JPH10315201A - Blade retainer for cutting machine - Google Patents
Blade retainer for cutting machineInfo
- Publication number
- JPH10315201A JPH10315201A JP13307597A JP13307597A JPH10315201A JP H10315201 A JPH10315201 A JP H10315201A JP 13307597 A JP13307597 A JP 13307597A JP 13307597 A JP13307597 A JP 13307597A JP H10315201 A JPH10315201 A JP H10315201A
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- blade
- cam
- cutting machine
- cams
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/08—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools
- B23D51/10—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools for hand-held or hand-operated devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はジグソー、レシプロ
ソー等の切断機のブレード保持装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade holding device for a cutting machine such as a jigsaw and a reciprocating saw.
【０００２】[0002]
【従来の技術】図５に従来のブレード保持装置の一例を
示す。プランジャ４の下端部にはブレード係止部４ａが
設けられており、プランジャ４下端部には外周を覆う形
状をしたセットリング１０が取付けられている。また、
プランジャ４下端部にはブレード係止部４ａと直交する
穴４ｂが、セットリング１０には穴４ｂと連通するねじ
穴１０ａが設けられており、ねじ穴１０ａとねじ嵌合す
るボルト９がセットリング１０を介してプランジャ４に
取付けられている。2. Description of the Related Art FIG. 5 shows an example of a conventional blade holding device. The lower end of the plunger 4 is provided with a blade engaging portion 4a, and the lower end of the plunger 4 is provided with a set ring 10 having a shape covering the outer periphery. Also,
The lower end of the plunger 4 is provided with a hole 4b orthogonal to the blade engaging portion 4a, and the set ring 10 is provided with a screw hole 10a communicating with the hole 4b. It is attached to the plunger 4 via 10.
【０００３】ブレード係止部４ａにブレード５を挿入
し、その後ボルト９を締付けてボルト９先端とブレード
係止部４ａの内壁によりブレード５を挟持することでブ
レード５をプランジャ４に取付けていた。The blade 5 is attached to the plunger 4 by inserting the blade 5 into the blade locking portion 4a, and then tightening the bolt 9 to clamp the blade 5 between the tip of the bolt 9 and the inner wall of the blade locking portion 4a.
【０００４】[0004]
【発明が解決しようとする課題】従来したブレード保持
装置では、ボルト９の締付けが緩いと切断作業時にブレ
ード５がぶれてしまう、あるいはブレード５が落下して
しまう危険性があるため、ボルト９の締付力を確実に得
るためにはボルト９の締付けに六角棒レンチやドライバ
ー等の工具を用いなければならないという欠点があっ
た。本発明の目的は、上記欠点を解消し、工具等を使用
しなくともブレードの取付けを確実に行うことができる
切断機のブレード保持装置を提供することである。In the conventional blade holding device, if the bolt 9 is loosely tightened, there is a risk that the blade 5 will be shaken or fall during the cutting operation. There is a drawback that a tool such as a hexagon wrench or a screwdriver must be used to tighten the bolt 9 in order to surely obtain the tightening force. SUMMARY OF THE INVENTION An object of the present invention is to provide a blade holding device of a cutting machine which can solve the above-mentioned drawbacks and can securely mount a blade without using a tool or the like.
【０００５】[0005]
【課題を解決するための手段】上記目的は、プランジャ
下端部に、ブレードに当接可能な凸部を有するカムを回
動可能に設けると共にカムをプランジャ先端側に回動さ
せるように押圧する固定片を設けることにより達成され
る。SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotatable cam having a projection which can be brought into contact with a blade at the lower end of a plunger and press the cam so as to rotate the cam toward the tip of the plunger. This is achieved by providing a piece.
