Power Tools

Abstract

To provide a power tool which enables attachment / detachment of a side handle to / from a tool body without using tools in addition to positioning of the side handle.SOLUTION: In a polisher 1, a side handle 30 is provided on a side surface of a gear housing 3. The side handle 30 is attached in a manner that attachment to / detachment from the gear housing 3 and angle adjustment in a state that the side handle 30 is attached to the gear housing 3 are enabled by operation of an operation knob 18 of an operation part 15 provided at the gear housing 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] TECHNICAL FIELD This disclosure relates to power tools such as polishers and grinders. [Background technology]

[0002] A power tool such as a polisher is provided with a side handle for an operator to grip. The side handle is attached to a side surface of the tool body. For example, Patent Document 1 discloses a power tool in which both left and right ends of a loop-shaped side handle are rotatably attached to the left and right sides of the tool body by screws. The side handle is provided with a lock knob that can be rotated between a position for locking the rotation of the side handle relative to the tool body and a position for releasing the lock. The angle of the side handle can be adjusted by rotating the lock knob to the unlock position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2001 / 19228 Summary of the Invention [Problem to be solved by the invention]

[0004] The conventional side handles described above can adjust the angle (position) of the side handle without using a tool such as a screwdriver. However, when attaching or detaching the side handle to or from the tool body, it is necessary to use a tool to attach or detach the screw, which makes the work cumbersome.

[0005] Therefore, an object of the present disclosure is to provide a power tool in which the side handle can be positioned and also attached and detached to the tool body without the use of tools. [Means for solving the problem]

[0006] In order to achieve the above object, the present disclosure provides a power tool having a side handle provided on a side surface of a tool body, The tool body has a mounting shaft provided on a side thereof, and an operating portion including an operating member that is passed through the mounting shaft and is movable in the axial direction thereof. the side handle is provided with a through-portion through which the mounting shaft passes, and a relief portion through which the mounting shaft can move in and out of the through-portion in a radial direction relative to the mounting shaft, the through-portion is passed by the mounting shaft between a side surface of the tool body and the operating member, and an engaged portion is provided at an eccentric position from the mounting shaft in the side handle with which the operating member engages and is positioned in a rotational direction of the side handle around the mounting shaft, The mounting shaft is provided with a biasing means for biasing the operating member to an engagement position with the side handle, and when the operating member is moved to a disengagement position with the side handle by a pulling operation from the tool body against the biasing means, the attachment and positioning of the side handle are released at the same time, and the side handle can be attached to and detached from the mounting shaft by relatively moving the mounting shaft in and out of the through-hole via the relief portion, and when the operating member is moved to the engagement position by the biasing means without relatively moving the mounting shaft out of the through-hole via the relief portion, the attachment and positioning of the side handle are performed at the same time. It is characterized by: In order to achieve the above object, another configuration of the present disclosure is a power tool having a side handle provided on a side surface of a tool body, An operating portion is provided on a side surface of the tool body, the operating portion including a mounting shaft having a head at an outer end thereof, an operating member that is passed through the mounting shaft and has one end rotatably connected to the tool body, and an engaging member that engages with the operating member from the side surface of the tool body. The side handle is provided with a through-portion through which the mounting shaft passes, and a relief portion through which the mounting shaft can move in and out of the through-portion in a radial direction relative to the mounting shaft, the through-portion being passed through by the mounting shaft between the operating member and the head of the mounting shaft, and an engaged portion is provided at an eccentric position on the side handle from the mounting shaft, with which the engaging member engages and positions the side handle in a rotational direction around the mounting shaft, The mounting shaft is provided with a biasing means for biasing the engaging member together with the operating member to an engagement position with the side handle, and when the engaging member is moved to a disengaged position with the side handle by pressing the other end of the operating member toward the tool body against the biasing means, the attachment and positioning of the side handle are released simultaneously, and the side handle can be attached and detached to the mounting shaft by moving the mounting shaft relatively in and out of the through-hole via the escape portion, and when the engaging member is moved to the engagement position together with the operating member by the biasing means without moving the mounting shaft relatively out of the through-hole via the escape portion, the attachment and positioning of the side handle are performed simultaneously. Effect of the Invention

