Side handle for power tool and power tool

Abstract

The present application relates to a side handle for a power tool and a power tool. The side handle (10) and the sander (1) include an operation knob (21) which is attached to a gear housing (3) in a state where the rotation is restricted with respect to the gear housing (3), and an operation section (20) which can perform the locking and the releasing of the relative rotation of the side handle (10) with respect to the operation knob (21). Accordingly, the positioning with respect to the tool body can be performed in a tool-less manner, and the side handle can be attached to various types of power tools, thereby improving the versatility.

Description

Technical Field

[0001] This disclosure (the present invention) relates to a side handle (hereinafter referred to as "side handle") for power tools that is mounted on power tools such as polishers and grinders, and to a power tool on which the side handle is mounted. Background Technology

[0002] Power tools such as polishing machines and grinding machines are equipped with side handles for the operator to hold. The side handles are mounted on the side surface of the tool body. For example, Patent Document 1 discloses a power tool in which the left and right ends of a loop-shaped side handle are rotatably mounted on the left and right side surfaces of the tool body by screws. The side handles are equipped with a lock knob that can be rotated to a locked position and a unlocked position. The locked position is the position where the end of the side handle is locked relative to the tool body by rotation; the unlocked position is the position where the lock is released. When the lock knob is rotated to the unlocked position, the angle of the side handle can be adjusted; when the lock knob is rotated to the locked position, the angle of the side handle can be fixed. [Existing Technical Documents] [Patent Literature]

[0003] Patent Document 1: International Publication No. 2001 / 19228 Summary of the Invention [The technical problem to be solved by this invention]

[0004] The aforementioned prior art allows for angle adjustment (positioning) of the side handle without the use of tools such as screwdrivers. However, it requires a dedicated mounting part for the side handle on the tool body, thus reducing its versatility.

[0005] Therefore, the purpose of this disclosure is to provide a side handle and a power tool, which can be positioned relative to the tool body in a toolless manner and can be mounted on various types of power tools, thus having high versatility. [Technical solutions used to solve technical problems]

[0006] To achieve the above objectives, the first technical solution of this disclosure is a side handle for a power tool, which is mounted on the side surface of the tool body of the power tool, characterized in that... Includes a rotation prevention component and an operating part, wherein, The rotation prevention component can be installed on the tool body in a state in which rotation is restricted relative to the tool body; The operating unit can lock and unlock its relative position to the rotation prevention component. To achieve the above objectives, the second technical solution of this disclosure is a power tool, characterized in that it is configured to have a side handle for a power tool as described in the first technical solution of this disclosure mounted on the side surface of the tool body. [Invention Effects]

[0007] According to this disclosure, a side handle can be installed as long as the tool body has a mounting portion for a rotation-preventing component, and positioning can be achieved by adjusting the angle of the operating portion relative to the rotation-preventing component. Therefore, positioning relative to the tool body can be achieved without tools, and it can be installed on various types of power tools, thereby improving versatility. Attached Figure Description

[0008] Figure 1 This is a partial perspective view of the polishing machine in Example 1. Figure 2 This is a partial side view of the polishing machine of Example 1. Figure 3 This is a partial front view of the polishing machine in Example 1. Figure 4 yes Figure 2 AA sectional view. Figure 5 This is a three-dimensional exploded view of the operating unit as seen from the right side. Figure 6 This is a three-dimensional exploded view of the operating unit as seen from the left side. Figure 7 This is a partial perspective view of the polishing machine in Example 2. Figure 8 This is a partial side view of the polishing machine in Example 2. Figure 9 This is a partial front view of the polishing machine in Example 2. Figure 10 yes Figure 8 BB cross-sectional view. Figure 11 This is a three-dimensional exploded view of the operating unit as seen from the right side. Figure 12 This is a three-dimensional exploded view of the operating unit as seen from the left side. [Explanation of reference numerals in the attached figures] 1, 1A: Polishing machine; 2: Motor housing; 3: Gear housing; 4: Spindle; 5: Mounting part; 6: Threaded hole; 10, 10A: Side handle; 11: Grip part; 12: Arm part; 13: Cylinder part; 16: Bottom hole; 17, 26: Spline teeth; 20, 50: Operating part; 21: Operating button; 22, 41: Connecting bolt; 23, 52: Helical spring; 31: Rotation prevention part; 40: Rotation prevention arm; 44: Threaded protrusion (screwboss); 51: Operating plate; 53: Shaft bolt; 54: Engaging pin; 59: Engaging hole. Detailed Implementation

