JP2018202520A - Reciprocation tool - Google Patents

Abstract

To provide a reciprocation tool which can be easily fixed in a state that a blade tilts at a predetermined angle with respect to an axial line of an output shaft.SOLUTION: A reciprocation tool includes a housing 2, a motor 3 housed in the housing 2, a gear part 6 which is housed in the housing 2 and coverts torque of the motor 3 into reciprocation in a longitudinal direction, a plunger 7 which has an axial line A extending in the longitudinal direction and reciprocates in the longitudinal direction, and a blade mounting part 8 on which a blade P can be mounted. The blade P includes a mounted part P2 mounted on the blade mounting part 8, and a blade part P1. The blade part P1 has a plurality of blades including a rear end blade P11 positioned in a closest position to the blade mounting part 8, a front end blade P12 positioned in the most distant position from the blade mounting part 8. The blade mounting part 8 is structured so as to fix the mounted part P2 in a state that a virtual straight line connecting a blade edge of the rear end blade P11 and a blade edge of the front end blade P12 tilts at a predetermined angle with respect to the axial line A.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a reciprocating tool.

  2. Description of the Related Art Conventionally, a reciprocating tool whose tip tool is a saw blade has been widely used as an electric tool for cutting wood, steel, metal pipes, etc. (material to be cut). Such a reciprocating tool employing a saw blade as a tip tool includes a housing, a motor built in the housing, a long plunger supported so as to be reciprocable in the housing, and a rotary motion of the motor as a plunger. There is known a saver saw having a motion conversion mechanism for converting into a reciprocating motion in the axial direction, and a blade holding portion which is located on the front side in the housing and holds the rear end portion of the linear blade on the front end side of the plunger. (See Patent Document 1).

  In such a reciprocating tool, the blade holding portion can hold the rear end portions of various blades, and the blades are configured to be detachable. In such a reciprocating tool, the blade is preferably fixed in a state inclined to a certain degree (predetermined angle) with respect to the axis of the plunger in order to cut into the workpiece.

Japanese Patent No. 3998689

  In the reciprocating tool as described above, the size of the portion of the blade holding portion where the rear end portion of the blade is held is formed with a margin in order to correspond to various blades. For this reason, when a small blade is attached, rattling occurs when the blade is pressed against the material to be cut, and the blade cannot be maintained at a predetermined angle with respect to the axis of the plunger. There was a possibility that it would slip without cutting into the cutting material and hinder the cutting work.

  Accordingly, an object of the present invention is to provide a reciprocating tool that can be used for various types of blades and can be easily fixed in a state where the blades are inclined at a predetermined angle with respect to the axis of the output shaft.

  In order to solve the above-described problems, the present invention provides a housing, a motor housed in the housing, a power conversion mechanism housed in the housing and converting a rotational force of the motor into a reciprocating motion in a first direction, An output shaft supported in a reciprocating manner in the housing, having an axis extending in the first direction, driven by the power conversion mechanism and reciprocating in the first direction, and moving integrally with the output shaft; A mounting portion that is positioned on the opposite side of the motor with respect to the output shaft and capable of mounting a tip tool, the tip tool having a mounting portion to be mounted on the mounting portion, and the mounting portion being the mounting portion. A blade portion extending from the mounted portion toward the non-motor side in a state of being mounted on the first blade, the blade portion being positioned closest to the mounting portion, and a position furthest from the mounting portion A second blade located at The mounting portion fixes the mounting portion in a state where a virtual straight line connecting the cutting edge of the first blade and the cutting edge of the second blade is inclined at a predetermined angle with respect to the first direction. A reciprocating tool characterized by being configured to be provided is provided.

  According to the reciprocating tool having the above configuration, the tip tool can be fixed in a state inclined at a predetermined angle with respect to the axis of the output shaft, so that the blade slips without cutting into the material to be cut during the cutting operation. Therefore, the cutting operation can be suitably performed.

The distance between the cutting edge of the second blade and the axis is preferably longer than the distance between the cutting edge of the first blade and the axis.

  According to such a configuration, the cutting edge of the tip tool can be maintained in a state where it is inclined at a predetermined angle in the direction in which the operator cuts the axis of the output shaft, so that the cutting operation can be performed suitably.

  Further, in the tip tool, the mounted portion is formed in a flat plate shape, and the mounted portion has a second direction perpendicular to the first direction and the thickness direction of the mounted portion. A through hole penetrating in the direction is formed, the mounting portion has a holding pin that has an axial center extending in the second direction and can be inserted into the through hole, and the holding pin is inserted into the through hole. It is preferable that the mounted portion is fixed so as not to rotate about the axis of the holding pin.

  According to such a configuration, the mounted portion of the tip tool is fixed to the mounting portion so as not to rotate. As a result, the tip tool can be fixed in a state inclined at a predetermined angle with respect to the axis of the output shaft, so that it is possible to prevent the blade from slipping into the material to be cut during the cutting operation. It becomes possible to perform the cutting work.

  The mounting portion includes a cylindrical portion extending in the first direction, and the cylindrical portion includes a first portion and a second portion located on opposite sides with respect to an axis of the cylindrical portion. The first portion preferably has a first rotation restricting portion that cooperates with the second portion to fix the mounted portion so as not to rotate about the axis of the holding pin.

  According to such a configuration, since the first rotation restricting portion and the second portion cooperate to fix the base portion of the tip tool so as not to rotate, the tip tool is inclined at a predetermined angle with respect to the axis of the output shaft. Therefore, the blade can be prevented from slipping without cutting into the material to be cut during the cutting operation, and the cutting operation can be suitably performed.

  The second portion preferably has a second rotation restricting portion that cooperates with the first portion to fix the mounted portion so as not to rotate about the axis of the holding pin.

  According to such a configuration, since the second rotation restricting portion and the first portion cooperate to fix the mounted portion of the tip tool so as not to rotate, the tip tool is predetermined with respect to the axis of the output shaft. Since it can fix in the state inclined at an angle, it is suppressed that a braid | blade slips without biting into to-be-cut | disconnected material at the time of a cutting operation, and it becomes possible to perform a cutting operation suitably.

  Further, it is preferable that the first portion and the second portion are configured symmetrically with respect to the axis of the cylindrical portion.

  According to such a configuration, the tip tool can be used by being turned upside down, which is excellent in convenience.

  The first portion includes a first groove extending in the first direction and recessed in a third direction orthogonal to the first direction and the second direction, and the first rotation restricting portion includes: The second groove is provided at an end of the first groove on the motor side, and a second groove extending in the first direction and recessed in the third direction is formed in the second portion. It is preferable that the second rotation restricting portion is inserted into the first groove and the second groove, and is provided at an end of the second groove on the motor side.

