JPH048420A - Electric reciprocating saw - Google Patents

Abstract

PURPOSE:To suppress the increase in the force for pressing a material to be cut onto a saw blade, so as to reduce the load burden on a worker by stretching a second abutting member almost in a cutting direction so as to make the angle formed out of a tangent of a contact point and of an axis of the saw blade, acute angle, at the time of cutting the material to be cut of maximum diameter allowable. CONSTITUTION:An abutting member 3 is formed out of a first abutting piece 31, a second abutting piece 32, and of a fastening shaft 33, and by loosening a hinge head of the fastening shaft 33, the fixation between engaging pieces 31c, 31d and a reciprocating saw main body 1, and between the engaging piece 3c and the engaging piece 32c is released, while the first abutting piece 31 as well as the second abutting piece 32 can be rotated at the same time around the fastening shaft 33, and the second abutting piece 32 can be moved in parallel to a first abutting surface 3b. Since a part of the abutting member can be extended, the force for pressing a material to be cut onto a saw blade is reduced and the cutting workability is thus improved, even when the material of the maximum diameter allowable is to be cut, while, since a part of the abutting member is contracted in the reverse direction for proceeding of cutting, protrusion from the reciprocating saw main body can be suppressed, and the saw can thus be made compact, and storability can thus be improved.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、主に被切断物が棒材の切断作業に用いられる
電動式レシプロソーに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric reciprocating saw used mainly for cutting bar materials as objects to be cut.

〔従来の技術〕[Conventional technology]

従来の電動式レシプロソーは、第７図乃至第９図に示す
如く、レシプロソー本体１．鋸歯ブレード２．当接部材
３からなる。As shown in FIGS. 7 to 9, a conventional electric reciprocating saw has a reciprocating saw body 1. Serrated blade 2. It consists of a contact member 3.

レシプロソー本体ｌは、モータ装置１１．動力伝達部及
び動力変換部を有する動力伝達変換装置１２、プランジ
ャー１３ｇを有するプランジャー支持装置１３．該プラ
ンジャー支持装置１３に装着されるクランプ１４を内蔵
している。このもののモータ装置１１の回転運動は、後
述する経路によりプランジャー１３ｇの往復揺動運動に
変換される。モータｌｌａの回転運動は、動力伝達部の
減速機構にて回転が下げられる。動力伝達部の回転は動
力変換部のクランク１２ｉ　とカム部１２ｈに伝えられ
る。クランク１２ｉの回転は、プランジャー１３ｇに軸
着されたガイド板１３ｉ　とクランク１２ｉ　との作用
にてプランジャー１３ｇを往復運動させる。カム部１２
ｈの回転は、プランジャー支持装置１３に軸着されたロ
ーラ１３ａとカム部１２ｈとの作用にて一端が軸着され
たプランジャー支持袋Ｗ１３を揺動運動させる。従って
モータｌｌａの回転は、プランジャー支持装置１３の出
力部材だあるプランジャー１３ｇを往復揺動運動させる
。The reciprocating saw body l has a motor device 11. A power transmission conversion device 12 having a power transmission section and a power conversion section, a plunger support device 13 having a plunger 13g. A clamp 14 attached to the plunger support device 13 is built-in. The rotational motion of the motor device 11 of this device is converted into a reciprocating rocking motion of the plunger 13g through a path described later. The rotation of the motor lla is reduced by a speed reduction mechanism of the power transmission section. The rotation of the power transmission section is transmitted to the crank 12i and cam section 12h of the power conversion section. The rotation of the crank 12i causes the plunger 13g to reciprocate due to the action of the crank 12i and a guide plate 13i that is pivotally attached to the plunger 13g. Cam part 12
The rotation h causes the plunger support bag W13, one end of which is pivoted, to swing through the action of the roller 13a, which is pivoted to the plunger support device 13, and the cam portion 12h. Therefore, the rotation of the motor lla causes the plunger 13g, which is the output member of the plunger support device 13, to perform a reciprocating rocking motion.

