JP2016123321A - Work tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work tool which can efficiently cut a member to be cut which is located apart from a user such as a branch in a high place of a tree.SOLUTION: A work tool includes: a power source 21 which is provided on a long operation pole; a reciprocating movement conversion mechanism which converts a power from the power source into a reciprocating movement; an output part which is provided on a tip end of the operation pole, to which the reciprocating movement conversion mechanism is connected, to which a saw blade 8 can be attached, and which makes the attached saw blade reciprocate along a first direction; a case 4 in which the reciprocating movement conversion mechanism is accommodated; and a support part 9 for a member to be cut which is attached to the case so as to rotationally move and supports the member to be cut. The support part for a member to be cut rotationally moves in a direction approaching the saw blade by drive of the saw blade while supporting the member to be cut.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a work tool, and more particularly to a work tool useful for pruning a branch or the like at a height of a tree.

  Conventionally, when cutting wood with a reciprocating saw blade such as a saver saw, if the wood is fixed and the base of the saver saw is pressed to cut the wood, it will cut smoothly while suppressing the shaking of the wood during cutting Can do.

JP 2010-214519 A

  However, when pruning a branch at the height of a tree, if you try to press the base against the branch, the branch is not fixed, so it will bend and escape, making it difficult to select smoothly .

  In view of such circumstances, the present invention intends to provide a work tool that can be cut smoothly without fixing a member to be cut by other means.

  The work tool of the present invention includes a power source provided on a long operating rod, a reciprocating motion conversion mechanism that converts power from the power source into a reciprocating motion, and a reciprocating motion provided at a tip of the operating rod. A conversion mechanism is connected and a saw blade can be attached, and an output section for reciprocating the attached saw blade along a first direction, a housing for accommodating the reciprocating motion conversion mechanism, and the housing And a member-to-be-cut member supporting portion that is rotatably attached to the body and supports the member to be cut.

  With the above configuration, when the member to be cut is cut by the saw blade, the member-to-be-cut support portion rotates in a direction approaching the saw blade while holding the member to be cut. By the operation of the member to be cut, the member to be cut is pressed against the member to be cut and cannot escape from the member to be cut, so that the cutting work of the member to be cut can be performed efficiently.

  Preferably, the to-be-cut member supporting portion is configured to apply a turning force in a direction approaching the saw blade while supporting the to-be-cut member by driving the saw blade.

  Preferably, the to-be-cut member supporting portion includes a shaft support portion that is rotatably supported by the housing, a second arm portion that is connected to the shaft support portion and extends along the first direction, and the first support portion. And a third arm portion extending from the two arm portions to the saw blade side.

  Preferably, the member to be cut has a first arm portion that extends away from the shaft support portion and is connected to the second arm portion at a distal end portion.

  Preferably, the apparatus further includes a rotation restricting portion that restricts a rotation range of the member to be cut with respect to the housing, and at least one pair of the first arm portion, the second arm portion, and the third arm portion is provided. During the cutting operation, the sawing blade can reciprocate in the space between the pair of third arm portions by the rotation restricting portion, and the first arm portion is directed from the shaft support portion to the saw blade. The member to be cut is supported by the second arm portion and the third arm portion, and the second arm portion is centered on the shaft support portion by the contact of the member to be cut with the third arm portion. It is comprised so that it may rotate in the direction which approaches the said saw blade.

  With the above configuration, for example, when a branch at a height of a tree is cut as a member to be cut, the turning range of the member support portion to be cut with respect to the housing is restricted by the turning restriction portion. The member to be cut is guided from below and cut using the space defined by the second arm portion and the third arm portion from the tip of the second arm portion to the connecting portion with the third arm portion. Hold the member. Next, when the saw blade is driven, the saw blade reciprocates in the space between the pair of third arm portions, so that when the saw blade is pulled toward the housing, the member to be cut is cut.