  According to such a configuration, since the tip tool can be easily fixed at a predetermined angle with respect to the axis of the output shaft by providing a groove in the cylindrical portion, the blade can be cut at the time of cutting work. Therefore, it is possible to suitably perform the cutting operation by preventing the slipping without being digged into the surface.

  The first rotation restricting portion is a first protrusion protruding from an inner periphery of the cylindrical portion in a third direction orthogonal to the first direction and the second direction, and the second rotation restricting portion is The second protrusion protrudes from the inner periphery of the cylindrical portion in the third direction, and the first protrusion and the second protrusion are closer to the output shaft than the holding pin in the first direction. Preferably it is located.

  According to such a configuration, since the tip tool can be easily fixed at a predetermined angle with respect to the output shaft by providing the protrusion, the blade does not bite into the workpiece during the cutting operation. Therefore, it is possible to perform the cutting operation suitably.

  The first rotation restricting portion and the second rotation restricting portion preferably have an inclined surface that inclines in a direction away from the axis of the cylindrical portion as it goes away from the output shaft.

  According to such a configuration, by providing the inclined surface, the tip tool can be easily fixed at a predetermined angle with respect to the axis of the output shaft. Therefore, it is possible to perform the cutting operation suitably. Further, it is possible to disperse the stress applied to the cylindrical portion as compared with the case where the protrusion restricts the rotation of the mounted portion of the tip tool.

  The mounting portion includes a cylindrical portion that extends in the first direction and a rotation restricting portion that protrudes inward in the radial direction of the cylindrical portion, and the rotation restricting portion is disposed on a motor side of the cylindrical portion. It is preferably fixed.

  According to such a configuration, the tip tool can be easily fixed at a predetermined angle with respect to the axis of the output shaft by providing a rotation restricting portion separately from the cylindrical portion. It is possible to suppress the blade from slipping without cutting into the material to be cut, and to perform a cutting operation suitably.

  According to the reciprocating tool of the present invention, the blade can be easily fixed in a state where the blade is inclined at a predetermined angle with respect to the axis of the output shaft.

It is a right view which shows the external appearance of the saver saw which concerns on the 1st Embodiment of this invention, and has shown the time of braid | blade non-mounting. It is a cross-sectional side view which shows the internal structure of the saver saw which concerns on the 1st Embodiment of this invention, and has shown the time of blade mounting | wearing. It is a disassembled perspective view which shows the plunger and blade mounting part of a saver saw which concern on the 1st Embodiment of this invention. It is a side view which shows an example of the braid | blade with which the braid | blade mounting part of the saver saw which concerns on embodiment of this invention is mounted | worn. It is a front view which shows the sleeve of the blade mounting part of the saver saw which concerns on the 1st Embodiment of this invention. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5 and shows a state where a blade is inserted into a sleeve. It is a front view which shows the sleeve of the blade mounting part of the saver saw which concerns on the 2nd Embodiment of this invention. It is the VIII-VIII sectional view taken on the line of FIG. 7, and has shown the state in which the braid | blade was inserted in the sleeve. It is a front view which shows the sleeve of the blade mounting part of the saver saw which concerns on the 3rd Embodiment of this invention. FIG. 10 is a cross-sectional view taken along line XX in FIG. 9 and shows a state where a blade is inserted into a sleeve. It is a front view which shows the sleeve of the blade mounting part of the saver saw concerning the 4th Embodiment of this invention, a 1st rotation control member, and a 2nd rotation control member. FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. 11, showing a state where a blade is inserted into a sleeve.

  Hereinafter, a saver saw 1 as an example of a reciprocating tool according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 6.

The saver saw 1 is an electric reciprocating cutting tool for cutting wood, steel, pipes, etc. (material to be cut). As shown in FIGS. 1 and 2, the saver saw 1 has a housing 2, a motor 3, a control board 4, a controller unit 5, a gear unit 6, a plunger 7, and a blade P that can be attached and detached. And a blade mounting portion 8. In the following description, unless otherwise stated, the description is based on the state where the blade P is attached to the saver saw.

  In the following description, “up” shown in FIG. 1 is defined as an upward direction, “down” is defined as a downward direction, “front” is defined as a forward direction, and “rear” is defined as a backward direction. Further, when the saver saw 1 is viewed from the rear, “right” is defined as the right direction, and “left” is defined as the left direction. References to dimensions, numerical values, and the like in this specification include not only dimensions and numerical values that completely match the dimensions and numerical values, but also substantially matching dimensions and numerical values (for example, within the range of manufacturing errors). ). Similarly for “identical”, “perpendicular”, “parallel”, “match”, “same”, “symmetric”, etc., “substantially identical”, “substantially orthogonal”, “substantially parallel”, “substantially match”, “ It includes “substantially flush” and “substantially symmetrical”.

  As shown in FIG. 2, the housing 2 includes a motor housing 21, a handle housing 22, and a gear housing 23.

  The motor housing 21 and the handle housing 22 are made of, for example, resin, and are configured as divided housings divided by dividing surfaces (virtual surfaces) that pass through the center of the housing 2 in the left-right direction and are orthogonal to the left-right direction. The divided right side portion and left side portion are substantially symmetrical with respect to the dividing plane.

  As shown in FIGS. 1 and 2, the motor housing 21 includes a cylindrical portion 211, a first extending portion 212, and a second extending portion 213.

  The cylindrical portion 211 has a substantially cylindrical shape extending in the front-rear direction, and accommodates the motor 3 and the control board 4. An intake port 211a is formed in the rear part of the cylindrical part 211, and an exhaust port 211b is formed in the front part. A hook 211 </ b> A for hanging on a ladder or a scaffold is provided on the upper portion of the cylindrical portion 211 in the substantially center in the front-rear direction.

  The first extending portion 212 has a substantially cylindrical shape that extends downward from the lower end of the rear portion of the cylindrical portion 211.

  The second extending portion 213 extends rearward from the rear end of the first extending portion 212, and has a battery connecting portion 213A to which the battery pack Q can be connected at the lower end. As shown in FIG. 2, the battery connection portion 213A has a battery connection terminal portion 213B that is connected to the terminal portion Q1 of the battery pack Q in a state where the battery pack Q is connected.

  As shown in FIGS. 1 and 2, the handle housing 22 has a substantially U-shape when viewed from the side, and is located behind the motor housing 21. The handle housing 22 has a grip portion 221, a first connection portion 222, and a second connection portion 223.

  The grip portion 221 is a portion that is gripped by an operator during work. The grip portion 221 extends in the vertical direction, and a manually operable trigger 22 </ b> A for controlling start and stop of the motor 3 is provided at an upper front portion thereof. The first connection part 222 extends forward from the upper part of the grip part 221. The second connection part 223 extends forward from the lower part of the grip part 221.

