JP4153183B2

JP4153183B2 - Reciprocating saw

Info

Publication number: JP4153183B2
Application number: JP2001225974A
Authority: JP
Inventors: 保広垣内
Original assignee: Makita Corp
Current assignee: Makita Corp
Priority date: 2001-07-26
Filing date: 2001-07-26
Publication date: 2008-09-17
Anticipated expiration: 2021-07-26
Also published as: JP2003033901A

Description

【０００１】
【発明の属する技術分野】
本発明は、ハウジングの前端に、モータ駆動で往復動するブレードを備えたレシプロソーに関する。
【０００２】
【従来の技術】
レシプロソーは、モータを内蔵したハウジング内に、モータの回転を往復部材の直線往復運動に変換する運動変換機構を備え、ハウジングから前方へ突出する往復部材の前端にブレードを同一直線上に装着することで、モータ駆動によってブレードが往復動し、切断作業が可能となる。
一方、このようなレシプロソーでは、暗い場所でも切断箇所（墨線等）が視認できるように、ハウジングの前端に発光ダイオード等の照明体を設けて、ハウジング前方を照明可能としたものが知られている。
【０００３】
【発明が解決しようとする課題】
しかし、上記照明体はハウジングに固定され、常に同じ箇所を照明する構造となっているから、例えばレシプロソーを横向きに支持してプランジカット（窓枠等のくり抜き作業）を行う場合等、作業によっては照明箇所と照明したい箇所とが一致せず、照明機能が役立たない場合がある。
【０００４】
そこで、請求項１に記載の発明は、作業にかかわらず常に照明したい箇所を適正に照明でき、使い勝手に優れたレシプロソーを提供することを目的としたものである。
【０００５】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載の発明は、ハウジングの前端に、往復部材が貫通する切替部材を回動可能に設け、照明体を切替部材の偏心位置に設けて、切替部材の回動操作により、照明体による照明位置をブレードの周囲で変更可能としたことを特徴とするものである。
請求項２に記載の発明は、請求項１の目的に加えて、照明が不要な場合の照明体の消灯を可能とするために、ハウジングにおける切替部材の取付面に、照明体の正負のリード端子が夫々接触可能な正負の電極板を、切替部材の回動操作に伴うリード端子の移動軌跡上へ断続的に設けて、切替部材の回動操作により、照明体の消灯を選択可能としたものである。
【０００６】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
図１は、レシプロソーの前端部分の説明図（（Ａ）が平面、（Ｂ）が側面を夫々示す）で、レシプロソー１は、図示しないモータを内蔵したハウジング２の前端（図１の右側）に、往復部材としてのスライドバー３を軸方向へスライド可能に備える。このスライドバー３は、ハウジング２に内設されてモータの回転を直線往復運動に変換する変換機構によって往復動可能で、前端にはブレード４を同一直線上に装着可能となっている。５はガイドシューで、ハウジング２に装着されて前方へ突出する連結バー６に支持され、ブレード４が直交状に貫通可能となっている。
【０００７】
又、ハウジング２の前面には、リング状のプレート部８の中央に、スライドバー３が中心を貫通する筒状部９を前方へ向けて立設したベースプレート７と、ベースプレート７の筒状部９に遊挿され、プレート部８に前方から当接する電極ホルダ１０とが、２本のネジ１１，１１によって取り付けられている。この電極ホルダ１０の前面には、図２に示すように、筒状部９と同心の半円状に形成される正負の電極板１２，１３が、＋側を外、−側を内として所定間隔をおいて接着されているが、夫々の半円部の両端及び中間位置では、外側の電極板１２の半円部よりも半径の大きい円弧上に位置する３つの突出部１２ａ〜１２ｃ及び１３ａ〜１３ｃが、同じく所定間隔をおいて夫々半径方向に突設されている。又、電極板１２，１３の突出部１２ａ，１３ａでは、ベースプレート７のプレート部８を貫通してハウジング２内に突出する接続片１２ｄ，１３ｄが延設され、この接続片１２ｄ，１３ｄに、ハウジング２内の電源回路と電気的接続されるリード線１４，１４がハンダ付けされている。
【０００８】
そして、ベースプレート７には、前方から切替部材としての切替リング１５が装着されている。この切替リング１５は、ベースプレート７のプレート部８と同径で、中央に筒状部９が遊挿する透孔１６を穿設した皿状体で、透孔１６より大径のフランジ部１８を備えたスリーブ１７を透孔１６に遊挿させて筒状部９外周に螺合させることで、フランジ部１８に前方へ抜け止めされる。この状態で、切替リング１５後端の開放側端部は、ベースプレート７のプレート部８の外周縁に形成された段部１９に嵌合して、ベースプレート７と同軸で回動可能となる。
【０００９】
２０は、切替リング１５の偏心位置で前方へ向けて取り付けられた発光ダイオード（以下「ＬＥＤ」という）で、切替リング１５の装着状態で、＋側のリード端子２１が、電極ホルダ１０の電極板１２における突出部１２ａ〜１２ｃによる円弧上に、−側のリード端子２２が、電極板１３における突出部１３ａ〜１３ｃによる円弧上に夫々位置するように配置されている。よって、図２（Ａ）のように、ＬＥＤ２０が３つの突出部１２ａ，１３ａから１２ｃ，１３ｃの何れかに位置する切替リング１５の回動位置では、ＬＥＤ２０のリード端子２１，２２と電極板１２，１３との接触により両者の電気的接続が維持され、図２（Ｂ）のように、ＬＥＤ２０が３つの突出部１２ａ，１３ａから１２ｃ，１３ｃの何れにも位置しない切替リング１５の回動位置では、ＬＥＤ２０は電極板１２，１３の半円部から半径方向に離れた位置にあって、リード端子２１，２２と電極板１２，１３との電気的接続は断たれるものとなる。