  At this time, since the saw blade presses the member to be cut against the third arm portion while cutting the member to be cut, the member to be cut is fixed to the member support portion to be cut by this pressing force. Moreover, the force which presses a 3rd arm part acts with the dead weight of a to-be-cut member depending on direction of a to-be-cut member support part. Furthermore, since the first arm portion extends from the shaft support portion toward the saw blade, the member to be cut is positioned closer to the saw blade than the shaft support portion. Therefore, due to the positional relationship between the member to be cut and the shaft support and the above-described force, a torque is generated that rotates the third arm in the direction of approaching the housing around the shaft support. By this torque, the second arm portion also rotates in the direction approaching the saw blade around the shaft support portion. By rotating the second arm part, the member to be cut is moved in the direction approaching the saw blade while maintaining the state supported by the member support part to be cut, so that the cutting operation of the member to be cut by the saw blade is continued. The

  Each time the saw blade is pulled toward the housing to cut the member to be cut, the member support portion to be cut is rotated in a direction approaching the saw blade while supporting the cutting member. Therefore, the member to be cut is cut without detaching from the member to be cut support, and the saw blade can finish the cutting operation.

  Preferably, the rotation restricting portion is a fourth arm portion extending so as to connect each tip portion of the pair of third arm portions.

  Preferably, the rotation restricting portion includes an urging member that is provided between the housing and the member-to-be-cut member supporting portion and urges the member-to-be-cut to be cut toward the housing.

  Preferably, the rotation restricting portion includes a locking portion that is provided on at least one of the housing and the shaft support portion and restricts the rotation of the shaft support portion.

  Preferably, the pair of first arm portions extend substantially parallel to each other.

  Preferably, the pair of second arm portions extend substantially parallel to each other.

  Preferably, the pair of third arm portions extend substantially parallel to each other.

  With the above configuration, when the member to be cut is at a remote location, the cutting location relative to the saw blade can be easily positioned.

  Preferably, the reciprocating motion converter further includes a drive shaft disposed inside the operating rod, provided between the power source and the reciprocating motion conversion mechanism and driven to rotate by power from the power source. The mechanism converts the rotation of the drive shaft into a reciprocating motion.

With the above-described configuration, the member to be cut located at a remote location that cannot be reached by the user can be cut while being held by the member to be cut support.
The work tool of the present invention is connected to a power source, a reciprocating motion conversion mechanism for converting the power from the power source into a reciprocating motion, and the reciprocating motion converting mechanism, and a saw blade can be attached. An output portion for reciprocating the saw blade along the first direction, a housing for housing the reciprocating motion conversion mechanism, and a member to be cut that is rotatably attached to the housing and supports a member to be cut. A member support portion, and the cut member support portion is a shaft support portion that is pivotally supported by the housing so as to be rotatable, and a second portion that is connected to the shaft support portion and extends along the first direction. It has an arm part and the 3rd arm part extended from the said 2nd arm part to the said saw blade side, It is characterized by the above-mentioned.

  According to the work tool of the present invention, it is possible to cut with a saw blade without fixing the member to be cut with a jig or an auxiliary tool.

It is a side view which shows the external appearance of the pole saver saw as embodiment of this invention. It is a side view which shows the external appearance of the saw blade, housing | casing, and support part of the working tool shown in FIG. It is a perspective view of the support part attached to the housing | casing. It is a side view of the support part attached to the housing | casing. It is a side view which shows a state when starting the cutting | disconnection operation | work by the saver saw shown in FIG. It is a side view which shows a state when the cutting member is cut | disconnected by the saver saw shown in FIG.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 shows a pole saver saw 1 according to an embodiment of the present invention. The pole saver saw 1 includes a main body housing 2 that accommodates a power source, an operating rod 3 having a handle 31, and a gear housing 4 to which a blade 8 is attached. In the following description, a direction in which the operating rod 3 extends with respect to the main body housing 2 is a front direction, and an opposite direction is a rear direction. In addition, the direction in which the handle 31 extends with respect to the operating rod 3 is an upward direction, and the opposite direction is a downward direction. Further, in FIG. 1, the right when the pole saver saw 1 is viewed from the rear direction is the right direction, and the opposite direction is the left direction.

  The main body housing 2 has an internal combustion engine or motor 21 as a power source and parts necessary for driving the power source to generate power.

  The operating rod 3 is a long cylindrical member extending in the front-rear direction, is connected to the front side of the main body housing 2, and has a length in the front-rear direction of about 1 to 4 m. The operation rod 3 includes a handle 31 and a grip 32 held by a user, and a drive shaft 33 is accommodated therein.

  The grip 32 is provided near the main body housing 2 of the operation rod 3 and includes a switch 34. The switch 34 can be turned on / off for driving the pole saver saw 1.