  The gear housing 23 is made of, for example, metal, and has a substantially funnel shape extending forward from the front end of the cylindrical portion 211 of the motor housing 21 and reducing in diameter toward the front as shown in FIGS. 1 and 2. There is no. The gear housing 23 accommodates the gear portion 6, the plunger 7, and the blade mounting portion 8. The outer peripheral surface of the gear housing 23 is covered with a resin cover 24. At the front of the gear housing 23, a manually operable lever 23 </ b> A for attaching and detaching the blade P is provided and exposed on the surface of the cover 24. The lever 23A has a claw (not shown). In addition, a base 23B is provided at the front end of the gear housing 23 so as to abut against the material to be cut during cutting work.

  The motor 3 shown in FIG. 2 is a DC brushless motor, and has a rotating shaft 31 extending in the front-rear direction. The rotating shaft 31 is rotatably supported by the housing 2 via a bearing 31A and a bearing 31B. A pinion 32 is provided at the front end of the rotating shaft 31. A fan 33 that rotates coaxially with the rotary shaft 31 is fixed behind the pinion 32.

  The control board 4 has a substantially ring shape when viewed from the front, and is provided behind the motor 3. On the control board 4, a Hall element 41 for detecting the position of the rotation shaft 31 of the motor 3 and six FETs 42 for controlling the motor 3 are provided.

  The controller unit 5 includes a control box 51 and a panel 52.

  The control box 51 has a substantially rectangular parallelepiped shape and is disposed in the first extension portion 212 of the motor housing 21. The control box 51 selectively outputs a drive signal to the six FETs 42 in accordance with a user operation on the trigger 22A and a signal output from the Hall element 41, and controls the rotation direction and rotation speed of the motor 3. The control board portion is accommodated. The control board unit is configured by, for example, a microcomputer and a drive signal output circuit.

  The panel 52 extends rearward and upward from the control box 51. A display unit that can be visually recognized by the operator is provided on an end surface of the panel 52 in the extending direction, and the operator confirms the battery remaining amount display, the cutting speed display, and the like displayed on the display unit, and trigger 22A. Can be operated.

  As shown in FIG. 2, the gear portion 6 is accommodated in the gear housing 23, interposed between the motor 3 and the plunger 7, and converts the rotational force of the motor 3 into a reciprocating motion in the front-rear direction. It is. The gear unit 6 includes a bevel gear 61, a pin 62, a needle bearing 63, and a connector 64. The gear unit 6 is an example of the “power conversion mechanism” in the present invention. The front-rear direction is an example of the “first direction” in the present invention.

  The bevel gear 61 is disposed in the gear housing 23 and meshes with the pinion 32 of the motor 3. The bevel gear 61 has a rotary shaft 61A in the vertical direction orthogonal to the axial direction of the rotary shaft 31 of the motor 3, that is, the front-rear direction.

  The pin 62 has a substantially cylindrical shape extending in the vertical direction. The lower part of the pin 62 is fixed by press-fitting at a position eccentric with respect to the rotating shaft 61A of the bevel gear 61. The upper part of the pin 62 protrudes upward from the upper surface of the bevel gear 61.

  The needle bearing 63 is a bearing attached to the upper part of the pin 62.

  The connector 64 is disposed above the pin 62 and is fixed to the plunger 7. A guide groove 64 a extending in the left-right direction and recessed upward is formed in the lower portion of the connector 64. The guide groove 64 a is formed such that the width in the front-rear direction is slightly larger than the diameter of the pin 62. An upper portion of the pin 62 is accommodated in the guide groove 64 a via a needle bearing 63. The connector 64 restricts movement of the pin 62 in the front-rear direction and allows movement in the left-right direction.

  As shown in FIG. 2, the plunger 7 is supported in the gear housing 23 and has a substantially cylindrical shape having an axis A (see FIG. 3) extending in the front-rear direction. The plunger 7 is driven by the gear portion 6 and is configured to reciprocate in the front-rear direction. The plunger 7 reciprocates integrally with the connector 64 in the front-rear direction. The plunger 7 is an example of the “output shaft” in the present invention. The axis A is an example of the “axis” in the present invention.

  The blade mounting portion 8 is provided at the front end portion of the plunger 7 and is configured to be able to mount the blade P. The blade mounting portion 8 reciprocates integrally with the plunger 7 and is located on the opposite side of the motor 3 with respect to the plunger 7. As shown in FIG. 3, the blade mounting portion 8 mainly includes a slit portion 81, a cover 82, a spring 83, a sleeve 84, a pin 85, a blade holding pin 86, and a blade holder 87. Have. The blade mounting portion 8 is an example of the “mounting portion” in the present invention.

  The slit portion 81 is provided at the front end portion of the plunger 7 and has a substantially cylindrical shape extending in the front-rear direction. The slit portion 81 is formed with a slit 81 a extending in the front-rear direction so as to form openings in the upper portion, the lower portion, and the front portion of the slit portion 81. The mounted portion P2 of the blade P is inserted into the slit 81a (see FIG. 4).

  The cover 82 has a substantially cylindrical shape and extends in the front-rear direction. An annular portion 82A having a substantially annular shape when viewed from the front is provided at the rear portion of the cover 82. The inner diameter of the annular portion 82 </ b> A is formed to be the same as the outer diameter of the slit portion 81. The annular portion 82A (cover 82) is fitted into the slit portion 81 from the front. The cover 82 is fixed to the slit portion 81 in a state where the backward movement is restricted by the stopper 8A.

  The spring 83 is a torsion spring and extends in the front-rear direction. The spring 83 is accommodated in the cover 82. The rear end of the spring 83 is seated on the front surface of the annular portion 82 </ b> A of the cover 82. The front end portion of the torsion spring is engaged with the blade holder 87.

  As shown in FIG. 3, the sleeve 84 has a substantially cylindrical shape extending in the front-rear direction. The sleeve 84 has an axis extending in the front-rear direction coaxial with the axis A. The inner diameter of the sleeve 84 is configured to be the same as the outer diameter of the slit portion 81. The sleeve 84 is fitted into the slit portion 81 from the front. Further, the sleeve 84 is formed with a first groove 841a and a second groove 842a extending in the front-rear direction (see FIG. 5), and the mounted portion P2 of the blade P is inserted into the first groove 841a and the second groove 842a. (See FIG. 6). Details of the sleeve 84 will be described later. The sleeve 84 is an example of the “cylindrical portion” in the present invention.

  The pin 85 has a cylindrical shape extending in the left-right direction. The pin 85 is inserted into the hole 84 a formed on the side surface of the sleeve 84 and then inserted into the hole 81 b formed on the side surface of the slit portion 81. As a result, the sleeve 84 is fixed so as not to rotate relative to the slit portion 81.

  The blade holding pin 86 extends in the left-right direction, and the left end portion and the right end portion thereof are formed in a conical shape. The blade holding pin 86 is inserted through a hole 84 c formed in the side surface of the sleeve 84. The blade holding pin 86 is an example of the “holding pin” in the present invention.

