Abstract: A hinge assembly (100) includes a sleeve (20), a main shaft (10), a follower (30) and an elastic member (40). The sleeve integrally forms an engaging portion (26). The main shaft passes through the sleeve. The follower has a cam surface (322), and is slidably placed around the main shaft and is received in the sleeve. The cam surface engages with the engaging portion. The elastic member provides an elastic force to bias the cam surface against the engaging portion.

Abstract: A hinge mechanism includes a shaft (1), a cam follower (12), a cam (2), an antifriction member (3), a washer (4) and an elastic member (5). The cam follower is fixed relative to the shaft and has a cam follower surface. The cam has a cam surface (24) and a cam hole defined therein. The cam is rotatable relative to the cam follower. The shaft runs through the cam, the washer and the elastic member, in turn. The antifriction member has one end touching the cam and an opposite end touching the washer. The cam surface abuts against the cam follower surface due to the elastic force of the elastic member. As the friction coefficient between the antifriction member and washer is smaller than that between the cam and the washer, the hinge mechanism generates a smaller friction therebetween, so the waste of energy is very small.

Abstract: A hinge assembly (100) is provided for joining a flip cover (204) to a main body (202) of a foldable electronic device. A hinge assembly includes a hinge shaft (10), a follower (12), and a cam (20). The follower has an outer peripheral portion. The outer peripheral portion has opposite two ends. The cam has a cam hole (22) closely receiving the follower therein. Then cam has an inner peripheral portion movably contacting the outer peripheral portion. The outer peripheral portion is in the form of a screw formed by a cross-section of the follower rotated from one end to the other. The inner peripheral potion is rifled to receive the follower.

Abstract: A hinge assembly (200) includes a retaining member (101), a fixing seat (5), a control member (6), a first spring (7), a follower (300), a cam (400), a second spring (9) and a shaft (20). The button has at least one pushing portion (31). The control member has at least one receiving groove (61), and the pushing portion is received in each receiving groove. Each pushing portion resists the control member. The first spring provides an elastic force to the control member. The cam includes an axis hole having an inner screw thread (4342). The second spring provides an elastic force to make the cam and the follower resist each other. The shaft defines an outer screw thread (233). The outer screw thread engages with the inner screw thread of the cam.

Abstract: A hinge assembly (10) includes a shaft (12) and a follower (16), wherein one of the shaft and the follower defines a thread (122), the other of the shaft and the follower includes at least one resisting portion (166). The thread is separately formed from one of the shaft and the follower with the thread and the shaft and the follower slide and rotate relative to each other. Since the thread is separately formed therewith, the thread may be formed by injection mold. This manufacture method is easy. In addition, the thread may be made of wear resistant material. The thread is not easy to be abraded, thereby the work being stable.

Abstract: A hinge assembly (10) includes a shaft (12), a follower (16), and a driving means. The shaft has a screw portion (122) defined thereon. The follower has a screw hole (164) defined therein. The screw hole engages with the screw portion of the shaft. The driving means is configured for providing a driving force which makes the follower rotate relative to the shaft. The hinge assembly has only three main components, and occupies a relatively small volume. Accordingly, the space required in an application such as a mobile phone is reduced. In addition, that the engagement of the screw portion and the screw hole of the follower can dampen the opening action of the flip cover, thus protecting the flip cover from damage.

Abstract: A hinge assembly (100) includes a shaft (13), a cam (14), a follower (15), a first spring (12), a control member (17), a second spring (16), and a fixing seat (18). The shaft defines a thread (1311). The cam has a cam surface (146), a cam hole (141) and an inner circumferential surface. The inner circumferential surface includes a protrusion (142) configured engaged the thread of the shaft. The control member has at least one reverse slot (173). The circumferential surface includes at least one block (184). The at least one block is received in the at least one reverse slot of the control member so as to lock the control member into the fixing seat. The hinge assembly allows for the automatic opening and closing of the device to which the hinge assembly is incorporated.