[0007] According to the present disclosure, the side handle can be positioned and also attached / detached to / from the tool body without tools. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a polisher according to a first embodiment. [Diagram 2] FIG. 2 is a side view of the polisher of the first embodiment. [Diagram 3] FIG. 2 is a front view of the polisher of the first embodiment. [Figure 4] 3 is a cross-sectional view taken along line AA in FIG. 2. [Diagram 5] FIG. 2 is an exploded perspective view of the operation unit as viewed from the right side. [Figure 6] FIG. 2 is an exploded perspective view of the operation unit as viewed from the left side. [Figure 7] FIG. 13 is a front view of the state in which the operation knob is pulled to release the lock. [Figure 8] 13 is a side view illustrating attachment / detachment and angle adjustment of the side handle. FIG. [Figure 9] FIG. 11 is a perspective view of a polisher according to a second embodiment. [Figure 10] FIG. 11 is a side view of a polisher according to a second embodiment. [Figure 11] FIG. 11 is a front view of a polisher according to a second embodiment. [Figure 12] 11 is a cross-sectional view taken along line BB in FIG. 10. [Figure 13] FIG. 2 is an exploded perspective view of the operation unit as viewed from the right side. [Figure 14] FIG. 2 is an exploded perspective view of the operation unit as viewed from the left side. [Figure 15] FIG. 13 is a front view of the operation lever when it is pushed in to release the lock. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In one embodiment of the present disclosure, the operating portion includes a mounting shaft provided on a side of the tool body, and the side handle may be provided with a through-portion through which the mounting shaft passes, and an escape portion that allows the mounting shaft to move in and out radially relative to the through-portion. With this configuration, the side handle can be easily attached to and detached from the mounting shaft. In one embodiment of the present disclosure, the operating portion includes an operating member that is movably attached to the mounting shaft in its axial direction, and the side handle may be capable of being attached to and detached from the tool body, and positioned when attached to the tool body, by operating the operating member in the axial direction. With this configuration, the side handle can be attached, detached, and positioned by simply operating the operating member in the axial direction. In one embodiment of the present disclosure, an engagement portion may be provided at an eccentric position on the side handle from the mounting axis, with which an operating member engages and is positioned in a rotational direction of the side handle around the mounting axis. With this configuration, the positioning of the side handle can be easily performed using the operating member.

[0010] In one embodiment of the present disclosure, a biasing means is provided for biasing the operating member to an engagement position with the side handle, and when the operating member is moved against the biasing means to a disengagement position with the side handle, the attachment and positioning of the side handle are released simultaneously, and when the operating member is moved to the engagement position with the side handle, the attachment and positioning of the side handle are performed simultaneously. According to this configuration, when the operating member is released from the disengaged position, the side handle is automatically attached and positioned. In one embodiment of the present disclosure, the operating member may be movable to the disengaged position by a pulling operation from the tool body. According to this configuration, the operation of the operating member is simplified. In one embodiment of the present disclosure, the operating member may be integrally provided with an engagement portion for engaging with a side handle. This configuration is rational and allows the operating member to be used to restrict rotation of the side handle.

[0011] In one embodiment of the present disclosure, the operating portion includes an operating member having one end rotatably connected to the tool body, and the side handle can be attached to and detached from the tool body and positioned when attached by swinging the other end of the operating member around one end of the operating member. According to this configuration, attachment, detachment and positioning can be achieved by a simple swinging operation of the operating member. In one embodiment of the present disclosure, the side handle may be asymmetric in shape, and the operating portion may be attachable to either the left or right side of the tool body. With this configuration, the operator can choose the left or right orientation of the side handle depending on their dominant hand and the working conditions, improving usability. EXAMPLES