  The blade holder 87 has a substantially cylindrical shape and is urged by a spring 83 in a counterclockwise direction when viewed from the front. The inner diameter of the blade holder 87 is configured to be larger than the outer diameter of the sleeve 84. A sleeve 84 is inserted into the blade holder 87. In this state, the tip end portion of the sleeve 84 projects forward from the tip end of the blade holder 87, and is larger than the inner diameter of the blade holder 87 in a groove 84 b formed at the tip end portion of the sleeve 84 so as to extend in the circumferential direction of the sleeve 84. The forward movement of the blade holder 87 is restricted by fitting the stopper 8B having an outer diameter. The blade holder 87 has a claw 87A.

  As shown in FIG. 4, the blade P has a blade portion P1 and a mounted portion P2. The blade P is an example of the “tip tool” in the present invention.

  The blade portion P1 extends from the mounted portion P2 to the non-motor side and has a plurality of blades including a rear end blade P11 and a front end blade P12.

  The rear end blade P11 is located at the position closest to the blade mounting portion 8, and the front end blade P12 is located at the position farthest from the blade mounting portion 8. A plurality of blades are arranged at a predetermined pitch in the front-rear direction between the rear end blade P11 and the front end blade P12. The rear end blade P11 is an example of the “first blade” in the present invention. The front end blade P12 is an example of the “second blade” in the present invention.

  The mounted portion P2 is formed in a flat plate shape extending in the front-rear direction and the up-down direction. The mounted portion P2 has a base portion P21 and an extending portion P22.

  The base P21 is formed in a flat plate shape that extends in the front-rear direction and the up-down direction. A through hole P2a penetrating in the left-right direction, which is perpendicular to the front-rear direction and is the thickness direction of the base P21 (mounted portion P2), is formed in the rear portion of the base P21. The blade holding pin 86 of the blade mounting portion 8 is inserted through the through hole P2a (see FIG. 3). The left-right direction is an example of the “second direction” in the present invention. The through hole is an example of the “through hole” in the present invention.

  The extending part P22 is formed in a flat plate shape extending backward from the rear end of the lower part of the base part P21.

  A first contact surface P2A is defined on the upper surface of the base P21, and a second contact surface P2B is defined on the lower surface. A third contact surface P22A that is flush with the second contact surface P2B is defined on the lower surface of the extension portion P22. The first contact surface P2A and the second contact surface P2B extend in the front-rear direction and are defined parallel to each other. Further, a concave surface P3 having a predetermined curvature is defined continuously from the front ends of the first contact surface P2A and the second contact surface P2B. Various shapes of the blade (the distance between the first contact surface P2A and the second contact surface P2B, the position of the through hole P2a, and the like) are conceivable.

  Here, the operation of mounting the blade P on the blade mounting portion 8 by the operator will be briefly described.

  When the blade P is mounted on the blade mounting portion 8, the operator performs a pulling operation so that the lever 23A exposed on the right side surface of the cover 24 is tilted to the right (turned counterclockwise). . At this time, the claw (not shown) of the lever 23A and the claw 87A of the blade holder 87 are engaged. When the lever 23A is further tilted to the right from this state, the blade holder 87 rotates in the clockwise direction when viewed from the front, and the blade mounting portion 8 switches to a state where the blade P can be attached or detached (attachable). The operator inserts the mounted portion P2 of the blade P into the slit 81a and the first groove 841a and the second groove 842a of the sleeve 84, and releases the pulling operation on the lever 23A. In this state, the blade holder 87 is urged counterclockwise in the front view by the spring 83, and at the same time, the blade holding pin 86 is inserted into the through hole P2a of the blade P to hold the blade P in a non-detachable manner.

  Next, details of the sleeve 84 will be described with reference to FIGS. 5 and 6 while referring to the relationship with each component of the blade P. FIG. FIG. 5 is a front view of the sleeve 84. 6 is a cross-sectional view taken along line VI-VI in FIG. 5 and shows a state in which the blade P is inserted into the sleeve 84.

  As shown in FIGS. 5 and 6, the sleeve 84 has a first portion 841 and a second portion 842. The first portion 841 and the second portion 842 are located opposite to each other with respect to the axial center of the sleeve 84 and are configured symmetrically with respect to the axial center of the sleeve 84. The first portion 841 is located at the lower portion of the sleeve 84, and the second portion 842 is located at the upper portion of the sleeve 84. The first portion 841 is formed with a first groove 841a extending in the front-rear direction, and the second portion 842 is formed with a second groove 842a extending in the front-rear direction. The first portion 841 has a first rotation restricting portion 841A, and the second portion 842 has a second rotation restricting portion 842A. A convex surface 84A having a predetermined curvature is defined at the front end of the sleeve 84. The first part is an example of the “first part” in the present invention. The second part is an example of the “second part” in the present invention. A 1st rotation control part is an example of the "1st rotation control part" in this invention. A 2nd rotation control part is an example of the "2nd rotation control part" in this invention.

  The first groove 841 a and the second groove 842 a extend in the front-rear direction and are recessed from the inner periphery of the sleeve 84 toward the radially outer side of the sleeve 84. In other words, the first groove 841a is recessed upward, and the second groove 841b is recessed downward. The width in the left-right direction of the first groove 841 a and the second groove 842 a is configured to be the same as the width in the left-right direction of the slit 81 a of the slit portion 81. The first groove 841a is located at a position facing the lower opening of the slit 81a, and the second groove 842a is located at a position facing the upper opening of the slit 81a. A first holding surface 841B extending in the front-rear direction is defined by the bottom surface of the first groove 841a, and a second holding surface 842B extending in the front-rear direction is defined by the bottom surface of the second groove 842a. The distance between the first holding surface 841B and the second holding surface 842B is configured to be longer than the distance between the first contact surface P2A and the second contact surface P2B of the blade P. Thereby, the operator can easily insert the mounted portion P2 of the blade P into the first groove 841a and the second groove 842a. In the present embodiment, the present invention is applied to various types of blades configured such that the length between the upper surface and the lower surface of the mounted portion is shorter than the distance between the first holding surface 841B and the second holding surface 842B. Is possible. In FIG. 2, it appears that the rear end of the blade P is inserted into the sleeve 84 without any gap, but this is for the convenience of drawing, and more precisely, as shown in FIG. As shown, the distance between the first holding surface 841B and the second holding surface 842B is longer than the distance between the first contact surface P2A and the second contact surface P2B of the blade P. Therefore, when the rear end portion of the blade P is inserted into the sleeve 84, a certain gap is formed. The vertical direction is an example of the “third direction” in the present invention.