鋸歯ブレード２は、クランプ１４を介してプランジャー
１３ｇに装着される。これによりプランジャー１３ｇの
往復揺動運動が鋸歯ブレード２に伝えられる。The sawtooth blade 2 is attached to the plunger 13g via a clamp 14. As a result, the reciprocating rocking motion of the plunger 13g is transmitted to the sawtooth blade 2.

当接部材３は、鋸歯ブレード２の鋸引きによる力の反力
Ｒ１を受けるとともに被切断物り、Ｍｚに対するレシプ
ロソー本体１の姿勢を安定させて作業者の負担を軽減し
ている。このものは、レシプロソー本体１に一端を軸着
され被切断物Ｍ、、　Ｍｚに対応して可動する。これに
より被切断物Ｍ、、　？ｈは鋸歯ブレード２と当接部材
３に挟みつけられながら切断されていく。The contact member 3 receives the reaction force R1 of the sawing force of the sawtooth blade 2, and stabilizes the posture of the reciprocating saw body 1 with respect to the object to be cut, Mz, thereby reducing the burden on the operator. This saw is pivoted at one end to the reciprocating saw body 1 and is movable in response to the objects M, . . . Mz to be cut. As a result, the object to be cut M...? h is cut while being sandwiched between the sawtooth blade 2 and the abutment member 3.

第８図に示すように前述した電動式レシプロソーを用い
て鋼材やパイプ等を切断すると、当接部材３の回動支点
から鋸歯ブレード２の切れ刃までの垂直距離りより被切
断物りの半径が小さい場合、当接部材３の当接面３１と
鋸歯ブレード２の軸線とのなす角度θが鋭角になる。ま
た第９図に示すように垂直距離りより被切断物Ｍ２の半
径が大きい場合、角度θは鈍角になる。これにより当接
部材３に生じる鋸引きによる力の反力Ｒ，の垂直成分が
、角度θが鋭角のときは上向きすなわち被切断物Ｍ１が
鋸歯ブレード２に押しつけられるように働き、角度θが
鈍角のときは下向きすなわち被切断物Ｍ２が鋸歯ブレー
ド２から離れるように働く。このため被切断物ＭＩ＋　
Ｍｚを手にて保持して切断作業する場合、細径の被切断
物Ｍ１のときは手の保持力が軽減されるものの、大径の
被切断物Ｍ２のときは手の保持力を増大させることとな
る。As shown in FIG. 8, when cutting steel materials, pipes, etc. using the electric reciprocating saw described above, the radius of the object to be cut is determined by the vertical distance from the pivot point of the contact member 3 to the cutting edge of the sawtooth blade 2. is small, the angle θ between the contact surface 31 of the contact member 3 and the axis of the sawtooth blade 2 becomes an acute angle. Further, as shown in FIG. 9, when the radius of the object to be cut M2 is larger than the vertical distance, the angle θ becomes an obtuse angle. As a result, when the angle θ is an acute angle, the vertical component of the reaction force R of the sawing force generated on the contact member 3 acts upward, that is, the object to be cut M1 is pressed against the sawtooth blade 2, and the angle θ is an obtuse angle. In this case, the work is directed downward, that is, the workpiece M2 moves away from the sawtooth blade 2. Therefore, the object to be cut MI+
When cutting Mz by holding it in the hand, the holding force of the hand is reduced when the object to be cut M1 has a small diameter, but the holding force of the hand increases when the object M2 has a large diameter. It happens.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

前述したような電動式レシプロソーは、鋼材やパイプ等
の被切断物を手で保持して切断作業する場合、当接部材
がレシプロソー本体に一端を軸着されているので被切断
物に対応して動く。このため太径の被切断物のときは角
度θが鈍角となり鋸引きによる力の反力の垂直成分が被
切断物を鋸歯ブレードから離すように働く。この結果、
被切断物を鋸歯ブレードに押しつける力を増す必要が生
じ、作業者の負担が増大するという問題がある。With the electric reciprocating saw mentioned above, when cutting an object to be cut, such as a steel material or pipe, by hand, the contact member has one end pivoted to the reciprocating saw body, so it is difficult to handle the object to be cut. Move. Therefore, when the object to be cut has a large diameter, the angle θ becomes an obtuse angle, and the vertical component of the reaction force of the sawing force acts to separate the object from the sawtooth blade. As a result,
There is a problem in that it is necessary to increase the force with which the object to be cut is pressed against the sawtooth blade, which increases the burden on the operator.