[0012] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. Fig. 1 is a perspective view showing a polisher which is an example of a power tool, Fig. 2 is a side view of the polisher, and Fig. 3 is a front view of the polisher. The polisher 1 has a motor housing 2 that houses a motor (not shown) and extends in the front-rear direction. A gear housing 3 with a spindle 4 protruding downward is attached to the front side of the motor housing 2. A disc-shaped tip tool (e.g., a pad) (not shown) can be attached perpendicularly to the lower end of the spindle 4. A grip housing 5 is attached to the rear side of the motor housing 2. The grip housing 5 has a thin-diameter grip portion 6 that extends rearward. A power cord 7 is connected to the rear end of the grip portion 6. As shown in Figures 4 and 5, mounting portions 10, 10 for the side handle 30 are provided in a protruding, platform-like manner on the left and right side surfaces of the gear housing 3. The protruding end face of each mounting portion 10 is a plane defined by the front-rear and up-down directions. A screw hole 11 is formed in the center of each mounting portion 10. A plurality of circular receiving holes 12, 12... are formed in the mounting portion 10 around the screw hole 11. The receiving holes 12 are bottomed holes with a smaller diameter than the screw hole 11 and are arranged at equal intervals on a concentric circle centered on the screw hole 11.

[0013] Here, the right-side mounting part 10 is provided with an operating part 15 that enables attachment and detachment of a side handle 30. The operating part 15 also enables adjustment of the angle of the attached side handle 30 around an axis in the left-right direction. As shown in FIGS. 5 and 6, the operation unit 15 includes a mounting shaft 16, a coil spring 17, and an operation knob . The mounting shaft 16 has, from the right side, a large diameter portion 20, a medium diameter portion 21, and a threaded portion 22, which are coaxially arranged. A flange portion 23 is formed on the outer periphery of the right end of the large diameter portion 20. A hexagonal hole 24 is formed in the center of the right end face of the large diameter portion 20. The medium diameter portion 21 is formed with a length shorter in the axial direction than the large diameter portion 20. The threaded portion 22 has a smaller diameter than the medium diameter portion 21 and can be screwed into the threaded hole 11 of the mounting portion 10. The coil spring 17 is fitted on the exterior of the large diameter portion 20 on the left side of the flange portion 23 . The operation knob 18 is a cylindrical body having an insertion hole 25 into which the mounting shaft 16 is inserted from the right side. A flange-shaped handle portion 26 is formed around the entire outer periphery of the right end of the operation knob 18. A ring-shaped wall portion 27 is formed on the inner periphery of the left end of the insertion hole 25. A through hole 28 is formed in the center of the wall portion 27, into which the large diameter portion 20 is loosely inserted.

[0014] Four engagement pins 29, 29... are provided on the left end surface of the operation knob 18 so as to protrude to the left. The engagement pins 29 are arranged at equal intervals on a concentric circle centered on the through hole 28. The engagement pins 29 can be inserted into the receiving holes 12 of the attachment part 10, respectively. The mounting shaft 16 is attached to the mounting part 10 by inserting it into the insertion hole 25 from the right side of the operation knob 18 and screwing the threaded portion 22 protruding from the through hole 28 into the threaded hole 11 of the mounting part 10. In this attached state, the medium diameter portion 21 abuts against the end face of the mounting part 10. The coil spring 17 is compressed in the axial direction with its right end abutting against the flange portion 23 of the mounting shaft 16 and its left end abutting against the wall portion 27 of the operation knob 18. As a result, the operation knob 18 is biased to an engagement position where the four engagement pins 29 are inserted into the four receiving holes 12 simultaneously. From this position, by pulling the operation knob 18 to the right against the bias of the coil spring 17 via the handle 26, the engagement pin 29 can be removed from the receiving hole 12. Even if the operation knob 18 is rotated around the mounting shaft 16, the engagement pin 29 can be inserted into the receiving hole 12 as long as the phase with the receiving hole 12 is aligned.

