| 摘要 |
A steering mechanism (14) and a locking mechanism (80) are disclosed in their most preferred form for use in a mobile floor treating machine (10) including first and second handles (68, 70) which are pivotally mounted to the machine chassis (12). The handles (68, 70) pivot L-shaped levers (28, 46) which are pivotably mounted to a bracket (58) which is connected to the gear box for rotating treating members (16, 18). The bearing blocks (22) of the shafts (20) of the treating members (16, 18) are pivotably connected via spherical rod ends (36, 52) to the horizontal legs (26) of the levers (28, 46). Therefore, the shafts (20) and thus treating members (16, 18) can be tilted to create a pressure differential on the contact area of the treating members (16, 18) with the floor surface. The pressure differential creates a corresponding differential in the frictional contact of the treating members (16, 18) with the floor surface which then urges the machine (10) in a direction opposite the direction the treating member (16, 18) is rotating. The locking mechanism (80) includes a plunger (86) which is selectively slideably mounted in a tube (82) of the first handle (68) into a tube (84) of the second handle (70). The plunger (86) is biased into the tube (82) and in a noninterlocking position with handle (70) by a tension spring (92) anchored between the tube (82) and the plunger (86). The plunger (86) is slid within the tube (82) by a knob (88) which is attached to the plunger (86) and extends through an elongated slot (90) formed in the tube (82).
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