Abstract: A hinge assembly includes a sleeve, a rotation shaft, and a sealing subassembly. The rotation shaft is partially received in the sleeve. The sealing subassembly seals the sleeve. The sleeve defines a pivot hole, and an inner side wall defining the pivot hole defines a restricting portion. The rotation shaft has a shaft portion and a buffer portion extending from a side wall of the shaft portion. The shaft portion is received in the pivot hole of the sleeve, and the buffer portion is received in the restricting portion of the sleeve. Damping oil is used between the inside of the sleeve and the rotation shaft.

Abstract: A linkage mechanism includes a fixing member, a rotary member, a support member and a sliding module. A first end of the rotary member is rotatably assembled to the fixing member. A first end of the support member is rotatably hinged to the second end of the rotary member, and the second end of the support member is hinged with the sliding module. The sliding module includes a sliding member and a sliding rod slidably assembled to the sliding member. The sliding member is slidably mounted to the fixing member, and further hinged to the second end of the support member. The sliding member defines a sliding hole. The sliding rod is rotatably assembled to the rotary member together with the fixing member, and further slidably passing through the sliding hole of the sliding member. An electronic device using the linkage mechanism is also provided.

Abstract: A hinge assembly includes a first bracket, a second bracket, a damping member, and a torsion resilient member. The first bracket defines a damping protrusion. The second bracket is rotatable relative to the first bracket. The damping member defines a depression. The damping protrusion is configured to engage with the depression. The torsion resilient member urges the first bracket to rotate relative to the second bracket and the damping member. The engagement of damping protrusion and the depression prevents the first bracket from rotating when the first bracket rotates through a predetermined angle. When the first bracket rotates through the predetermined angle relative to the second bracket and the damping member, the first bracket together with the damping member are rotatable relative to the second bracket to any desired angle.

Abstract: A hinge assembly includes a shaft, a rotary member, and a tube. The rotary member includes a friction body and is fixed to the shaft. The tube rotatably engages with the friction body of the rotary member. When the tube rotates to a predetermined position relative to the rotary member, the friction body deforms, thereby generating friction between the friction body and the tube.

Abstract: A support mechanism includes a pivoting assembly and a support member. The pivoting assembly includes a fixing member, a sliding member slidably mounted on the fixing member, a pivoting shaft rotatably connected to one end of the fixing member, and at least one torsion spring sleeved on and coiling around the pivot shaft. The torsion spring includes two assembling legs, one assembling leg of the torsion spring elastically resists against the fixing member. The support member is fixed to the sliding member.

Abstract: A hinge mechanism includes two pivot shafts substantially parallel to each other, two main gears non-rotatably respectively sleeved on the pivot shafts, a transmission assembly positioned between the two pivot shafts to transmit a torque of one of the two main gears to the other in a reverse direction, and a connecting member defining two shaft holes. The pivot shafts are respectively rotatably received in the shaft holes. Two contact assemblies are respectively mounted on the pivot shafts abutting the connecting member. One of the connecting member and each main gear forms at least one detent, and the other defines at least one recess correspondingly. The at least one detent is received in the at least one recess.

Abstract: A hinge assembly includes a first connecting member, a second connecting member, a rotary member, an elastic member, and a limiting member. The rotary member includes a first pivot portion to engage with the first connecting member and a second pivot portion to engage with the second connecting member. The elastic member is disposed between the second connecting member and the rotary member. The limiting member is positioned on the second connecting member. A sidewall of one of the second pivot portion of the rotary member and the second connecting member defines a limiting structure. The limiting member is disposed on a sidewall of the other one of the second pivot portion of the rotary member and the second connecting member. The limiting member slidably engages with the limiting structure.

Abstract: A collapsible computer mouse includes a main cover, a collapsible portion, and a hinge assembly hinging the main cover and the collapsible portion. The hinge assembly includes a first bracket, a second bracket, a restricting member, at least one resilient member, a fastener, a third bracket, and a connecting member. The first bracket, the second bracket, the restricting member, the resilient member, and the fastener are sleeved on the shaft. A protrusion is formed on of the first bracket or the restricting member, and a sliding slot is defined in the other. Elastic force created by the resilient member engages the protrusion in the sliding slot, such that the hinge assembly is self-locking.

Abstract: A hinge mechanism includes a first rotation assembly, a second rotation assembly substantially parallel to the first rotation assembly, a first connection member, and a second connection member. The first and second rotation assemblies include a first and second pivoting shafts and a first and second brackets sleeved on the first and second pivoting shafts, respectively, and both the first and second brackets includes an engaging portion eccentrically formed on one end respectively thereof. The first connection member includes two pivotal portions. The pivotal portions are rotatably connected to the engaging portions of the first bracket and the second bracket, respectively. The second connection member is sleeved on the first pivoting shaft and the second pivoting shaft.

Abstract: A hinge mechanism includes a pivot shaft, a resilient member coiling around the pivot shaft, a first cam, a second cam, and a rolling assembly. The pivot shaft defines a through hole in a radial direction thereof. The first cam and the second cam are sleeved on the pivot shaft, the first cam defines two pairs of recesses at one end surface thereof, and the second cam defines a groove at one end surface thereof facing the first cam. The rolling assembly positioned between the first cam and the second cam includes a pin and two rolling bearings sleeved on opposite ends of the pin.