[0009] In one embodiment of this disclosure, the side handle may have a mounting component that can be installed on the tool body and can rotate relative to the mounting component, and the rotation prevention component is installed on the mounting component while being restricted from rotating relative to the mounting component. According to this structure, the rotation prevention component can be used to stop the rotation of the tool body by means of the mounting component for mounting to the tool body. In one embodiment of this disclosure, a locking portion that engages in the relative rotation direction may be provided on the rotation prevention member. Based on this structure, rotation can be easily stopped using a rotation prevention component. In one embodiment of this disclosure, the rotation prevention component can also serve as an operating part. This structure allows for a reduction in the number of parts and enables simple angle adjustment by rotating the parts to prevent operation.

[0010] In one embodiment of this disclosure, the rotation prevention member can be moved to a locked position and a unlocked position relative to rotation, and a force-applying mechanism is provided to apply force to the rotation prevention member towards the rotation locked position. Furthermore, when the rotation prevention member is moved to the unlocked position against the force-applying mechanism, relative rotation of the side handle relative to the rotation prevention member is possible; when the movement operation is released, the rotation prevention member returns to the rotation locked position, thus restricting relative rotation. According to this structure, after the rotation lock is released and the angle is changed by changing the angle in the unlocked position of the rotation prevention component, the rotation prevention component will automatically return to the rotation lock position and lock the rotation as soon as the hand is removed from the rotation prevention component. Therefore, the operability of angle adjustment is good.

[0011] In one embodiment of this disclosure, the side handle may have a pair of arms mounted on the left and right side surfaces of the tool body, and a pair of rotation prevention components and operating parts may also be provided on the left and right sides. According to this structure, angle adjustment cannot be performed without operating both operating parts simultaneously. Therefore, the side handle, which is in a rotation-locked state, will not rotate accidentally, thereby improving the reliability of angle adjustment. In one embodiment of this disclosure, the side handle may have an arm that is mounted on the side surface of the tool body. A rotating shaft is provided at a position different from the mounting position of the rotation prevention member on the tool body to rotatably connect the arm. The operating part can perform locking and unlocking operations for the relative rotation of the arm with respect to the rotating shaft. According to this structure, as long as the thickness and length of the rotation prevention component in the left and right directions are changed according to the size and shape of the power tool, other components can be shared. In one embodiment of this disclosure, the side handle can be installed on the tool body even if the left and right directions are reversed. This structure facilitates the assembly of the side handles. [Example 1]

[0012] The embodiments of this disclosure will now be described with reference to the accompanying drawings. Figure 1 This is a partial perspective view showing an example of a polishing machine with a side handle mounted on it as a power tool. Figure 2 It is a partial side view. Figure 3 It is a partial front view. The polishing machine 1 has a motor housing 2 that houses a motor (not shown) and extends in the front-rear direction. A gear housing 3 is assembled on the front side of the motor housing 2, which causes the spindle 4 to protrude downwards. A disc-shaped tip tool (e.g., a grinding pad) is orthogonally mounted at the lower end of the spindle 4. A power cord (not shown) is connected to the rear of the motor housing 2. like Figure 4 and Figure 5 As shown, mounting portions 5, 5 of the side handles 10 are formed on the left and right side surfaces of the gear housing 3. Each mounting portion 5 is a circular recess when viewed from the side, and a threaded hole 6 is formed in the center of each mounting portion 5 along the left-right direction.

