JP5637587B2 - Detachable coupling of mixing shaft of stirring device - Google Patents

Detachable coupling of mixing shaft of stirring device Download PDF

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JP5637587B2
JP5637587B2 JP2010134707A JP2010134707A JP5637587B2 JP 5637587 B2 JP5637587 B2 JP 5637587B2 JP 2010134707 A JP2010134707 A JP 2010134707A JP 2010134707 A JP2010134707 A JP 2010134707A JP 5637587 B2 JP5637587 B2 JP 5637587B2
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coupling
mixing shaft
receiving portion
locking
slide cover
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JP2012000526A (en
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好一 加藤
好一 加藤
是和 奥谷
是和 奥谷
明 大橋
明 大橋
光城 久保田
光城 久保田
亘 南舘
亘 南舘
正雄 三浦
正雄 三浦
雅範 服部
雅範 服部
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Satake Chemical Equipment Mfg Ltd
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Description

本発明は、液体原料等の撹拌や混合を行なうための撹拌装置、特に可搬形撹拌機の如き小形の撹拌装置に関する。   The present invention relates to a stirring device for stirring and mixing liquid raw materials and the like, and more particularly to a small stirring device such as a portable stirrer.

撹拌装置は、回転軸の先端部に撹拌翼（インペラ）を固定したミキシングシャフトを撹拌液中に没入させ、該ミキシングシャフトを回転駆動して撹拌を行なっている。   The stirrer stirs a mixing shaft in which a stirring blade (impeller) is fixed at the tip of a rotating shaft in a stirring liquid and rotationally drives the mixing shaft.

然して撹拌目的によっては、内容物に応じて日々ミキシングシャフトを交換する必要があり、このため、頻繁にミキシングシャフトを撹拌装置の回転駆動部に取り付けたり取り外したりする作業を行なう必要があった。   However, depending on the purpose of stirring, it is necessary to replace the mixing shaft on a daily basis depending on the contents. For this reason, it is necessary to frequently attach and remove the mixing shaft to and from the rotation drive unit of the stirring device.

従来、可搬形撹拌機の回転駆動部にミキシングシャフトを取り付ける場合は、図７に示す如く、ミキシングシャフトの回転軸ａを回転駆動部の円筒状に形成されたカップリングｂに嵌入し、これをボルトｃにて固定していた。   Conventionally, when the mixing shaft is attached to the rotation drive part of the portable agitator, as shown in FIG. 7, the rotation shaft a of the mixing shaft is fitted into the coupling b formed in the cylindrical shape of the rotation drive part, It was fixed with bolts c.

尚、工作機械にワークをチャックするための装置として、ワークをチャック本体に爪又はコレットで締め付けて固定する方法が知られている。   As a device for chucking a workpiece on a machine tool, a method is known in which the workpiece is fixed to the chuck body by claw or collet.

例えば内径コレットチャックとして、径方向に拡大縮小可能に形成され、先端部に被保持物を保持するコレットと、コレットの外周に嵌合される規制体とを備えた例がある（特許文献１参照。）。   For example, as an inner diameter collet chuck, there is an example provided with a collet that is formed so as to be able to be enlarged / reduced in the radial direction and holds an object to be held at a tip portion, and a regulating body that is fitted to the outer periphery of the collet (see Patent Document 1) .)

特開２００４−２５３４９号公報JP 2004-25349 A

前記ミキシングシャフトの回転軸ａをカップリングｂの穴に挿通してボルトｃで固定する従来の方法は、ボルトの取付け不良によるミキシングシャフトの脱落事故が生じたり、ボルトやカップリングのねじ山が潰れることでミキシングシャフトの取付けが不可能になる等の問題があった。   In the conventional method in which the rotating shaft a of the mixing shaft is inserted into the hole of the coupling b and fixed with the bolt c, the mixing shaft falls off due to poor mounting of the bolt, or the screw thread of the bolt or coupling is crushed. As a result, there was a problem that it was impossible to mount the mixing shaft.