[0015] The side handle 30 has an inverted U-shape when viewed from the front. Both left and right ends of the side handle 30 extend in the up-down direction, and the upper portion extends in the left-right direction. However, the side handle 30 is asymmetric in that the left end is more loosely connected to the upper portion than the right end. The lower side of the right end is made of a metal plate 31. The upper side, upper portion, and left end of the right end of the side handle 30 are made of an integrated resin part 32. The upper end of the metal plate 31 is insert molded into the resin portion 32 and extends downward. The lower end of the metal plate 31 forms a connecting portion 33 that is circular in side view and is defined by the front-rear and up-down directions. A through hole 34 is formed in the center of the connecting portion 33. The medium diameter portion 21 of the mounting shaft 16 can pass through the through hole 34 when fitted. A radial relief portion 35 that communicates with the through hole 34 is cut out and formed in the connecting portion 33. The relief portion 35 has a width larger than the diameter of the medium diameter portion 21. Therefore, the medium diameter portion 21 can relatively enter and exit the through hole 34 via the relief portion 35. When the medium diameter portion 21 is positioned in the through hole 34, the connecting portion 33 can rotate around the medium diameter portion 21. A plurality of circular engagement holes 36, 36... are formed in the connecting portion 33. The engagement holes 36 are arranged at equal intervals on a concentric circle centered on the through hole 34. The number and arrangement of the engagement holes 36 are the same as those of the receiving holes 12 of the mounting portion 10.

[0016] When attaching the side handle 30 to the mounting part 10, first, as shown in Fig. 7, the operating knob 18 is pulled to the right until the engaging pin 29 comes out of the receiving hole 12 and the tip is positioned to the right of the medium diameter portion 21 of the mounting shaft 16. In this disengaged position, the radially outer side of the medium diameter portion 21 is opened. In this state, the connecting portion 33 of the metal plate 31 is slid radially of the medium diameter portion 21 so that the medium diameter portion 21 relatively enters the relief portion 35, as shown by the two-dot chain line a in Fig. 8. Then, the medium diameter portion 21 reaches the through hole 34 at the end of the relief portion 35. Therefore, the side handle 30 can be rotated around the mounting shaft 16 to any angle in the front-rear direction that does not interfere with the motor housing 2 and the gear housing 3. Once the angle is determined, the engagement holes 36 of the connecting part 33 are aligned with the receiving holes 12 of the mounting part 10, and the tension on the operation knob 18 is released. Then, the operation knob 18 moves to the left due to the urging of the coil spring 17, causing the four engagement pins 29 to pass through the engagement holes 36 and engage with the receiving holes 12. Thus, the connecting part 33 is fixed between the mounting part 10 and the operation knob 18 in a state where rotation around the mounting shaft 16 is restricted by the engagement pins 29. In this way, the rotation of the side handle 30 is locked.

[0017] To change the angle of the side handle 30, pull the operation knob 18 to the right to the disengagement position as described above. Then, the side handle 30, which has been released from engagement with the engagement pin 29, can be rotated around the medium diameter portion 21 as shown by the two-dot chain line b in Figure 8 to adjust the angle. Similarly, when removing the side handle 30, the operating knob 18 is pulled to the disengaged position, whereby the connecting portion 33 can be removed from the medium diameter portion 21 as is. On the other hand, if the operating portion 15 is attached to the left mounting portion 10, the orientation of the side handle 30 can be reversed to the left and right, and the attachment / detachment and angle adjustment of the metal plate 31 can be performed in the same manner.

[0018] In this manner, in the polisher 1 of the above-mentioned Example 1, the side handle 30 is attached so as to be capable of being attached and detached to the gear housing 3, and of having its angle adjusted (positioned) when attached to the gear housing 3, by using the operating portion 15 provided on the gear housing 3 (tool body). With this configuration, the angle of the side handle 30 can be adjusted and it can also be attached to and detached from the gear housing 3 without the use of tools.

