| 摘要 |
A push-on/quick release locking arrangement is mounted on a socket wrench extension having a cylindrical body with a square drive end. An inclined transverse bore in the drive end intersects opposed flat faces of the drive end and lock balls are mounted in the bore for movement between a "lock" position and a "release" position. In the "lock" position one ball projects from the end of the bore nearest the end of the drive end to engage a cooperating cavity in the drive recess of a socket. In the "release" position the balls lie within the cross section of the drive end. There is an axial groove in the flat face intersected by the end of said bore further from the end of the drive end. A cylindrical grip sleeve is mounted for slideable movement on the cylindrical body of the extension. The end of said sleeve remote from the drive end is turned inwardly and a cylindrical slider is fixed in the other end of the sleeve. A spring is captured inside the sleeve between the inturned end and the slider. A coil of the spring is captured in a groove in the cylindrical body so the spring bears against the slider to bias the slider and the sleeve towards the drive end and a lock tab projecting from the slider into the axial groove will overlie the lock ball when the inturned end of the sleeve abuts the spring coil. The flat(s) on the sleeve prevent the extension from rolling when laid down.
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