Abstract: A hinge assembly (100) includes a shaft (10), a follower (12), a cam (20), a friction-reducing mechanism (30), and an urging means. The shaft includes a securing portion (11) formed thereon. The follower is connected with the shaft. The cam essentially is in the shape of a cylinder, and includes a cam surface (24) and defines a cam hole (22) extending therethrough. The cam hole receives the shaft therethrough. The friction-reducing mechanism is located around the shaft, and includes a rolling means. A first end of the urging means abuts against the shaft, and an opposite second end of the urging means biases the friction-reducing mechanism. The friction-reducing mechanism is disposed between the cam and the urging means. The cam surface of the cam is rotatably and movably engaged with the follower under force of the urging means.

Abstract: A hinge assembly (200) includes a retaining member (4), a fixing seat (5), a control member (6), a first spring (7), a follower element (10), a rotating element (20), a second spring (9) and a shaft (30). The first spring provides an elastic force to the control member. The rotating element includes an axis hole having an inner screw thread (4342). The rotating element disposes two protrusions (24). The follower element includes two recesses (15) and two plane portions (16). The second spring provides an elastic force to make the protrusions of the rotating element receive in the recesses of the follower element and resist each other. The shaft defines an outer screw thread (233). The outer screw thread engages with the inner screw thread of the rotating element.

Abstract: A hinge assembly (10) includes a shaft (12) and a follower (16), wherein one of the shaft and the follower define a thread (122), the other of the shaft and the follower disposes at least one resisting portion (166), and the shaft and the follower slide and rotate relative to each other. The hinge assembly is that it has only three main components, and occupies a relatively small volume.

Abstract: A hinge assembly (200) for joining a cover section (110) to a body section (120) of a foldable electronic device (100) includes a main shaft (10), a rotating member (20), a sliding member (30), and a spring (40). The main shaft has a fixing portion (12) at one end, a deformed shaft portion (14) at its central section, and a distal shaft portion (16) at the other end. The rotating member receives the distal shaft portion, and the rotating member includes an engaging portion (24). The sliding member engages with the deformed shaft portion. The sliding member has a deformed hole (34), engaging with the engaging portion of the rotating member. The spring surrounds the main shaft and elastically biases between the sliding member and the fixing portion. The hinge assembly is modularized, easy to install, and low in cost.

Abstract: A hinge assembly (100) for joining a cover section (110) to a body section (120) of a foldable electronic device includes a main shaft (1), a cam (2), a follower (3), a first elastic element (4), a control (5), a sleeve (6), a second elastic element (7) and a fixing element (8). The shaft has an outer thread (101) at one end and an engaging portion at an opposite end. The cam includes an end cam surface (212), and an inner thread (211). The follower includes a latching cam surface (312). The control has at least one projection (52) at one end thereof, and engages with the engaging portion. The sleeve is connected with the follower, and rotation of the sleeve is limited by the control. When the control is pushed, the hinge assembly fully opens the cover section from body section. This provides a user with convenient one-handed operation.

Abstract: A hinge assembly (100) includes a rotating cam (10) having an inner screw thread (122) and a first cam surface (14) at one end thereof, a shaft (20) having an outer screw thread (242) engaging with the inner screw thread at one end thereof, a driven cam (30) having a second cam end (342), a sleeve (40) sliding relative to the driven cam, a first elastic element (50), a second elastic element (52), a sliding element (60), a locking element (70), and a button (90). The shaft extends through the rotating cam, the driven cam, the first elastic element, the sleeve, and the sliding element, and the locking element. The other end of the shaft is secured on the locking element. The button is slidably disposed on the locking element, one end of the button resists the sliding element.