[0019] In particular, the operating portion 15 includes a mounting shaft 16 provided on a side surface of the gear housing 3, and the side handle 30 is provided with a through hole 34 (through portion) through which the mounting shaft 16 passes, and an escape portion 35 that allows the mounting shaft 16 to move in and out of the through hole 34 relatively in the radial direction. Therefore, the side handle 30 can be easily attached to and detached from the mounting shaft 16. The operating section 15 includes an operating knob 18 (operating member) provided on the mounting shaft 16 so as to be movable in its axial direction, and the side handle 30 can be attached to and detached from the gear housing 3 and its angle adjusted when attached to the gear housing 3 by operating the operating knob 18 in the axial direction. Therefore, the side handle 30 can be attached and detached and its angle adjusted by simply operating the operating knob 18 in the axial direction. An engagement hole 36 (engaged portion) is provided in an eccentric position from the mounting shaft 16 in the side handle 30. The operation knob 18 engages with the engagement hole 36 to restrict rotation in the rotation direction of the side handle 30 about the mounting shaft 16. Therefore, the rotation of the side handle 30 by the operation knob 18 can be easily locked.

[0020] A coil spring 17 (biasing means) is provided which biases the operation knob 18 to an engagement position with the side handle 30, and when the operation knob 18 is moved against the coil spring 17 to a disengagement position with the side handle 30, the attachment and rotation of the side handle 30 are simultaneously unlocked, and when the operation knob 18 is moved to an engagement position with the side handle 30, the attachment and rotation of the side handle 30 are simultaneously locked. Therefore, when the hand is released from the operation knob 18 in the disengagement position, the attachment and rotation of the side handle 30 are automatically locked. The operation knob 18 can be moved to the disengaged position by being pulled from the gear housing 3. This makes it easy to operate the operation knob 18.

[0021] An engagement pin 29 (engagement portion) for engaging with the side handle 30 is integrally provided on the operation knob 18. This provides a rational configuration in which the operation knob 18 can be used to restrict the rotation of the side handle 30. The side handle 30 has an asymmetric shape, and the operating unit 15 can be attached to either the left or right side of the gear housing 3. Therefore, the operator can select the left or right orientation of the side handle 30 according to their dominant hand or working conditions, improving usability.

[0022] In the first embodiment, the number and positions of the locking pins are not limited to the above example. At least one locking pin is sufficient to position the side handle in the rotation direction. The number and positions of the receiving holes and engagement holes can also be changed. In the above example, a receiving hole is provided on the mounting part of the gear housing and a locking pin is provided on the operation knob, but this may be reversed and a locking pin provided on the mounting part and a receiving hole provided on the operation knob. In this case, too, the side handle can be attached / detached and the angle adjusted by pulling the operation knob to the disengagement position where it separates from the tip of the locking pin and forms a gap through which the connecting part of the side handle can enter. Because the locking pin is on the gear housing side, a structure that does not provide a receiving hole on the operation knob can also be selected. In the above example, the mounting portions are provided on the left and right sides of the gear housing so that the side handle can be mounted on either the left or right side. However, the mounting portion may be provided on only one side. Conversely, the side handle can be made symmetrical with metal plates on the left and right, and an operating part can be provided on each of the left and right mounting parts, so that the side handle can be attached and detached and the angle can be adjusted simultaneously using the left and right operating parts. The position of the attachment portion of the side handle is not limited to the above example, and the attachment portion may be provided on a housing other than the gear housing. EXAMPLES

[0023] Next, another embodiment of the present disclosure will be described, in which the same components as those in the first embodiment are denoted by the same reference numerals and overlapping descriptions will be omitted. Fig. 9 is a perspective view of the polisher, Fig. 10 is a side view of the polisher, and Fig. 11 is a front view of the polisher. In the polisher 1A, as shown in Figures 12 and 13, screw bosses 40, 40 are provided at the centers of the left and right mounting portions 10, 10 of the gear housing 3, protruding outward to the left and right, respectively. The screw boss 40 has a screw hole in the center, and parallel chamfered portions 41, 41 are formed on the front and rear of the outer circumferential surface. Support portions 42, 42 are provided on the side surface of the gear housing 3 below the mounting portions 10, 10. A pin 43 is inserted in the front-rear direction in each support portion 42, and both ends thereof protrude from the front and rear surfaces of the support portion 42.