本発明は、このような事由に鑑みてなしたもので、その
目的とするところは、許容最大径の被切断物の切断にお
いても当接部材が角度θ〈９０゜に配せられ、従って被
切断物を鋸歯ブレードに押しつける力の増大を抑え作業
者の負担が軽減できる電動式レシプロソーを提供するに
ある。The present invention has been made in view of the above circumstances, and its purpose is to arrange the abutting member at an angle θ<90° even when cutting a workpiece having the maximum allowable diameter, so that the object is To provide an electric reciprocating saw capable of reducing the burden on a worker by suppressing an increase in force for pressing a cut object against a sawtooth blade.

〔課題を解決するための手段〕[Means to solve the problem]

上記した目的を達成するために、本発明の電動式レシプ
ロソーは、鋸歯ブレードと、 該鋸歯ブレード側に配設され被切断物に当接される当接
部材と、 スイッチを介して電源に接続された出力部を有するモー
タ装置と、該モータ装置に連結された動力伝達部及び動
力変換部を有する動力伝達変換装置と、前記動力変換部
に連結されクランプとともに鋸歯ブレードを支持する刃
取付部を設けたプランジャーを有するプランジャー支持
装置と、を内蔵するとともに前記当接部材を軸支するレ
シプロソー本体と、 からなる電動式レシプロソーにおいて、前記当接部材は
、軸着された第１当接部材と、該第１当接部材に略切断
を進める方向へ伸縮自在に連結される第２当接部材とか
らなり、再当接部材がレシプロソー本体に対して同時に
回動、固着及び弛緩せしめるようにした構成としている
。In order to achieve the above object, the electric reciprocating saw of the present invention comprises: a sawtooth blade; a contact member disposed on the side of the sawtooth blade that comes into contact with an object to be cut; and a contact member connected to a power source via a switch. a power transmission conversion device having a power transmission section and a power conversion section connected to the motor device; and a blade mounting section connected to the power conversion section and supporting a sawtooth blade together with a clamp. a plunger support device having a plunger; and a reciprocating saw main body that includes a built-in plunger support device and pivotally supports the abutting member, wherein the abutting member is connected to a first abutting member that is pivotably attached to the reciprocating saw body. , and a second abutting member that is telescopically connected to the first abutting member substantially in the cutting direction, and the re-abutting member is simultaneously rotated, fixed, and loosened with respect to the reciprocating saw body. It is structured as follows.

〔作用〕[Effect]

本発明によれば、許容最大径の被切断物の切断において
は、第２当接部材を略切断を進める方向へ伸ばすことに
より、第２当接部材と被切断物との接触点を被切断物の
中心より下方に取れる。これにより接触点の接線と鋸歯
ブレードの軸線とのなす角度θは鋭角となる。従って再
当接部材は、切断作業時はレシプロソー本体に固着され
ているので角度θ＜９０”を維持する。According to the present invention, when cutting an object having the maximum allowable diameter, the second abutting member is extended substantially in the cutting direction, thereby adjusting the point of contact between the second abutting member and the object to be cut. It can be taken below the center of an object. As a result, the angle θ between the tangent of the contact point and the axis of the sawtooth blade becomes an acute angle. Therefore, since the recontact member is fixed to the reciprocating saw body during cutting, the angle θ<90'' is maintained.