  The handle 31 is provided at a position closer to the gear housing 4 than the grip 32. When the user grips the grip 32 or the handle 31, the pole saver saw 1 can be transported to a desired position or held in a desired posture to perform a cutting operation.

  The drive shaft 33 extends from the main body housing 2 to the gear housing 4 through the inside of the operation rod 3. Since the rear end portion of the drive shaft 33 is mechanically connected to the internal combustion engine 21, the drive shaft 33 is rotated about the longitudinal direction by the power from the internal combustion engine 21.

  The gear housing 4 is attached to the front end portion of the operation rod 3 as a casing, and in order to drive a blade as a saw blade, a reciprocating motion conversion mechanism 5 and a plunger 6 are provided inside the rear end side near the operation rod 3. To accommodate.

  The reciprocating motion conversion mechanism 5 is disposed below the gear housing 4 and includes a drive transmission shaft 51 and a reciprocating plate 52.

  The drive transmission shaft 51 extends in the front-rear direction substantially parallel to the drive shaft 33 and is positioned in front of and below the drive shaft 34. The drive transmission shaft 51 is rotatably supported by the ball bearing 4B and the ball bearing 4C supported by the blade holder. Further, the drive transmission shaft 51 includes a drive transmission gear 51A and an inclined shaft 51B.

  The drive transmission gear 51 </ b> A is coaxially fixed to the rear portion of the drive transmission shaft 51 and meshes with the pinion 33 </ b> A of the drive shaft 33. The rotational force of the drive shaft 34 is transmitted to the drive transmission shaft 51 via the pinion 34A and the drive transmission gear 51A.

  The inclined shaft 51B is provided on the drive transmission shaft 51 in a state where the axis of the inclined shaft 51B is inclined with respect to the axis of the drive transmission shaft 51. The inclined shaft 51B is configured to rotate with the drive transmission shaft 51 around the axis of the drive transmission shaft 51.

  The reciprocating plate 52 is rotatably attached to the inclined shaft 51B via two ball bearings 5A that are in contact with the inclined shaft 51B and extends in a direction perpendicular to the axis of the inclined shaft 51B. 52A. The tip of the swing arm 52A is connected to the plunger 6.

  The plunger 6 has a substantially cylindrical shape extending in the front-rear direction as an output portion, and is disposed in front of and above the drive shaft 33 and substantially parallel to the drive shaft 33. The plunger 6 is supported by the gear housing 4 through a metal bearing 4D so as to be reciprocally slidable in the front-rear direction as the first direction. Further, the plunger 6 is formed with an insertion hole 6 a and a blade attachment portion 61.

  The insertion hole 6a is formed in a substantially circular shape in bottom view below the rear portion of the plunger 6, and a part of the swing arm portion 52A of the reciprocating plate 52 is inserted therethrough. In a state in which a part of the swing arm part 52A is inserted, the tip of the swing arm part 52A is rotatably connected to the plunger 6 by a connector pin 6A penetrating the rear part of the plunger 6 left and right.

  The blade attachment portion 61 is formed at the front end portion of the plunger 6.

  The blade holder 7 is fixed to the blade mounting portion 61 by a fastening member 7A, and includes a locking pin (not shown), a knob 71, and a holder case 72. The holder case 72 is formed so as to cover the entire blade attachment portion 61.

  The blade attachment portion 61 and the blade holder 7 constitute an attachment / detachment mechanism, and the blade 8 as a saw blade is detachably fixed to the plunger 6 from an opening provided on the front side of the gear housing.

  The blade 8 extends in the front-rear direction, and includes a tooth portion 8A for cutting the material to be cut at the front lower end portion. The thickness of the blade 8 is about 0.9 to 1.6 mm.

  As shown in FIGS. 2 and 3, below the gear housing 4, a guide frame 9 that guides a member to be cut such as a branch with respect to the blade 8 is provided to the gear housing 4 as a member to be cut supporting portion. It is provided movably.

  Below the gear housing 4, a base member 10 for attaching a guide frame is fixed to the gear housing 4 by bolts 13.

Below the vicinity of the front end portion of the base member 10, a pair of attachment pieces 11, 11 are provided that face each other in a first direction substantially orthogonal to the front-rear direction. Each of the attachment pieces 11, 11 is provided with a receiving portion 12 that rotatably supports the guide frame 9. The receiving portions 12 and 12 of the pair of attachment pieces 11 and 11 are located at a first distance L ₀ from each other. The positions of the receiving portions 12 and 12 in the base member 10 are such that when the base member 10 is mounted on the gear housing 4, they are arranged on both sides of the blade 8 in a bottom view.