  The first rotation restricting portion 841A is provided at the rear end portion of the first groove 841a. The second rotation restricting portion 842A is provided at the rear end portion of the second groove 842a. In other words, the first rotation restricting portion 841A and the second rotation restricting portion 842A are provided at the ends of the first groove 841a and the second groove 842a on the motor 3 side, respectively. The first rotation restricting portion 841A is located at a position facing the lower opening of the slit 81a, and the second rotation restricting portion 842A is located at a position facing the upper opening of the slit 81a. The first rotation restriction portion 841A has a first rotation restriction surface 841C, and the second rotation restriction portion 842A has a second rotation restriction surface 842C.

  The first rotation restriction surface 841C and the second rotation restriction surface 842C extend in the front-rear direction and the left-right direction. The distance between the first rotation restricting surface 841C and the axis A is configured to be shorter than the distance between the first holding surface 841B and the axis A. The distance between the second rotation restricting surface 842C and the axis A is configured to be shorter than the distance between the second holding surface 842B and the axis A.

  As shown in FIG. 6, the rear end portion of the blade P is inserted into the sleeve 84. Specifically, the mounted portion P2 is connected to the first groove 841a and the first groove 841a so that the first contact surface P2A and the second contact surface P2B form a predetermined angle with respect to the axis (axis A) of the sleeve 84. It is inserted into the two grooves 842a. In the present embodiment, the first contact surface P2A and the second contact surface P2B form 3 to 4 degrees with respect to the axial center of the sleeve 84. In this state, the imaginary straight line connecting the cutting edge of the trailing edge blade P11 and the cutting edge of the leading edge blade P12 forms a predetermined angle with respect to the axis A, and the distance between the cutting edge of the leading edge blade P12 and the axis A is the trailing edge. The distance between the blade edge and the axis A is longer. In the present embodiment, the virtual straight line is inclined 3 to 4 degrees with respect to the axis A.

  At this time, as shown in FIG. 6, the first contact surface P2A contacts the second holding surface 842B. Further, the second contact surface P2B contacts the first holding surface 841B, and the third contact surface P22A contacts the first rotation restricting surface 841C of the first rotation restricting portion 841A. That is, by being supported by the sleeve 84 at three points, the mounted portion P2 (blade P) is fixed to the sleeve 84 so as not to rotate about the blade holding pin 86.

  As described above, the first portion 841 and the second portion 842 are located on the opposite sides with respect to the axial center of the sleeve 84 and are configured symmetrically with respect to the axial center of the sleeve 84. For this reason, it is possible to use the blade P upside down. In this case, the first contact surface P2A contacts the first holding surface 841B. The second contact surface P2B contacts the second holding surface 842B, and the third contact surface P22A contacts the second rotation restricting surface 842C of the second rotation restricting portion 842A. That is, also in this case, the mounted portion P2 (blade P) is fixed to the sleeve 84 so as not to be rotatable around the blade holding pin 86 by being supported at three points by the sleeve 84.

  Further, the lower convex surface 84A located at the front end of the sleeve 84 and the lower concave surface P3 of the blade P are opposed to each other by an arc surface, and the second contact surface of the blade P is within a certain range in the front-rear direction. P2B and the first holding surface 841B are in contact with each other. For this reason, compared with the case where the front-end part of the sleeve 84 is formed in a substantially rectangular shape in a side view, the stress generated on the contact surface can be preferably dispersed.

  Next, the cutting operation of the material to be cut (for example, metal pipe) using the saver saw 1 according to the present embodiment and the operation of the saver saw 1 during the cutting operation will be described with reference to the effect of providing the sleeve 84. .

  When performing the cutting operation, the operator mounts the blade P on the blade mounting portion 8 and presses the base 23B against the material to be cut. In this state, when the pulling operation is performed on the trigger 22A, the control unit of the control box 51 controls the six FETs 42, the electric power of the battery pack Q is supplied to the motor 3, and the motor 3 starts driving. When the motor 3 starts driving, the rotating shaft 31 and the pinion 32 rotate, and the bevel gear 61 that meshes with the pinion 32 rotates around the rotating shaft 61A. With the rotation of the bevel gear 61, the pin 62 performs a revolving motion around the rotation shaft 61A of the bevel gear 61 on a surface perpendicular to the vertical direction. Only the component in the front-rear direction in the revolving motion of the pin 62 is transmitted to the connector 64, and the connector 64, the plunger 7, the blade mounting unit 8, and the blade P mounted on the blade mounting unit 8 reciprocate in the front-rear direction. It is possible to cut a workpiece (not shown) by the reciprocating blade P.

  In this state, the operator presses the reciprocating blade P against the workpiece. As described above, since the blade P is fixed so as not to rotate with respect to the sleeve 84 around the blade holding pin 86, the blade P slips without cutting into the material to be cut during the cutting operation. Is suppressed, and the cutting operation can be suitably performed.

  In addition, the imaginary straight line connecting the cutting edge of the trailing edge blade P11 and the cutting edge of the leading edge blade P12 forms a predetermined angle with respect to the axis A, and the distance between the cutting edge of the leading edge blade P12 and the axis A is the same as the cutting edge of the trailing edge blade. It is configured to be longer than the distance from the axis A. Thereby, since the blade part P1 of the blade P can be maintained in a state where it is inclined at a predetermined angle with respect to the axis A of the plunger 7, the cutting work can be suitably performed.

  Further, as described above, the saver saw 1 has the sleeve 84 extending in the front-rear direction, and the sleeve 84 has the first portion 841 and the second portion 842 that are located on the opposite sides with respect to the axial center of the sleeve 84. ing. The first portion 841 has a first rotation restricting portion 841A that cooperates with the second portion to fix the mounted portion P2 of the blade P around the blade holding pin 86 so as not to rotate. As a result, the blade P can be fixed with a three-point support while being inclined at a predetermined angle with respect to the axis A of the plunger 7, so that the blade P slips without cutting into the material to be cut during the cutting operation. It is possible to suppress cutting, and it is possible to suitably perform the cutting operation.

  Further, the sleeve 84 has a second portion 842 that cooperates with the first portion to fix the mounted portion P2 in a non-rotatable manner around the mounted portion P2 of the blade P around the blade holding pin 86, Since the first portion 841 and the second portion 842 are configured symmetrically with respect to the axial center of the sleeve 84, the blade P can be used by inverting the top and bottom, which is excellent in convenience.

  The first portion 841 is formed with a first groove 841a extending in the front-rear direction and recessed in the up-down direction, and the first rotation restricting portion 841A is provided at the end of the first groove 841a on the motor 3 side. The second portion 842 is formed with a second groove 842a extending in the front-rear direction and recessed in the up-down direction, and the mounted portion P2 is inserted into the first groove 841a and the second groove 842a, and the second rotation restriction. The portion 842A is provided at the end of the second groove 842a on the motor 3 side. In other words, by providing a groove in the sleeve 84, the blade P can be easily fixed at a predetermined angle with respect to the axis A of the plunger 7, so that the blade P does not bite into the material to be cut during the cutting operation. On the other hand, slipping without biting is suppressed, and the cutting operation can be performed suitably.

