Abstract: A hinge assembly includes a first connecting member, a second connecting member, and a pivot subassembly. The pivot subassembly connects the first connecting member to the second connecting member. The pivot subassembly includes a rotatable shaft, a sleeve, and a positioning ring. The rotatable shaft is non-rotatably connected to the first connecting member. The sleeve is sleeved on the rotatable shaft, and non-rotatably connected to the rotatable shaft. The positioning ring is non-rotatably connected to the second connecting member. The sleeve defines two positioning cutouts, and the positioning ring defines two positioning protrusions engaging with the positioning cutouts. When the rotatable shaft rotates, one of the sleeve and the positioning ring deforms, so that the at least one positioning protrusion disengages from the at least one positioning cutout.

Abstract: A bumper includes a supporting member, a base, a flange, a connecting arm, and a resetting assembly. The base is fixedly connected to the supporting member. The connecting arm has a rotating portion rotatably positioned between the flange and the supporting member. The resetting assembly includes a resisting member and an elastic member. The resisting member is slidably connected to the supporting member. The elastic member is configured for producing an elastic force to drive the resisting member to resist the rotating portion of the connecting arm. One of the rotating portion and the resisting member defines a receiving groove, and the other one of the rotating portion and the resisting member defines a restricting protrusion rotatably engaging in the receiving groove.

Abstract: A hinge assembly includes a pivot shaft, a rotatable stand, a fixed stand, a cam, a cam follower, and a fastening member. The rotatable stand is non-rotatably connected to the pivot shaft and has a first fixing plate. The fixed stand is rotatably connected to the pivot shaft, and has a second fixing plate. The fastening member engages with an end of the pivot shaft. The cam follower defines two positioning cutouts. Two positioning protrusions are formed on the cam. One of the cam and the cam follower is rotatably connected to the pivot shaft. When the positioning protrusions engage in the positioning cutouts, the first fixing plate is oblique to the second fixing plate.

Abstract: The support stand for a flat-panel display monitor includes a rotatable bracket, a hinge assembly, a base member, a first and a second link brackets. The hinge assembly includes a connecting piece, and a pivotal shaft inserted through the connecting piece and the rotatable bracket. The pivotal shaft forms a restricting flange. The base member includes a supporting block forming a restricting pole. The first link bracket forms two limiting protrusions on the first and second end portions. The first end portions of the first and second link brackets are rotatably connected to the connecting piece, the second end portions of the first and second link brackets are rotatably connected to the supporting block. The two limiting protrusions of the first link bracket abut the restricting flange and the restricting pole respectively, thus adjusting the support stand to move between a first utmost position and a second utmost position.

Abstract: A fastening assembly includes a threaded fastening member, a slidable member, and a resilient member. The threaded fastening member has a threaded portion. The slidable member is slidably sleeved on the threaded fastening member. The slidable member forms a resisting portion defining a threaded hole. The threaded hole is engagable with the threaded portion. The resilient member resists the threaded fastening member and the slidable member. The threaded portion of the threaded fastening member extends through the threaded hole.

Abstract: A hinge assembly includes a base, a joint member, a pintle, and a coiling spring. The joint member is rotatably connected to the base. The pintle runs through the base and the joint member. The coiling spring has a first end and a second end. The first end is fixed relative to the base, and the second end is fixed relative to the joint member.

Abstract: A support stand for display device includes a base seat, an elevating support, and a locking module detachably connected the elevating support to the base seat. The locking module includes a fixing member, a rotating member, an elastic member, and a latching member. The fixing member is fixed on one of the base seat and the elevating support, and the fixing member defines a gap and a latching groove. The rotating member is rotatably extended through the other one of the base seat and the elevating support, and the fixing member. The elastic member is sleeved on the rotating member, and abuts on the fixing member. The latching member is fixed on an end of the rotating member. The latching member is extended through the gap of the fixing member, and is engaged in the latching groove of the fixing member.

Abstract: A hinge assembly includes a rotatable shaft, a fixed stand and a cam rotatably connected to the rotatable shaft, a rotatable stand and a cam follower non-rotatably connected to the rotatable shaft, and an elastic member to provide an elastic force to drive the cam follower to contact the cam. One of the cam and cam follower forms a positioning protrusion, the other of the cam and cam follower defines a positioning groove to engage with the positioning protrusion. The positioning groove has a side wall including a first slanted surface and a second slanted surface connected to each other, the second slanted surface is adjacent to a bottom surface of the positioning groove. A gradient of the first slanted surface relative to the bottom surface of the positioning groove is smaller than that of the second slanted surface relative to the bottom surface of the positioning groove.

Abstract: A stand includes a frame, a sliding member, and two torsion springs. The frame has two guide rail subassemblies. The sliding member is slidably attached to the guide rail subassemblies. A first end of each torsion spring is connected to the frame, and a second end of each torsion spring is connected to the sliding member to provide an elastic force to overcome the total weight of the sliding member and a load.

