Patent ID: 8640841
Filing Date: 2014-02-04
Classification: B60N

Abstract:
1. A bidirectional driving device, characterized by comprising a ratchet wheel, a movable handle, a fixed casing and a central shaft passing through the movable handle and the fixed casing, wherein: a handle reset spring is disposed at an inner hole of the ratchet wheel, a first free end and a second free end of the handle reset spring are placed in a fourth sliding slot of the fixed casing after passing through a third sliding slot of the movable handle, a first pawl and a second pawl located in the same mounting plane are disposed between the ratchet wheel and the movable handle, wherein the first pawl comprises a first boss, a first positioning column, and the second pawl comprises a second boss, a second tooth section and a second positioning column; the first positioning column and the second positioning column are configured for connecting the movable handle, and the first boss and the second boss are placed in a first sliding slot and a second sliding slot of the fixed casing, respectively, a pawl reset spring is connected with the first boss, the second boss and the central shaft, such that the first tooth section and the second tooth section have a tendency to move toward ratchet teeth of the ratchet wheel, when a force is present to cause the movable handle to rotate with the central shaft as a center, the tooth section of one of the first pawl and the second pawl is engaged with the ratchet teeth, the tooth section of the other is disengaged from the ratchet teeth, whereby the ratchet wheel is driven to rotate synchronically, and when the force is removed, the handle returns to the original position under the action of the handle reset spring.