  Next, a saver saw 100, which is an example of a reciprocating tool according to a second embodiment of the present invention, will be described with reference to FIGS. The saver saw 100 basically has the same configuration as the saver saw 1 according to the first embodiment, the description of the same configuration as the configuration of the saver saw 1 is omitted, and different configurations are mainly described. . FIG. 7 is a front view showing the sleeve 184. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7 and shows a state in which the blade P is inserted into the sleeve 184.

  In the saver saw 100 according to the second embodiment, a sleeve 184 is provided instead of the sleeve 84. The inner diameter of the sleeve 184 is configured to be the same as the outer diameter of the slit portion 81.

  The first portion 1841 of the sleeve 184 shown in FIGS. 7 and 8 is provided with a first rotation restricting portion 1841A, and the second portion 1842 is provided with a second rotation restricting portion 1842A. . The first rotation restricting portion 1841A and the second rotation restricting portion 1842A protrude from the inner periphery of the sleeve 184 inward in the radial direction of the sleeve 184, and are fitted in the slit 81a. As a result, the sleeve 184 can be prevented from rotating with respect to the plunger 7. The first portion 1841 has a first holding surface 1841B extending in the front-rear direction, and the second portion 1842 has a second holding surface 1842B extending in the front-rear direction. The first rotation restricting portion 1841A is an example of the “first protrusion” in the present invention. The second rotation restricting portion 1842A is an example of the “second protrusion” in the present invention. The inner side in the radial direction of the sleeve 184 is an example of the “third direction” in the present invention.

  As shown in FIG. 8, the distance between the first holding surface 1841B and the second holding surface 1842B is greater than the distance between the first contact surface P2A and the second contact surface P2B of the blade P. It is also constructed long. Thus, the operator can easily insert the mounted portion P2 of the blade P into the sleeve 184. In the present embodiment, the present invention is applied to various types of blades configured such that the length between the upper surface and the lower surface of the mounted portion is shorter than the distance between the first holding surface 1841B and the second holding surface 1842B. Is possible.

  As shown in FIG. 8, the rear end portion of the blade P is inserted into the sleeve 184. Specifically, the first contact surface P2A and the second contact surface P2B are inserted into the sleeve 84 so as to form a predetermined angle with respect to the axis (axis A) of the sleeve 84.

  At this time, as shown in FIG. 8, the first contact surface P2A contacts the second holding surface 1842B. Further, the second contact surface P2B contacts the first holding surface 1841B, and the third contact surface P22A contacts the first rotation restricting surface 1841C of the first rotation restricting portion 1841A. That is, by being supported by the sleeve 184 at three points, the mounted portion P2 (blade P) is firmly fixed to the sleeve 184 so that it cannot rotate with respect to the blade holding pin 86. Thereby, it is possible to suppress the blade P from slipping without biting into the material to be cut during the cutting operation, and to perform the cutting operation suitably.

  As shown in FIG. 8, the first portion and the second portion are located on opposite sides with respect to the axis of the sleeve 184 and are configured symmetrically with respect to the axis of the sleeve 184. For this reason, it is possible to use the blade P upside down. In this case, the first contact surface P2A contacts the first holding surface 1841B. The second contact surface P2B contacts the second holding surface 1842B, and the third contact surface P22A contacts the second rotation restricting surface 1842C of the second rotation restricting portion 1842A. That is, also in this case, the mounted portion P2 (blade P) is fixed to the sleeve 184 so as not to be rotatable around the blade holding pin 86 by being supported at three points by the sleeve 184.

  In addition, the imaginary straight line connecting the cutting edge of the trailing edge blade P11 and the cutting edge of the leading edge blade P12 forms a predetermined angle with respect to the axis A, and the distance between the cutting edge of the leading edge blade P12 and the axis A is the same as the cutting edge of the trailing edge blade. It is configured to be longer than the distance from the axis A. Thereby, since the blade part P1 of the blade P can be maintained in a state where it is inclined at a predetermined angle with respect to the axis A of the plunger 7, the cutting work can be suitably performed.

  As described above, the saver saw 100 as an example of the reciprocating tool according to the second embodiment of the present invention includes the sleeve 184 extending in the front-rear direction, and the sleeve 184 is opposite to the axis of the sleeve 184. It has the 1st part 1841 and the 2nd part 1842 which are located in the side. The first portion 1841 has a first rotation restricting portion 1841A that cooperates with the second portion to fix the mounted portion P2 of the blade P around the blade holding pin 86 so as not to rotate. Thereby, since the blade P can be firmly fixed by three-point support in a state where the blade P is inclined at a predetermined angle with respect to the axis A of the plunger 7, the blade P does not bite into the material to be cut during the cutting operation. Slipping is suppressed, and the cutting operation can be performed suitably.

  Further, the first rotation restricting portion 1841A and the second rotation restricting portion 1842A protrude from the inner periphery of the sleeve 184 inward in the radial direction of the sleeve 184, and are positioned closer to the plunger 7 than the blade holding pin 86. Yes. That is, since the blade P can be easily fixed at a predetermined angle with respect to the plunger 7 by providing the projection, the blade P slips without cutting into the material to be cut during the cutting operation. Is suppressed, and the cutting operation can be suitably performed.

  Next, a saver saw 200 as an example of a reciprocating tool according to a third embodiment of the present invention will be described with reference to FIGS. 9 and 10. The saver saw 200 basically has the same configuration as the saver saw 1 according to the first embodiment, the description of the same configuration as that of the saver saw 1 is omitted, and different configurations are mainly described. . FIG. 9 is a front view showing the sleeve 284. FIG. 10 is a cross-sectional view taken along the line XX of FIG. 9 and shows a state where the blade P is inserted into the sleeve 284.

  In the saver saw 200 according to the third embodiment, a sleeve 284 is provided instead of the sleeve 84. The inner diameter of the sleeve 284 is configured to be the same as the outer diameter of the slit portion 81.

  The first portion 2841 of the sleeve 284 shown in FIGS. 9 and 10 is provided with a first rotation restricting portion 2841A, and the second portion 2842 is provided with a second rotation restricting portion 2842A. . The first rotation restricting portion 2841 </ b> A has a first holding surface 2841 </ b> B that is inclined in a direction away from the axis of the sleeve 284 as it goes away from the plunger 7. The second rotation restricting portion 2842A has a second holding surface 2842B that inclines in a direction away from the axis of the sleeve 284 as it goes away from the plunger 7. The first holding surface 2841B and the second holding surface 2842B are examples of the “inclined surface” in the present invention.

