 (refer to Figure 14 ).

[0083] The peripheral wall 84 includes a front wall 85 and a pair of left and right side walls 86. The front wall 85 is provided in the front. The pair of left and right side walls 86 are connected to the front wall 85 and extend rearward from the front wall 85. The front wall 85 is an arcuate portion extending along the suction hole 81. The cross-sectional shape of the front wall 85 in the direction orthogonal to the vertical direction is substantially arcuate. Therefore, the cross-sectional shape of the entire peripheral wall 84 in the direction orthogonal to the vertical direction is formed into a substantially U shape.

[0084] In the present embodiment, the cover portion 80 further has a rib 87. The rib 87 is a wall portion provided at a position facing the front wall 85 with the suction hole 81 therebetween and extending along the suction hole 81. The left and right ends of the rib 87 are respectively connected to the pair of left and right side walls 86. The length of the rib 87 in the vertical direction is shorter than that of the front wall 85. The rib 87 is formed such that the upper end of the rib 87 substantially abuts against the first lower surface 141 of the housing 10 in the mounted state.

[0085] The discharge portion 75 is a cylindrical member for discharging dust from the inside of the cover portion 80. The discharge portion 75 has a first end portion 76 and a second end portion 77. The first end portion 76 is connected to the cover portion 80. The second end portion 77 is the end portion opposite to the first end portion 76. In the present embodiment, the first end portion 76 is connected to the right side wall 86 of the pair of left and right side walls 86. The first end portion 76 communicates the inside (internal space) of the cover portion 80 with the inside (internal space) of the discharge portion 75 via an opening provided in the side wall 86. The second end portion 77 can be connected to a tubular member such as a hose, for example. The discharge portion 75 can be connected to a suction device such as a cleaner via this tubular member.

[0086] In the present embodiment, the entire discharge portion 75 is formed into a substantially conical cylindrical shape in which the inner diameter of the second end portion 77 is larger than the inner diameter of the first end portion 76. In addition, the discharge portion 75 is formed to extend from the right side wall 86 toward the upper right rear.

[0087] The locking piece 90 is an elastically deformable (flexible) part connected to the cover part 80. In the present embodiment, the locking piece 90 is formed in a long strip shape (thin plate shape). The locking piece 90 is respectively connected to a pair of left and right side walls 86. That is, the dust collection accessory 70 has two locking pieces 90. The locking piece 90 is formed to extend rearward from the rear end of the side wall 86. In addition, the pair of locking pieces 90 face each other across a virtual plane P, where the plane P contains the central axis A3 (driving axis A1) of the suction hole 81 and is orthogonal to the left-right direction. The distance between the two locking pieces 90 in the left-right direction is approximately equal to or slightly larger than the width of the lower end portion 110 of the front end portion 11 of the vibration tool 1. The two locking pieces 90 can be elastically deformed (flexed) in the direction (left-right direction) in which they face each other. In addition, in the present embodiment, the thicknesses of the locking piece 90 and the cover part 80 are formed so as not to protrude in the front-rear direction and the left-right direction from the upper part 105 of the front end portion 11 of the housing 10 in the mounted state.

[0088] A claw portion 91 and a gripping portion 92 are provided on the locking piece 90. The claw portion 91 is a convex portion for locking the dust collection accessory 70 to the housing 10. In the present embodiment, the claw portion 91 is provided at the rear portion of the locking piece 90. In addition, in the present embodiment, the claw portion 91 provided on the right locking piece 90 of the pair of locking pieces 90 protrudes leftward, and the claw portion 91 provided on the left locking piece 90 protrudes rightward. That is, the pair of claw portions 91 protrude toward the peripheral wall 120 of the housing 10 in the mounted state. Moreover, the pair of claw portions 91 face each other across the plane P.

[0089] The gripping portion 92 is a portion extending in a direction different from the protruding direction of the claw portion 91. The gripping portion 92 has a shape suitable for being pinched by a user. In the present embodiment, the gripping portion 92 is provided at the rear end of the locking piece 90. In the mounted state, the gripping portion 92 extends rearward of the claw portion 91 such that the rear end of the gripping portion 92 is located behind the rear wall 123. The pair of gripping portions 92 face each other across the plane P.

