JP6252970B2 - Electric tool - Google Patents

Description

  The present invention relates to a power tool, and more particularly to a power tool for driving an output shaft to which a tip tool is attached.

  Conventional electric tools mainly include a drive source such as an electric motor or an air motor, and an output shaft that vibrates in a predetermined angle range by the drive source. By attaching a tip tool to the output shaft, cutting, It can be used for various operations such as grinding, polishing and peeling operations.

  As the tip tool, a tool that extends outward in the radial direction of the output shaft and is provided with a saw blade, a tool in which a diamond chip or a carbide chip is fixed to an end or a flat surface, a scraper-shaped tool, or the like is used. These tip tools can selectively change the direction of the extending direction by a predetermined angle according to the work content (for example, Patent Document 1).

JP2012-2323481

  However, the conventional power tool (Patent Document 1) temporarily places the power tool directly on the work table, the floor, or the like when it is necessary to temporarily place the power tool due to temporary interruption or break time of the work. There were many cases. In addition, there is no mechanism for guiding the electric tool when moving the electric tool on the workpiece.

  Then, an object of this invention is to provide the electric tool which can temporarily place an electric tool by a simple method. Moreover, it aims at providing the electric tool which can guide an electric tool by a simple method.

In order to solve the above-mentioned problem, a housing that houses a drive source, an output shaft that protrudes from the housing, is driven by the drive source, and a tip tool is detachably attached thereto, and a direction that intersects the axial direction of the output shaft And a guide that is detachably attached to the housing so as to extend to the workpiece and guides the machining by the tip tool in a state of being in contact with a workpiece, and the housing is equipped with the guide to which the guide can be attached. A power tool is provided, wherein the guide has a hook portion that can be hooked to an external member.
In order to solve the above-mentioned problems, a housing that houses a drive source, an output shaft that protrudes from the housing, is driven by the drive source, and a tip tool is detachably attached thereto, and intersects the axial direction of the output shaft. And a guide that is detachably attached to the housing so as to extend in a direction to be guided, and guides processing by the tip tool in a state of being in contact with a workpiece, and the guide can be attached to the housing. The guide has a workpiece abutting portion that abuts on the workpiece during work , and the tip tool is more than the workpiece abutting portion in the extending direction of the guide. And a space surrounded by the workpiece contact portion is formed in the guide.

  According to such a configuration, since the guide has the hook portion, the power tool can be hooked on the projection, belt, or stepladder of the scaffold. For this reason, when the work is temporarily interrupted or when the user takes a break, the user can simply place the electric tool temporarily on the external member, thereby improving work efficiency. In addition, in a work site where traffic of people and things is intense, it is possible to prevent the electric tool from getting in the way by hooking the electric tool on the external member. Furthermore, workability is improved because the guide for machining guidance can be attached to the electric tool only when necessary. Furthermore, since the guide can be mounted, the processing accuracy is improved.

  In the above configuration, it is preferable that the output shaft protrudes from the mounting portion, and the guide can be mounted on the mounting portion at a plurality of positions where the guide is rotated around the output shaft.

  According to such a configuration, since the output shaft protrudes from the mounting part, the distance between the tip tool attached to the output shaft and the guide is close, and the guide is pressed against the work material. Compared with the case where the distance between the tip tool and the guide is long, the work stability is improved. In addition, since the guide can be mounted on the mounting portion at a plurality of positions rotated around the output shaft, it is possible to cope with processing at an angle with respect to the workpiece, and guide performance and workability. Will improve.

  Further, it is preferable that the guide can be mounted on the mounting portion at a plurality of positions where the guide is rotated around the mounting portion.

  According to such a configuration, since the guide can be mounted at a user's desired angle, it is possible to respond to various work modes and widen the range of work.

  Further, it is preferable that the guide is slidable within a predetermined range in the extending direction of the guide with respect to the mounting portion, and can be mounted on the mounting portion at a plurality of slide positions within the range.

  According to such a configuration, it is possible to adjust the depth of the cut when the tip tool processes the workpiece. For this reason, it is possible to process at a desired depth when processing a thin workpiece or by specifying a depth of cut.

  The housing houses a fan for cooling the drive source, and the housing is formed with a plurality of exhaust holes for exhausting outside air taken into the housing by the fan to the outside of the housing. The power tool further includes an opening / closing member connected to the guide to open and close the plurality of exhaust holes, and at least one of the plurality of exhaust holes according to the plurality of slide positions with respect to the mounting portion of the guide. The one is preferably opened and closed.

  According to such a configuration, the guide slide position can be adjusted when the exhaust air or chips that reach a high temperature are uncomfortable when directly hitting the face, or when it is desired to change the direction of the exhaust air according to the work mode. The exhaust air coming out of the exhaust hole can be adjusted simply by changing it, so that work efficiency and comfort are improved.