  As shown in FIG. 10, the diameter of the opening at the front end of the sleeve 284 is configured to be longer than the distance between the first contact surface P2A and the second contact surface P2B of the blade P. As a result, the operator can easily insert the mounted portion P2 of the blade P into the sleeve 284. In the present embodiment, the present invention can be applied to various blades configured such that the length between the upper surface and the lower surface of the mounted portion is shorter than the diameter of the opening at the front end portion of the sleeve 284.

  As shown in FIG. 10, the rear end portion of the blade P is inserted into the sleeve 284. Specifically, the first contact surface P2A and the second contact surface P2B are inserted into the sleeve 284 so as to form a predetermined angle with respect to the axis (axis A) of the sleeve 284.

  At this time, as shown in FIG. 10, the rear end portion of the first contact surface P2A contacts the second holding surface 2842B. Further, substantially the entire region of the second contact surface P2B and the third contact surface P22A is in contact with the substantially entire region of the first holding surface 2841B of the first rotation restricting portion 2841A. In this state, the mounted portion P <b> 2 (blade P) is fixed to the sleeve 284 so as not to rotate about the blade holding pin 86. Thereby, it is possible to suppress the blade P from slipping without biting into the material to be cut during the cutting operation, and to perform the cutting operation suitably. Further, it is possible to disperse the stress applied to the sleeve as compared with the case where the protrusion restricts the rotation of the mounted portion P2 of the blade P.

  As shown in FIG. 10, the first portion 2841 and the second portion 2842 are positioned opposite to each other with respect to the axis of the sleeve 284, and are configured symmetrically with respect to the axis of the sleeve 284. For this reason, it is possible to use the blade P upside down. In this case, the first contact surface P2A contacts the first holding surface 2841B. Further, substantially the entire area of the second contact surface P2B and the third contact surface P22A is in contact with the substantially entire area of the second holding surface 2842B. That is, also in this case, by being supported by the sleeve 284, the mounted portion P <b> 2 (blade P) is fixed to the sleeve 284 so as not to rotate about the blade holding pin 86.

  In addition, the imaginary straight line connecting the cutting edge of the trailing edge blade P11 and the cutting edge of the leading edge blade P12 forms a predetermined angle with respect to the axis A, and the distance between the cutting edge of the leading edge blade P12 and the axis A is the same as the cutting edge of the trailing edge blade. It is configured to be longer than the distance from the axis A. Thereby, since the blade part P1 of the blade P can be maintained in a state where it is inclined at a predetermined angle with respect to the axis A of the plunger 7, the cutting work can be suitably performed.

  As described above, the saver saw 200 as an example of the reciprocating tool according to the third embodiment of the present invention includes the sleeve 284 extending in the front-rear direction, and the sleeve 284 is opposite to the axis of the sleeve 284. It has the 1st part 1841 and the 2nd part 1842 which are located in the side. In addition, the first portion 2841 has a first rotation restricting portion 2841A that cooperates with the second portion to fix the mounted portion P2 of the blade P around the blade holding pin 86 so as not to rotate. As a result, the blade P can be fixed with a three-point support while being inclined at a predetermined angle with respect to the axis A of the plunger 7, so that the blade P slips without cutting into the material to be cut during the cutting operation. It is possible to suppress cutting, and it is possible to suitably perform the cutting operation.

  The first rotation restricting portion 2841 </ b> A has a first holding surface 2841 </ b> B that is inclined in a direction away from the axis of the sleeve 284 as it goes away from the plunger 7. The second rotation restricting portion 2842A has a second holding surface 2842B that inclines in a direction away from the axis of the sleeve 284 as it goes away from the plunger 7. That is, since the blade P can be easily fixed at a predetermined angle with respect to the axis A of the plunger 7 by providing the inclined surface, the blade P does not bite into the workpiece during the cutting operation. Slipping is suppressed, and the cutting operation can be performed suitably. Further, it is possible to disperse the stress applied to the sleeve as compared with the case where the protrusion restricts the rotation of the mounted portion P2 of the blade P.

  Next, a saver saw 300 as an example of a reciprocating tool according to a fourth embodiment of the present invention will be described with reference to FIGS. 11 and 12. The saver saw 300 basically has the same configuration as the saver saw 1 according to the first embodiment, the description of the same configuration as that of the saver saw 1 is omitted, and different configurations are mainly described. . FIG. 11 is a front view showing the sleeve 384, the first rotation restricting member 388, and the second rotation restricting member 389. 12 is a cross-sectional view taken along line XII-XII in FIG. 11 and shows a state in which the blade P is inserted into the sleeve 384. FIG.

  As shown in FIG. 12, in the saver saw 300 according to the fourth embodiment, a first rotation restricting member 388 and a second rotation restricting member 389 are provided on the rear side of the sleeve 384. In other words, the first rotation restricting member 388 and the second rotation restricting member 389 are fixed to the motor 3 side of the sleeve 384. The inner diameter of the sleeve 384 is configured to be the same as the outer diameter of the slit portion 81, the first holding surface 384 </ b> B is defined by the lower inner peripheral surface of the sleeve 384, and the second holding surface 384 </ b> C is defined by the upper inner peripheral surface. It is prescribed. The first rotation restricting member 388 and the second rotation restricting member are examples of the “turn restricting portion” in the present invention.

  The first rotation restricting member 388 and the second rotation restricting member 389 protrude inward in the radial direction of the sleeve 384 from the inner periphery of the sleeve 384 and are fitted in the slit 81a. Thereby, it is possible to suppress the sleeve 384 from rotating with respect to the plunger 7. A first rotation regulating surface 388A is defined on the extending end surface of the first rotation regulating member 388, and a second rotation regulating surface 389A is defined on the extending end surface of the second rotation regulating member 389. .

  As shown in FIG. 12, the distance between the first holding surface 384B and the second holding surface 284C is greater than the distance between the first contact surface P2A and the second contact surface P2B of the blade P. It is also constructed long. Thereby, the operator can easily insert the mounted portion P2 of the blade P into the sleeve 384. In the present embodiment, the present invention is applied to various blades configured such that the length between the upper surface and the lower surface of the mounted portion is shorter than the distance between the first holding surface 384B and the second holding surface 384C. Is possible.

  As shown in FIG. 12, the rear end portion of the blade P is inserted into the sleeve 384. Specifically, the first contact surface P2A and the second contact surface P2B are inserted into the sleeve 384 so as to form a predetermined angle with respect to the axis (axis A) of the sleeve 384.

  At this time, as shown in FIG. 12, the first contact surface P2A contacts the second holding surface 384C. In addition, the second contact surface P2B contacts the first holding surface 384B, and the third contact surface P22A contacts the first rotation restricting surface 388A of the first rotation restricting member 388. That is, by being supported at three points by the sleeve 384 and the first rotation restricting member 388, the mounted portion P2 (blade P) is fixed to the sleeve 84 so as not to rotate about the blade holding pin 86. The Thereby, it is possible to suppress the blade P from slipping without biting into the material to be cut during the cutting operation, and to perform the cutting operation suitably.