また、前記コレットチャックの方法は、構造が複雑となるため装置がコストアップとなる問題があった。   Further, the collet chuck method has a problem that the structure is complicated and the cost of the apparatus is increased.

本発明はこれらの問題点を解消し、頻繁にミキシングシャフトの着脱を必要とする場合のために、ボルトを使わずに簡単に着脱が可能で、ミキシングシャフト脱落の危険性も無く、且つ安価に製造できるような撹拌装置のミキシングシャフトの着脱カップリングを提供することを目的とする。   The present invention solves these problems, and can be easily attached / detached without using bolts for cases where the attachment / detachment of the mixing shaft is frequently required. It is an object of the present invention to provide a detachable coupling for a mixing shaft of a stirring device that can be manufactured.

本発明は上記の目的を達成すべく、撹拌翼と回転軸とからなるミキシングシャフトを回転駆動部に係脱自在に係着する構造の撹拌装置において、前記ミキシングシャフトの根部に側方へ向けて突出する係止突起を突設し、前記回転駆動部に、前記ミキシングシャフトの根部が嵌入可能な軸穴と前記係止突起が挿通移動可能な軸方向スリットとを有するカップリング受け部を形成すると共に、該カップリング受け部の該軸方向のスリットの側方部に前記係止突起が移行係止可能な係止凹部を凹設し、該係止突起の前記係止凹部からの係脱を規制する係脱規制手段を具備し、前記係脱規制手段は、前記カップリング受け部の外周部に摺動可能に嵌挿するスライドカバーと、該スライドカバーの内周部に設けられ前記軸方向スリットに係合する移動可能な規制突起とからなる。 In order to achieve the above object, the present invention provides a stirring device having a structure in which a mixing shaft composed of a stirring blade and a rotary shaft is detachably engaged with a rotary drive unit, and is directed laterally to the root of the mixing shaft. A protruding locking protrusion is provided so as to form a coupling receiving portion having a shaft hole into which a root portion of the mixing shaft can be inserted and an axial slit into which the locking protrusion can be inserted and moved. In addition, a locking recess is provided in the side portion of the axial slit of the coupling receiving portion to which the locking projection can be transferred and locked, and the locking projection is disengaged from the locking recess. The engagement / disengagement restricting means includes a slide cover that is slidably inserted into an outer peripheral portion of the coupling receiving portion, and an axial direction provided on the inner peripheral portion of the slide cover. Move to engage the slit Consisting of the ability regulatory projections.

本発明によれば、ミキシングシャフトを回転駆動部に係脱自在に係着する構造の撹拌装置において、ミキシングシャフトの回転駆動部への取付け取外しが容易で、ミキシングシャフトが回転駆動部から脱落する危険性がなく、ミキシングシャフトを頻繁に回転駆動部に着脱するのに適した着脱カップリングを安価に提供できる効果を有する。   According to the present invention, in the stirring device having a structure in which the mixing shaft is detachably engaged with the rotation drive unit, the mixing shaft can be easily attached to and detached from the rotation drive unit, and the mixing shaft may be detached from the rotation drive unit. Therefore, it is possible to provide an attachment / detachment coupling suitable for attaching / detaching the mixing shaft to / from the rotary drive unit at low cost.

本発明のミキシングシャフトの着脱カップリングを使用した撹拌装置の実施例１の外形図である。It is an external view of Example 1 of the stirring apparatus using the attachment / detachment coupling of the mixing shaft of this invention. 同上実施例１におけるミキシングシャフトの着脱カップリングの一部截断面図である。FIG. 3 is a partial cross-sectional view of the mixing shaft attachment / detachment coupling according to the first embodiment. 同上着脱カップリングの一部カップリング受け部の側面図である。It is a side view of the partial coupling receiving part of a detachable coupling same as the above. 同上着脱カップリングの一部スライドカバーの側面図である。It is a side view of the partial slide cover of a detachable coupling same as the above. 同上スライドカバーの図４におけるＢ−Ｂ線截断面図である。FIG. 5 is a cross-sectional view taken along the line BB in FIG. 4 of the slide cover. 同上着脱カップリングの図２におけるＡ−Ａ線截断面図である。FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2 of the detachable coupling. 従来のミキシングシャフトの着脱カップリングを使用した撹拌装置の外形図である。It is the external view of the stirring apparatus using the attachment / detachment coupling of the conventional mixing shaft.