  3 and 4, the guide frame 9 includes a pair of first arm portions 91, 91, a pair of second arm portions 92, 92, and a pair of third arm portions 93, 93. And a fourth arm portion 94.

Each of the pair of first arm portions 91 has a length L _1, and has a shaft support portion 91 </ b> A supported at one end portion thereof so as to be pivotable about the receiving portion 12 of the base member 10. . The pair of first arm portions 91 extend substantially parallel to each other. The length L ₁ is provided shorter than the distance between the teeth 8A of the shaft support 91A and the blade 8.

The second arm portion 92 of the pair, respectively, from the other end 91B of the distal end of the first arm portion 91, extending substantially parallel to each other in a direction intersecting the first arm portion 91 has a length L ₂ . One end portion of the second arm portion 92 is integrally connected to the other end portion 91B of the first arm portion 91. The angle formed by the first arm portion 91 and the second arm portion 92 is not limited to a right angle, and may be an appropriate angle.

Each of the third arm portions 93 has a length L ₃ , and a portion of the second arm portion 92 that is a second distance L ₄ (where L ₄ <L ₂ ) from the connecting portion 91 </ _b > B with the first arm portion 91. 92A (the base end portion of the third arm portion 93) extends from the second arm portion 92 in a direction away from the second arm portion 92 on the side opposite to the side where the shaft support portion 91A of the first arm portion 91 is located. Yes. The angle formed by the second arm portion 92 and the third arm portion 93 is not limited to a right angle, and may be an appropriate angle.

  Further, the fourth arm portion 94 connects between the distal ends 93 </ b> A and 93 </ b> A of the third arm portions 93 and 93. Since the fourth arm portion 94 is located on the back side of the blade 8 as a rotation restricting portion, the guide frame 9 is prevented from separating beyond a predetermined angle with respect to the tooth portion 8A of the blade 8. That is, the rotation range of the guide frame 9 relative to the gear housing 4 is restricted by the fourth arm portion 94.

The length L ₂ of the second arm portion 92 is made a portion to the tip portion 92B from the portion 92A of the third arm portion 93, with a third arm portion 93, a length that allows the support to be cutting member .

Further, the length L ₃ of the third arm portion 93 is set so that a space formed between the pair of third arm portions 93 is mounted on the gear housing 4 when the guide frame 9 is attached to the base member 10. The length of the blade 8 is set so that it can be inserted while cutting the member to be cut.

  When the shaft support portion 91A of the guide frame 9 having the above-described configuration is mounted on the receiving portion 12 of the base member 10, the guide frame 9 is geared with the imaginary line X connecting the receiving portions 12 of the mounting pieces 11 as a rotation axis. It can be rotated with respect to the housing 4. Therefore, the member to be cut can be supported with respect to the blade 8 by the guide frame 9 and the member to be cut can be brought close to the blade 8.

  Next, the operation of the pole saver saw 1 will be described.

  For example, when the high branch of a tree is cut as a member to be cut W by the pole saver saw 1, first, the grip 32 and the handle 31 are operated, as shown in FIG. The member to be cut W is captured in a space A defined by the second arm portion 92 and the third arm portion 93 from 92B to the base end portion 92A.

  Next, when the switch 34 is switched to the operating position, the drive shaft 33 is rotated by the power from the internal combustion engine 21. When the drive shaft 33 rotates, the drive transmission shaft 51 is rotationally driven via the pinion 33A and the drive transmission gear 51A, and the inclined shaft 51B rotates around the axis of the drive transmission shaft 51. For this reason, the reciprocating plate 52 swings in the front-rear direction every time the drive transmission shaft 51 makes a half rotation, and the swing arm 52A reciprocates in the front-rear direction. With this operation, the plunger 6 connected to the swing arm 52A and the blade 8 attached to the plunger 6 are also reciprocated in the front-rear direction. Cutting operation is possible by reciprocating the blade 8.