[0013] The side handle 10 is detachably mounted to the mounting portions 5, 5. The side handle 10 is made of resin and forms an inverted U-shape when viewed from the front. The side handle 10 has a grip portion 11 and a pair of arms 12, 12, wherein the grip portion 11 extends in the left-right direction; the pair of arms 12, 12 are continuously arranged downward from the left and right ends of the grip portion 11. The cylindrical portions 13, 13 are formed coaxially at the lower ends of the arms 12, 12. A slightly larger diameter intermediate hole 15 is formed coaxially on the left and right outer sides of the central hole 14 of each cylindrical portion 13. A bottomed hole 16 with the largest diameter is formed coaxially on the left and right outer sides of the intermediate hole 15. A plurality of spline teeth 17, 17… extending in the axial direction are formed at equal intervals along the circumferential direction on the inner circumferential surface of the bottomed hole 16. Operating parts 20 and 20 are provided on the cylindrical portions 13, 13. These operating parts 20 and 20 can be disassembled and assembled relative to the mounting portions 5, 5 and their angles can be adjusted in the installed state. Since the operating parts 20 and 20 are symmetrical from left to right, the description will focus on the operating part 20 on the right side.

[0014] like Figure 4 , Figure 5 and Figure 6 As shown, the operating part 20 has an operating button 21, a connecting bolt 22, and a coil spring 23. The operating button 21 is a cylindrical body that appears circular when viewed from the side, having a small diameter portion 24 on the left and a large diameter portion 25 on the right. The small diameter portion 24 has an outer diameter that can fit into the bottomed hole 16 of the cylindrical portion 13 from the right, and is longer in the axial direction than the bottomed hole 16. A plurality of splines 26, 26... extending in the axial direction are formed at equal intervals along the circumferential direction on the outer circumferential surface of the small diameter portion 24. An annular wall portion 27 is formed on the inner circumferential side of the small diameter portion 24. A through hole 28 is formed at the center of the wall portion 27, and a pair of chamfered portions 29, 29 are formed in the through hole 28. The left end of the small diameter portion 24 can be inserted into or disengaged from the bottomed hole 16, and in the inserted state, the splines 17, 26 mesh with each other, so that the small diameter portion 24 and the cylindrical portion 13 become one in the rotational direction.

[0015] The connecting bolt 22 has a threaded portion 30 at its left end. With the connecting bolt 22 passing through the operating button 21 and the cylindrical portion 13 from the right side, the threaded portion 30 is screwed into the threaded hole 6 of the mounting portion 5. A rotation prevention portion 31 with a diameter larger than the threaded portion 30 is formed coaxially on the right side of the threaded portion 30. A pair of chamfered portions 32, 32 are formed on the outer peripheral surface of the rotation prevention portion 31. The rotation prevention portion 31 passes through the through hole 28 of the operating button 21 and is engaged with each other by the chamfered portions 29, 32, thereby making the rotation prevention portion 31 and the operating button 21 integral in the rotation direction. An annular groove 33 is formed near the left end of the rotation prevention portion 31. A C-shaped stopper 34 is externally mounted on the groove 33. The stopper 34 can be engaged from the right side in the central hole 15 of the cylindrical portion 13. A head 35 with a diameter larger than that of the rotation prevention part 31 is formed on the right side of the rotation prevention part 31. A hexagonal hole 36 is formed at the center of the right end face of the head 35. The helical spring 23 is externally mounted in the rotation prevention part 31 inside the operating button 21, with its left end abutting against the wall 27 of the operating button 21 and its right end abutting against the head 35 of the connecting bolt 22.

[0016] In the side handle 10 and polishing machine 1 configured as described above, in the left and right operating sections 20, the connecting bolts 22, each equipped with a coil spring 23 and a stop 34, are sequentially passed through the operating button 21 and the cylindrical section 13 as described above. Then, the threaded portion 30 protruding from the cylindrical section 13 is screwed into the threaded hole 6 of the mounting section 5. As a result, the stop 34, which is externally mounted on the rotation prevention section 31, is engaged with the central hole 15 of the cylindrical section 13, thereby causing the left side of the cylindrical section 13 to abut against the mounting section 5. At this time, each operating button 21 is forced by the coil spring 23 into the inner sliding position where the spline teeth 17 and 26 are engaged with each other by inserting the small diameter portion 24 into the bottom hole 16. Therefore, the operation buttons 21 that stop rotation by engaging with the rotation prevention portion 31 in each cylindrical portion 13 are restricted from rotation. This locks the rotation of the side handle 10.