[0090] The dust collection accessory 70 of the present embodiment further has a pair of convex portions 89. The convex portions 89 are configured to be locked to the housing 10 at another portion different from the portion where the claw portion 91 is locked to the housing 10 when the claw portion 91 is locked to the housing 10. In the present embodiment, the pair of convex portions 89 are provided at the portion where the front wall 85 of the cover part 80 is connected to the pair of left and right side walls 86. The convex portions 89 are portions protruding inward from the cover part 80 at the connection portion. The pair of convex portions 89 face each other across the plane P. The convex portions 89 are configured to be locked to the concave portion 135 when the claw portion 91 is locked to the locking portion 131.

[0091] <Method for disassembling and assembling the dust collection accessory>

[0092] Use Figures 10 to 14, a method for installing the dust collection attachment 70 to the housing 10 of the vibration tool 1 and a method for removing the dust collection attachment 70 from the vibration tool 1 will be described.

[0093] When installing the dust collection attachment 70 to the vibration tool 1, first, the user positions the dust collection attachment 70 below the lower end portion 110 of the housing 10. The user moves a pair of claw portions 91 upward along the groove portion 125 as shown by the dashed arrow Ar1 in Figure 10 , and then moves it rearward along the inclined surface 127. When the locking piece 90 moves rearward along the inclined surface 127, it elastically deforms in a direction away from the plane P. Then, the claw portion 91 moves over the plane 128 and locks to the locking portion 131. In the present embodiment, the forward movement of the claw portion 91 is restricted by the front surface 132 of the defined locking portion 131. In addition, the downward movement of the claw portion 91 is restricted by the lower surface 133 of the defined locking portion 131.

[0094] When the claw portion 91 moves along the groove portion 125 and locks to the locking portion 131 of the housing 10, the convex portion 89 of the cover portion 80 locks to the concave portion 135 of the housing 10. Specifically, when the claw portion 91 moves upward along the groove portion 125, the convex portion 89 moves upward as shown by the dashed arrow Ar2 in Figure 10 and is located in front of the concave portion 135. Next, when the claw portion 91 moves rearward along the inclined surface 127, the convex portion 89 moves to the concave portion 135 provided near the portion where the front wall 121 and the side wall 122 are connected. Then, when the claw portion 91 moves over the plane 128 and locks to the locking portion 131, the convex portion 89 locks to the concave portion 135.

[0095] At this time, the front wall 85 of the cover portion 80 abuts against the front wall 121 of the lower end portion 110 of the housing 10. In addition, the pair of left and right side walls 86 of the cover portion 80 abut against the pair of left and right side walls 122 of the lower end portion 110 (see Figure 14 ). Moreover, the rib 87 of the cover portion 80 abuts against the first lower surface 141 of the lower end portion 110 at a position behind the tool mounting portion 51. In this way, when the claw portion 91 locks to the locking portion 131, the periphery of the tool mounting portion 51 is covered by the cover portion 80.

[0096] After the user installs the dust collection attachment 70 to the housing 10, the user can install the tip tool 61 to the tool mounting portion 51 and install, for example, the hose 200 to the second end portion 77 (see Figure 14) As described above, the discharge portion 75 is formed so as to extend from the right side wall 86 toward the upper right rear. Therefore, the hose 200 connected to the discharge portion 75 extends in a direction away from the central portion 13. When the suction device connected to the hose 200 is operated, the dust generated during the processing operation of the vibration tool 1 is sucked from the suction hole 81 into the hood portion 80 and is sucked (discharged) to the outside via the discharge portion 75.