また、細い被切断物の切断や収納保管時には、第２当接
部材を略切断を進める方向の反対方向に縮めることによ
りレシプロソー本体からの突出を抑えている。Further, when cutting or storing a thin object to be cut, the second abutting member is contracted in a direction substantially opposite to the cutting direction, thereby suppressing protrusion from the reciprocating saw body.

〔実施例〕〔Example〕

以下、本発明の一実施例を第１図乃至第４図に基づいて
説明する。Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 4.

本発明の電動式レシプロソーは、レシプロソー本体１．
鋸歯ブレード２．当接部材３からなる。The electric reciprocating saw of the present invention includes a reciprocating saw body 1.
Serrated blade 2. It consists of a contact member 3.

レシプロソー本体１は、モータ装置１１．動力伝達変換
装置１２．プランジャー支持装置１３．該プランジャー
支持装置１３に装着されるクランプ１４とを内蔵してい
る。The reciprocating saw body 1 includes a motor device 11. Power transmission conversion device 12. Plunger support device 13. A clamp 14 attached to the plunger support device 13 is built in.

モータ装置１１は、スイッチを介して電源に接続された
出力軸１１ｂを有するモータｌｌａと、該出力軸１１ｂ
に一体的に固定されたピニオンｌｌｃとからなっている
。The motor device 11 includes a motor lla having an output shaft 11b connected to a power source via a switch, and a motor lla having an output shaft 11b connected to a power source via a switch.
The pinion llc is integrally fixed to the .

動力伝達変換装置１２は、動力伝達部と動力変換部で構
成される。The power transmission conversion device 12 includes a power transmission section and a power conversion section.

動力伝達部は、ピニオンｌｌｃに噛み合い、ワンウェイ
クラッチ１２ａを介して軸１２ｂに結合された高速歯車
１２ｃと、ピニオンｌｌｃに噛み合う中間歯車１２ｄと
、該中間歯車１２ｄに噛み合い、ワンウェイクラッチ１
２ａを介して軸１２ｂに結合された低速歯車１２ｅとか
らなっている。そして、出力軸１１ｂの正転・逆転に対
応して高速・低速の動力伝達をするものである。The power transmission section includes a high-speed gear 12c that meshes with the pinion LLC and is connected to the shaft 12b via the one-way clutch 12a, an intermediate gear 12d that meshes with the pinion LLC, and a one-way clutch 1 that meshes with the intermediate gear 12d.
A low speed gear 12e is connected to a shaft 12b via a gear 2a. The output shaft 11b transmits high-speed and low-speed power in response to forward and reverse rotation of the output shaft 11b.

動力変換部は、クランク１２ｉであって、一方に第１０
−ラ１２ｆを嵌挿した偏心ビン１２ｇと、他方に後述す
るプランジャー支持装置１３を揺動するカム部１２ｈを
有し、中心部を軸１２ｂと一体的に形成してなっている
。The power converter is a crank 12i, and one
- It has an eccentric bottle 12g into which a roller 12f is inserted, and a cam portion 12h for swinging a plunger support device 13, which will be described later, on the other side, and its center portion is integrally formed with the shaft 12b.

プランジャー支持装置１３は、軸受台１３ｅとプランジ
ャー１３ｇとから形成される。The plunger support device 13 is formed from a bearing stand 13e and a plunger 13g.

軸受台１３ｅは、一方を軸着し、他方にカム部１２ｈに
接する第２０−ラ１３ａを嵌挿したビン１３ｂと第２０
−ラ１３ａをカム部１２ｈに圧接するためのばね１３ｃ
の受は部１３ｄを有している。The bearing stand 13e has a pin 13b and a pin 13b, in which one end is pivoted and the other end is fitted with a 20th roller 13a in contact with the cam portion 12h.
- Spring 13c for pressing the roller 13a against the cam portion 12h
The receiver has a portion 13d.