本発明を実施するための形態の実施例を以下に示す。   The example of the form for carrying out the present invention is shown below.

図１は本発明のミキシングシャフトの着脱カップリングを使用した撹拌装置の外形図であり、１がミキシングシャフト、２がミキシングシャフト１の着脱カップリングである。   FIG. 1 is an external view of a stirring device using a mixing shaft attachment / detachment coupling according to the present invention, wherein 1 is a mixing shaft, and 2 is an attachment / detachment coupling of a mixing shaft 1.

ミキシングシャフト１はその下端部に撹拌翼１ａを固定して有している。   The mixing shaft 1 has a stirring blade 1a fixed to its lower end.

前記着脱カップリング２は、前記ミキシングシャフト１の根部と係合する円筒状のカップリング受け部３と、該カップリング受け部３の外周部に設けた係脱規制手段４とを有している。   The detachable coupling 2 includes a cylindrical coupling receiving portion 3 that engages with a root portion of the mixing shaft 1, and an engagement / disengagement restricting means 4 provided on an outer peripheral portion of the coupling receiving portion 3. .

尚、５は前記カップリング受け部３を回転駆動する回転駆動部である。   Reference numeral 5 denotes a rotational drive unit that rotationally drives the coupling receiving unit 3.

前記着脱カップリング２の構造の詳細を図２及び図３により説明する。   Details of the structure of the detachable coupling 2 will be described with reference to FIGS.

ミキシングシャフト１の根部１ｂは円柱状に形成され、該根部１ｂに貫通孔を形成して該貫通孔にコッタピン１ｃを嵌入固定し、該根部１ｂより突出した該コッタピン１ｃの両端部を係止突起１ｄに形成した。   The root portion 1b of the mixing shaft 1 is formed in a columnar shape, and a through hole is formed in the root portion 1b, and a cotter pin 1c is fitted and fixed in the through hole. Formed in 1d.

前記カップリング受け部３は前記根部１ｂが嵌入する軸穴３ａを有する円筒状で、回転駆動部５に垂設されており、その下端部の周壁の両側方に上下方向即ち軸方向スリット３ｂが形成されており、更に該周壁において該軸方向スリット３ｂの途中で横方向に延びる横方向スリットの係止凹部３ｃが形成されている。   The coupling receiving portion 3 has a cylindrical shape having a shaft hole 3a into which the root portion 1b is fitted, and is suspended from the rotation driving portion 5. Vertical and axial slits 3b are formed on both sides of the peripheral wall of the lower end portion. Further, a locking recess 3c of a lateral slit extending in the lateral direction is formed on the peripheral wall in the middle of the axial slit 3b.

前記軸方向スリット３ｂは、前記係止突起１ｄが移動可能な溝幅を有しており、又、前記係止凹部３ｃは前記軸方向スリット３ｂにＴ字状に交差していて前記係止突起１ｄが移行して係合可能に形成されている。   The axial slit 3b has a groove width through which the locking projection 1d can move, and the locking recess 3c intersects the axial slit 3b in a T shape so that the locking projection 1d is formed so that it can be engaged by shifting.

前記カップリング受け部３は上方部の外径が下方部の外径より少し小の段違い部３ｄを有する２段構造に形成されており、該カップリング受け部３の外周部には円筒状のスライドカバー４ａが該カップリング受け部３の外周部に沿って軸方向に摺動可能に嵌着されている。   The coupling receiving portion 3 is formed in a two-stage structure having a stepped portion 3d in which the outer diameter of the upper portion is slightly smaller than the outer diameter of the lower portion, and the outer periphery of the coupling receiving portion 3 has a cylindrical shape. A slide cover 4 a is fitted along the outer periphery of the coupling receiving portion 3 so as to be slidable in the axial direction.