[0097] When the dust collecting attachment 70 is removed from the housing 10, the user removes the tip tool 61 from the tool mounting portion 51, and then pulls the rear end portion of the locking piece 90 in the left-right direction away from the housing 10 side. Thereby, the locking piece 90 is elastically deformed, and the claw portion 91 can be disengaged from the locking portion 131. In the present embodiment, the user can disengage the claw portion 91 from the locking portion 131 by pinching the gripping portion 92 and pulling it in the left-right direction away from the housing 10 side. Thereafter, by moving the claw portion 91 along the groove portion 125, the dust collecting attachment 70 can be removed from the housing 10.

[0098] <Effect>

[0099] According to the dust collecting attachment 70 and the vibration tool 1 of the present embodiment described above, the following effects can be achieved.

[0100] (A1) The dust collecting attachment 70 of the present embodiment has a hood portion 80 and a locking piece 90, wherein the hood portion 80 has a suction hole 81; the locking piece 90 is connected to the hood portion 80. The locking piece 90 is configured to be elastically deformable. In addition, the locking piece 90 has a claw portion 91, and the claw portion 91 is configured to be locked to the housing 10 at a predetermined position of the housing 10. Therefore, the user can elastically deform the locking piece 90 and lock the dust collecting attachment 70 to the predetermined position of the housing 10 by the claw portion 91. Therefore, according to the present embodiment, a new type of dust collecting attachment 70 that can be easily attached to the vibration tool 1 can be provided.

[0101] (A2) The locking piece 90 is formed to extend in a direction intersecting the driving axis A1 of the main shaft 5 in the mounted state. Therefore, the user can lock the dust collecting attachment 70 to the vibration tool 1 at a predetermined position in the direction intersecting the driving axis A1 of the housing 10.

[0102] (A3) The locking piece 90 is formed to extend in the direction (front-rear direction) in which the housing 10 extends in the mounted state. Therefore, the user can lock the dust collecting attachment 70 to the vibration tool 1 at a predetermined position in the front-rear direction of the housing 10 while making the locking piece 90 correspond to the housing 10.

[0103] (A4) The front end of the locking piece 90 is connected to the cover portion 80. In the installed state, the claw portion 91 is provided at the rear portion 152 of the locking piece 90. Therefore, the user can lock the dust collecting accessory 70 to the vibrating tool 1 on the rear portion of the front end portion 11 of the housing 10.

[0104] (A5) The dust collecting accessory 70 has a pair of locking pieces 90, and the pair of locking pieces 90 are arranged across the plane P in the installed state. Therefore, since the dust collecting accessory 70 can be locked to the vibrating tool 1 at positions across the plane P, the installed state of the dust collecting accessory 70 relative to the vibrating tool 1 can be made stable.

[0105] (A6) Since the discharge portion 75 is formed so as to extend in a direction intersecting the front-rear direction which is the extending direction of the housing 10, it is possible to prevent the discharge portion 75, the hose connected to the second end portion 77 of the discharge portion 75, and the suction device from interfering with the use of the vibrating tool 1.

[0106] (A7) The dust collecting accessory 70 is formed of one piece. Therefore, if the claw portion 91 is locked to the locking portion 131, the installation of the dust collecting accessory 70 relative to the vibrating tool 1 is completed. Therefore, compared with a structure in which the dust collecting accessory 70 has a plurality of parts, the user can more easily install the dust collecting accessory 70 on the vibrating tool 1.

[0107] (A8) The locking piece 90 has a gripping portion 92 which extends in a direction different from the protruding direction of the claw portion 91. Therefore, the user can pinch the gripping portion 92 to disengage the claw portion 91 from the housing 10. Therefore, the user can easily remove the dust collecting accessory 70 from the vibrating tool 1.

[0108] (A9) The gripping portion 92 is provided behind the claw portion 91 and is formed to protrude rearward. In addition, in the installed state, the gripping portion 92 is formed such that the rear end of the gripping portion 92 is located behind the rear wall 123 of the housing 10. Therefore, the user can easily pinch the gripping portion 92. In addition, since the gripping portion 92 protrudes rearward in the installed state, it is possible to prevent the gripping portion 92 from interfering with the use of the vibrating tool 1.