プランジャー１３ｇは、一方に、後述する刃取付部１３
ｈと、他方に、往復運動方向を規制し、その直角方向を
自由としだ長孔を設け、一端を軸着したガイド板１３ｉ
　と、中間部に回り止めのためのビン１３ｊ　とを有し
ている。そして、軸受台１３ｅに軸受１３ｆ、　１３ｆ
を介して往復運動自在に支持され、ガイド板１３ｉと係
合したクランク１２ｉにより往復駆動され・る。The plunger 13g has a blade attachment portion 13, which will be described later, on one side.
h, and a guide plate 13i on the other hand, which is provided with an elongated hole that restricts the direction of reciprocating movement, leaves the direction perpendicular to the reciprocating direction free, and has one end pivoted.
and a pin 13j in the middle for preventing rotation. Then, bearings 13f, 13f are mounted on the bearing stand 13e.
It is supported so as to be able to reciprocate freely through the guide plate 13i, and is driven to reciprocate by a crank 12i that is engaged with a guide plate 13i.

刃取付部１３ｈは、プランジャー１３ｇに鍛造や溶接等
にて一体的に形成され、後述する鋸歯ブレード２をガイ
ドし後述するクランプ１４に係合する。The blade attachment portion 13h is integrally formed with the plunger 13g by forging, welding, etc., guides the sawtooth blade 2 described later, and engages with a clamp 14 described later.

クランプ（図示せず）は、刃取付部１３ｈに嵌合し、こ
れとの間に鋸歯ブレード２を挟着する。A clamp (not shown) fits into the blade attachment portion 13h and clamps the sawtooth blade 2 therebetween.

鋸歯ブレード２は、一端に、クランプと嵌合して切断時
の抵抗により抜けるのを防ぐガイド孔２ａと切り欠き部
２ｂを有し、刃取付部１３ｈのガイド面に支持され、ネ
ジによりガイド面とクランプ１４の間に挟着される。The sawtooth blade 2 has a guide hole 2a and a notch 2b at one end that fit into the clamp and prevent it from coming off due to resistance during cutting, and is supported by the guide surface of the blade attachment part 13h, and is attached to the guide surface by a screw. and clamp 14.

当接部材３は、第１当接片３Ｌ第２当接片３２゜締め付
は軸３３からなる。The abutting member 3 is comprised of a shaft 33 that holds a first abutting piece 3L and a second abutting piece 32°.

第１当接片３１は、金属板製であり、鋸歯ブレード２が
貫通する貫通孔３１ａを有する第１当接面３１ｂと、第
１当接面３１ｂの対向する側面に締め付は軸３３と係合
する係止片３１ｃ、　３１ｄと、から形成される。一方
の係止片３１ｄには、シンク加工部分にねじが切られた
軸保持部３１ｅが設けられる。該軸保持部３１ｅには、
締め付は軸３３のねじ部が螺着される。他方の係止片３
１ｃには、軸保持部３１ｅに対向する位置に締め付は軸
３３が貫通する孔３１ｆ　と、該孔３１ｆの中心を通り
第１当接面３１ｂに平行な線上にガイド突起３１ｇが設
けられる。該ガイド突起３１ｇは、締め付は軸３３とと
もに第２当接片３２を第１当接面３１ｂに平行移動させ
るガイドの機能を有する。The first abutting piece 31 is made of a metal plate, and has a first abutting surface 31b having a through hole 31a through which the sawtooth blade 2 passes, and a shaft 33 that is fastened to the opposing side surface of the first abutting surface 31b. It is formed from engaging locking pieces 31c and 31d. One of the locking pieces 31d is provided with a shaft holding portion 31e that is threaded in the sink processing portion. The shaft holding portion 31e includes
For tightening, the threaded portion of the shaft 33 is screwed. The other locking piece 3
1c is provided with a hole 31f through which the tightening shaft 33 passes through at a position facing the shaft holding portion 31e, and a guide protrusion 31g on a line passing through the center of the hole 31f and parallel to the first contact surface 31b. The guide protrusion 31g has a tightening function as a guide for moving the second abutting piece 32 parallel to the first abutting surface 31b together with the shaft 33.