  As shown in FIG. 5, when the member to be cut W is caught by the guide frame 9, when the casing 4 of the saver saw 1 is pressed toward the member W to be cut, the member W to be cut is pressed against the third arm portion 93. It comes into contact and is pressed and is supported by the guide frame 9. At this time, the force F acts on the third arm portion 93 from the member to be cut W through the contact point with the third arm portion 93. Further, since the blade 8 cuts the member to be cut W when returning toward the gear housing 4, the member to be cut W is further pressed against the third arm portion 93. As a result, the force F acting on the third arm portion 93 is further increased. The force F is the contact point between the member to be cut and the third arm portion, and the direction thereof is higher than the shaft support portion 91A of the guide frame 9 because the first arm portion 91 is present. The torque T is generated by the force F with the pivotal portion 91A of the guide frame 9 as the center of rotation. With this torque T, the guide frame 9 rotates around the shaft support portion 91A while supporting the member W to be cut, and approaches the tooth portion 8A of the blade 8 as shown by the arrow A in FIG. Is rotated. Therefore, the blade 8 can continue the cutting operation of the member W to be cut.

  As described above, in addition to the force for pressing the saver saw 1 toward the member to be cut W, each time the blade 8 cuts the member W to be cut while returning toward the gear housing 4, the guide frame 9 is provided with the shaft support portion 91 </ b> A. A torque T about the rotation center acts. Then, by this torque T, the guide frame 9 rotates in a direction approaching the tooth portion 8A of the blade 8 as shown by an arrow B in FIG. This operation is repeated until the member to be cut is completely cut, and the rotation of the guide frame 9 with respect to the gear housing 4 proceeds. Therefore, even if the member to be cut W is not supported or fixed by using other mechanical means, the pole saver saw 1 escapes from the reciprocating blade 8 while holding the member W to be cut by the guide frame 9. The cutting operation can be performed without any problems.

  The guide frame 9 can be attached to the gear housing 4 by attaching the base member 10 to the gear housing 4 using the existing bolts 13. Therefore, it is possible to efficiently select a branch at a height of a tree simply by attaching the guide frame 9 to an existing pole saver saw.

  Further, since the fourth arm portion 94 is provided on the guide frame 9 and the rotation range of the guide frame 9 with respect to the blade 8 is limited, the member is supported in direct contact with the member to be cut before the cutting operation is started. The second arm portion 92 and the third arm portion 93 can be disposed close to the blade 8. Therefore, after the guide frame 9 indicates the member to be cut, the cutting work by the blade 8 can be started immediately.

  In addition, each of the arm portions 91, 92, and 93 is provided at least in pairs with the blade interposed therebetween, so that the holding range is widened in the width direction, and stable cutting with less bending with respect to the member to be cut. Is possible. In addition, since each of the arm portions 91, 92, 93 that form a pair is provided substantially parallel to each other, when the member to be cut is located away from the user operating the saver saw, the portion to be cut into the guide frame The operability when guiding the member is improved.

  Furthermore, when the gear housing is configured to be separated from the main body housing by the operating rod, when cutting a branch at a high tree position as a member to be cut, the member to be cut is not fixed and held by other means. In both cases, the cutting operation can be performed efficiently.

  In the above embodiment, the fourth arm portion 94 is provided as the rotation restricting portion. However, in other embodiments, the fourth arm portion 94 of the guide frame 9 is replaced with the receiving portions 12 and 12 instead of the fourth arm portion 94. A locking piece that restricts the angular position may be provided, and the rotation of the second arm portion of the guide frame 9 in a direction away from the tooth portion 8A of the blade 8 may be restricted. Further, a string spring may be installed as an urging means between the attachment piece 11 of the gear housing 4 and the portion of the guide frame 9 near the shaft support portion 91A. The string spring urges the guide frame 9 in a direction away from the tooth portion 8 </ b> A of the blade 8. Therefore, by urging the guide frame 9 in the direction away from the tooth portion 8A of the blade 8, when the guide frame 9 supports the member to be cut, the guide frame 9 can be brought into contact with the member to be cut with a predetermined pressure. The cutting operation can be started smoothly. The biasing means is not limited to the string spring, and an appropriate member that biases the guide frame 9 in the direction away from the blade 8 while restricting the rotation range of the guide frame 9 relative to the blade 8 is used. be able to.

  In a further embodiment, the pivot support portion 91A of the guide frame 9 with respect to the attachment piece 11 is rotated on at least one of the attachment piece 11 of the gear housing 4 and the portion of the guide frame 9 in the vicinity of the pivot support portion 91A. You may provide the latching | locking part to regulate. In this case, it is possible to prevent the guide frame 9 from rotating beyond a predetermined rotation range with respect to the gear housing 4.