【０００６】[0006]
【発明の実施の形態】本発明ブレード保持装置の一実施
例を備えたジグソーの要部拡大断面図を図１に示す。プ
ランジャ４下端部にはプランジャ４内部に突出しながら
回動する凸部１ａを有したカム１が左右対称に２個設け
られている。プランジャ４内部のカム１上方にはプラン
ジャ４の軸方向に移動可能に設けられ、プランジャ４下
端側に移動するとカム１をプランジャ４下端側に回動さ
せるように押圧する可動固定片２が設けられており、可
動固定片２上方には固定輪３が設けられている。カム１
回動時にはカム１の凸部１ａ先端と凸部１ａ先端とが形
成する幅はブレード５の厚さよりも小さくなるようにカ
ム１は形成されている。カム１とカム１との間及び可動
固定片２のブレード挿入穴２ａにブレード５を挿入し、
その後可動固定片２をプランジャ４下端側に移動させる
と、ブレード５はカム１の凸部１ａ先端と凸部１ａ先端
により挟持されプランジャ１に取付けられる。FIG. 1 is an enlarged sectional view of a main part of a jigsaw provided with an embodiment of the blade holding device of the present invention. At the lower end of the plunger 4, two cams 1 having a convex portion 1 a which rotates while protruding into the plunger 4 are provided symmetrically. A movable fixed piece 2 is provided above the cam 1 inside the plunger 4 so as to be movable in the axial direction of the plunger 4, and presses the cam 1 to rotate to the lower end of the plunger 4 when the cam 1 moves to the lower end. A fixed wheel 3 is provided above the movable fixed piece 2. Cam 1
The cam 1 is formed such that the width formed by the tip of the protrusion 1a and the tip of the protrusion 1a of the cam 1 during rotation is smaller than the thickness of the blade 5. The blade 5 is inserted between the cam 1 and the cam 1 and into the blade insertion hole 2a of the movable fixed piece 2,
Thereafter, when the movable fixed piece 2 is moved to the lower end side of the plunger 4, the blade 5 is clamped by the tip of the convex portion 1 a of the cam 1 and attached to the plunger 1.
【０００７】上記した構成とすることにより、可動固定
片２をプランジャ４下端側に移動させた状態で固定する
だけで、すなわち締付力の不足等の心配をせずにブレー
ド５の取付けを確実に行うことができるようになり、切
断作業時にブレード５がぶれてしまう、あるいはブレー
ド５が落下してしまうようなことはなくなる。With the above construction, the blade 5 can be securely attached without moving the movable fixed piece 2 to the lower end of the plunger 4 and fixing the movable fixed piece 2 without worrying about insufficient fastening force. The blade 5 is not shaken during the cutting operation or the blade 5 is not dropped.
【０００８】次に、可動固定片２をプランジャ４下端側
に移動させた状態で保持する手段を備えたブレード保持
装置を図２、図３を用いて説明する。図２はプランジャ
４下端部の側面図、図３はプランジャ４下端部の斜視図
である。図に示すようにプランジャ４外周にはピン８に
より固定補助片６が回動可能に取付けられている。固定
補助片６には溝６ａが設けられており、溝６ａにはプラ
ンジャ４に設けられた長穴４ｃに通され、プランジャ４
内部で可動固定片２の上方に位置する固定輪３が係合可
能である。Next, a blade holding device provided with means for holding the movable fixed piece 2 while moving it to the lower end side of the plunger 4 will be described with reference to FIGS. FIG. 2 is a side view of the lower end of the plunger 4, and FIG. 3 is a perspective view of the lower end of the plunger 4. As shown in the figure, a fixing auxiliary piece 6 is rotatably attached to the outer periphery of the plunger 4 by a pin 8. A groove 6a is provided in the fixing auxiliary piece 6, and the groove 6a is passed through an elongated hole 4c provided in the plunger 4, so that the plunger 4
A fixed wheel 3 located above the movable fixed piece 2 inside can be engaged.