前記スライドカバー４ａの側面図を図４に、又、同スライドカバー４ａの図４におけるＢ−Ｂ線截断面図を図５に示した。   A side view of the slide cover 4a is shown in FIG. 4, and a cross-sectional view taken along the line BB in FIG. 4 of the slide cover 4a is shown in FIG.

４は係脱規制手段を示し、該係脱規制手段４は前記スライドカバー４ａと、規制突起４ｂとからなる。   Reference numeral 4 denotes an engagement / disengagement restricting means, and the engagement / disengagement restricting means 4 includes the slide cover 4a and the restricting projection 4b.

該スライドカバー４ａの内径部は前記カップリング受け部３の外径部に対応した２段構造となっており、この段違い部４ｃにおいて、前記カップリング受け部３の段違い部３ｄと当接して、スライドカバー４ａがカップリング受け部３から抜け出すのを防止するストッパーとして作用している。   The inner diameter portion of the slide cover 4a has a two-step structure corresponding to the outer diameter portion of the coupling receiving portion 3, and the stepped portion 4c is in contact with the stepped portion 3d of the coupling receiving portion 3, It acts as a stopper that prevents the slide cover 4a from coming out of the coupling receiving portion 3.

又、スライドカバー４の内周部には、前記カップリング受け部３の軸方向スリット３ｂ内を係合しながら移動可能な前記規制突起４ｂが突設されている。   Further, on the inner peripheral portion of the slide cover 4, the restricting projection 4 b is provided so as to be movable while engaging in the axial slit 3 b of the coupling receiving portion 3.

即ち該規制突起４ｂは四角形の立法体状で、ボルト４ｄによってスライドカバー４ａに固定されている。   That is, the restricting protrusion 4b is a quadrangular body and is fixed to the slide cover 4a by the bolt 4d.

前記スライドカバー４が前記カップリング受け部３の外周部に沿って上下に摺動するとき、前記規制突起４ｂも前記軸方向スリット３ｂに沿って上下に移動する。   When the slide cover 4 slides up and down along the outer periphery of the coupling receiving portion 3, the restriction projection 4b also moves up and down along the axial slit 3b.

上記各部の相関関係を図６に示した。尚、図６は図２におけるＡ−Ａ線截断面図である。   The correlation between the above parts is shown in FIG. 6 is a cross-sectional view taken along line AA in FIG.

次に本実施例のミキシングシャフトの着脱カップリング２の使用方法及びその効果等について説明する。   Next, a method of using the detachable coupling 2 of the mixing shaft of the present embodiment and the effects thereof will be described.

ミキシングシャフト１の根部１ｂをカップリング受け部３に係合させるときは、該根部１ｂが軸穴３ａ内に嵌入していくのに連れて根部１ｂに貫設されているコッタピン１ｃの両端部の係止突起１ｄが前記カップリング受け部３の軸方向スリット３ｂに沿って進み、該軸方向スリット３ｂ内に移動自在に嵌入している前記規制突起４ｂと当接して、該規制突起４ｂを前記スライドカバー４ａと共に上方へ押し上げるように作動する。   When the root portion 1b of the mixing shaft 1 is engaged with the coupling receiving portion 3, the both ends of the cotter pin 1c extending through the root portion 1b as the root portion 1b is fitted into the shaft hole 3a. The locking projection 1d advances along the axial slit 3b of the coupling receiving portion 3 and comes into contact with the regulating projection 4b that is movably fitted in the axial slit 3b. It operates to push upward together with the slide cover 4a.