  The plurality of exhaust holes include a first exhaust hole and a second exhaust hole that exhausts the outside air in a direction different from the exhaust direction of the first exhaust hole. When the guide has the first slide position and the second slide position, and the guide is located at the first slide position, the first exhaust hole is closed, the second exhaust hole is opened, and the guide is When located at the second slide position, it is preferable that the first exhaust hole is open and the second exhaust hole is closed.

  According to such a configuration, when exhaust air from the first exhaust hole is blocked and exhaust air is to be emitted from the second exhaust hole, or exhaust air from the second exhaust hole is blocked and exhaust air is exhausted from the first exhaust hole. When it is desired to take out the air, the hole from which the exhaust air comes out can be changed simply by changing the slide position of the guide.

  Moreover, it is preferable that the hook portion has a hook shape when viewed from a direction orthogonal to the extending direction of the guide and the axial direction of the output shaft.

  According to such a configuration, the hooking portion for hooking the guide on the rod-shaped external member can be formed easily and inexpensively, so that the cost can be reduced.

  Further, it is preferable that a hooking hole penetrating in the axial direction of the output shaft and hookable on the protrusion of the external member is formed in the hooking portion.

  According to such a configuration, the hook portion for hooking the guide to the external member having the protrusion can be formed easily and inexpensively, so that the cost can be reduced.

  The drive source preferably has a rotating shaft that protrudes in a direction intersecting the axial direction of the output shaft, and the hooking portion and the center of gravity overlap each other when viewed from the protruding direction of the rotating shaft.

  According to such a configuration, the electric tool does not tilt in the state where the electric tool is hooked by the external member, and can be arranged in an orderly manner when the electric tool is hooked and stored, so that the storage property is improved.

  The drive source has a rotation shaft, and a vibration conversion mechanism for vibrating the tip tool by converting the rotational force of the rotation shaft into the reciprocating rotational motion of the output shaft is provided in the housing. The workpiece is preferably processed by vibration of the tip tool.

According to such a configuration, since the machining guide can be mounted on the electric tool that vibrates the tip tool, the machining direction can be guided, the machining depth can be adjusted, and the electric tool that vibrates the tip tool. The workability of the tool can be improved.
The guide has at least two rod-shaped portions extending in the same direction and a mounting piece that can be mounted on the mounting portion, and one end of the rod-shaped portion is connected to the mounting piece, and the rod-shaped portion the other end is preferably connected to said pressurized Industrial materials abutment.
The workpiece contact portion extends in a direction intersecting with the extending direction of the guide, and the guide further includes a folded portion extending from the workpiece contact portion so as to be close to the output shaft. Preferably, the hook portion has the workpiece contact portion and the folded portion.

  According to the electric tool of the present invention, work efficiency can be improved.

It is a fragmentary sectional view of the side view which shows the guide non-mounting state of the electric tool by the 1st Embodiment of this invention. It is a fragmentary sectional view of the upper surface view which shows the guide non-mounting state of the electric tool by the 1st Embodiment of this invention. It is a figure which shows the guide mounting state of the electric tool by the 1st Embodiment of this invention, (a) is a side view, (b) is a bottom view. It is a figure which shows the guide of the electric tool by the 1st Embodiment of this invention, (a) is a front view, (b) is a side view, (c) is a bottom view. It is a fragmentary sectional view of the mounting axis | shaft of the electric tool by the 1st Embodiment of this invention. It is a figure which shows the use condition of the electric tool by the 1st Embodiment of this invention, (a) is a side view, (b) is a bottom view. It is a side view which shows the use condition of the electric tool by the 1st Embodiment of this invention. It is a figure which shows the guide of the modification 1 of the electric tool by the 1st Embodiment of this invention, (a) is a front view, (b) is a side view, (c) is a bottom view. It is a side view which shows the use condition of the modification 1 of the electric tool by the 1st Embodiment of this invention. It is a figure which shows the modification of the electric tool by the 1st Embodiment of this invention, (a) shows the modification 2, (b) has shown the modification 3. FIG. It is a figure which shows the modification 4 of the electric tool by the 1st Embodiment of this invention, (a) is a side view, (b) is a bottom view. It is a figure which shows the guide of the electric tool by the 2nd Embodiment of this invention, (a) is a side view, (b) is a front view, (c) is a bottom view, (d) is a top view. It is a figure which shows the electric tool by the 2nd Embodiment of this invention, (a) is a side view, (b) is a bottom view. It is a figure showing the state which hooked the guide of the electric tool by the 1st Embodiment of this invention on the rod-shaped external member. It is a figure showing the state which hooked the guide of the electric tool by the 1st Embodiment of this invention on the protruding external member.