[0109] (A10) The cover portion 80 also has a convex portion 89 protruding toward the plane P. The convex portion 89 is configured to be locked to the housing 10 at another portion different from the portion where the claw portion 91 is locked to the housing 10. Therefore, compared with a structure without the convex portion 89, the installed state of the dust collecting accessory 70 relative to the vibrating tool 1 can be made more stable.

[0110] (A11) In the present embodiment, the front end of the locking piece 90 is connected to the cover portion 80, and the claw portion 91 is provided at the rear portion of the locking piece 90. Moreover, the convex portion 89 is provided at the front portion of the cover portion 80 so as to protrude toward the plane P. Therefore, the front portion and the rear portion of the dust collecting accessory 70 are respectively locked to the housing 10 by the convex portion 89 and the claw portion 91. Therefore, the mounting state of the dust collecting accessory 70 with respect to the vibrating tool 1 can be made further stable.

[0111] (A12) In the present embodiment, the housing 10 of the vibrating tool 1 has a locking portion 131 for locking the claw portion 91 and a groove portion 125 for guiding the claw portion 91 toward the locking portion 131. Therefore, the user can move the claw portion 91 along the groove portion 125 and lock the claw portion 91 to the locking portion 131 of the housing 10. Therefore, compared with the structure without the groove portion 125, the vibrating tool 1 can be more easily mounted on the dust collecting accessory 70.

[0112] (A13) In the present embodiment, the locking portion 131 is provided behind the groove portion 125 and is configured as a recess formed by the side wall 122 of the housing 10 being recessed. In addition, the groove portion 125 is formed to be provided on the side wall 122 of the housing 10 and extends in the vertical direction. An inclined surface 127 is also provided on the housing 10, which inclines away from the plane P from the groove portion 125 toward the locking portion 131. Therefore, the user can move the claw portion 91 from bottom to top in correspondence with the groove portion 125 and then move it along the inclined surface 127, thereby elastically deforming the locking piece 90 and locking the claw portion 91 to the recess (locking portion 131) provided behind the inclined surface 127. Therefore, the user can more easily mount the vibrating tool 1 on the dust collecting accessory 70.

[0113] (A14) The housing 10 has a recess 135 provided at another portion different from the portion of the locking portion 131. The recess 135 is configured such that when the claw portion 91 is locked to the locking portion 131, the convex portion 89 provided on the cover portion 80 is locked to the recess 135. Therefore, compared with the structure of the housing 10 without the recess 135, the mounting state of the dust collecting accessory 70 with respect to the vibrating tool 1 can be made further stable.

[0114] (A15)In the vibrating tool 1, the motor 41 and the main shaft 5 are housed in the front end portion 11 of the housing 10. Therefore, compared with a structure in which the motor 41 is housed in a portion different from the front end portion 11 of the housing 10, the front end portion 11 can be formed larger. Therefore, the dust collection accessory 70 can be easily attached to the vibrating tool 1 by using the front end portion 11, and other portions of the housing 10 can be formed smaller. Therefore, for example, a vibrating tool 1 can be provided in which the central portion 13 can be formed thinner and is easier for the user to grip. Moreover, since the output shaft 411 of the motor 41 is disposed behind the driving axis A1 of the main shaft 5 and extends parallel to the driving axis A1, for example, compared with a structure in which the output shaft 411 intersects the driving axis A1, the front end portion 11 is not formed too large. Therefore, a vibrating tool 1 that is easy to attach the dust collection accessory 70 and has good operability can be provided.

[0115] (A16)Compared with the upper portion 105, the lower end portion 110 of the front end portion 11 of the housing 10 is formed smaller in the left-right direction and the front-rear direction. In addition, the cover portion 80 and the locking piece 90 are formed to have a thickness that does not protrude in the front-rear direction and the left-right direction more than the upper portion 105 in the mounted state. Therefore, it is possible to prevent the dust collection accessory 70 from interfering with the use of the vibrating tool 1. In addition, the appearance of the vibrating tool 1 with the dust collection accessory 70 attached can be improved.