【００１０】
以上の如く構成されたレシプロソー１においては、ハウジング２に設けた図示しないスイッチレバーをＯＮ操作すると、モータが駆動してブレード４が往復動する。
ここで、電極板１２，１３の突出部１２ａ，１３ａ〜１２ｃ，１３ｃとＬＥＤ２０のリード端子２１，２２との設定により、両者の電気的接続は、切替リング１５の回動操作に伴うＬＥＤ２０のリード端子２１，２２の移動軌跡上で断続的に得られるから、ＬＥＤ２０を図２（Ａ）のように例えば突出部１２ｂ，１３ｂに位置させると、リード線１４，１４及び電極板１２，１３を介して電源回路と導通するＬＥＤ２０が点灯し、ハウジング２の前方を照明可能となる。
そして、照明箇所を変えたい場合は、切替リング１５を把持して左右何れかへ９０°回転させ、ＬＥＤ２０を別の突出部１２ａ，１３ａ又は１２ｃ，１３ｃに位置させると、同様にリード線１４，１４及び電極板１２，１３を介してＬＥＤ２０の点灯は維持されるため、ブレード４の周囲３箇所で照明が可能となる。又、照明が不要な場合は、ＬＥＤ２０が突出部１２ａ，１３ａ〜１２ｃ，１３ｃ以外の位置に来るように切替リング１５を回転させると、ＬＥＤ２０のリード端子２１，２２と電極板１２，１３との電気的接続が断たれ、ＬＥＤ２０を消灯させることができる。
【００１１】
このように上記形態のレシプロソー１によれば、ハウジング２の前端に、スライドバー３が貫通する切替リング１５を回動可能に設け、ＬＥＤ２０を切替リング１５の偏心位置に設けて、切替リング１５の回動操作により、ＬＥＤ２０による照明位置をブレード４の周囲で変更可能としたことで、プランジカット等の作業に合わせて適正な照明が可能となり、使い勝手に優れる。
又、ここでは、ハウジング２における切替部材の取付面に、ＬＥＤ２０のリード端子２１，２２が夫々接触可能な正負の電極板１２，１３を、切替リング１５の回動操作に伴うリード端子２１，２２の移動軌跡上へ断続的に設けて、切替リング１５の回動操作により、ＬＥＤ２０の消灯を選択可能としているから、照明が不要な時には切替リング１５でＬＥＤ２０を消灯させて、電力の無駄な消費やＬＥＤ２０の劣化進行を防止することができる。
【００１２】
尚、上記形態では、電極板１２，１３の突出部を３箇所に形成し、１８０°の範囲でＬＥＤ２０を回動可能としているが、突出部を増やしたり周方向の長さを長くしたりすれば、照明箇所の選択の幅が広がり、より使い勝手の向上が図られる。これはＬＥＤの回動範囲を広くしても同様である。又、照明体としては、ＬＥＤに限らず豆電球や管電球等を使用することもできる。
更に、照明体の消灯の選択が不要であれば、電極板は、突出部をなくして照明体の移動軌跡上全周に亘って設けることも可能であるし、ＬＥＤ等の照明体にリード線を直接接続して切替リングの回動範囲内で余裕を持つように引き回すことも可能である。
【００１３】
【発明の効果】
請求項１に記載の発明によれば、ハウジングの前端に、往復部材が貫通する切替部材を回動可能に設け、照明体を切替部材の偏心位置に設けて、切替部材の回動操作により、照明体による照明位置をブレードの周囲で変更可能としたことで、プランジカット等の作業に合わせて適正な照明が可能となり、使い勝手に優れる。
請求項２に記載の発明によれば、請求項１の効果に加えて、切替部材の回動操作により照明体の消灯を選択可能としたことで、照明が不要な時には照明体を消灯させて、電力の無駄な消費や照明体の劣化進行を防止することができる。
【図面の簡単な説明】
【図１】（Ａ）レシプロソーの前端部分の平面図である。
（Ｂ）レシプロソーの前端部分の側面図である。
【図２】（Ａ）Ａ−Ａ線断面図である（ＬＥＤ点灯状態）。
（Ｂ）（Ａ）から切替リングをＬＥＤの消灯位置に回転させた状態のＡ−Ａ線断面図である。
【符号の説明】
１・・レシプロソー、２・・ハウジング、７・・ベースプレート、８・・プレート部、９・・筒状部、１０・・電極ホルダ、１２，１３・・電極板、１５・・切替リング、２０・・発光ダイオード。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reciprocating saw provided with a blade reciprocatingly driven by a motor at a front end of a housing.
[0002]
[Prior art]
The reciprocating saw is provided with a motion conversion mechanism for converting the rotation of the motor into a linear reciprocating motion of the reciprocating member in a housing incorporating the motor, and a blade is mounted on the same straight line at the front end of the reciprocating member protruding forward from the housing. Thus, the blade is reciprocated by driving the motor, and cutting work is possible.
On the other hand, such a reciprocating saw is known in which an illumination body such as a light emitting diode is provided at the front end of the housing so that the front of the housing can be illuminated so that the cut portion (black line or the like) can be visually recognized even in a dark place. .