[0017] On the other hand, when adjusting the angle of the side handle 10, such as Figure 4 As shown by the double-dotted line, in the left and right operating sections 20, 20, by pinching the large-diameter sections 25, 25, the operating buttons 21, 21 are pulled against the force of the coil springs 23, 23 and pulled to the outward sliding position where the small-diameter sections 24, 24 are disengaged from the bottom holes 16, 16. Thus, the restriction on the rotation of the cylinder sections 13, 13 by the operating buttons 21, 21 is released, and therefore the side handle 10 can move as... Figure 2 The handle 10 rotates forward and backward as shown by the double-dotted line. When the angle is determined and the operation buttons 21 and 21 are released, the operation buttons 21 and 21 return to the inner sliding position where the small diameter parts 24 and 24 are inserted into the bottom hole 16 by the force of the coil springs 23 and 23, so the rotation of the side handle 10 is locked again. However, even if the operation button 21 on either side is pulled to release the rotation restriction of the cylinder 13, the rotation lock of the side handle 10 can be maintained because the other cylinder 13 is still restricted from rotating. If the threads 30, 30 of the left and right connecting bolts 22, 22 are unscrewed from the threaded holes 6, 6, the side handle 10 can be removed from the gear housing 3. Therefore, even if the left and right directions are reversed, the side handle 10 can still be attached to and removed from the gear housing 3. As long as the tool body has a pair of left and right threaded holes, the side handle 10 can also be attached to and removed from other types of power tools (including power tools other than polishers).

[0018] Thus, the side handle 10 and polishing machine 1 of the above embodiment 1 include: an operation button 21 (rotation prevention component) and an operation part 20, wherein the operation button 21 can be mounted on the gear housing 3 in a state where rotation is restricted relative to the gear housing 3 (tool body); the operation part 20 can perform locking and unlocking operations relative to the operation button 21 at a relative angle (position). According to this structure, as long as the gear housing 3 has a mounting portion 5 for the connecting bolt 22, the side handle 10 can be installed, and its angle can be adjusted (positioned) relative to the operating button 21 via the operating portion 20. Therefore, the angle of the side handle 10 relative to the gear housing 3 can be adjusted without tools. In addition, the side handle 10 can be installed on various types of power tools, improving its versatility. In particular, the side handle 10 has a connecting bolt 22 (mounting component) that can be mounted on the gear housing 3 and can rotate relative to the connecting bolt 22. The operating button 21 is mounted on the connecting bolt 22 in a state where relative rotation is restricted relative to the connecting bolt 22. Therefore, the rotation can be stopped based on the operating button 21 by using the connecting bolt 22 for mounting to the gear housing 3.

[0019] The operation button 21 is provided with spline teeth 26 (engaging part) that engage in the relative rotation direction. Therefore, it is easy to stop rotation based on the operation button 21. The operating button 21 also serves as a rotation prevention component and an operating part 20. Therefore, the number of parts can be reduced, and the angle can be easily adjusted by operating the control button 21. The operating button 21 can move to an inward sliding position (locked position for relative rotation) and an outward sliding position (locked-out position), and is provided with a helical spring 23 (force application mechanism) that applies force to the operating button 21 in the inward sliding position. Furthermore, when the operating button 21 is moved to the outward sliding position against the helical spring 23, the side handle 10 can rotate relative to the operating button 21. When the movement operation is released, the operating button 21 returns to the inward sliding position, thus restricting relative rotation. Therefore, after the rotation lock is released and the angle is changed by sliding the operation button 21 to the outward sliding position, the operation button 21 will automatically return to the inward sliding position and lock the rotation as soon as the hand is removed. Therefore, the operability of the angle adjustment is good.

[0020] The side handle 10 has a pair of arms 12, 12 mounted on the left and right side surfaces of the gear housing 3, and a pair of operating buttons 21 are also provided on the left and right sides. Therefore, angle adjustment cannot be performed without operating both operation buttons 21 simultaneously, and the side handle 10, which is in the rotation lock state, will not rotate accidentally, thereby improving the reliability of angle adjustment. Even if the left and right directions are reversed, the side handle 10 can still be installed on the gear housing 3. Therefore, the side handle 10 is easy to assemble.