Abstract: A hinge assembly (200) includes a shaft (13), a cam (14), a follower (15), a first spring (12), a control member (17), a second spring (16) and a fixing seat (18). The shaft defines an outer screw thread (1320). An inner circumferential wall of the cam defines an inner screw thread (144) is meshed with the outer screw thread of the shaft. The first spring provides an elastic force causing a cam surface of the cam and a latching cam surface of the follower to resist each other. The second spring is positioned between the control member and the follower. The fixing seat has a bottom portion (181) including at least one block and at least one slot adjacent to the at least one block. The at least one block of the control member is received in the at least one receiving groove.

Abstract: A hinge assembly includes a central shaft (20), including an outer screw thread (221); a turning element (30), including a central hole (322) and a holding pin (314), an inner screw thread (323) formed at an inner surface of the central hole; a elastic means (40); a blocking element (50), defining a first through hole (51) and a second through hole (52); and a button (71), including a supporting pin (72). The central shaft extends through the central hole of the turning element, the first elastic element, and the first through hole of the blocking element in that order, the outer screw thread engages with the inner screw thread, and the holding pin of the turning element is received in the second through hole of the blocking element. The present invention enables a foldable electronic device to be opened simply by pressing the button.

Abstract: An exemplary hinge assembly (100) includes a shaft (10), a cam member (14), a resilient member (40), a cam (20), and a torsional member (30). The cam member is fixed relative to the shaft. The resilient member is mounted on one end of the shaft. The cam has a second cam portion (22). The cam is slidably and rotatably movable relative to the shaft. The second cam portion is engaged with the first cam portion urged by the resilient member. The torsional member is configured for providing a torsional force between the cam and the shaft.

Abstract: A hinge assembly (100) includes a shaft (10), a follower (12), a cam (20), a friction-reducing mechanism (30), and an urging means. The shaft includes a securing portion (11) formed thereon. The follower is connected with the shaft. The cam essentially is in the shape of a cylinder, and includes a cam surface (24) and defines a cam hole (22) extending therethrough. The cam hole receives the shaft therethrough. The friction-reducing mechanism is located around the shaft, and includes a rolling means. A first end of the urging means abuts against the shaft, and an opposite second end of the urging means biases the friction-reducing mechanism. The friction-reducing mechanism is disposed between the cam and the urging means. The cam surface of the cam is rotatably and movably engaged with the follower under force of the urging means.

Abstract: A slide mechanism (100) includes a main plate (20), a slide plate (10). The main plate has a post (24) protruding from one surface thereof The slide plate is slidably relative to the main plate, and has a guiding slot (162) defined therein. The post is slidably engaged with the guiding slot. The guiding slot is configured in a manner such that the post slides automatically to a desired position in the guiding slot when the post slides from one end of the guiding slot to the other and reaches a critical point.

Abstract: A hinge mechanism includes a shaft (1), a cam follower (12), a cam (2), an antifriction member (3), a washer (4) and an elastic member (5). The cam follower is fixed relative to the shaft and has a cam follower surface. The cam has a cam surface (24) and a cam hole defined therein. The cam is rotatable relative to the cam follower. The shaft runs through the cam, the washer and the elastic member, in turn. The antifriction member has one end touching the cam and an opposite end touching the washer. The cam surface abuts against the cam follower surface due to the elastic force of the elastic member. As the friction coefficient between the antifriction member and washer is smaller than that between the cam and the washer, the hinge mechanism generates a smaller friction therebetween, so the waste of energy is very small.

Abstract: A hinge assembly (200) includes a retaining member (4), a fixing seat (5), a control member (6), a first spring (7), a follower element (10), a rotating element (20), a second spring (9) and a shaft (30). The first spring provides an elastic force to the control member. The rotating element includes an axis hole having an inner screw thread (4342). The rotating element disposes two protrusions (24). The follower element includes two recesses (15) and two plane portions (16). The second spring provides an elastic force to make the protrusions of the rotating element receive in the recesses of the follower element and resist each other. The shaft defines an outer screw thread (233). The outer screw thread engages with the inner screw thread of the rotating element.