第２当接片３２は、金属板製であり、鋸歯ブレード２が
位置する側に開口部３２ａを有する第２当接面３２ｂと
、係止片３１ｃが位置する側に設けられた係止片３２ｃ
がＬ字状に一体的に形成される。該係止片３２ｃには、
ガイド突起３１ｇや締め付は軸３３に対応した位置にこ
れらが略内接する長孔３２ｄを設けている。The second contact piece 32 is made of a metal plate, and includes a second contact surface 32b having an opening 32a on the side where the sawtooth blade 2 is located, and a locking piece provided on the side where the locking piece 31c is located. 32c
is integrally formed in an L-shape. The locking piece 32c includes
A long hole 32d is provided at a position corresponding to the shaft 33 for the guide protrusion 31g and the fastener to be substantially inscribed therein.

締め付は軸３３は、長寸の蝶ボルトでなる。このものは
、孔３１ｆの方から挿入され係止片３１ｃや係止片３１
ｄに挟まれたレシプロソー本体１の一端を貫通して軸保
持部３１ｅのねじ部に螺着される。そして、蝶頭を手回
しで締めることにより係止片３１ｃ、３１ｄがレシプロ
ソー本体１を挟着する。この結果、第１当接片３１がレ
シプロソー本体１に固着される。そして第２当接片３２
の係止片３２ｃも同時に係止片３１ｃと蝶頭間に固着さ
れる。また蝶頭を手回しで弛めることにより、係止片３
１ｃ、３１ｄとレシプロソー本体１、係止片３１ｃと係
止片３２ｃの固着が解除され、第１当接片３１及び第２
当接片３２は締め付は軸３３周りに同時に回動自在とな
る。そして、第２当接片３２も第１当接面３１ｂに対し
て平行移動自在となる。The tightening shaft 33 is a long butterfly bolt. This is inserted from the hole 31f, and the locking piece 31c and the locking piece 31
It passes through one end of the reciprocating saw main body 1 sandwiched between the ends d and is screwed into the threaded part of the shaft holding part 31e. Then, by manually tightening the butterfly head, the locking pieces 31c and 31d clamp the reciprocating saw body 1. As a result, the first contact piece 31 is fixed to the reciprocating saw body 1. and second contact piece 32
The locking piece 32c is also fixed between the locking piece 31c and the butterfly head at the same time. Also, by loosening the butterfly head by hand, the locking piece 3
1c, 31d and the reciprocating saw main body 1, the locking pieces 31c and the locking pieces 32c are released, and the first contact piece 31 and the second
The contact piece 32 can be tightened and rotated around the shaft 33 at the same time. The second abutting piece 32 is also movable parallel to the first abutting surface 31b.

なお、前述した当接部材は、第２当接片３２を第１当接
片３１の外側に配設させているが、第５図及び第６図に
示すように、第１当接片３１の内側に配設させるように
してもよい。この場合、第２当接片３２の係止片３２　
ｅ　、　３２ｅを対向して設けられるので両端固着でき
る。これにより被切断物への当接が安定する。また係止
片３１ｄに軸保持部３１ｅを設けているが、この部分を
貫通孔として軸保持部３１ｅに替えて蝶ナツトを用いる
ようにしてもよい。Note that in the abutting member described above, the second abutting piece 32 is disposed outside the first abutting piece 31, but as shown in FIGS. 5 and 6, the first abutting piece 31 It may be arranged inside the . In this case, the locking piece 32 of the second contact piece 32
Since the 32e and 32e are provided facing each other, both ends can be fixed. This stabilizes the contact with the object to be cut. Further, although the locking piece 31d is provided with a shaft holding portion 31e, this portion may be made into a through hole and a wing nut may be used instead of the shaft holding portion 31e.