【０００９】固定補助片６をプランジャ４上方側に回動
させた状態として、カム１をプランジャ４上方側に回動
させながらカム１の凸部１ａと凸部１ａとの間及び可動
固定片２のブレード挿入穴２ａにブレード５を挿入し、
その後固定補助片６の溝６ａと固定輪３とを係合させて
固定補助片６をプランジャ４下端側に回動させることに
より、プランジャ４へのブレード５の取付けは終了す
る。固定補助片６の溝６ａと固定輪３とを係合させて固
定補助片６をプランジャ４下端側に回動させると、プラ
ンジャ４内部の固定輪３が可動固定片２をプランジャ４
下端側に押圧して移動させる。これにより、可動固定片
２が２個のカム１をプランジャ４下端側に回動させるよ
うに押圧するので、ブレード５はカム１の凸部１ａ先端
と凸部１ａ先端により挟持される。With the fixing auxiliary piece 6 rotated upwardly of the plunger 4, the cam 1 is rotated upwardly of the plunger 4, and between the convex portions 1 a of the cam 1 and the movable fixed piece 2. Insert the blade 5 into the blade insertion hole 2a of
Thereafter, the groove 6a of the fixing auxiliary piece 6 is engaged with the fixing wheel 3 to rotate the fixing auxiliary piece 6 to the lower end side of the plunger 4, thereby completing the attachment of the blade 5 to the plunger 4. When the groove 6a of the fixed auxiliary piece 6 is engaged with the fixed wheel 3 to rotate the fixed auxiliary piece 6 toward the lower end of the plunger 4, the fixed wheel 3 inside the plunger 4 moves the movable fixed piece 2 to the plunger 4.
Press and move to the lower end side. As a result, the movable fixed piece 2 presses the two cams 1 so as to rotate to the lower end side of the plunger 4, so that the blade 5 is sandwiched between the tips of the convex portions 1 a and 1 a of the cam 1.
【００１０】なお、可動固定片２をプランジャ４下端側
に移動させた状態で保持する手段は上記した構成に限定
されるものではなく、工具等を用いなくとも可動固定片
２をプランジャ４下端側に移動させた状態で保持するこ
とができる構成であれば良い。The means for holding the movable fixed piece 2 moved to the lower end of the plunger 4 is not limited to the above-described configuration, and the movable fixed piece 2 can be moved to the lower end of the plunger 4 without using a tool or the like. Any structure can be used as long as it can be held in a state where it has been moved to the position.
【００１１】上記した実施例では、プランジャ４下端部
にカム１を２個設けた構成としたが、プランジャ４下端
部にカム１を１個設けてカム１の凸部１ａと例えばプラ
ンジャ４内壁とによりブレード５を挟持する構成とした
としても上記実施例と同様の作用効果を得ることができ
る。In the above-described embodiment, two cams 1 are provided at the lower end of the plunger 4. However, one cam 1 is provided at the lower end of the plunger 4, and the protrusion 1a of the cam 1 and the inner wall of the plunger 4, for example, are formed. Accordingly, the same operation and effect as those of the above-described embodiment can be obtained even when the blade 5 is sandwiched.
【００１２】[0012]
【発明の効果】本発明によれば、プランジャ下端部に、
ブレードに当接可能な凸部を有するカムを回動可能に設
けると共にカムをプランジャ先端側に回動させるように
押圧する固定片を設けたので、工具等を使用しなくとも
ブレードの取付けを確実に行うことができる切断機のブ
レード保持装置を提供することができるようになる。According to the present invention, at the lower end of the plunger,
A cam having a protruding part that can contact the blade is provided rotatably and a fixed piece that presses the cam to rotate to the plunger tip side is provided, so that the blade can be securely attached without using tools etc. It is possible to provide a blade holding device of a cutting machine that can be performed at a time.
【図１】本発明ブレード保持装置の一実施例を示す要部
拡大断面図。FIG. 1 is an enlarged sectional view of a main part showing an embodiment of the blade holding device of the present invention.
【図２】本発明ブレード保持装置の一実施例を示す側面
図。FIG. 2 is a side view showing an embodiment of the blade holding device of the present invention.
【図３】本発明ブレード保持装置の一実施例を示す斜視
図。FIG. 3 is a perspective view showing an embodiment of the blade holding device of the present invention.