[0021] Furthermore, in Embodiment 1, the engagement between the operating button and the bottom hole of the side handle in the rotational direction is not limited to the meshing of spline teeth. It can be an engagement structure in which one or more protrusions engage with a groove, or it can be that a radial engagement protrusion is provided on one of the facing surfaces of the operating button and the bottom hole, and an engagement recess is provided on the other side, thereby achieving rotational locking through the engagement of the engagement protrusion and the engagement recess. In the above embodiment, the operating button side is a convex portion (small diameter portion), and the side handle side is a concave portion (with a bottom hole), but it can also be reversed. That is, a convex portion can be provided on the side handle side, and a concave portion can be provided on the operating button side so that the two engage in the rotational direction. The convex portion is provided with engaging parts such as splines, and the concave portion is also provided with engaging parts such as splines. In the above embodiment, operation buttons and operation parts are respectively provided on the left and right arms, but operation buttons and operation parts can also be provided only on either the left or right arm. Therefore, the side handle does not need to be symmetrical in shape. For example, the main view can be shaped like an inverted L, and only one arm can be mounted to the mounting part. In the above embodiments, the operation button is used as both the rotation prevention component and the operation part. However, the rotation prevention component and the operation part of the operation part can also be provided separately. By operating the operation part, the rotation prevention component can be engaged with or disengaged from the arm. Mounting components are not limited to connecting bolts; other components such as pins can also be used. [Example 2]

[0022] Next, another embodiment of this disclosure will be described. However, the same reference numerals will be used to refer to the same structural parts as in Embodiment 1, and repeated descriptions will be omitted. Figure 7 This is a partial 3D view of the polishing machine 1A. Figure 8 It is a partial side view. Figure 9 It is a partial front view. The side handle 10A has a pair of anti-rotation arms 40, 40 on the inner sides of the left and right arms 12, 12. For example... Figure 10 and Figure 11 As shown, the rotation prevention arms 40, 40 are fixed in a downward-extending posture by screwing the connecting bolts 41, 41, which pass through the upper ends of the rotation prevention arms 40, 40 from the left and right outer sides, into the threaded holes 6, 6 of the mounting portions 5, 5. Through holes 42, 42 are formed on the arm portions 12, 12 for screwing in the connecting bolts 41, 41. The lower ends of the rotation prevention arms 40, 40 have bottom holes 43, 43 that open outwards to the left and right. Threaded bosses 44, 44 are coaxially protruding outwards to the left and right on the bottom surfaces of the bottom holes 43, 43. The outer ends of each threaded boss 44 form coaxial small-diameter portions 45. Notches 46, 46 are formed in a straight line along the left and right direction on the lower surfaces of the rotation prevention arms 40, 40, opening the bottom holes 43, 43 to the lower surface. The lower ends of the arms 12 are connected to the bottom holes 43 via the operating parts 50 to an adjustable angle. Since the operating parts 50 are symmetrical, the description will focus on the operating part 50 on the right.

[0023] like Figure 10 , Figure 11 and Figure 12 As shown, the operating part 50 includes an operating plate 51, a helical spring 52, and a shaft bolt 53. The operating plate 51 is an annular ring that passes orthogonally through the threaded protrusion 44 within the bottom hole 43. Four engaging pins 54, 54… are protruding to the right from the right side of the operating plate 51. The engaging pins 54 are arranged at equal intervals circumferentially on concentric circles with the center of the operating plate 51. An operating piece 55, which appears as an inverted L-shape when viewed from the front, is formed at the lower end of the operating plate 51. This operating piece 55 extends downwards and then bends to the right. The operating piece 55 passes through the notch 46 and protrudes downwards from the rotation prevention arm 40. Therefore, the operating plate 51 can move left and right along the threaded protrusion 44 while being restricted to rotation within the bottom hole 43 by the operating piece 55. A helical spring 52 is externally mounted on a threaded protrusion 44 on the left side of the operating plate 51. The right end of the helical spring 52 abuts against the operating plate 51, and the left end abuts against the bottom surface with the bottom hole 43. Therefore, the operating plate 51 is subjected to a force to the right by the helical spring 52.

