
-14-
Fig. 6
3. "3-Mode" Changeover Mechanism
The change lever of the Model DH 22PH permits quick and easy changeover among the "rotation and
hammering,” ”rotation only” and “hammering only” functions. Each function mode is explained below.
When operating the change lever, be sure to hold down the pushing button.
(1) Rotation and hammering (Fig. 6)
Set the change lever to "rotation and hammering" ( marks). Armature rotation is transmitted to the
first gear and second shaft, and then to the clutch via the spline of the second shaft. Claws on the end
surface of the clutch engage with matching claws of the reciprocating bearing (at A in the figure) to
convert the rotation into reciprocating motion. The three claws on the tip of the second shaft are
constantly engaged with the three matching claws of the pinion sleeve, and second shaft rotation is
transmitted to the pinion sleeve. Then the claws on the large-dia. portion of the pinion sleeve engage
with the second pinion (at B in Fig. 7) to transmit rotation to the second gear and the cylinder.
A
Clutch
Washer
Reciprocating bearing
Clutch spring
Second pinion
Lock plate
Pinion sleeve
Spring (C)
Change lever
Содержание DH 22PH
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