[0003]
[Problems to be solved by the invention]
However, since the above illuminating body is fixed to the housing and has a structure that always illuminates the same part, depending on the work, for example, when performing a plunge cut (cutout work such as a window frame) with a reciprocating saw supported sideways There are cases where the illumination location does not match the location to be illuminated and the illumination function is not useful.
[0004]
Accordingly, an object of the present invention is to provide a reciprocating saw that can properly illuminate a portion that is always desired to be illuminated regardless of work and is excellent in usability.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a switching member through which the reciprocating member passes is rotatably provided at the front end of the housing, and an illuminating body is provided at an eccentric position of the switching member. The position of illumination by the illuminating body can be changed around the blade by the rotating operation.
According to the second aspect of the present invention, in addition to the object of the first aspect, in order to enable the illumination body to be turned off when illumination is unnecessary, the positive and negative leads of the illumination body are provided on the mounting surface of the switching member in the housing. Positive and negative electrode plates that can be contacted with the respective terminals are intermittently provided on the movement path of the lead terminal accompanying the rotation operation of the switching member, and the lighting member can be turned off by the rotation operation of the switching member. Is.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view of the front end portion of a reciprocating saw ((A) shows a plane, (B) shows a side), and the reciprocating saw 1 is attached to the front end (right side of FIG. 1) of a housing 2 containing a motor (not shown). The slide bar 3 as a reciprocating member is slidable in the axial direction. The slide bar 3 can be reciprocated by a conversion mechanism that is installed in the housing 2 and converts the rotation of the motor into a linear reciprocating motion, and a blade 4 can be mounted on the same straight line at the front end. Reference numeral 5 denotes a guide shoe, which is supported by a connecting bar 6 that is mounted on the housing 2 and protrudes forward, so that the blade 4 can penetrate perpendicularly.