[0024] A through hole 56, coaxial with the threaded protrusion 44, is formed at the lower end of the arm portion 12 in the left-right direction. At the lower end of the arm portion 12, a cylindrical portion 57 protruding to the left from the through hole 56 is formed on the left side. The diameter of the cylindrical portion 57 is slightly larger than the diameter of the threaded protrusion 44, allowing the small-diameter portion 45 of the threaded protrusion 44 to be inserted into the through hole 56. On the right side of the cylindrical portion 57, an annular protrusion 58 is formed within the through hole 56, the inner diameter of which is smaller than the outer diameter of the small-diameter portion 45. At the lower end of the arm portion 12, eight engaging holes 59, 59… are formed around the cylindrical portion 57 in a left-right direction. The engaging holes 59 are arranged at equal intervals on a concentric circle centered on the cylindrical portion 57. The engaging pin 54 of the operating plate 51 can be inserted into the engaging holes 59 from the left side. The shaft bolt 53 is inserted into the through hole 56 from the right side of the arm 12 and screwed into the threaded protrusion 44 that inserts the small diameter portion 45 into the cylindrical portion 57. In this state, the head 60 of the shaft bolt 53 abuts against the protrusion 58 in the through hole 56. Therefore, the arm 12 and the rotation prevention arm 40 are connected in such a way that their lower ends can rotate relative to each other about the shaft bolt 53.

[0025] In the side handle 10A configured as described above, the operating plates 51 of each operating part 50 are forced by the coil spring 52 to an outward sliding position abutting against the left side of the cylinder 57. In this state, each locking pin 54 is inserted into the locking hole 59 of the arm 12, thus restricting the rotation of each arm 12 by engaging with the rotation prevention arm 40 and preventing rotation by the operating plate 51. In this way, the rotation of the side handle 10A is locked. On the other hand, when adjusting the angle of the side handle 10A, such as Figure 10 As shown by the double-dotted lines, the operating plates 51 and 51 are slid to the inner sliding position where the locking pins 54 disengage from the locking holes 59 via the operating plates 55 and 55 in the left and right operating sections 50 and 50. This releases the restriction on the rotation of the arms 12 and 12 by the operating plates 51 and 51, thus allowing the side handle 10A to rotate as shown in the diagram. Figure 8 As shown by the double-dotted lines, the operation plates 51 and 51 rotate forward and backward around the shaft bolts 53 and 53. When the angle is determined and the hand leaves the operating plates 55 and 55, the operating plates 51 and 51 return to the outward sliding position where the locking pins 54 are inserted into the locking holes 59 by the force of the coil springs 52 and 52, thereby locking the rotation of the side handle 10A again. Furthermore, when returning to the outward sliding position, even if the locking pins 54 are not aligned with the locking holes 59 and are abutting against the left side of the arm 12, as long as the side handle 10A is rotated slightly forward and backward, the operating plate 51 will automatically move to the outward sliding position where the locking pins 54 are aligned with the locking holes 59.

[0026] However, even if the rotation restriction of the arm 12 is released by moving the control plate 51 inward to the sliding position by the control plate 55 on either side, the rotation of the other arm 12 is still restricted, thus maintaining the rotation lock of the side handle 10A. If the left and right connecting bolts 41, 41 are unscrewed from the threaded holes 6, 6, the side handle 10A can also be removed from the gear housing 3. Therefore, even if the left and right directions are reversed, it can still be installed and removed relative to the gear housing 3. As long as the tool body has a pair of threaded holes on the left and right, the side handle 10A can also be installed and removed relative to other types of tools (including tools other than polishers).

