| 摘要 |
PURPOSE: To simplify a structure and attain an operation of a lock mechanism without for connection range receiving any load in an axial direction by constituting a central axial line of an aperture on a terminal surface of a housing eccentrically against a longitudinal axial line of a receiving space in a sleeve and constituting a longitudinal axial line of a connecting member displaceable between two different longitudinal axial lines in the case that the sleeve is positioned after being returned against an action of a spring. CONSTITUTION: When a thrust force F acts on an operative knob 14 from outside, a receiving space 21 of a sleeve 20 opens a connecting member 30, and then the connecting member can be removed from an aperture 15 with a minimum tensile force B only by shifting the member aside. In the case of closing the lock mechanism, a pushing force G enough to compress a spring 12 onto a connecting member 30 until an enough space is obtained in a housing 10, then the connecting member 30 is shifted aside to conform a longitudinal axial line of the connecting part with a longitudinal axial line of the sleeve 20. Thus, the sleeve 20 is moved forward immediately by an action of the spring 12 and the connecting part 30 is fixed at a coaxial position wherein removal from the aperture 15 is impossible. |
