| 摘要 |
<p>A dual-action sander (10) comprises a housing (12), a motor (18) mounted in the housing, a motor shaft balancer (20) driven by the motor (18) for rotation relative to the housing about a first axis (24), a balancer shaft (30) carried by the balancer (20) for rotation relative thereto about a second axis (32) radially offset relative to the first axis and having a mount for mounting a sanding device (34), and a latch pin (50) slidably supported by the balancer (20) for movement axially thereof between unlatched and latched positions. The latch pin (50) has a first end (50a) engageable with the balancer shaft (30) when the latch pin is in the latched position, thereby to prevent rotation of the shaft relative to the balancer about the second axis (32). A manually operable control member (60) carried by the housing is engageable with a second end (50b) of the latch pin (50) and is movable to displace the pin into the latched position against a spring force biasing the pin towards the unlatched position. <IMAGE></p> |
