Abstract: A joint has a first leaf having an inner gear and a second leaf having an external gear meshing with the inner gear. A stub with a wedge-shaped outer periphery is formed on the first leaf. A driving member is non-rotatably attached to a shaft and rotatably received between the leaves. A supporting base is mounted between the leaves and is actuated by the driving member. At least one driven wedge-shaped segment is mounted around the stub. Each segment has an inner wedge-shaped surface to mate with the outer wedge-shaped outer periphery of stub. A wedge arrangement is arranged between the supporting base and each segment to raise the segment as the driving member is rotated with the shaft. Accordingly, the angle between the leaves can be adjusted, and the shaking of the second leaf with respect to the first leaf can be prevented.

Abstract: A joint has a first leaf having an inner gear and a second leaf having an external gear meshing with the inner gear. A driving wedge-shaped disk is non-rotatably attached to a shaft and rotatably received between the leaves. A block with an outer wedge-shaped resistant surface is formed on the driving wedge-shaped disk. At least one driven wedge-shaped segment is mounted around the driving wedge-shaped disk. Each segment has an inner wedge-shaped surface to mate with the outer wedge-shaped resistant surface of block. A wedge arrangement is arranged between a supporting base on the disk and each segment to raise the segment as the driving wedge-shaped disk is rotated with the shaft. Accordingly, the angle between the first leaf and the second leaf can be adjusted. In addition, the shaking of the second leaf with respect to the first leaf can be prevented.

Abstract: A joint has a first leaf having an inner gear and a second leaf having an external gear meshing with the inner gear. A stub with a wedge-shaped outer periphery is formed on the first leaf. A driving member is non-rotatably attached to a shaft and rotatably received between the leaves. A supporting base is mounted between the leaves and is actuated by the driving member. At least one driven wedge-shaped segment is mounted around the stub. Each segment has an inner wedge-shaped surface to mate with the outer wedge-shaped outer periphery of stub. A wedge arrangement is arranged between the supporting base and each segment to raise the segment as the driving member is rotated with the shaft. Accordingly, the angle between the leaves can be adjusted, and the shaking of the second leaf with respect to the first leaf can be prevented.

Abstract: A joint has a first leaf having an inner gear and a second leaf having an external gear meshing with the inner gear. A driving wedge-shaped disk is non-rotatably attached to a shaft and rotatably received between the leaves. A block with an outer wedge-shaped resistant surface is formed on the driving wedge-shaped disk. At least one driven wedge-shaped segment is mounted around the driving wedge-shaped disk. Each segment has an inner wedge-shaped surface to mate with the outer wedge-shaped resistant surface of block. A wedge arrangement is arranged between a supporting base on the disk and each segment to raise the segment as the driving wedge-shaped disk is rotated with the shaft. Accordingly, the angle between the first leaf and the second leaf can be adjusted. In addition, the shaking of the second leaf with respect to the first leaf can be prevented.