かくて、前記係止突起１ｄの頭部が前記軸方向スリット３ｂの中間の側方部にＴ字状に連設されている係止凹部３ｃにまで達したとき、前記ミキシングシャフト１を少許右方へ回転させて、前記係止突起１ｄを前記係止凹部３ｃ内に移行させる。   Thus, when the head of the locking projection 1d reaches the locking recess 3c that is connected to the intermediate side portion of the axial slit 3b in a T-shape, the mixing shaft 1 can be moved slightly to the right. The locking projection 1d is moved into the locking recess 3c.

このように係止突起１ｄが係止凹部３ｃ内に移行した後、前記軸方向スリット３ｂの上方部に押し上げられている前記規制突起４ｂを前記スライドカバー４と共に降下させて、該規制突起４ｂが前記係止凹部３ｃへの開口部を塞ぐ位置で前記軸方向スリット３ｂ内に留まるようにする。   After the locking protrusion 1d thus moves into the locking recess 3c, the restriction protrusion 4b pushed up above the axial slit 3b is lowered together with the slide cover 4 so that the restriction protrusion 4b It stays in the axial slit 3b at a position where the opening to the locking recess 3c is closed.

かくて、回転駆動部５によって着脱カップリング２を回転駆動したとき、前記ミキシングシャフト１は緩むことなく着脱カップリング２と共に回転して撹拌を行なうので、シャフト脱落等の危険性がなく安全である。   Thus, when the detachable coupling 2 is rotationally driven by the rotation drive unit 5, the mixing shaft 1 rotates together with the detachable coupling 2 without being loosened and is agitated. .

又、ミキシングシャフト１を着脱カップリング２から取り外す時は、前記スライドカバー４ａを持ち上げてからミキシングシャフト１を左方向に少許回転させて係止突起１ｄを軸方向スリット３ｂ内に移し、然る後にミキシングシャフト１を引き抜けば、容易にミキシングシャフト１を着脱カップリング２から取り外すことができる。 When the mixing shaft 1 is removed from the detachable coupling 2, the slide cover 4a is lifted and then the mixing shaft 1 is rotated slightly to the left to move the locking projection 1d into the axial slit 3b. By pulling out the mixing shaft 1, the mixing shaft 1 can be easily detached from the detachable coupling 2.

このように本発明の撹拌装置のミキシングシャフトの着脱カップリングはミキシングシャフトの着脱が容易であり、シャフト脱落等の危険性がなく、しかも構造が簡単なので製作コストが安くなる効果を有している。   Thus, the mixing shaft attachment / detachment coupling of the agitator of the present invention has the effect that the mixing shaft can be easily attached / detached, there is no risk of dropping off the shaft, etc. .

本発明のミキシングシャフトの着脱カップリングは、特に可搬形撹拌機の如き小形の撹拌装置に利用される。   The mixing shaft detachable coupling of the present invention is used in a small stirring device such as a portable stirrer.

１ ミキシングシャフト
１ｄ 係止突起
２ 着脱カップリング
３ カップリング受け部
３ａ 軸穴
３ｂ 軸方向スリット
３ｃ 係止凹部
４ 係脱規制手段
４ａ スライドカバー
４ｂ 規制突起
５ 回転駆動部 DESCRIPTION OF SYMBOLS 1 Mixing shaft 1d Locking protrusion 2 Detachable coupling 3 Coupling receiving part 3a Shaft hole 3b Axial slit 3c Locking recessed part 4 Engagement / removal restricting means 4a Slide cover 4b Restriction protrusion 5 Rotation drive part

Claims (4)