[0024] The operation units 45, 45 are provided on the left and right mounting units 10, 10, respectively. Since the operation units 45 are symmetrical, the operation unit 45 on the right side will be described below. As shown in FIG. 14, the operating portion 45 includes a mounting shaft 46, an engagement plate 47, an operating lever 48, and a coil spring 49. The mounting shaft 46 is provided with a large-diameter circular head 50 at its right end. A hexagonal hole 51 is provided in the center of the right end face of the circular head 50. A medium-diameter portion 52 having a smaller diameter than the circular head 50 is formed coaxially on the left side of the circular head 50. A threaded portion 53 having a smaller diameter than the medium-diameter portion 52 is formed on the left side of the medium-diameter portion 52. The threaded portion 53 can be screwed into the screw boss 40.

[0025] The engagement plate 47 is ring-shaped in side view, and has a fitting hole 55 with a width across flats that matches the outer shape of the screw boss 40 formed in the center. A plurality of engagement protrusions 56, 56... are formed on the right end surface of the engagement plate 47. The engagement protrusions 56 are circular in side view, and are arranged at equal intervals on a concentric circle centered on the fitting hole 55. The engagement protrusions 56 are capable of engaging with the engagement holes 36 of the connecting portion 33 in correspondence therewith. A pair of folded pieces 57, 57 protruding to the left are formed on the front and rear surfaces of the engagement plate 47. The folded pieces 57, 57 have locking projections 58, 58 protruding to the front and rear and formed coaxially with each other. When the fitting hole 55 is fitted into the screw boss 40, the engagement plate 47 is restricted from rotation and can slide left and right along the screw boss 40. A cylindrical portion 59 protruding to the left is formed on the left end surface of the engagement plate 47 between the folded pieces 57, 57.

[0026] The operating lever 48 includes a pivot support portion 60, a frame portion 61, and an operating piece 62. The pivot support portion 60 is formed in a U-shape in a plan view with both ends facing leftward. The pivot support portion 60 is attached to the support portion 42 of the attachment portion 10 from the right side. At both ends of the pivot support portion 60, small holes 63, 63 through which the pin 43 provided on the support portion 42 passes are provided. Therefore, when the pivot support portion 60 is attached to the support portion 42, the operating lever 48 is supported so as to be swingable left and right about the pin 43. The frame portion 61 is integrally formed on the upper side of the pivot support portion 60. The frame portion 61 has a circular shape in a side view and a larger diameter than the engagement plate 47, and has locking recesses 64, 64 on both the front and rear surfaces to be locked to the locking projection 58 of the engagement plate 47 from the right side. The operation piece 62 is formed integrally with the upper side of the frame portion 61. The operation piece 62 is formed in an L-shape when viewed from the front, with an upper end extending upward. The coil spring 49 is fitted around the screw boss 40 on the left side of the engagement plate 47. The left end of the coil spring 49 abuts against the mounting portion 10. The right end of the coil spring 49 is fitted around the cylindrical portion 59 of the engagement plate 47 and abuts against the left end surface of the engagement plate 47.

[0027] In the operating section 45, the coil spring 49 is fitted onto the screw boss 40, and the shaft support section 60 of the operating lever 48 is attached to the support section 42 with the engagement plate 47 fitted thereto. Then, from the right side of the frame section 61, the threaded section 53 of the mounting shaft 46 is passed through the engagement plate 47 inside the frame section 61 and screwed into the screw boss 40. Then, the medium diameter section 52 comes into contact with the right end face of the screw boss 40. In this state, the engagement plate 47 is urged by the coil spring 49 to a position (engagement position) where the engagement projection 56 abuts against the left end surface of the circular head 50 of the mounting shaft 46. Thus, the operating lever 48 is in a right swing position where the frame portion 61, which is engaged by the locking projections 58, 58 of the engagement plate 47, is pressed to the right. In this right swing position, the operating piece 62 is separated from the right side surface of the gear housing 3.