  First, the power tool according to the first embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 to 3, the electric power tool 1 mainly includes a housing 2, a motor 3, a vibration conversion mechanism 4, an output unit 5, a fan 6, and a guide 10. It is used in a state where the tip tool 9 is attached to the part 5. A direction in which the output unit 5 is provided with respect to the motor 3 is defined as a front direction, and a direction opposite to the front direction is defined as a rear direction. Further, a direction in which the output unit 5 protrudes from the housing 2 is defined as a downward direction, and a direction opposite to the downward direction is defined as an upward direction. Furthermore, the right is defined as the right direction and the left is defined as the left direction when viewed from the rear.

  The housing 2 has a substantially cylindrical shape and includes a first housing 22 and a second housing 21. The housing 2 is made of, for example, a heat resistant resin material.

  The first housing 22 is a portion that is gripped by the user when the electric power tool 1 is used, and accommodates the motor 3, the fan 6, and a control circuit unit (not shown) therein. The first housing 22 is provided with an operation switch 23, a dial 8, and a power cable 7.

  The motor 3 as a drive source is accommodated in the front portion of the first housing 22 and includes a rotation shaft 31. The rotating shaft 31 projects forward from the front end of the motor 3 and is driven to rotate by the motor 3.

  The fan 6 is fixed to the rotating shaft 31 and rotates coaxially with the rotating shaft 31. The fan 6 takes outside air into the housing 2 through an intake hole (not shown) and discharges the outside air to the outside of the housing 2. Thereby, cooling air is generated inside the housing 2 and the motor 3 is cooled.

  The operation switch 23 is provided above the front end portion of the first housing, and is electrically connected to the motor 3 and a control circuit unit (not shown). The operation switch 23 can be turned on or off by moving the operation switch 23 in the front-rear direction.

  A control circuit unit (not shown) is electrically connected to the motor 3 via the power cable 7 and the operation switch 23 and controls the driving of the motor 3.

  The power cable 7 extends from the rear end portion of the first housing 22, one end of which can be electrically connected to a commercial power source (not shown), and the other end is electrically connected to a control circuit portion (not shown). Has been.

  The dial 8 is a substantially disc-shaped knob and is provided on the left side of the rear end portion of the first housing 22. The dial 8 is electrically connected to a control circuit unit (not shown), and the number of rotations of the motor 3 can be changed by operating the dial 8.

  The second housing 21 is provided in front of the first housing 22. The second housing 21 accommodates the vibration conversion mechanism 4 and a part of the output unit 5 therein, and a bearing holder 21 </ b> A and a holder 21 </ b> B are formed. ing. Further, the output portion 5 protrudes downward from the lower side of the front end portion of the second housing 21 to hold the tip tool 9. Further, as shown in FIG. 3B, three mounting holes 2 a are formed at every 45 ° around the axis of the output portion 5 on the lower side of the second housing.

  As shown in FIGS. 1 to 3, the vibration conversion mechanism 4 includes a spindle 41 and a swing arm 42.

  The spindle 41 has a substantially cylindrical shape extending in the front-rear direction, and is coaxially fixed to the rotating shaft 31. An eccentric shaft 41 </ b> A is provided at the front end of the spindle 41 and is rotatably supported by the first ball bearing 43. The first ball bearing 43 is supported inside the second housing 21 by a bearing holder 21A.

  The eccentric shaft 41A protrudes forward from the front end portion of the spindle 41 so as to be eccentric with respect to the rotation shaft 31. A second ball bearing 44 is mounted on the outer side of the eccentric shaft 41 </ b> A in the radial direction, and the outer peripheral surface of the second ball bearing 44 is in contact with the swing arm 42.

  The swing arm 42 includes an arm portion 42 </ b> A at the rear end portion, and the front end portion is connected to the output portion 5. As shown in FIG. 2, the arm portion 42 </ b> A extends upward from the left and right edge portions of the rear end portion of the swing arm 42, and sandwiches the second ball bearing 44 from the left and right directions.

  The output unit 5 is located in front of the vibration conversion mechanism 4 and includes an output shaft 51 and a bolt 52.

  The output shaft 51 extends in the vertical direction and protrudes from the lower side of the front end portion of the second housing 21 in a direction (downward) orthogonal to the axial direction of the rotary shaft 31. The output shaft 51 includes a tool mounting portion 55 and is connected to the swing arm 42 at the upper portion thereof. The output shaft 51 is rotatably supported by the second housing 21 by a bearing 53 and a third ball bearing 54. The bearing 53 and the third ball bearing 54 are supported inside the second housing 21 by the holder 21B.

  As shown in FIGS. 3A and 3B, the tool attachment portion 55 is a member that detachably holds the tip tool 9, and has a shape that is expanded in the radial direction of the output shaft 51. Provided at the lower end of the output shaft 51. Further, a tool contact surface 55 </ b> A that contacts the tip tool 9 is defined on the lower surface of the tool mounting portion 55. The tool mounting portion 55 is configured by screwing the bolt 52 into a bolt hole (not shown) formed in the tool contact surface 55A in a state where the tip tool 9 is sandwiched between the tool contact surface 55A and the washer 56. The tip tool 9 is held. The tool mounting portion 55 is configured to be able to hold the tip tool 9 at a plurality of positions rotated about the output shaft 51 with respect to the second housing 21.

