Angle nut runner

#The present invention relates to a nut runner for performing tightening work and loosening work of bolts & nuts and screws, more specifically an angle nut runner having an output shaft pivotally supported approximately perpendicular to the rotating shaft of the drive source.

#Conventionally, nut runners are widely used as a tool for performing tightening work and loosening work of bolts & nuts and screws.

#Nut runners are roughly classified as straight nut runners having an output shaft pivotally supported on a straight line against the rotating shaft of the drive source, and angle nut runners having an output shaft pivotally supported approximately perpendicular to the rotating shaft 1 of the drive source M. Angled nut runners are applied to tightening work and loosening work at comparatively narrow points where a straight nut runner cannot be used, as shown in FIG. 3.

#FIG. 1 indicates an embodiment of the angle nut runner according to the present invention, (a) being a front sectional view, and (b) a sectional view A-A of (a).

#FIG. 2 indicates a modified embodiment of the angle nut runner according to the present invention, (a) being a front sectional view of main part, and (b) a front sectional view of the attachment.

#FIG. 3 is a front sectional view showing a conventional angle nut runner.

#An embodiment of the angle nut runner according to the present invention will be explained below, with reference to drawings.

#FIG. 1 illustrates an embodiment of the angle nut runner according to the present invention.

#This angle nut runner is an angle nut runner having an output shaft 2 pivotally supported approximately perpendicular to the rotating shaft 1 of the drive source, such as electric motor, air motor, etc. (not illustrated), wherein a strain measuring mechanism 3 for measuring a strain generated in the output shaft 2 is disposed on the output shaft 2.