[0007]
Further, on the front surface of the housing 2, a base plate 7 in which a cylindrical portion 9 through which the slide bar 3 penetrates the center is erected forward at the center of the ring-shaped plate portion 8, and the cylindrical portion 9 of the base plate 7. The electrode holder 10 that is loosely inserted into the plate 8 and comes into contact with the plate portion 8 from the front is attached by two screws 11. As shown in FIG. 2, positive and negative electrode plates 12 and 13 formed in a semicircular shape concentric with the cylindrical portion 9 are provided on the front surface of the electrode holder 10 with the + side on the outside and the − side on the inside. Although bonded at intervals, the three protrusions 12a to 12c and 13a are located on arcs having a larger radius than the semicircle of the outer electrode plate 12 at both ends and intermediate positions of each semicircle. ˜13c are also projected in the radial direction at predetermined intervals. Further, in the projecting portions 12a and 13a of the electrode plates 12 and 13, connecting pieces 12d and 13d that extend through the plate portion 8 of the base plate 7 and project into the housing 2 are extended, and the connecting pieces 12d and 13d are connected to the housing. Lead wires 14 and 14 which are electrically connected to the power supply circuit 2 are soldered.
[0008]
A switching ring 15 as a switching member is attached to the base plate 7 from the front. The switching ring 15 is a dish-like body having the same diameter as the plate portion 8 of the base plate 7 and having a through-hole 16 in which the cylindrical portion 9 is loosely inserted in the center, and a flange portion 18 having a larger diameter than the through-hole 16. The sleeve 17 provided is loosely inserted into the through-hole 16 and screwed into the outer periphery of the tubular portion 9, thereby preventing the flange portion 18 from coming off forward. In this state, the open side end portion of the rear end of the switching ring 15 is fitted into a step portion 19 formed on the outer peripheral edge of the plate portion 8 of the base plate 7 and can be rotated coaxially with the base plate 7.
[0009]
Reference numeral 20 denotes a light emitting diode (hereinafter referred to as “LED”) mounted forward at an eccentric position of the switching ring 15. When the switching ring 15 is mounted, the lead terminal 21 on the + side is an electrode plate of the electrode holder 10. 12 are arranged so that the negative lead terminals 22 are positioned on the arcs of the projecting portions 13a to 13c of the electrode plate 13 on the arcs of the projecting portions 12a to 12c of the electrode plate 13, respectively. Therefore, as shown in FIG. 2A, the lead terminals 21 and 22 of the LED 20 and the electrode plate 12 are located at the rotation position of the switching ring 15 where the LED 20 is located at any one of the three protrusions 12a and 13a to 12c and 13c. , 13 is maintained in electrical connection with each other, and as shown in FIG. 2B, the rotation position of the switching ring 15 where the LED 20 is not located in any of the three protrusions 12a, 13a to 12c, 13c. Then, the LED 20 is located at a position radially away from the semicircular portions of the electrode plates 12 and 13, and the electrical connection between the lead terminals 21 and 22 and the electrode plates 12 and 13 is cut off.
[0010]
In the reciprocating saw 1 configured as described above, when a switch lever (not shown) provided in the housing 2 is turned on, the motor is driven and the blade 4 reciprocates.
Here, depending on the setting of the projecting portions 12 a, 13 a to 12 c, 13 c of the electrode plates 12, 13 and the lead terminals 21, 22 of the LED 20, the electrical connection between them is the lead of the LED 20 accompanying the turning operation of the switching ring 15. Since the LED 20 is intermittently obtained on the movement trajectory of the terminals 21 and 22, when the LED 20 is positioned at, for example, the protruding portions 12 b and 13 b as shown in FIG. 2A, the lead wires 14 and 14 and the electrode plates 12 and 13 are interposed. Thus, the LED 20 that is in conduction with the power supply circuit is turned on, and the front of the housing 2 can be illuminated.
If the illumination location is to be changed, the switching ring 15 is gripped and rotated 90 ° to the left or right, and the LED 20 is positioned at another protrusion 12a, 13a or 12c, 13c. Since the lighting of the LED 20 is maintained through the electrode 14 and the electrode plates 12 and 13, illumination is possible at three locations around the blade 4. When the illumination is unnecessary, when the switching ring 15 is rotated so that the LED 20 comes to a position other than the protruding portions 12a, 13a to 12c, 13c, the lead terminals 21, 22 of the LED 20 and the electrode plates 12, 13 are connected. The electrical connection is broken, and the LED 20 can be turned off.