  As shown in FIG. 1, the holder 21 </ b> B is provided inside the second housing 21 and includes a mounting portion 24. The mounting portion 24 has a substantially cylindrical shape extending in the vertical direction, and protrudes downward from the second housing 21 so as to cover the outer peripheral surface of the output shaft 51. A guide fitting portion 24 </ b> A that is recessed inward in the radial direction of the output shaft 51 is formed in the mounting portion 24. As shown in FIG. 5, the guide fitting portion 24 </ b> A is coaxial with the mounting portion 24, and its cross section is formed in a substantially regular octagon. The guide fitting portion 24 </ b> A positions the guide 10 with respect to the second housing 21.

  As shown in FIG.1 and FIG.2, the tip tool 9 is comprised by the board | substrate 9A and the scraper main body 9B. The substrate 9A is formed by bending a rectangular plate material into a step shape, and a scraper body 9B is fixed to the front end portion by welding. The scraper body 9B is made of a steel plate, and a blade portion 9C for performing a peeling operation or the like is formed at the front end portion thereof.

  As shown in FIGS. 3 to 5, the guide 10 includes a guide base portion 10 </ b> A, a workpiece contact portion 10 </ b> B, and a folded portion 10 </ b> C, and has a hook shape in a side view.

  As shown in FIGS. 4C and 5, the guide base portion 10 </ b> A has a flat plate shape extending in the front-rear direction, and the thickness in the vertical direction substantially matches the length in the vertical direction of the guide fitting portion 24 </ b> A. It is configured. Further, the guide base 10A is formed with a through hole 10a, a notch 10b, and a hooking hole 10c. The through-hole 10a is located in the approximate center of the guide base 10A, and is formed in a shape that represents a contour of a circular shape and a rectangular shape. The circular portion of the through-hole 10a is configured to have a radius larger than the radius of the mounting portion 24, and the width in the left-right direction of the rectangular portion is that when the guide fitting portion 24A is viewed from the bottom. It is configured to be slightly larger than the width of two opposing sides of the octagon.

  The notch 10b is formed by cutting out an ellipse from the center of the rear end of the guide base 10A toward the front. The length of the notch 10b in the front-rear direction is such that the guide 10 is moved rearward from the state in which the rear end of the guide fitting portion 24A and the guide base 10A are in contact with each other (the state shown in FIG. 5A). In this case, the distance between the guide fitting portion 24A and the rectangular portion of the through hole 10a is slightly shorter than the distance to the position where the fitting is released. For this reason, the guide 10 can slide by the length of the notch 10b in the front-rear direction in the front-rear direction while being held by the guide fitting portion 24A.

  The hooking hole 10c is a long hole extending forward and backward, and is formed between the front end edge of the guide base portion 10A and the through hole 10a. As shown in FIGS. 4A and 4B, the workpiece contact portion 10B is bent at a substantially right angle from the front end edge of the guide base portion 10A and extends upward, and is a flat plate integrally with the guide base portion 10A. It is formed in a shape. As shown in FIG. 4B, the folded portion 10C extends rearward from the upper edge of the workpiece contact portion 10B, and is formed in a flat plate shape integrally with the workpiece contact portion 10B. . In addition, a hook portion is formed by the front portion of the guide base portion 10A, the workpiece contact portion 10B, and the folded portion 10C, and as shown in FIG. The electric tool 1 can be hooked on the handrail 800 that is. Since the guide 10 includes the folding portion 10C, when the guide 10 is about to be detached from the handrail 800, the handrail 800 and the folding portion 10C interfere with each other, and the guide 10 is prevented from being easily detached from the handrail 800. it can. Further, as shown in FIG. 15, the electric tool 1 is inserted into the hook hole 10 c that is a hook portion of the electric tool 1 by inserting a protrusion 830 that is an external member provided in the wall 820 and extending in the front-rear direction. The protrusion 830 can be hooked. The gravity center G of the electric power tool 1 is the protruding direction of the rotating shaft 31 (FIGS. 14 and 15) in both cases where the electric power tool 1 is hooked on the handrail 800 and when the electric power tool 1 is hooked on the protrusion 830. In FIG. 4, the hook portion overlaps with the hook portion as viewed in the vertical direction.

  Next, a case where the guide 10 is attached to the mounting portion 24 will be described.