[0116] <Corresponding relationship>

[0117] The corresponding relationships between the structural elements of the above-described embodiment and the structural elements of the technology of the present invention are shown below.

[0118] The vibrating tool 1 is an example of a "power tool". The tip tool 61 is an example of a "tip tool". The housing 10 (outer housing 2) and the front end portion 11 are examples of a "housing" and a "front end portion". The tool mounting portion 51 and the main shaft 5 are examples of a "tool mounting portion" and a "main shaft". The driving axis A1 is an example of a "driving axis". The motor 41 and the output shaft 411 are examples of a "motor" and an "output shaft". The groove portion 125, the connecting portion 126, the inclined surface 127, and the flat surface 128 are examples of a "guide portion", respectively. The locking portion 131 is an example of a "locking portion". The concave portion 135 is an example of a "concave or convex portion of the housing". The flat surface P is an example of a "plane including the driving axis". The side wall 122 is an example of a "side wall of the housing".

[0119] The dust collection attachment 70 is an example of a "dust collection attachment". The hood portion 80 is an example of a "hood portion". The suction hole 81 is an example of a "suction hole". The discharge portion 75 is an example of a "discharge portion". The first end portion 76 and the second end portion 77 are examples of a "first end portion" and a "second end portion". The locking piece 90 is an example of "at least one locking piece". The claw portion 91 and the gripping portion 92 are examples of a "claw portion" and a "gripping portion". The convex portion 89 is an example of "a convex portion or a concave portion of the dust collection attachment". The bottom portion 82 is an example of a "bottom portion". The peripheral wall 84 is an example of a "peripheral wall". The front wall 85 is an example of a "first wall", and the side wall 86 is an example of a "second wall".

[0120] <Other embodiments>

[0121] In the above embodiment, the number of the locking pieces 90 provided on the dust collection attachment 70 may be one or three or more.

[0122] On the dust collection attachment 70, the extending direction of the locking piece 90 may be other directions. For example, the locking piece 90 may be connected to the front end of the side wall 86 of the hood portion 80 and formed to extend forward. In this case, the claw portion 91 may be configured to be locked to the vicinity of the front end of the lower end portion 110 of the housing 10. Additionally, for example, the locking piece 90 may be formed to extend in the vertical direction. In this case, a locking portion for locking the claw portion 91 may be provided on the upper portion 105 of the housing 10. Or, the locking piece 90 may be formed to extend in the left - right direction. In this case, a locking portion for locking the claw portion 91 may be provided on the side wall 122 of the housing 10. The dust collection attachment 70 is not limited to the installation direction shown in the above embodiment, and may also be installed on the housing 10 by moving it along the housing 10 in a manner from top to bottom, from left to right, from right to left, from back to front, etc. according to the structure of each part of the dust collection attachment.

[0123] The claw portion 91 may be configured to be locked to other parts of the housing 10 and is not limited to the locking portion 131. For example, the claw portion 91 may be configured to protrude toward the corner of the rectangular housing 10 in the installed state and be locked to the corner.

[0124] The locking portion 131 only needs to be configured to lock the claw portion 91 and may not be configured as a concave portion. For example, the locking portion 131 may be configured as a convex portion that protrudes from the side wall 86 and has a front surface that restricts the movement of the claw portion 91 and a lower surface that restricts the movement in the vertical direction.

[0125] In the above embodiment, the housing 10 may not have the groove portion 125 and the connecting portion 126 (the inclined surface 127 and the flat surface 128). Additionally, when the housing 10 has the groove portion 125, the groove portion 125 may be formed to extend in other directions such as the front - back direction and is not limited to the vertical direction.

[0126] The housing 10 may not have a flat surface 128 between the groove portion 125 and the locking portion 131. Additionally, the inclined surface 127 between the groove portion 125 and the locking portion 131 may be configured in other shapes that gradually move away from the flat surface P from the groove portion 125 toward the locking portion 131, and is not limited to a flat shape.