撹拌翼と回転軸とからなるミキシングシャフトを回転駆動部に係脱自在に係着する構造の撹拌装置において、前記ミキシングシャフトの根部に側方へ向けて突出する係止突起を突設し、前記回転駆動部に、前記ミキシングシャフトの根部が嵌入可能な軸穴と前記係止突起が挿通移動可能な軸方向スリットとを有するカップリング受け部を形成すると共に、該カップリング受け部の該軸方向のスリットの側方部に前記係止突起が移行係止可能な係止凹部を凹設し、該係止突起の前記係止凹部からの係脱を規制する係脱規制手段を具備し、
前記係脱規制手段は、前記カップリング受け部の外周部に摺動可能に嵌挿するスライドカバーと、該スライドカバーの内周部に設けられ前記軸方向スリットに係合する移動可能な規制突起とからなるミキシングシャフトの着脱カップリング。 In a stirring device having a structure in which a mixing shaft composed of a stirring blade and a rotary shaft is detachably engaged with a rotation drive unit, a locking projection that protrudes laterally protrudes from a root portion of the mixing shaft, and A coupling receiving portion having a shaft hole into which a root portion of the mixing shaft can be fitted and an axial slit into which the locking projection can be inserted and moved is formed in the rotational drive portion, and the axial direction of the coupling receiving portion A locking recess that allows the locking projection to be transferred and locked is formed in a side portion of the slit, and includes engagement / disengagement restricting means for restricting engagement / disengagement of the locking projection from the locking recess ,
The engagement / disengagement restricting means includes a slide cover that is slidably fitted on an outer peripheral portion of the coupling receiving portion, and a movable restricting protrusion that is provided on the inner peripheral portion of the slide cover and engages with the axial slit. Detachable coupling of mixing shaft consisting of 前記係止凹部は前記軸方向スリットにＴ字状に交差する横方向スリットからなる請求項１に記載のミキシングシャフトの着脱カップリング。 The mixing shaft detachable coupling according to claim 1, wherein the locking recess comprises a lateral slit that intersects the axial slit in a T-shape . 前記ミキシングシャフトを前記カップリング受け部に嵌入させるときは、前記係止突起が前記軸方向スリット内を上方向へ移動して、該軸方向スリット内にある前記規制突起を前記スライドカバーと共に上方へ押し上げるように作動し、該係止突起が前記軸方向スリットと直交する係止凹部に到って該係止突起が該係止凹部内に移行した後に前記規制突起が前記軸方向スリット内を降下して、前記係止突起が前記係止凹部から逸脱するのを阻止するように形成した請求項１又は請求項２に記載のミキシングシャフトの着脱カップリング。 When the mixing shaft is fitted into the coupling receiving portion, the locking projection moves upward in the axial slit, and the regulating projection in the axial slit moves upward together with the slide cover. Actuating up, the locking projection reaches the locking recess perpendicular to the axial slit and the locking projection moves down into the locking recess and then the regulating projection descends in the axial slit The mixing shaft detachable coupling according to claim 1 or 2 , wherein the locking projection is formed so as to prevent the locking protrusion from deviating from the locking recess . 前記カップリング受け部の後方部の外径を該カップリング受け部の前端部の外径よりも細くして該カップリング受け部を段違い部を有する２段構造に形成すると共に、該カップリング受け部の外周部に摺動可能に設けた前記スライドカバー内径部を該カップリング受け部の外径に対応する段違い部を有する２段構造に形成して、前記カップリング受け部の段違い部と前記スライドカバーの段違い部とが当接して前記スライドカバーが前記カップリング受け部から抜け出すのを防止するストッパーとなるように形成した請求項１又は請求項３に記載のミキシングシャフトの着脱カップリング。 The outer diameter of the rear portion of the coupling receiving portion is made smaller than the outer diameter of the front end portion of the coupling receiving portion to form the coupling receiving portion in a two-stage structure having a stepped portion, and the coupling receiver The inner diameter portion of the slide cover provided slidably on the outer peripheral portion of the portion is formed in a two-stage structure having a stepped portion corresponding to the outer diameter of the coupling receiving portion, and the stepped portion of the coupling receiving portion and the The detachable coupling for a mixing shaft according to claim 1 or 3 , wherein the coupling is formed so as to be a stopper that prevents the slide cover from coming out of the coupling receiving portion by abutting against a stepped portion of the slide cover .
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