A positioning locking mechanism of a rotational member comprising a rotational positioning member provided with a positioning groove; a rotational member pivotally connected with the rotational positioning member and rotating around the rotational positioning member; a positioning member arranged in the rotational member and movably meshed with the positioning groove; and a locking operation member arranged in the rotational member to control the motion of the positioning member. The positioning locking mechanism can effectively ensure that the positioning and locking of the rotational member cannot be invalid due to accident collision or component fatigue.

A hinge device according to the present invention includes a pivotable member pivotable relative to a fixed member around a first screw member or a second screw member serving as a pivot shaft. A rotation restricting washer is disposed between a movable plate portion of the pivotable member and a bearing face of the second screw member. The rotation restricting washer is disposed non-turnably relative to a support plate portion of the fixed member by fitting a restricting piece disposed on one of the support plate portion and the rotation restricting washer into a receiving portion disposed on the other one of the support plate portion and the rotation restricting washer.

A folding mechanism is disclosed. A first connecting portion is connected to a first rotating shaft, a second connecting portion is connected to a second rotating shaft, the first and second rotating shaft are rotatably connected to a first elastic connector, a first gear is mounted on the first rotating shaft, a second gear is mounted on the second rotating shaft and meshed with the first gear, the first gear has a first distal edge and a first proximal edge, the second gear has a second distal edge and a second proximal edge, the first elastic connector is elongated or shortened with meshed rotation of the first gear and the second gear, and the folding mechanism has a first state in which the first distal edge is meshed with the second distal edge, and a second state in which the first proximal edge is meshed with the second proximal edge.

A one-way braking hinge capable of self-aligning a shaft and a one-way clutch is provided. The one-way braking hinge (10) includes a first leaf (1), a shaft (3) rotatably supported by the first leaf (1), at least one resistance part (4) that resists rotation of the shaft (3), a second leaf (2) rotatably coupled to the shaft (3), a one-way clutch (12) into which the shaft (3) is inserted, and a position adjusting member (11) to which the one-way clutch (12) is fixed. The position adjusting member (11) is position-adjustably coupled to the second leaf (2).

A connecting structure includes a coating component provided with a storage cavity and a first through hole, an expansion component provided with a second through hole and a first fastener. A part of the expansion component is stored in the storage cavity. The expansion component has a rotary state and a fixed state relative to the coating component. When the expansion component is in the rotary state, the expansion component can be rotated relative to the coating component. The first fastener can pass through the first through hole and extend into the second through hole to make the expansion component expand. The outer surface of the expansion component is pressed against the inner surface of the coating component to fix the expansion component in the coating component. The expansion component is in the fixed state relative to the coating component.

In one example, a hinge assembly is disclosed, which may include a band torque engine having at least one bearing portion and a vertical torque engine coupled to the band torque engine. The vertical torque engine may have an opening. The hinge assembly may include a first shaft received through the at least one bearing portion and the opening. The first shaft may be rotatable along an axis with respect to the band torque engine and the vertical torque engine. The hinge assembly may include a display bracket including an adaptor portion to hold the first shaft such that the first shaft rotates along with the display bracket. The band torque engine may provide a frictional torque and the vertical torque engine may compressively engage with the first shaft to provide a vertical frictional torque during rotation of the display bracket.

A stop switch assembly includes a movable block, a pressing portion, a driving rod, a driving pin and an elastic member. The movable block includes a first pair and a second pair of opposite side surfaces, a hole is defined in the movable block passing through the first pair of side surfaces and an inclined slot is defined in the movable block passing through the second pair of side surfaces. The driving pin is inserted in the driving rod with its head movably arranged in the inclined slot. The elastic member is arranged between the pressing portion and the movable block for applying an elastic bias to the pressing portion to allow the pressing portion being away from the movable block. When the pressing part is pressed, the driving pin slides in the inclined slot and drives the movable block moving between a first position and a second position.

A ball channel and ball channel assembly are disclosed with the ball channel having a channel top, a channel bottom, and an inner portion including a first inner sidewall, a second inner sidewall, a first end wall, and a second end wall. A first resilient tab extends from the first inner sidewall with a first tab end surface, and a second resilient tab extends from the second inner sidewall with a second tab end surface. An elongated gutter extends longitudinally along the inner portion and adjacent the channel bottom, wherein the combination of the first and second tab end surfaces and a gutter top surface form a ball track for receiving a head of a ball stud and allowing secured sliding longitudinal movement of the head. An outer portion is also provided having a flange wall that is configured to engage a receiving wall of a mounting panel.

An angle adjustable bicycle saddle contains a seat post, a cushion, and a locking unit. The seat post includes an inwardly curved groove having multiple protrusions, and the seat post includes multiple troughs. The cushion includes a body and a cap. The body has a curved holder, an arcuate abutting projection, multiple engagement portions, and multiple through holes for corresponding to the multiple troughs. The cap is covered on the curved holder of the body so that the curved holder has a hollow portion. The locking unit includes multiple fixing elements and multiple stepped nuts. A respective fixing element is inserted through a respective trough and a respective through hole. A first end of a respective fixing element is adjustably received in a respective trough, and a second end of the respective fixing element is accommodated in the hollow portion of the curved holder.

A mount assembly for a portable electronic device, comprising: a first component including a receiving surface arranged to engage against a surface of a portable electronic device; a second component including a mounting surface arranged to engage with a carrier; and a third component including a first surface that cooperates with a surface of the first component to allow the first component to rotate relative to the third component; and a second surface that cooperates with a surface of the second component to allow the third component to tilt relative to the second component. The mount assembly further comprises a locking member connecting the first and third components such that the first component moves with the third component when the third component tilts relative to the second component and that, when in a locked position, is arranged to prevent the relative movement between the first, second and third components.