[0127] The dust collection accessory 70 may have a concave portion instead of the convex portion 89. In this case, the housing 10 may have a convex portion instead of the concave portion 135. Additionally, the positions of the convex portion 89 and the concave portion may be other positions and are not limited to the positions in the above-described embodiment.

[0128] The locking piece 90 may not have a gripping portion 92. Since the locking piece 90 will elastically deform, in this structure, when the user moves any position of the locking piece 90 in a direction away from the housing 10, the dust collection accessory 70 can be detached from the vibrating tool 1. Additionally, when the gripping portion 92 is provided on the locking piece 90, the gripping portion 92 may not be provided at the rear end of the locking piece 90. For example, the gripping portion 92 may be provided to protrude outward in the left - right direction from the locking piece 90.

[0129] Regarding the cover portion 80 and the suction hole 81, as long as the cover portion 80 is formed to cover at least a part of the periphery of the tool mounting portion 51, its shape is not limited to the above - described embodiment. For example, the cover portion 80 may be formed as a rectangle having the suction hole 81. The shape of the suction hole 81 may be other shapes such as an ellipse, a rectangle, etc.

[0130] As long as the first end portion 76 of the discharge portion 75 is connected to the cover portion 80, for example, it may be connected to the left side wall 86 among the pair of left - right side walls 86, or may be connected to the front wall 85.

[0131] The discharge portion 75 may extend in the up - down direction. For example, the discharge portion 75 may extend and be formed such that the first end portion 76 is connected to the side wall 86 and the second end portion is located below the side wall 86.

[0132] The shape of the discharge portion 75 is not limited to the shape in the above - described embodiment. For example, the discharge portion 75 may be formed in a flat shape, or a flat - shaped tube may be connected to the second end portion 77.

[0133] The dust collection accessory 70 may not be formed of one part. For example, the dust collection accessory 70 may be a structure in which the cover portion 80 and the discharge portion 75 are formed as independent parts, and the discharge portion 75 is connected to the cover portion 80.

[0134] The housing 10 may not be configured as an anti - vibration housing. Additionally, the shape of the front end portion 11 and the shape of the lower end portion 110 of the housing 10 are not limited to the shapes in the above - described embodiment. Additionally, the motor 41 may not be housed in the front end portion 11, and for example, may also be housed in the central portion 13.

[0135] The dust collection accessory 70 is not limited to being installed on the vibrating tool 1, and can also be installed on other power tools. A power tool generally refers to a power tool in which the long axis of the housing intersects the driving axis of the main shaft among tools that operate by power supplied from a battery or an external AC power supply and are used for work, etc. As other examples of power tools, there can be cited rotary tools (for example, grinders, grindstones, polishers) that drive and rotate a tip tool around a prescribed driving axis.

[0136] The present invention is not limited to the above-described embodiments, and can be implemented by various structures without departing from the gist thereof. For example, the technical features in the embodiments corresponding to the technical features in each technical solution described in the Summary of the Invention column can be appropriately replaced and combined in order to solve part or all of the above technical problems, or in order to achieve part or all of the above effects. In addition, if the technical feature is not described as an essential feature in this specification, it can be appropriately deleted.

Claims

1. A dust collection accessory is installed on a power tool for collecting dust generated during the processing operation of the power tool. The power tool has a housing and a main shaft. The housing extends in the front-rear direction, and the main shaft extends along a driving axis. The lower end portion thereof protrudes downward from the front end portion of the housing and constitutes a tool mounting portion for mounting a tip tool, wherein, The drive axis extends in the vertical direction orthogonal to the front-rear direction, and the dust collection accessory is characterized in that it has a cover portion, a discharge portion, and at least one locking piece, wherein the cover portion has a suction hole, and in the installed state where the dust collection accessory is installed on the power tool, the drive axis passes through the suction hole, and the cover portion is formed so as to cover at least a part of the periphery of the tool mounting portion, and the cover portion has a bottom portion and a peripheral wall, wherein the suction hole is provided in the bottom portion; the peripheral wall surrounds the suction hole, is connected to the bottom portion and extends in the vertical direction, and the peripheral wall has a first wall and a pair of second walls, wherein in the installed state, the first wall is provided in the front in the front-rear direction and extends along the suction hole; the pair of second walls are connected to the first wall and extend rearward from the first wall; the discharge portion is connected to one of the pair of second walls of the cover portion and is formed to extend in a direction intersecting the front-rear direction, and is used for discharging the dust from the inside of the cover portion; the at least one locking piece is connected to the cover portion and is elastically deformable, and has a claw portion, the claw portion is locked to the housing at a specified position of the housing, and in a plan view, the claw portion is located outside the peripheral wall surrounding the suction hole.