  First, with the tip tool 9 attached to the tool attachment portion 55 removed, the tool attachment portion 55 and the attachment portion 24 are vertically penetrated through the circular portion of the through hole 10a. Then, the guide 10 is slid forward at a position where the guide base portion 10A and the guide fitting portion 24A overlap when viewed from the left and right directions, and the rectangular portion of the through hole 10a is fitted to the guide fitting portion 24A. Finally, the guide 10 is mounted on the mounting portion 24 by screwing the mounting screw 10D into the mounting hole 2a through the notch 10a in a state where the through hole 10a and the guide fitting portion 24A are fitted. The Further, as shown in FIG. 5B, the guide 10 can be extended by arbitrarily selecting two opposing sides of the octagonal shape of the guide fitting portion 24A to be fitted to the rectangular portion of the through hole 10a. The guide 10 can be mounted on the mounting portion 24 in a state where the direction is inclined by 45 ° with respect to the front direction.

  Further, the mounting screw 10D is loosened from the state of FIG. 5A, the guide 10 is slid rearward to the position of FIG. 5C, and the mounting screw 10D is tightened again, so that within the predetermined range, that is, the notch 10b. The protrusion amount of the guide 10 from the second housing 21 can be adjusted within the range of the length in the front-rear direction.

  Next, the operation of the electric power tool 1 will be described.

  When the power cable 7 is connected to a commercial power source and the operation switch 23 is slid forward, the rotating shaft 31 of the motor 3 and the spindle 41 coaxially fixed to the rotating shaft 31 start to rotate. When the spindle 41 rotates, the first ball bearing 43 attached to the eccentric shaft 41 </ b> A provided on the spindle 41 moves eccentrically about the axis of the rotating shaft 31. Due to the eccentric motion of the first ball bearing 43, the arm portion 42A of the swing arm 42 swings in the left-right direction, and the output shaft 51 connected to the front end portion of the swing arm 42 reciprocates within a predetermined angular range in the rotational direction. (Reciprocating rotary motion) is performed. As a result, the tip of the tip tool 9 attached to the output shaft 51 vibrates.

  As shown in FIGS. 6A and 6B, when the electric power tool 1 is used in a state where the workpiece contact portion 10B of the guide 10 and the workpiece W are in contact with each other, the tip with respect to the workpiece W The working depth and angle of the tool 9 can be kept constant, and workability can be improved.

  In addition, as shown in FIG. 7, the guide 10 can be processed at various handle angles by mounting the guide 10 at an angle with respect to the second housing 21.

  With reference to FIG.8 and FIG.9, the electric tool 200 which is the modification 1 of the 1st Embodiment of this invention is demonstrated. The electric power tool 200 is configured by changing the guide 10 of the first embodiment to a guide 11. In addition, about the structure same as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIGS. 8 and 9, the guide 11 includes a guide base portion 11 </ b> A, a workpiece contact portion 11 </ b> B, and a mounting piece 11 </ b> D, and has an L shape in a side view.

  As shown in FIG. 8C, the guide base portion 11A includes a rod-shaped portion 11E, 11F, and 11G. The rod-shaped portion 11E is located at the rear end portion of the guide base portion 11A and extends in the left-right direction. Further, the rod-like portions 11F and 11G respectively extend forward from both end portions of the rod-like portion 11E. The distance between the rod-shaped parts 11F and 11G in the left-right direction is different between the rear part and the front part, and the front part is larger than the rear part (so-called two-surface structure). The distance between the rear portions of the guide base portion 11A is substantially equal to the width of two opposing sides of the guide fitting portion 24A, and the distance between the front portions of the guide base portion 11A is larger than the diameter of the mounting portion 24. The guide 11 can be attached to the guide fitting portion 24A by passing the attachment portion 24 through the front interval and fitting the guide fitting portion 24A into the rear interval. Further, as shown in FIG. 9, by appropriately selecting two opposing sides of the guide fitting portion 24 </ b> A, the guide 11 is rotated to the mounting portion 24 at a plurality of positions rotated about the axis of the mounting portion 24. Can be attached.

  The workpiece contact portion 11B includes a rod-shaped portion 11H, 11I, and 11J. The rod-like portions 11H and 11J extend upward from the front end portions of the rod-like portions 11F and 11G, respectively. The rod-shaped portion 11J extends in the left-right direction, and connects the upper ends of the rod-shaped portions 11H and 11I. The guide 11 can be hooked on the protrusion by inserting a protrusion as an external member into a space surrounded by the rod-shaped portions 11H, 11I, and 11J.

  The mounting piece 11D has a substantially rectangular shape and is provided at the rear end of the guide base 11A. A mounting long hole 11a, which is a long hole extending in the front-rear direction, is formed at the rear of the mounting piece 11D, and the mounting screw 10D is screwed into the mounting hole 2a in a state where the guide 11 is fitted to the guide fitting portion 24A. By combining, the guide 11 can be mounted on the mounting portion 24. Further, the guide 11 is slidable in the extending direction within the range of the length in the front-rear direction of the mounting long hole 11a.