[0027] Thus, the side handle 10A and polishing machine 1A of the above embodiment 2 include: a rotation prevention arm 40 (rotation prevention component) and an operating part 50, wherein the rotation prevention arm 40 can be installed on the gear housing 3 in a state where rotation is restricted relative to the gear housing 3; the operating part 50 can perform locking and unlocking operations relative to the rotation prevention arm 40. According to this structure, as long as the gear housing 3 has a mounting portion 5 for the rotation prevention arm 40, the side handle 10A can be installed, and the angle of the rotation prevention arm 40 can be adjusted (positioned) via the operating portion 50. Therefore, the angle relative to the gear housing 3 can be adjusted without tools. In addition, the side handle 10A can be installed on various types of power tools, improving its versatility.

[0028] In particular, the side handle 10A has an arm 12 mounted on the side surface of the gear housing 3. A shaft bolt 53 (rotation shaft) is provided at a position different from the mounting position of the rotation prevention arm 40 on the gear housing 3, which rotatably connects the arm 12. The operating part 50 can lock and release the relative rotation of the arm 12 with respect to the shaft bolt 53. Therefore, by changing the thickness and length of the rotation prevention arm 40 in the left and right directions according to the size and shape of the polishing machine 1A, other parts can be shared.

[0029] Furthermore, in Embodiment 2 described above, the position of the operating plate on the control panel is not limited to the lower side. The operating plate can also be located on the front or rear side of the control panel. The number and configuration of the locking pins can also be appropriately changed. The locking holes on the arm can also be changed accordingly based on the locking pins. In the above embodiments, the operating plate is mounted on the rotation prevention arm to engage with or disengage from the arm, but the opposite is also possible. For example, the operating plate can be mounted at the lower end of the arm and a helical spring can be used to apply force to the rotation prevention arm. Engaging holes that engage with the engaging pins on the operating plate can also be provided on the rotation prevention arm to achieve the same angle adjustment. The rotation prevention arm is not limited to being installed downwards from the side surface of the gear housing. It can be changed to be installed forward, backward, upward, or at an angle, depending on the polishing machine. In the above embodiments, the side handle is not limited to a symmetrical shape. Therefore, for example, an arm with only one side, which is arranged in an inverted L-shape when viewed from the front, can be mounted on the mounting part by rotating the anti-rotation component.

[0030] Furthermore, consistent across all embodiments, the side handle is not limited to an inverted U-shape when viewed from the front. It can also be a semi-circle bulging to the left, right, and upward. It can be made entirely of metal or entirely of resin. The positioning of the side handle is not limited to angle adjustment. It also includes situations where the side handle is fixed by sliding its mounting position in a specified direction. Powered tools can also be DC tools that use battery packs, rather than AC tools. Power tools are not limited to polishing machines. This disclosure can also be applied to other grinding and polishing tools such as grinders and sanders, as well as cutting tools such as circular saws and cutters. Therefore, power tools are not limited to electric tools. Even pneumatic tools and engine-driven tools can utilize this disclosure. Therefore, the mounting location of the side handle is not limited to the gear housing. It can be the motor housing or other housings.

Claims

1. A side handle for a power tool, which is mounted on the side surface of the tool body of the power tool, characterized in that, Includes the arm, connecting bolts, operating buttons, and force application mechanism, among which, The connecting bolts rotatably mount the arm to the side surface; The operating button is mounted on the connecting bolt in a state where rotation is restricted relative to the connecting bolt, and can be moved to a rotation lock position and a lock release position. The rotation lock position refers to the position where the operating button is splined into the arm to restrict the rotation of the arm relative to the connecting bolt, and the lock release position refers to the position where the spline engagement is released to allow the rotation of the arm relative to the connecting bolt. The force-applying mechanism applies force to the operating button toward the rotation lock position. When the operating button is moved to the lock-out position against the force-applying mechanism, the arm can rotate relative to the connecting bolt. When the movement to the lock-out position is released, the operating button returns to the rotation lock position, thus restricting the rotation of the arm.

2. The side handle for power tools according to claim 1, characterized in that, The arm has a pair and is mounted on the left and right side surfaces of the tool body. The connecting bolt, the operating button, and the force application mechanism are also provided in pairs on the left and right.

3. The side handle for power tools according to claim 1 or 2, characterized in that, It can be installed on the main body of the tool even if the left and right directions are reversed.

4. A power tool, characterized in that, A power tool side handle as described in claim 1 or 2 is mounted on the side surface of the tool body.

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