Abstract: A sliding rail transmission device and a vehicle include a driving portion and at least one sliding rail assembly, the sliding rail assembly includes a rail and a movable member, the rail is provided with a flanging which extends downward, the flanging forms a first transmission toothed belt, and the rail is provided with a damping strip at a position of the first transmission toothed belt, the damping strip forms a second transmission toothed belt, the first transmission toothed belt and the second transmission toothed belt are arranged side by side, the movable member is provided with a transmission gear, the transmission gear is arranged below the first transmission toothed belt and the second transmission toothed belt, and the transmission gear can mesh with the first transmission toothed belt and the second transmission toothed belt simultaneously; and the driving portion drives the transmission gear to rotate to drive the movable member to move along the rail.

Abstract: A bidirectional driving device includes a ratchet wheel, a movable handle, a fixed casing, a pawl reset spring, a handle reset spring and a central shaft. The handle reset spring is in an inner hole of the ratchet wheel. A positioning column of the handle reset spring is placed in sliding slots of the movable handle and of the fixed casing. First and second pawls are disposed between the ratchet wheel and the movable handle. Tooth sections of the first and second pawls are engaged with ratchet teeth of the ratchet wheel. Positioning columns of the first and second pawls are connected with the movable handle. Bosses of the first and second pawls are placed in sliding slots of the fixed casing, each composed of two circular arc slot sections with different radius. The pawl reset spring is connected with the bosses and with the central shaft.

Abstract: Disclosed is a bidirectional self-locking device including a housing (10) and a gear shaft (20). A first locking device and a second locking device are disposed in the housing (10). When a first locking cam (30) is driven to rotate in a first direction, protuberances on both sides of the first locking cam (30) are respectively in contact with a first locking element (31) and a second locking element (32), such that the first locking element (31) and the second locking element (32) tend to move radially outward and thus tightly press against an inner wall of the housing (10) so as to form a locking engagement. The second locking device has a similar structure to that of the first locking device. When a second locking cam (40) is rotated in a direction opposite to the first direction, a third locking element (41) and a fourth locking element (42) press against the inner wall of the housing (10) so as to form a locking engagement.

Abstract: Disclosed is a bidirectional self-locking device including a housing (10) and a gear shaft (20). A first locking device and a second locking device are disposed in the housing (10). When a first locking came (30) is driven to rotate in a first direction, protuberances on both sides of the first locking cam (30) are respectively in contact with a first locking element (31) and a second locking element (32), such that the first locking element (31) and the second locking element (32) tend to move radially outward and thus tightly press against an inner wall of the housing (10) so as to form a locking engagement. The second locking device has a similar structure to that of the first locking device. When a second locking cam (40) is rotated in a direction opposite to the first direction, a third locking element (41) and a fourth locking element (42) press against the inner wall of the housing (10) so as to form a locking engagement.

Abstract: A bidirectional driving device includes a ratchet wheel, a movable handle, a fixed casing, a pawl reset spring, a handle reset spring and a central shaft. The handle reset spring is in an inner hole of the ratchet wheel, A positioning column of the handle reset spring is placed in sliding slots of the movable handle and of the fixed casing. First and second pawls are disposed between the ratchet wheel and the movable handle. Tooth sections of the first and second pawls are engaged with ratchet teeth of the ratchet wheel. Positioning columns of the first and second pawls are connected with the movable handle. Bosses of the first and second pawls are placed in sliding slots of the fixed casing, each composed of two circular arc slot sections with different radius. The pawl reset spring is connected with the bosses and with the central shaft.