JPH042394B2

JPH042394B2 -

Info

Publication number: JPH042394B2
Application number: JP15714783A
Authority: JP
Priority date: 1983-08-30
Filing date: 1983-08-30
Publication date: 1992-01-17
Also published as: JPS6052286A

Description

【発明の詳細な説明】（技術分野）本考案はエアーチヤツクに関する。[Detailed description of the invention] (Technical field) The present invention relates to an air truck.

（背景技術）第２図は従来のエアーチヤツクの一般的な構造
を示しており、この種のエアーチヤツクでは本体
７に内蔵されている２ケのピストン９，９′を圧
縮空気の力によつて矢印で示すように外側に押し
出し、本体７の左右ピン１１，１１′を介し回動
自在に枢着された２ケの爪８，８′の基部を押圧
しその先端を互いに閉じ合わすことができ、一
方、圧縮エアーの力を解除すると爪８，８′はバ
ネ１０によつて互いに引張られ再び先端開の状態
にもどるように構成されている。(Background Art) Fig. 2 shows the general structure of a conventional air chuck. As shown in , it is possible to press the bases of the two claws 8, 8' rotatably connected via the left and right pins 11, 11' of the main body 7, and close their tips together. On the other hand, when the force of the compressed air is released, the claws 8, 8' are pulled together by the spring 10 and return to the open state again.

しかるに、このような構造の場合、各爪８，
８′の開閉方向に比較的大きなスペースを要する
と同時に、通常その直角方向も圧縮空気の取入口
を配するためデツドスペースとなる。したがつ
て、複数個のエアーチヤツクを高密度に配置する
ことが難しく、エアーチヤツクによる部品供給等
の場合にスペース上の制限が生じるという欠点が
あつた。 However, in the case of such a structure, each claw 8,
A relatively large space is required in the opening/closing direction of the opening 8', and at the same time, a compressed air intake is normally arranged in the direction perpendicular to the closing direction, resulting in a dead space. Therefore, it is difficult to arrange a plurality of air chucks at a high density, and there is a drawback in that space is limited when parts are supplied by the air chucks.

（発明の目的）本発明は上記の点に鑑み提案されたもので、そ
の目的とするところは、駆動用ピストンを可動爪
に内蔵し本体の周囲の所要スペースを少なくして
エアーチヤツクの小型化を図り、上述のような制
限を生ずることなく２ケのエアーチヤツクを短ピ
ツチで対向あるいは複数個を並列に配置すること
などを可能にすることにある。(Objective of the Invention) The present invention has been proposed in view of the above points, and its purpose is to reduce the space required around the main body by incorporating the driving piston into the movable claw, thereby reducing the size of the air chuck. The object of the present invention is to make it possible to arrange two air arches facing each other in a short distance or to arrange a plurality of them in parallel without causing the above-mentioned limitations.

（発明の開示）以下、図に沿つて本発明を説明する。(Disclosure of invention) The present invention will be explained below with reference to the drawings.

第１図は本発明の一実施例を示しており、同図
において１は全体として略丸棒状を呈する本体で
あり、その長溝部１ａには爪２の枢着部２ａがは
まつている。４はピンで、このピン４は本体１及
び爪２の枢着部２ａの両者を貫く形で配置され、
かつ本体１の両側から外部に突設されたピン４の
周囲、本体１および爪２の係合部２ｂにはバネ５
が巻き付けられている。 FIG. 1 shows an embodiment of the present invention. In the figure, 1 is a main body having a generally round bar shape, and a pivot portion 2a of a claw 2 is fitted into a long groove portion 1a of the main body. 4 is a pin, and this pin 4 is arranged so as to penetrate both the main body 1 and the pivot portion 2a of the claw 2,
Also, springs 5 are provided around the pins 4 protruding from both sides of the main body 1 and around the engaging portions 2b of the main body 1 and the claws 2.
is wrapped around it.

しかして、ピストン３は爪２の上部２ｃに内蔵
され、かつピストン３を駆動させる圧縮空気の供
給用ホース６が接続されている。 The piston 3 is housed in the upper part 2c of the claw 2, and a compressed air supply hose 6 for driving the piston 3 is connected thereto.