  With reference to Fig.10 (a), the electric tool 300 which is the modification 2 of the 1st Embodiment of this invention is demonstrated.

  The electric tool 300 is an application of the present invention to a grinder of a type whose output shaft rotates. The housing 302 includes a first housing 22 and a second housing 321. An operation switch 323 is provided at the rear end of the first housing 22, and a mounting portion 324 projects downward from the lower surface of the second housing 321. The output shaft 351 protrudes downward from the approximate center of the lower surface of the mounting portion 324, and a tool attachment portion 355 is provided at the lower end portion of the output shaft 351. The tip tool 90 can be attached to the tool attachment portion 355 by attaching the disc-shaped tip tool 90 to the tool attachment portion 355 and screwing the female screw portion formed at the center of the washer 356 with the male screw 352 of the output shaft. . Further, a protective portion 91 is formed so as to cover the rear side of the tip tool 90 from the lower surface of the second housing 321.

  The mounting portion 324 of the electric power tool 300 has the same configuration as the mounting portion 24 of the electric power tool 1 and is formed so that the guide 10 can be mounted. For this reason, the processing depth by the tip tool 90 can be adjusted, workability can be improved, and the guide 10 can be hooked on the external member.

  With reference to FIG.10 (b), the electric tool 400 which is the modification 3 of the 1st Embodiment of this invention is demonstrated.

  The electric power tool 400 is configured by changing the housing 2 of the electric power tool 1 to the housing 402. The housing 402 includes a first housing 422 and a second housing 21. Further, a battery pack 407 is detachably provided below the rear portion of the first housing 422, and a secondary battery (not shown) is accommodated in the battery pack 407. A fitting portion (not shown) that can be fitted to the battery pack 407 is formed on the lower end of the rear end portion of the first housing 422, and the first portion is fitted with the fitting portion and the battery pack 407. A control circuit unit (not shown) in the housing 422 and the battery pack 407 are electrically connected. By using the battery pack 407 as a power source, the electric power tool 400 can be used at a work site where a commercial power source cannot be used.

  With reference to Fig.11 (a) and (b), the electric tool 500 which is the modification 4 of the 1st Embodiment of this invention is demonstrated.

  The power tool 500 is configured by changing the housing 2 of the power tool 1 to a housing 502. The housing 502 is composed of a first housing 22 and a second housing 521. A hole that can be screwed with the mounting screw 510D is formed on the upper side surface and the right side surface of the second housing 521, and the mounting screw 510D is screwed into the hole via the notch 10b of the guide 10. The guide 10 can be attached to the housing 502. As described above, the electric power tool 500 can mount the guides at the three positions of the mounting portion 24, the upper side surface and the right side surface of the second housing 521. For this reason, according to the work situation, the user can select one of the mounting portion 24, the upper side surface, and the right side surface to mount the guide 10, and workability can be improved. Moreover, it is good also as a structure which can form the hole which can be screwed together with the attachment screw 510D in either one of a right side surface or an upper side surface, and can attach the guide 10. FIG.

  A second embodiment of the present invention will be described with reference to FIGS.

  As illustrated in FIG. 13A, the housing 602 of the electric power tool 600 includes a first housing 622 and a second housing 21. The first housing 622 has a first exhaust hole 622a and a second exhaust hole 622b (FIG. 13B). The intake port is formed on the rear side of the first housing 622 (near the power cord 7). The opening / closing member 13 is housed inside the first housing 622 so as to be slidable in the front-rear direction. Further, the opening / closing member 13 is connected to the guide 12.

  The first exhaust hole 622a is a rectangular long hole extending in the vertical direction, and is formed at a position overlapping the left side surface and the front side of the right side surface of the first housing 622 when viewed from the horizontal direction. The second exhaust hole 622b is a rectangular long hole extending in the left-right direction, and is formed so as to overlap the front part of the upper side surface and the lower side surface of the first housing 622 when viewed in the vertical direction. Further, the positions of the first exhaust hole 622a and the second exhaust hole 622b in the front-rear direction are the same.

  As shown in FIGS. 12A to 12D, the opening / closing member 13 has a substantially cylindrical shape extending in the front-rear direction, and includes a left side surface 13A, a lower side surface 13B, a right side surface 13C, and an upper side surface 13D. Is stipulated. A rectangular communication hole 13a and a communication hole 13c extending in the vertical direction are formed in the front part of the left side surface 13A and the right side surface 13C, and the lower side surface 13B, the upper side surface 13D and the rear part are formed in the left and right direction. An extending rectangular communication hole 13b and a communication hole 13d are formed. Further, the communication holes 13a and 13c are substantially the same in shape as the first exhaust hole 622a, and the communication holes 13b and 13d are substantially the same as the second exhaust hole 622b.

  The guide 12 includes a guide base portion 12A, a workpiece contact portion 12B, and a folded portion 12C, and has a hook shape in a side view.