Abstract: A hinge assembly includes a rotatable shaft, a rotatable stand, a fixed stand, a cam and a cam follower. The rotatable stand and the cam follower are non-rotatably connected to the rotatable shaft. The fixed stand and the cam are rotatably connected to the rotatable shaft. The cam is fixed to the fixed stand and contacted with the cam follower. The cam forms a limiting step, the cam follower forms a limiting surface on a periphery to abut against the limiting step. One of the cam and cam follower forms a positioning protrusion, the other one of the cam and cam follower defines a positioning groove to engage with the positioning protrusion.

Abstract: A hinge assembly includes a pivot shaft, a first supporting member, a second supporting member, a first positioning piece, and a second positioning piece. The first supporting member and the second supporting member are sleeved on the pivot shaft. One of the first supporting member and the second supporting member is non-rotatably connected to the pivot shaft. The first positioning piece and the second positioning piece are sleeved on the pivot shaft, and adjacent to each other. The first positioning piece defines a plurality of positioning protrusions. The second positioning piece defines a plurality of positioning holes for receiving the positioning protrusions. The second positioning piece is elastic. When the first supporting member rotates relative to second supporting member, the second positioning piece deforms.

Abstract: A hinge assembly includes a base, a rotating member, and a connecting member connecting the base to the rotating member. The connecting member is slidably positioned on the base. The rotating member is rotatably positioned on the connecting member. The rotating member relative to the connecting member is able to move to be on an outer side of the base with sliding movement of the connecting member relative to the base.

Abstract: A rotation module includes a base and a rotation member rotatably positioned on the base. The base includes a resisting surface and a connecting surface opposite to the resisting surface. A cylindrical protrusion is formed on the resisting surface. A locking portion is formed at an end of the cylindrical protrusion. The cylindrical protrusion defines an opening through the locking portion. The rotation member includes a bottom surface and a supporting surface opposite to the bottom surface. The rotation member defines a circular through hole. The locking portion is deformable due to the opening so that the cylindrical protrusion is able to pass through the circular through hole. The locking portion releases after the locking portion passes through the circular through hole and resists the rotation member to prevent the rotation member from detaching from the base.

Abstract: A hinge assembly includes a shaft, a first bracket, a resilient member, and an engaging member. The shaft includes a limiting structure including a guiding groove and a limiting slot. The first bracket is rotatable relative to the shaft. The engaging member is rotatably sleeved on the shaft and non-rotatable relative to the first bracket. The engaging member forms a latching pole slidably received in the guiding groove and being engagable with the limiting slot of the shaft.

Abstract: A support stand includes a support body, a connecting member, a fastening assembly. The support body defines an assembling hole. The connecting member is received in the assembling hole of the support body, and defines an engaging hole. The fastening assembly is positioned on the support body. The fastening assembly includes a follower. The follower has a positioning pole. The follower is movably connected to the support body, so that the positioning pole is capable of engaging/disengaging in the engaging hole of the connecting member.

Abstract: An exemplary sliding mechanism (100) used for a sliding-type portable electronic device, includes a sliding member (10), a sliding member (20), and a sliding module (30). The main housing defines a curved sliding groove (203) therein. The sliding module includes two movable arms (301, 302), an elastic member (50) positioned between the two movable arms, and two sliding pegs (402, 404). The sliding pegs are partially received in the sliding groove of the main housing. A first end of each movable arm is rotatably attached to the sliding member, and a second end opposite to the first end of each movable arm is fixed to one of the sliding pegs. Two ends of the elastic member are correspondingly fixed to the two movable arms for driving the movable arms to move towards each other.

Abstract: A hinge assembly includes a stationary member, a rotating member, and a pivotal shaft. The stationary member forms a position protrusion. The rotating member defines a receiving depression to receive the position protrusion. The pivotal shaft includes an elastic portion. The stationary member and the rotating member are positioned on the pivotal shaft such that the position protrusion is received in the receiving depression. The rotating member is non-rotatable relative to the pivotal shaft. The stationary member is rotatable relative to the pivotal shaft. The elastic portion deforms to push the rotating member to firmly engage the stationary member.

Abstract: A support stand for a flat-panel display monitor includes a mounting base, a connecting base, and two link shafts. Each link shaft has a first end rotatably connected to the mounting base and a second end rotatably connected to the connecting base. The support stand further includes a restricting pole fixed to the mounting base and positioned between the two link shafts, the restricting pole abuts against the two link shafts, thus restricting a rotary range of the two link shafts.

Abstract: An exemplary hinge assembly includes a rotatable shaft, a rotatable stand, a fixed stand, an elastic member, and a retaining ring. The rotatable stand is non-rotatably connected to the rotatable shaft. The fixed stand and an elastic member are connected to the rotatable shaft. A flange is formed on a proximal end of the rotatable shaft, and a positioning groove is defined in a distal end of the rotatable shaft. The rotatable stand, the fixed stand and the elastic member are positioned between the flange and the positioning groove of the rotatable shaft. The retaining ring engages in the positioning groove of the rotatable shaft, thereby producing an elastic force along the rotatable shaft.

Abstract: A display device includes a display monitor, a supporting portion formed on a bottom surface of the display monitor, and a support stand fixed on the display monitor. The supporting portion and the support stand cooperatively support the display monitor. The support stand includes a connecting member fixed on the display monitor and a sliding member sleeved on the connecting member. The sliding member slides along the connecting member to change the length of the support stand, thus adjusting the viewing angle of the display monitor.