  In these embodiments, by providing an urging means or a locking portion as a rotating portion, the fourth arm portion 94 contacts the back of the blade 8 that reciprocates when the pole saver saw 1 is operated by mistake. Can be avoided, and damage to the guide frame 9 can be prevented.

  Further, the angle formed by the first arm portion and the second arm portion at the other end portion 91B, and the angle formed by the third arm portion with respect to the second arm portion are not limited to a right angle, and the length of each arm portion is also illustrated. It is not limited to examples. In any case, any angle and length can be used as long as the angle and length generate a torque for rotating the guide frame 9 toward the blade 8 during the cutting operation.

  In the above embodiment, the pole saver saw is described as the work tool. However, the present invention can also be applied to a saver saw without a long operation rod. Further, the present invention can be applied to an appropriate work tool in which a saw blade reciprocates.

DESCRIPTION OF SYMBOLS 1 Work tool 4 Case 5 Reciprocating motion conversion mechanism 6 Output part 8 Saw blade 9 Cut member support part 21 Power source

Claims (13)

A power source provided in a long operation rod;
A reciprocating motion conversion mechanism for converting power from the power source into reciprocating motion;
An output portion provided at a tip of the operating rod, to which the reciprocating motion conversion mechanism is connected, a saw blade can be attached, and the attached saw blade reciprocates along a first direction;
A housing that houses the reciprocating motion conversion mechanism;
A member-to-be-cut support part that is rotatably attached to the housing and supports the member to be cut;
A work tool characterized by comprising:   2. The cutting member support portion is configured such that a rotational force is applied in a direction approaching the saw blade while supporting the member to be cut by driving the saw blade. The work tool described. The to-be-cut member support part is
A shaft support that is rotatably supported by the housing;
A second arm portion connected to the shaft support portion and extending along the first direction;
A third arm portion extending from the second arm portion toward the saw blade,
The work tool according to claim 1 or 2, characterized by comprising: The to-be-cut member support part further includes
A first arm portion extending away from the shaft support portion and connected to the second arm portion at a tip portion;
The work tool according to claim 3, further comprising: A rotation restricting portion that restricts a rotation range of the member to be cut with respect to the housing;
At least a pair of the first arm portion, the second arm portion, and the third arm portion are provided,
During the cutting operation, by the rotation restricting portion,
The saw blade can reciprocate in the space between the pair of third arm portions,
The first arm portion extends from the shaft support portion toward the saw blade,
The member to be cut is supported by the second arm portion and the third arm portion,
When the member to be cut comes into contact with the third arm portion, the second arm portion is configured to rotate in a direction approaching the saw blade about the shaft support portion. The work tool according to claim 4.   The work tool according to claim 5, wherein the rotation restricting portion is a fourth arm portion extending so as to connect respective tip portions of the pair of third arm portions.   The rotation restricting portion includes an urging member that is provided between the casing and the member to be cut support portion and urges the member to be cut support portion toward the case. The work tool according to claim 5.   The work tool according to claim 5, wherein the rotation restricting portion includes a locking portion that is provided on at least one of the housing and the shaft support portion and restricts the rotation of the shaft support portion.   The work tool according to claim 5, wherein the pair of first arm portions extend substantially parallel to each other.   The work tool according to claim 5, wherein the pair of second arm portions extend substantially parallel to each other.   The work tool according to claim 5, wherein the pair of third arm portions extend substantially parallel to each other. A drive shaft provided between the power source and the reciprocating motion conversion mechanism and driven to rotate by power from the power source;
The work tool according to claim 1, wherein the reciprocating motion conversion mechanism converts the rotation of the drive shaft into a reciprocating motion. Power source,
A reciprocating motion conversion mechanism for converting power from the power source into reciprocating motion;
The reciprocating motion conversion mechanism is connected and a saw blade is attachable, and an output section that reciprocates the attached saw blade along a first direction;
A housing that houses the reciprocating motion conversion mechanism;
A member-to-be-cut support part that is rotatably attached to the housing and supports the member to be cut;
Have
The to-be-cut member support part is
A shaft support that is rotatably supported by the housing;
A second arm portion connected to the shaft support portion and extending along the first direction;
A third arm portion extending from the second arm portion toward the saw blade,
A work tool characterized by comprising:

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