【図４】従来のブレード保持装置の一例を示す要部拡大
断面図。FIG. 4 is an enlarged sectional view of a main part showing an example of a conventional blade holding device.
１はカム、１ａは凸部、２は可動固定片、３は固定輪、
４はプランジャ、４ｃは長穴、５はブレード、６は固定
補助片である。1 is a cam, 1a is a convex portion, 2 is a movable fixed piece, 3 is a fixed ring,
4 is a plunger, 4c is a long hole, 5 is a blade, and 6 is an auxiliary fixing piece.
Claims (3)
ンジャと、プランジャ下端部に取付けられるブレードと
を有し、ブレードにより切断作業を行う切断機におい
て、 前記プランジャ下端部に、ブレードと当接可能な凸部を
有するカムを回動可能に設けると共にカムをプランジャ
先端側に回動させるように押圧する固定片を設けたこと
を特徴とする切断機のブレード保持装置。1. A cutting machine having a plunger reciprocated in an axial direction by a motor and a blade attached to a lower end of the plunger, and performing a cutting operation with the blade, wherein the blade can contact the lower end of the plunger. A blade holding device for a cutting machine, characterized in that a cam having a large convex portion is rotatably provided and a fixing piece for pressing the cam so as to rotate the cam toward the tip of the plunger is provided.
カムの凸部先端と凸部先端とが形成する幅がブレードの
厚さよりも小さくなるようにカムを形成したことを特徴
とする請求項１記載の切断機のブレード保持装置。2. The cam according to claim 1, wherein two cams are provided symmetrically in a left-right direction, and the cams are formed such that the width formed by the protrusions of the cams is smaller than the thickness of the blade. A blade holding device for the cutting machine according to claim 1.
定輪を通すと共にプランジャ外周にプランジャ上端側か
ら下端側へと回動可能で、固定輪と係合可能な溝を設け
た固定補助片を設け、固定補助片をプランジャ下端側に
回動させると固定輪が固定片をプランジャ下端側に移動
させ、固定片がカムをプランジャ先端側に回動させるよ
うに押圧するようにしたことを特徴とする請求項１ある
いは請求項２記載の切断機のブレード保持装置。3. A fixing auxiliary, wherein a long hole is provided in the plunger, a fixed ring is passed through the long hole, and a groove which is rotatable from the upper end side to the lower end side of the plunger on the outer periphery of the plunger and is engageable with the fixed ring is provided. When the fixing auxiliary piece is turned to the lower end of the plunger, the fixing wheel moves the fixing piece to the lower end of the plunger, and the fixing piece presses the cam to turn to the tip of the plunger. The blade holding device for a cutting machine according to claim 1 or 2, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13307597A JPH10315201A (en) | 1997-05-23 | 1997-05-23 | Blade retainer for cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13307597A JPH10315201A (en) | 1997-05-23 | 1997-05-23 | Blade retainer for cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10315201A true JPH10315201A (en) | 1998-12-02 |
Family
ID=15096268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13307597A Pending JPH10315201A (en) | 1997-05-23 | 1997-05-23 | Blade retainer for cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10315201A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069233A (en) * | 2010-11-25 | 2011-05-25 | 杭州巨星工具有限公司 | Saw |
| US20110131819A1 (en) * | 2003-10-28 | 2011-06-09 | Black And Decker Inc. | Blade clamp for reciprocating saw |
-
1997
- 1997-05-23 JP JP13307597A patent/JPH10315201A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110131819A1 (en) * | 2003-10-28 | 2011-06-09 | Black And Decker Inc. | Blade clamp for reciprocating saw |
| US8327550B2 (en) * | 2003-10-28 | 2012-12-11 | Black & Decker Inc. | Blade clamp for reciprocating saw |
| CN102069233A (en) * | 2010-11-25 | 2011-05-25 | 杭州巨星工具有限公司 | Saw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040622 |
|
| A02 | Decision of refusal |
Effective date: 20041026 Free format text: JAPANESE INTERMEDIATE CODE: A02 |