〔発明の効果〕〔Effect of the invention〕

本発明の電動式レシプロソーは、当接部材の一部が伸ば
せられるので、許容最大径の被切断物の切断においても
被切断物を鋸歯ブレードに押しつける力が軽減させられ
て切断作業性の向上が図れ、また当接部材の一部が略切
断を進める方向の反対方向に縮められるので、レシプロ
ソー本体からの突出が抑えられてコンパクト化が図れ収
納保管性が上げられる。In the electric reciprocating saw of the present invention, since a part of the contact member can be extended, the force pressing the object against the sawtooth blade is reduced even when cutting an object with the maximum allowable diameter, thereby improving cutting work efficiency. Moreover, since a part of the abutting member is contracted in a direction substantially opposite to the cutting direction, protrusion from the reciprocating saw main body is suppressed, making the reciprocating saw compact, and improving storage efficiency.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明の一実施例を示した断面図、第２図は
、同じく、要部断面図、 第３図は、同じく、要部断面図、 第４図は、同じく、要部斜視図、 第５図は、本発明の別の実施例を示した要部断面図、 ６図は、同じく、要部断面図、 ７図は、従来例の断面図、 ８図は、同じく、要部断面図、 ９図は、同じく、要部断面図。 １・−レシプロソー本体、 ２−・・・鋸歯ブレード、 ３−当接部材、 ３１・−・第１当接片、 ３２−・・第２当接片、 ３３−締め付は軸。 第２図 第３図 ３】 特許出願人　　松下電工株式会社 代理人　　　　弁理士　竹光　敏丸（ほか２名）類４図 第５図 第６図FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view of the main part, FIG. 3 is a sectional view of the main part, and FIG. 4 is a sectional view of the main part. FIG. 5 is a sectional view of a main part showing another embodiment of the present invention; FIG. 6 is a sectional view of a main part; FIG. 7 is a sectional view of a conventional example; FIG. 8 is a sectional view of a conventional example; Figure 9 is a sectional view of the main part. 1. Reciprocating saw body, 2. Serrated blade, 3. Contact member, 31.. 1st contact piece, 32.. 2nd contact piece, 33. Tightening shaft. Fig. 2 Fig. 3] Patent applicant Matsushita Electric Works Co., Ltd. Agent Patent attorney Toshimaru Takemitsu (and 2 others) Class 4 Fig. 5 Fig. 6

Claims (1)

【特許請求の範囲】[Claims] （１）鋸歯ブレードと、 該鋸歯ブレード側に配設され被切断物に当接される当接
部材と、 スイッチを介して電源に接続された出力部を有するモー
タ装置と、該モータ装置に連結された動力伝達部及び動
力変換部を有する動力伝達変換装置と、前記動力変換部
に連結されクランプとともに鋸歯ブレードを支持する刃
取付部を設けたプランジャーを有するプランジャー支持
装置と、を内蔵するとともに前記当接部材を回動可能に
支持するレシプロソー本体と、 からなる電動式レシプロソーにおいて、 前記当接部材は、回動可能に支持された第１当接片と、
該第１当接片に略切断を進める方向へ伸縮自在に連結さ
れる第２当接片とからなり、両当接片がレシプロソー本
体に対して同時に回動、固着及び弛緩せしめるようにし
たことを特徴とする電動式レシプロソー。(1) A sawtooth blade, a contact member disposed on the side of the sawtooth blade that comes into contact with the object to be cut, a motor device having an output section connected to a power source via a switch, and connected to the motor device. a power transmission conversion device having a power transmission portion and a power conversion portion; and a plunger support device having a plunger connected to the power conversion portion and provided with a blade attachment portion that supports a sawtooth blade together with a clamp. and a reciprocating saw main body that rotatably supports the abutting member, wherein the abutting member includes a first abutting piece that is rotatably supported;
The second abutting piece is connected to the first abutting piece so as to be expandable and retractable in the cutting direction, and both the abutting pieces are simultaneously rotated, fixed, and relaxed with respect to the reciprocating saw body. An electric reciprocating saw featuring