Abstract: The embodiment includes a hinge, a pivot shaft, a cam, and a cam follower. The pivot shaft includes an engaging portion bound by two curved surfaces and two non-rotatable surfaces. The cam is non-rotatably sleeved on the engaging portion of the pivot shaft and defines a noncircular hole and two cutouts. The noncircular hole is bound by two first contact surfaces and two second contact surfaces. The second contact surfaces are tangent to the curved surfaces of the engaging portion of the pivot shaft. The cam follower is rotatably sleeved on the engaging portion of the pivot shaft and resists the cam. The cam follower forms two peaks engaging with the cutouts in the cam.

Abstract: A coupling mechanism includes a pivot assembly and a lifting assembly. The pivot assembly includes a first bracket, a pivot pin, a second bracket, and a cam piece. The second bracket is rotatably mounted to the first bracket via the pivot pin and has a valley portion recessed from one surface thereof. The cam piece is mounted to the pivot pin for holding the second bracket at any angle. The cam piece has a peak portion formed on one surface thereof and received in the valley portion of the second bracket at a closed position. The lifting assembly is adjustably assembled to the second bracket such that the lifting assembly is pivotally assembled with the first bracket.

Abstract: A hinge assembly includes a shaft, a rotary member, and a tube. The rotary member includes a friction body and is fixed to the shaft. The tube rotatably engages with the friction body of the rotary member. When the tube rotates to a predetermined position relative to the rotary member, the friction body deforms, thereby generating friction between the friction body and the tube.

Abstract: A hinge assembly includes a first bracket, a second bracket, a damping member, and a torsion resilient member. The first bracket defines a damping protrusion. The second bracket is rotatable relative to the first bracket. The damping member defines a depression. The damping protrusion is configured to engage with the depression. The torsion resilient member urges the first bracket to rotate relative to the second bracket and the damping member. The engagement of damping protrusion and the depression prevents the first bracket from rotating when the first bracket rotates through a predetermined angle. When the first bracket rotates through the predetermined angle relative to the second bracket and the damping member, the first bracket together with the damping member are rotatable relative to the second bracket to any desired angle.

Abstract: An exemplary double hinge assembly (30) includes a first hinge subassembly (31), a second hinge subassembly (32), a first bracket (35), a second bracket (36) and a connecting member. The first hinge subassembly (31) includes a first rotatable pivot shaft (311). The second hinge subassembly (32) includes a second rotatable pivot shaft (321). The first bracket (35) is fixed to the first rotatable pivot shaft (311), and the second bracket (36) is fixed to the second rotatable pivot shaft (321). The first hinge subassembly (31) and the second hinge subassembly (32) are rotatably mounted to the connecting member respectively. A rotating axis of the first rotatable pivot shaft (311) is substantially parallel to a rotating axis of the second rotatable pivot shaft (321). In addition, an electronic device (50) using the double hinge assembly (30) is also provided.

Abstract: A hinge assembly includes a first connecting member, a second connecting member, a rotary member, an elastic member, and a limiting member. The rotary member includes a first pivot portion to engage with the first connecting member and a second pivot portion to engage with the second connecting member. The elastic member is disposed between the second connecting member and the rotary member. The limiting member is positioned on the second connecting member. A sidewall of one of the second pivot portion of the rotary member and the second connecting member defines a limiting structure. The limiting member is disposed on a sidewall of the other one of the second pivot portion of the rotary member and the second connecting member. The limiting member slidably engages with the limiting structure.

Abstract: A collapsible computer mouse includes a main cover, a collapsible portion, and a hinge assembly hinging the main cover and the collapsible portion. The hinge assembly includes a first bracket, a second bracket, a restricting member, at least one resilient member, a fastener, a third bracket, and a connecting member. The first bracket, the second bracket, the restricting member, the resilient member, and the fastener are sleeved on the shaft. A protrusion is formed on of the first bracket or the restricting member, and a sliding slot is defined in the other. Elastic force created by the resilient member engages the protrusion in the sliding slot, such that the hinge assembly is self-locking.

Abstract: A hinge assembly includes a first rotation member and a second rotation member. The first rotation member includes an elastic coiled support portion. The second rotation member includes an elastic rotation portion. The rotation portion defines a cavity. The support portion is rotatably received in the cavity of the rotation portion.

Abstract: An exemplary dual-axis hinge mechanism includes a base seat, a first rotatable assembly and a second rotatable assembly. The first rotatable assembly includes a rotary member rotatably assembled in the base seat, a steady member and an elastic member non-rotatably received in the base seat, and a fastening member. The rotary member includes a rotational shaft configured for extending through the steady member, the elastic member, the base seat, and then engages with the fastening member. Each of the rotary member and the steady member defines an engaging surface. The engaging surfaces movably engage with each other. The fastening member is rotatable along the rotational shaft for adjusting an external force for rotating the rotary member. The second rotatable assembly includes a pivotal shaft fixed to the rotary member, and a bracket pivotally assembled on the pivotal shaft.