  As shown in FIGS. 12C and 12D, the guide base portion 12A has a flat plate shape extending in the front-rear direction, and the thickness in the vertical direction is substantially equal to the length in the vertical direction of the guide fitting portion 24A. It is configured. The guide base 12A is formed with a through hole 12a, a mounting long hole 12b, and a connection hole (not shown). The through hole 12a is formed in the shape of the outer shape of a circular shape and a rectangular shape that overlap each other at the approximate center of the guide base portion 12A. The circular portion of the through-hole 12a is configured to have a radius larger than the radius of the mounting portion 24, and the width of the rectangular portion in the left-right direction is that when the guide fitting portion 24A is viewed from the bottom. It is configured to be slightly larger than the width of two opposing sides of the octagon.

  The mounting long hole 12b is a long hole extending in the front-rear direction, and is formed behind the through hole 12a. Connection holes (not shown) are formed on the right and left sides of the rear end of the guide base 12A.

  As shown in FIGS. 12A and 12B, the workpiece contact portion 12B extends upward at a substantially right angle from the front end edge of the guide base portion 12A, and is formed in a flat plate shape integrally with the guide base portion 12A. Has been. As shown in FIG. 12A, the folded portion 12C extends rearward from the upper end edge of the workpiece contact portion 12B, and is formed in a flat plate shape integrally with the workpiece contact portion 12B. ing.

  As shown in FIG. 13B, the guide 12 and the opening / closing member 13 are connected by a connecting member 13 </ b> E through a connection hole (not shown) in a state where the opening / closing member 13 is housed in the first housing 622. . For this reason, by sliding the guide 12 with respect to the mounting portion 24, the opening / closing member 13 slides within the first housing 622 in the front-rear direction within the range of the length in the front-rear direction of the mounting long hole 12b.

  As shown in FIGS. 13A and 13B, the opening and closing connected to the guide 12 when the guide 12 is slid forward in the maximum direction with respect to the mounting portion 24 (hereinafter referred to as a first slide position). The member 13 is positioned at the front end portion inside the first housing 622. In the first slide position, the second exhaust hole 622b of the first housing 622 and the communication holes 13b and 13d of the opening / closing member 13 overlap each other when viewed from above and below, and the interior of the first housing 622 is within the second exhaust hole 622b. The communication holes 13b and 13d communicate with the outside. On the other hand, in the first slide position, the first exhaust hole 622a of the first housing 622 and the communication holes 13a and 13c of the opening / closing member 13 are displaced in the front-rear direction, and the first exhaust hole 622a is on the left side of the opening / closing member 13, respectively. It is closed by the surface 13A and the right side 13C. For this reason, in the first slide position, the exhaust air is discharged in the vertical direction.

  When the guide 12 is slid backward in the maximum direction with respect to the mounting portion 24 (hereinafter referred to as a second slide position), the first exhaust hole 622a of the first housing 622 and the communication holes 13a and 13c of the opening / closing member 13 are used. The first housing 622 communicates with the outside through the first exhaust hole 622a and the communication holes 13a and 13c. On the other hand, in the second slide position, the second exhaust hole 622b of the first housing 622 and the communication holes 13b and 13d of the opening / closing member 13 are displaced in the front-rear direction, and the second exhaust hole 622b is below the opening / closing member 13, respectively. The side surface 13B and the upper side surface 13D are closed. For this reason, at the second slide position, the exhaust air is discharged in the left-right direction.

  According to such a structure, since the guide 10 has a hook part, the electric tool 1 can be hooked on a protrusion, a belt, a stepladder or the like of a scaffold. For this reason, when the work is temporarily interrupted or when the user takes a break, the user can simply place the power tool 1 on the external member 800 to temporarily place the work, thereby improving work efficiency. Moreover, in the work site where traffic of people and things is intense, it is possible to prevent the electric tool 1 from getting in the way by hooking the electric tool 1 to an external member. Furthermore, since the processing guide 10 can be attached to the electric tool 1 only when necessary, workability is improved. Furthermore, since the guide 10 can be mounted, the processing accuracy is improved.

  According to such a configuration, since the output shaft 51 protrudes from the mounting portion 24, the distance between the tip tool 9 attached to the output shaft 51 and the guide 10 is reduced, and the guide 10 is pressed against the workpiece W. Compared with the case where the distance between the tip tool 9 and the guide 10 is long, the stability of the work is improved. Further, since the guide 10 can be mounted on the mounting portion 24 at a plurality of positions rotated around the output shaft 51, it is possible to cope with processing with an angle with respect to the workpiece W. Performance and workability are improved.

  According to such a configuration, since the guide 10 can be mounted at a user's desired angle, it is possible to respond to various work modes and the work width is widened.

  According to such a configuration, the depth of cut when the tip tool 9 processes the workpiece W can be adjusted. For this reason, it is possible to process at a desired depth when processing a thin workpiece W or by specifying a depth of cut.