  As shown in FIG. 12, the sleeve 384 is configured symmetrically with respect to its axis (axis A). Further, the first rotation restricting member 388 and the second rotation restricting member 389 are located on opposite sides with respect to the axis of the sleeve 384 and are configured symmetrically with respect to the axis of the sleeve 384. For this reason, it is possible to use the blade P upside down. In this case, the first contact surface P2A contacts the first holding surface 384B. Further, the second contact surface P2B contacts the second holding surface 384C, and the third contact surface P22A contacts the second rotation restricting surface 389A of the second rotation restricting member 389. That is, even in this case, the mounted portion P2 (blade P) rotates with respect to the sleeve 384 around the blade holding pin 86 by being supported at three points by the sleeve 384 and the second rotation restricting member 389. Fixed immovable.

  In addition, the imaginary straight line connecting the cutting edge of the trailing edge blade P11 and the cutting edge of the leading edge blade P12 forms a predetermined angle with respect to the axis A, and the distance between the cutting edge of the leading edge blade P12 and the axis A is the same as the cutting edge of the trailing edge blade. It is configured to be longer than the distance from the axis A. Thereby, since the blade part P1 of the blade P can be maintained in a state where it is inclined at a predetermined angle with respect to the axis A of the plunger 7, the cutting work can be suitably performed.

  As described above, the saver saw 300 as an example of the reciprocating tool according to the fourth embodiment of the present invention includes the sleeve 384 extending in the front-rear direction and the first rotation protruding inward in the radial direction of the sleeve 384. A restriction member 388 and a second rotation restriction member 389 are provided, and the first rotation restriction member 388 and the second rotation restriction member 389 are fixed to the motor 3 side of the sleeve 384. In other words, by providing a rotation restricting portion separately from the cylindrical portion, it is possible to easily fix the blade P with a three-point support while being inclined at a predetermined angle with respect to the axis A of the plunger 7. P is prevented from slipping without biting into the material to be cut, and the cutting operation can be suitably performed.

  In the present embodiment, a first rotation regulating member 388 and a second rotation regulating member 389 for regulating the rotation of the mounted portion P2 of the blade P are provided separately from the sleeve 384. According to this, it is possible to easily fix the blade P with a three-point support in a state where the blade P is inclined at a predetermined angle with respect to the axis A of the plunger 7 without processing the sleeve.

  In the present specification, the saver saws 1, 100, 200, and 300 have been described as examples. However, the present invention is also applicable to a reciprocating tool driven by a motor other than the saver saw, for example, a reciprocating tool such as a jigsaw. .

DESCRIPTION OF SYMBOLS 1,100,200,300 ... Saver saw 2 ... Housing 3 ... Motor 4 ... Control board 5 ... Controller part 6 ... Gear part 7 ... Plunger 8 ... Blade mounting part 84, 184, 284, 384 ... Sleeve 841, 1841, 2841 ... 1st part 842, 1842, 2842 ... 2nd part 841A, 1841A, 2841A ... 1st rotation control part ... 842A, 1842A, 2842A ... 2nd rotation control part ... 388 ... 1st rotation control member 389 ... 2nd Rotation restricting member P ... Blade

Claims (10)

A housing;
A motor housed in the housing;
A power conversion mechanism that is housed in the housing and converts the rotational force of the motor into a reciprocating motion in a first direction;
An output shaft that is supported by the housing so as to be reciprocally movable, has an axis extending in the first direction, and is driven by the power conversion mechanism to reciprocate in the first direction;
A mounting portion that moves integrally with the output shaft, is located on the opposite side of the motor with respect to the output shaft, and is capable of mounting a tip tool;
The tip tool includes a mounted portion that is mounted on the mounting portion, and a blade portion that extends from the mounted portion to the opposite side of the motor in a state where the mounted portion is mounted on the mounting portion. ,
The blade portion has a plurality of blades including a first blade located closest to the mounting portion and a second blade positioned farthest from the mounting portion,
The mounting portion is configured to be able to fix the mounted portion in a state where a virtual straight line connecting the cutting edge of the first blade and the cutting edge of the second blade is inclined at a predetermined angle with respect to the axis. A reciprocating tool.   The reciprocating tool according to claim 1, wherein a distance between the cutting edge of the second blade and the axis is longer than a distance between the cutting edge of the first blade and the axis. The mounted portion is formed in a flat plate shape,
A through-hole is formed in the attached portion, the through-hole penetrating the attached portion in a second direction perpendicular to the first direction and being a thickness direction of the attached portion,
The mounting portion includes a holding pin that extends in the second direction and can be inserted into the through hole.
The holding pin is inserted through the through hole,
The reciprocating tool according to claim 1, wherein the mounted portion is fixed so as not to rotate about the holding pin. The mounting portion has a cylindrical portion extending in the first direction,
The cylindrical part has a first part and a second part located on opposite sides with respect to the axial center of the cylindrical part,
The said 1st part has a 1st rotation control part which fixes the said to-be-mounted part non-rotatably centering | focusing on the said holding pin in cooperation with the said 2nd part. Reciprocating tool.   The said 2nd part has a 2nd rotation control part which fixes the said to-be-mounted part non-rotatably centering | focusing on the said holding | maintenance pin in cooperation with the said 1st part. Reciprocating tool.   The reciprocating tool according to claim 5, wherein the first part and the second part are configured symmetrically with respect to an axis of the cylindrical part. A first groove extending in the first direction and recessed in a third direction perpendicular to the first direction and the second direction is formed in the first portion,
The first rotation restricting portion is provided at an end of the first groove on the motor side,
A second groove extending in the first direction and recessed in the third direction is formed in the second portion,
The mounted portion is inserted into the first groove and the second groove,
The reciprocating tool according to claim 5 or 6, wherein the second rotation restricting portion is provided at an end portion of the second groove on the motor side. The first rotation restricting portion is a first protrusion protruding in a third direction orthogonal to the first direction and the second direction from the inner periphery of the cylindrical portion,
The second rotation restricting portion is a second protrusion protruding in the third direction from the inner periphery of the cylindrical portion,
The reciprocating tool according to claim 5 or 6, wherein the first protrusion and the second protrusion are positioned closer to the output shaft than the holding pin in the first direction.   The said 1st rotation control part and the said 2nd rotation control part have an inclined surface which inclines in the direction away from the axial center of the said cylindrical part, as it goes to the direction away from the said output shaft. The reciprocating tool according to 5 or 6. The mounting portion includes a cylindrical portion extending in the first direction and a rotation restricting portion protruding inward in the radial direction of the cylindrical portion,
The reciprocating tool according to claim 3, wherein the rotation restricting portion is fixed to a motor side of the cylindrical portion.

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