次に本発明の動作を説明する。 Next, the operation of the present invention will be explained.

いま、爪２の上部２ｃに取付けられ、かつピス
トン３に接続されたエアーホース６より圧縮空気
を供給すると、爪２内のピストン３が本体１の方
向に押し出される。その結果、爪２の上部２ｃは
バネ５のバネ力に抗して本体１より遠ざかると同
時にピン４を中心として爪２は回転し、爪２の挾
持用先端部およびこの爪２の下端部と相俟つて挾
持部として作用する本体１の挾持用下端１ｂでワ
ークがチヤツキングされる。 Now, when compressed air is supplied from an air hose 6 attached to the upper part 2c of the claw 2 and connected to the piston 3, the piston 3 inside the claw 2 is pushed out in the direction of the main body 1. As a result, the upper part 2c of the claw 2 moves away from the main body 1 against the spring force of the spring 5, and at the same time, the claw 2 rotates around the pin 4, and the clamping tip of the claw 2 and the lower end of this claw 2 The workpiece is chucked by the clamping lower end 1b of the main body 1, which also functions as a clamping part.

一方、圧縮エアーの力を解除すると、爪２の上
部２ｃがバネ５の作用によつて本体１側に押し付
けられ爪２が回動することによつて爪２の挾持用
先端部は挾持用下端１ｂから離間しチヤツキング
が開の状態となる。 On the other hand, when the force of the compressed air is released, the upper part 2c of the claw 2 is pressed against the main body 1 side by the action of the spring 5, and the claw 2 rotates, so that the gripping tip of the claw 2 changes to the lower gripping end. It is separated from 1b and the chuck is in an open state.

（発明の効果）以上のように本発明によれば、先端部に挾持用
下端が設けられた本体と、この本体に一部が枢着
され、かつ該枢着部を介し回動自在な爪と、この
爪および前記本体間に取付けられ、爪の上部を前
記本体側に付勢するバネと、前記爪の上部に内蔵
され、圧縮空気供給により前記バネのバネ力に抗
して爪上部を前記本体から離間せしめ爪を回動さ
せ、かつ爪の挾持用先端部を前記本体の挾持用下
端側に接近させるピストンとを備えて構成したか
ら、エアーチヤツクにおける本体の周囲には大き
なスペースを必要とせず、２ケのエアーチヤツク
を対向あるいは複数個を並列に配置することが可
能となり、高密度に配置されたワークを同時チヤ
ツキンすることができる効果がある。(Effects of the Invention) As described above, according to the present invention, there is provided a main body in which a lower end for clamping is provided at the distal end, and a claw that is partially pivotally attached to the main body and is rotatable via the pivot portion. A spring is attached between the claw and the main body, and biases the upper part of the claw toward the main body; Since the air chuck is equipped with a piston that rotates the claws to separate them from the main body and brings the clamping tips of the claws closer to the lower clamping end of the main body, a large space is not required around the main body of the air chuck. First, it becomes possible to arrange two air chucks facing each other or a plurality of air chucks in parallel, which has the effect of simultaneously chucking highly densely arranged workpieces.

[Brief explanation of drawings]

第１図は本発明の一実施例を示す斜視図、第２
図は従来例を示す半断面側面図である。１……本体、１ａ……長溝部、１ｂ……挾持用
下端、２……爪、２ａ……枢着部、３……ピスト
ン、５……バネ、６……ホース。 Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a half-sectional side view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Main body, 1a... Long groove part, 1b... Lower end for clamping, 2... Claw, 2a... Pivot part, 3... Piston, 5... Spring, 6... Hose.

Claims

[Claims]

1. A main body with a lower end for clamping at the tip, a claw that is partially pivoted to the main body and is rotatable via the pivot joint, and a claw that is attached between the claw and the main body, a spring that biases the upper portion toward the main body;
Built in the upper part of the claw, the upper part of the claw is separated from the main body by supplying compressed air against the spring force of the spring, and the claw is rotated, and the clamping tip of the claw is moved toward the lower clamping end of the main body. An air chuck comprising a piston that brings the piston close to the piston.