[0028] When attaching the side handle 30 to the attachment portion 10, first, the right-side operating piece 62 is pressed leftward as shown in Fig. 15. Then, the operating lever 48 swings leftward about the pin 43 against the bias of the coil spring 49. As a result, the frame portion 61 slides the engagement plate 47 leftward via the locking projections 58, 58, and the engagement projection 56 moves away from the circular head 50. In this disengaged position, the radially outer side of the medium diameter portion 52 is released. In this state, the connecting portion 33 of the metal plate 31 is slid radially of the medium diameter portion 52 so that the medium diameter portion 52 relatively enters the relief portion 35, as shown by the two-dot chain line a in Fig. 8. Then, the medium diameter portion 52 reaches the through hole 34 at the end of the relief portion 35, and the side handle 30 can be rotated around the mounting shaft 46 to any angle in the front-rear direction that does not interfere with the motor housing 2 and the gear housing 3, as shown by the two-dot chain line b in Fig. 8. Once the angle is determined, the pressure on the operating piece 62 is released. The operating lever 48 then returns to the right-swinging position due to the bias of the coil spring 49, and the engagement protrusion 56 engages with the engagement hole 36 of the connecting part 33. Thus, the connecting part 33 is fixed between the circular head 50 and the engagement plate 47 in a state where rotation around the mounting shaft 46 is restricted by the engagement protrusion 56. In this way, the rotation of the side handle 30 is locked.

[0029] When changing the angle of the side handle 30, the operating piece 62 is pushed to the left to swing the operating lever 48 to the disengagement position as described above. Then, the side handle 30, which has been disengaged from the engagement protrusion 56, can be rotated about the medium diameter portion 52 to adjust the angle. Similarly, when removing the side handle 30, the operating lever 48 is swung to the disengagement position via the operating piece 62, and the side handle 30 can be removed from the medium diameter portion 52 as is. On the other hand, since the operating portion 45 is also provided on the left mounting portion 10, by reversing the orientation of the side handle 30, the connecting portion 33 can be similarly attached / detached and the angle adjusted.

[0030] In this way, in the polisher 1A of the above-mentioned Example 2, the side handle 30 is attached so that it can be attached and detached to the gear housing 3, and the angle can be adjusted (positioned) when attached to the gear housing 3, using the operating portion 45 provided on the gear housing 3. With this configuration, the angle of the side handle 30 can be adjusted and it can also be attached to and detached from the gear housing 3 without the use of tools. Particularly here, the operating section 45 includes an operating lever 48 (operating member) one end of which is rotatably connected to the gear housing 3, and the side handle 30 can be attached to and detached from the gear housing 3 and the angle can be adjusted in the attached state by swinging the other end of the operating lever 48 around one end of the operating lever 48. Therefore, attachment, detachment, and angle adjustment are possible by simply swinging the operating lever 48.

[0031] In the second embodiment, the operating lever is not limited to being provided in the vertical direction. For example, the operating lever may be arranged horizontally in the front-rear direction, with a pivot support at the rear end and an operating piece at the front end. The operating lever may also be arranged in an oblique direction. In the above example, the mounting portion and the operating portion are provided on the left and right sides of the gear housing so that the side handle can be attached to either the left or right side. However, the mounting portion and the operating portion may be provided on only one side. Conversely, the side handle may be symmetrical with metal plates on the left and right, and the side handle may be detachable and the angle may be adjusted simultaneously using the left and right operating parts. The position of the attachment portion of the side handle is not limited to the above example, and the attachment portion may be provided on a housing other than the gear housing.