  According to such a configuration, the slide position of the guide 12 can be used when the exhaust air, chips, or the like that are hot hit the face or the like and are uncomfortable or when it is desired to change the direction of the exhaust air according to the work mode. Since the exhaust air coming out from the exhaust hole can be adjusted simply by changing the operating efficiency, work efficiency and comfort are improved.

  According to such a configuration, when exhaust air from the first exhaust hole 622a is blocked and exhaust air is to be emitted from the second exhaust hole 622b, or exhaust gas from the second exhaust hole 622b is blocked and the first exhaust hole is blocked. When exhaust air is desired to be emitted from 622a, the hole from which exhaust air is emitted can be changed simply by changing the slide position of the guide 12.

  According to such a configuration, the hook portion for hooking the guide 10 on the rod-like external member 800 can be formed easily and inexpensively, so that the cost can be reduced.

  According to such a configuration, the hooking hole 10c, which is a hooking part for hooking the guide 10 to the external member 830 having a protrusion, can be easily and inexpensively formed, so that the cost can be reduced.

  According to such a configuration, since the center of gravity G is located below the hook portion in a state where the electric power tool 1 is hooked on the external member 800, the electric power tool 1 does not tilt and the electric power tool 1 is hooked. It can be arranged in an orderly manner when stored, and the storage property is improved.

  According to such a configuration, since the guide for machining guidance can be mounted on the electric tool 1 in which the tip tool 9 vibrates, it is possible to guide the machining direction, adjust the machining depth, etc. The workability of the vibrating electric tool can be improved.

  The power tool according to the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the gist of the invention described in the claims, for example.

  In the first embodiment, the guide fitting portion 24A has a substantially regular octagonal shape in a sectional view, but may have a regular hexagonal shape or a circular shape. Thus, in the case of a regular hexagon, the guide can be mounted on the electric tool at a position rotated every 60 ° around the mounting portion. In the case of a circular shape, the guide is further extended in the extending direction of the guide with respect to the housing. A degree of freedom can be given.

1, 200, 300, 400, 500, 600 ... Electric tool 2, 302, 402, 502, 602 ... Housing 3 ... Motor 4 ... Vibration conversion mechanism 6 ... Fan 9, 90 ... Tip tool 10, 11, 12... Guide 10 c... Hooking holes 10 A, 11 A, 12 A.. Guide bases 10 B, 11 B and 12 B.・ Installation part 31 ・ Rotating shafts 51 and 351 ・ Output shaft 622 a ・ First exhaust hole 622 b ・ Second exhaust hole 800 ・ Handrail,
830 ・ ・ Protrusion G ・ ・ Center of gravity W ・ ・ Workpiece

Claims (8)

A housing that houses the drive source;
An output shaft that protrudes from the housing, is driven by the drive source, and to which a tip tool is detachably attached;
A guide that is detachably attached to the housing so as to extend in a direction intersecting the axial direction of the output shaft, and that guides the machining by the tip tool in a state of being in contact with the workpiece,
The housing is provided with a mounting portion to which the guide can be mounted,
The guide has a workpiece contact portion that contacts the workpiece during work,
The tip tool protrudes from the workpiece contact portion in the extending direction of the guide,
An electric tool characterized in that a space surrounded by the workpiece contact portion is formed in the guide. The output shaft protrudes from the mounting portion,
The power tool according to claim 1, wherein the guide can be mounted on the mounting portion at a plurality of positions where the guide is rotated around the output shaft.   The electric tool according to claim 1, wherein the guide can be mounted on the mounting portion at a plurality of positions obtained by rotating the guide around the mounting portion.   The guide is slidable within a predetermined range in the extending direction of the guide with respect to the mounting portion, and can be mounted on the mounting portion at a plurality of slide positions within the range. Item 4. The electric tool according to any one of Items 1 to 3. The guide has at least two rod-shaped portions extending in the same direction, and a mounting piece that can be mounted on the mounting portion,
One end of the rod-shaped part is connected to the mounting piece,
The other end of the rod-shaped part, power tool according to any one of claims 1 to 4, characterized in that it is connected to said pressurized Industrial Materials abutment. The drive source has a rotation axis;
In the housing, a vibration conversion mechanism is provided for vibrating the tip tool by converting the rotational force of the rotating shaft into the reciprocating rotational motion of the output shaft,
The power tool according to any one of claims 1 to 5, wherein the workpiece is processed by vibration of the tip tool.   The power tool according to any one of claims 1 to 6, wherein the guide has a hook portion that can be hooked to an external member.   The workpiece contact portion extends in a direction intersecting the extending direction of the guide,
  The guide further includes a folded portion extending from the workpiece contact portion so as to be close to the output shaft,
  The electric tool according to claim 7, wherein the hook portion includes the workpiece contact portion and the folded portion.

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