A three-state bidirectional clutch

Abstract

The application provides a three-state bidirectional clutch, which comprises an inner ring, an outer ring, rollers, shift forks and bearings, the inner ring is arranged in the outer ring, and shift claws are uniformly arranged along the outer circle of the inner ring and the outer ring; the shift forks are provided with the rollers therebetween, the diameter of the roller is smaller than the distance between the shift forks; the shift forks and the inner ring are supported by the bearings, the shift forks, the inner ring and the outer ring can rotate relative to each other under the action of the bearings, the shift fork is a rotary piece with a vane at one end, the vane drives the shift fork to move the roller in the direction opposite to the outer ring, the clutch can be overhauled at the passive end regardless of the direction, and the clutch can be wedged at the active end regardless of the direction.

Claims

1. A three-state bidirectional clutch, comprising an inner ring (1), an outer ring (2), rollers (3), a shift fork (4), and a bearing (6), characterized in that: The inner ring (1) is set on the outer ring (2), and forks (4) are evenly arranged along the outer circumference of the inner ring (1) between the inner ring (1) and the outer ring (2). Rollers (3) are arranged between the forks (4) and the rollers (3) with a diameter smaller than the distance between the forks (4). The forks (4) and the inner ring (1) are supported by bearings (6). Under the action of the bearings (6), the inner ring (1) and the outer ring (2) can rotate relative to each other. The forks (4) are rotating parts with blades at one end. The blades drive the forks (4) to move the rollers (3) in the opposite direction to the outer ring (2). On the inner circumference of the outer ring (2) in the direction corresponding to the length of the roller (3), there is a sloping or eccentric arc surface structure. The sloping or eccentric arc surface structure is combined with the outer surface of the inner ring (1) to form a cavity with a large gap in the middle and a small gap on both sides. The cavity encloses the roller (3). When the roller (3) is in the middle position of the cavity, there is a gap b between it and the outer ring (2). When the roller (3) moves to both sides of the cavity, it will wedge the inner ring (1) and the outer ring (2) to rotate together. The outer ring (2) has an end face groove with an opening width greater than the blade thickness on one side near the blade of the shift fork (4), and the blade extends into the groove; threaded holes are provided on the body on both sides of the opening of the outer ring (2), and a compression spring (9) and an adjusting screw (10) are provided in the threaded holes. The compression spring (9) is pressed against both sides of the blade of the shift fork (4), and the blade can be kept in the middle position of the groove width of the outer ring (2) by adjusting the spring force by the screw (10).

2. A three-state bidirectional clutch according to claim 1, characterized in that, The bearing (6) is also surrounded by a spacer (5), a shaft clip (7) and a hole clip (8) for axial positioning.

Images