| 摘要 |
PURPOSE:To make possible to automatically couple and discouple modular tools, by providing a draw bar integrally with a coupling pawl, retractably and rotatably, and by providing a rack pinion mechanism for meshing a modular tool with an engaging section. CONSTITUTION:An axially retractable and rotatable draw bar 8 is inserted into an axial guide hole 7 formed in the axial core of a body 4. Further, the draw bar 8 is provided, in its rear end section, integrally with a flange section 9 and a piston section 10 which are axially retractably and rotatably disposed in a spring chamber 11 and a cylinder chamber 12, respectively. Meanwhile, in the intermediate section of the draw bar 8, there is provided a pinion 19 which constitutes a pinion mechanism, along the outer peripheral surface of the draw bar 8. Further, a retractable rack 21 meshed with the pinion 19 is disposed in a guide groove 20 formed in the inner peripheral section of the guide hole in a part opposing the pinion 19.
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