[0011]
As described above, according to the reciprocating saw 1 of the above-described form, the switching ring 15 through which the slide bar 3 passes is rotatably provided at the front end of the housing 2, and the LED 20 is provided at an eccentric position of the switching ring 15. Since the illumination position by the LED 20 can be changed around the blade 4 by the rotation operation, it is possible to perform appropriate illumination according to the work such as plunge cutting, and the usability is excellent.
Further, here, the positive and negative electrode plates 12 and 13 with which the lead terminals 21 and 22 of the LED 20 can come into contact with the mounting surface of the switching member in the housing 2 are respectively connected to the lead terminals 21 and 22 accompanying the rotation operation of the switching ring 15. Since the LED 20 can be turned off intermittently by turning the switching ring 15, the LED 20 can be turned off by the switching ring 15 to eliminate wasteful power consumption. Further, deterioration of the LED 20 can be prevented.
[0012]
In the above embodiment, the protruding portions of the electrode plates 12 and 13 are formed at three locations and the LED 20 can be rotated within a range of 180 °. However, the protruding portions are increased or the circumferential length is increased. In this case, the range of illumination locations can be selected and the usability can be further improved. This is the same even if the rotation range of the LED is widened. Moreover, as a lighting body, not only LED but a miniature light bulb, a tube light bulb, etc. can also be used.
Furthermore, if it is not necessary to turn off the illuminating body, the electrode plate can be provided over the entire circumference of the illuminating body with no protrusion, and the lead wire can be connected to the illuminating body such as an LED. Can be directly connected and routed with a margin within the rotation range of the switching ring.
[0013]
【The invention's effect】
According to the first aspect of the present invention, at the front end of the housing, the switching member through which the reciprocating member passes is rotatably provided, the illuminating body is provided at the eccentric position of the switching member, and the switching member is rotated. By making it possible to change the illumination position of the illumination body around the blade, it is possible to perform appropriate illumination according to the work such as plunge cutting, and it is easy to use.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the illumination body can be turned off by rotating the switching member, so that the illumination body can be turned off when illumination is unnecessary. In addition, it is possible to prevent wasteful consumption of electric power and deterioration of the lighting body.
[Brief description of the drawings]
FIG. 1A is a plan view of a front end portion of a reciprocating saw.
(B) It is a side view of the front-end part of a reciprocating saw.
FIG. 2A is a cross-sectional view taken along the line AA (LED lighting state).
(B) It is an AA line sectional view in the state where the change ring was rotated to the extinguishing position of LED from (A).
[Explanation of symbols]
1 .... reciprocating saw, 2 .... housing, 7. base plate, 8 .... plate part, 9 .... cylindrical part, 10 .... electrode holder, 12, 13, ... electrode plate, 15 .... switching ring, 20 ... -Light emitting diode.

Claims

ハウジングの前端に、モータ駆動で往復動し、ブレードを装着可能な往復部材を前方へ向けて突設すると共に、前記ハウジングの前方を照明可能な照明体を備えたレシプロソーであって、
前記ハウジングの前端に、前記往復部材が貫通する切替部材を回動可能に設け、前記照明体を前記切替部材の偏心位置に設けて、前記切替部材の回動操作により、前記照明体による照明位置を前記ブレードの周囲で変更可能としたことを特徴とするレシプロソー。A reciprocating saw provided with an illuminating body capable of illuminating the front of the housing, with a reciprocating member capable of being reciprocated by a motor drive at the front end of the housing and projecting a reciprocating member to which the blade can be mounted forward.
A switching member through which the reciprocating member passes is rotatably provided at a front end of the housing, the illumination body is provided at an eccentric position of the switching member, and an illumination position by the illumination body is obtained by a rotation operation of the switching member. A reciprocating saw characterized in that it can be changed around the blade.

ハウジングにおける切替部材の取付面に、照明体の正負のリード端子が夫々接触可能な正負の電極板を、前記切替部材の回動操作に伴う前記リード端子の移動軌跡上へ断続的に設けて、前記切替部材の回動操作により、前記照明体の消灯を選択可能とした請求項１に記載のレシプロソー。On the mounting surface of the switching member in the housing, positive and negative electrode plates that can contact the positive and negative lead terminals of the illuminating body are intermittently provided on the movement trajectory of the lead terminal accompanying the rotation operation of the switching member, The reciprocating saw according to claim 1, wherein the illumination body can be turned off by a turning operation of the switching member.