[0032] In addition, in common to each embodiment, the side handle is not limited to an inverted U-shape when viewed from the front. For example, the side handle may be an inverted L-shape with an upper portion extending horizontally. The entire side handle may be made of metal or resin. The positioning of the side handle is not limited to angle adjustment, and the positioning in the present disclosure also includes changing the mounting position of the side handle by sliding it in any direction. In each embodiment, the operating portion is provided on the tool body, but the operating portion may also be provided on the side handle. The power tool does not have to be an AC tool, but may be a DC tool powered by a battery pack or the like. The power tool is not limited to a polisher. The present disclosure can be applied to other grinding and polishing tools such as sanders and grinders, and cutting tools such as circular saws and cutters. Therefore, the power tool is not limited to an electric tool. The present disclosure can be applied to air tools, engine tools, and the like. [Explanation of symbols]

[0033] 1,1A··polisher, 2··motor housing, 3··gear housing, 4··spindle, 10··mounting portion, 11··screw hole, 12··receiving hole, 15,45··operation portion, 16,46··mounting shaft, 17,49··coil spring, 18··operation knob, 21,52··medium diameter portion, 22,53··screw portion, 29··engagement pin, 30··side handle, 31··metal plate, 33··connecting portion, 34··through hole, 35··relief portion, 36··engagement hole, 40··screw boss, 42··support portion, 43··pin, 47··engagement plate, 48··operation lever, 56··engagement protrusion, 62··operation piece.

Claims

1. A power tool having a side handle provided on a side surface of a tool body, The tool body has a mounting shaft provided on a side thereof, and an operating portion including an operating member that is passed through the mounting shaft and is movable in the axial direction thereof. the side handle is provided with a through-portion through which the mounting shaft passes, and a relief portion through which the mounting shaft can move in and out of the through-portion in a radial direction relative to the mounting shaft, the through-portion is passed by the mounting shaft between a side surface of the tool body and the operating member, and an engaged portion is provided at an eccentric position from the mounting shaft in the side handle with which the operating member engages and is positioned in a rotational direction of the side handle around the mounting shaft, a biasing means for biasing the operating member to an engagement position with the side handle, and when the operating member is moved to a disengagement position with the side handle by a pulling operation from the tool body against the biasing means, the attachment and positioning of the side handle are released simultaneously, and the side handle can be attached and detached to the mounting shaft by moving the mounting shaft relatively in and out of the through-hole via the escape portion, and when the operating member is moved to the engagement position by the biasing means without moving the mounting shaft relatively out of the through-hole via the escape portion, the attachment and positioning of the side handle are performed simultaneously.

2. 2. The power tool according to claim 1, wherein the operating member is integrally provided with an engagement portion for engaging with the side handle.

3. A power tool having a side handle provided on a side surface of a tool body, An operating portion is provided on a side surface of the tool body, the operating portion including a mounting shaft having a head at an outer end thereof, an operating member that is passed through the mounting shaft and has one end rotatably connected to the tool body, and an engaging member that engages with the operating member from the side surface of the tool body. The side handle is provided with a through-portion through which the mounting shaft passes, and a relief portion through which the mounting shaft can move in and out of the through-portion in a radial direction relative to the mounting shaft, the through-portion being passed through by the mounting shaft between the operating member and the head of the mounting shaft, and an engaged portion is provided at an eccentric position on the side handle from the mounting shaft, with which the engaging member engages and positions the side handle in a rotational direction around the mounting shaft, a biasing means for biasing the engaging member together with the operating member to an engaging position with the side handle, and when the engaging member is moved to a disengaging position with the side handle by pressing the other end of the operating member toward the tool body against the biasing means, the attachment and positioning of the side handle are released simultaneously, and the side handle can be attached and detached to the mounting shaft by relatively moving the mounting shaft in and out of the through-hole via the escape portion, and when the engaging member is moved to the engaging position together with the operating member by the biasing means without relatively moving the mounting shaft out of the through-hole via the escape portion, the attachment and positioning of the side handle are performed simultaneously.

4. 4. The power tool according to claim 1, wherein the side handle has an asymmetric shape, and the operating portion can be attached to either the left or right side of the tool body.

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