2. The dust collection accessory according to claim 1, characterized in that the at least one locking piece is formed to extend in a direction intersecting the drive axis in the installed state.

3. The dust collection accessory according to claim 1 or 2, characterized in that the at least one locking piece is formed to extend in the front-rear direction in the installed state.

4. The dust collection accessory according to claim 3, characterized in that in the installed state, the front end of the at least one locking piece is connected to the cover portion, the claw portion is provided at the rear in the front-rear direction of the at least one locking piece.

5. The dust collection accessory according to any one of claims 1 to 4, characterized in that the at least one locking piece includes two locking pieces, the two locking pieces are arranged with a plane including the drive axis therebetween in the installed state.

6. The dust collection accessory according to any one of claims 1 to 5, characterized in that the discharge portion is a cylindrical member extending in a direction intersecting the front-rear direction, and the discharge portion has a first end portion and a second end portion, wherein the first end portion is connected to the cover portion and communicates the inside of the cover portion with the inside of the discharge portion; the second end portion is an end portion opposite to the first end portion and can be connected to a suction device.

7. The dust collection accessory according to any one of claims 1 to 6, characterized in that the cover portion, the at least one locking piece and the discharge portion are formed of one piece.

8. The dust collection accessory according to any one of claims 1 to 7, characterized in that the at least one locking piece has a gripping portion, the gripping portion extends in a direction different from the protruding direction of the claw portion, and is adapted to be gripped by a user.

9. The dust collection accessory according to any one of claims 1 to 7, characterized in that the first wall is arc-shaped, the at least one locking piece is a pair of locking pieces, the pair of locking pieces are formed such that the front ends are connected to the pair of second walls and extend rearward in the front-rear direction, and are arranged across a plane including the drive axis, the claw portion is provided on the pair of locking pieces and is formed to protrude toward the plane including the drive axis in the mounted state, the at least one locking piece has a gripping portion, the gripping portion is provided behind the claw portion of the at least one locking piece, protrudes rearward in the front-rear direction, and is adapted to be gripped by a user.

10. The dust collection accessory according to any one of claims 1 to 9, characterized in that the cover portion has a convex portion or a concave portion, and the convex portion or the concave portion is configured to be locked to the housing at a portion different from the portion where the claw portion is locked to the housing when the claw portion is locked to the housing.

11. A power tool capable of mounting the dust collection accessory according to any one of claims 1 to 10, characterized in that the housing has a locking portion and a guiding portion, wherein the locking portion is for the claw portion to be locked; the guiding portion is for guiding the claw portion to the locking portion.

12. The power tool according to claim 11, characterized in that the housing has a concave portion or a convex portion, the concave portion or the convex portion is provided at a portion different from the locking portion, and the concave portion or the convex portion is configured to lock the convex portion or the concave portion provided on the cover portion when the claw portion is locked to the locking portion.

13. The power tool according to claim 11 or 12, characterized in that the locking portion is provided behind the guiding portion and is formed by a recess in the side wall of the housing, the guiding portion includes a groove portion and an inclined surface, wherein the groove portion is provided on the side wall and extends in the up-down direction; the inclined surface is provided between the groove portion and the locking portion in the front-rear direction and inclines away from the plane including the drive axis from the groove portion to the locking portion.

14. The power tool according to any one of claims 11 to 13, characterized in that it further has a motor, the motor is housed in the front end portion of the housing, and has an output shaft extending parallel to the main shaft.

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