Abstract: A movable member (not shown) non-turnably connected to a second hinge member is arranged on the turning axial line of first and second hinge members such that the movable member is turnable and movable in the direction of the turning axial line. The movable member is biased toward the first hinge member by a coiled spring (not shown). A confronting surface of the first hinge member with respect to the movable member is provided with a pair of raised wall surfaces 11d, 11d extending in the direction of the turning axial line and end face cams 41 arranged between the pair of raised wall parts 11d, 11d, respectively. A confronting surface of the movable member with respect to the first hinge member is provided with a pair of abutment arm parts 42a for converting the biasing force of the coiled spring to a turn biasing force for turning the movable member by being press-contacted with the end face cam 41. A recess 11e is formed in a lower part of the raised wall surface 11d.

Abstract: A hinge for vehicle doors includes: a first part fixable to a vehicle door and including an essentially vertical pin; a second part fixable to a frame of the vehicle and including an essentially cylindrical and vertical first cavity that houses the vertical pin; and a retaining device that retains infinite angular positions between the first and second parts. The retaining device includes: a sleeve surrounding the pin in the first cavity and an engagement member arranged between the pin and the sleeve. The engagement member couples the sleeve to the pin in any angular rest position of the hinge and automatically decouples the sleeve from the pin during relative rotation between the first and second parts. An interruption of the relative rotation between the first and second parts causes the engagement member to automatically couple the sleeve to the pin.

Abstract: An exemplary interference assembly of a hinge includes a first element and a second element. The first element defines a through hole in a center, and a first depression portion in the side. A first raised portion protrudes from the side of the first element. The first depression portion and the first raised portion are opposite each other across the through hole. The second element defines a fixing hole in a center, and a second depression portion in a side facing the side of the first element for engaging with the first raised portion. A second raised portion protrudes from the side of the second element for engaging with the first depression portion. The second depression portion and the second raised portion are opposite each other across the fixing hole.

Abstract: A hinge for an electronic device, such as mobile radio terminal, is a two-part hinge with a top tube on a top half of the device, a bottom tube on a bottom half of the device, and a hinge assembly in the top tube and the bottom tube. The top tube and the bottom tube together extend across substantially all of a hinge connection width, and may extend across substantially all of a device width of the electronic device. The hinge assembly extends across at least most of the hinge connection width, such as extending across at least 90% of the hinge connection width. The hinge assembly includes a flexible film ribbon connector for making electrical connections between the top part and the bottom part of the electronic device. The flexible film is wrapped around a shaft of the hinge assembly.

Abstract: A damping hinge device includes a hinge and a damper. The damper is arranged coaxially with the hinge and has a damping shell, a damping body, a plurality of rotating slices, a plurality of limiting slices, an outer gasket and a pushing body. The damping shell has a cylinder-shaped shell body, a top cover is formed in the top of the shell body. The damping body is accepted in the damping shell and has a basic portion and a column portion extending from one end of the basic portion. The rotating slices are accepted in the damping shell and fixed around the column portion. The limiting slices are fixed in the damping shell and rotatably around the column portion of the damping body, the limiting pieces and the rotating pieces are staggeredly arranged. Damping oil is filled between the adjacent limiting slices and the rotating slices. The outer gasket is disposed on the basic portion of the damping body and pressed against the shell body.

Abstract: An exemplary swivel hinge assembly (10) includes a bracket (12), a hinge mechanism (14), a hinge follower mechanism (16), and a swivel mechanism (18). The hinge mechanism (14) and the hinge follower mechanism (16) are configured to provide the swivel hinge assembly (10) with rotation about a first rotational axis. The hinge mechanism (14) includes a first pivot shaft (154), a first connecting member (142), a positioning ring (146), a ring follower (144), an elastic member (148), a cam (150), and a cam follower (152). The hinge follower mechanism (16) includes a second connecting member (162) and a second pivot shaft (166). The swivel mechanism (18) is connected to the bracket (12) and configured to provide the swivel hinge assembly (10) with rotation about a second rotational axis.

Abstract: A hinge apparatus includes a hinge assembly (30) and an enclosure (40). The hinge assembly includes a sleeve (31). The enclosure forms two elastic portions (46) therein. The hinge assembly is slidably received in the enclosure, and the sleeve is clamped between the elastic portions. The enclosure defines an opening (42) configured for exposing the hinge assembly from the enclosure.

Abstract: The present invention is directed to an automatic hinge module for a cellular phone, which is capable of automatically opening the cellular phone in a one-touch manner. The automatic hinge module of the present invention automatically opens a cellular phone by simply pressing a button. When the button is pressed, a housing coupled to a folder portion of the cellular phone is rotated by an elastic restoring force of a compressed torsion spring, thereby opening the cellular phone.

Abstract: An open-and-close hinge device comprise a shaft member having a first end and a second end; a fixture securely attached to the first end of the shaft member, and including an actuating member with a push-bottom moveably toward the second of the shaft member when triggered; an initiating cam rotationally assembled to the shaft member and next to the fixture, a locking key arranged between the initiating cam and fixture preventing the initiating cam from rotating against the fixture, the initiating cam having a first cam surface toward the second end; a follower rotationally and slidably attached to the shaft, and having a second cam surface biasing against toward the first cam surface of the initiating cam, and a third cam surface toward the second end of the shaft member; a slider cam slidably assembled to the shaft member and having a forth cam surface biasing against toward the third cam surface of the follower; a first compression spring interposed resiliently between the slider cam and the second end of s

Abstract: An opening and closing device which includes a roughly cylindrical stator, a concavo-convex stator cam provided at an end of the stator, a ring-like rotor rotatably disposed relative to the stator, a rotor cam opposedly protruding from an inner periphery or outer periphery of the rotor, and a spring pushing the rotor against the stator. The rotor cam slides on the concavo-convex stator cam during the opening and closing operations. In this structure, the opening and closing device is openable roughly up to 180°, and a force in the opening direction is applied to a movable housing even when the movable housing is opened not less than 165°. Accordingly, this opening and closing device eliminates wobbling in the opening and closing direction, and ensures reliable opening and closing operations and retention at a predetermined angle.

Abstract: A counterbalance assembly for an appliance hinge includes a base including first and second spaced-apart side walls and a transverse face wall. The base includes: (i) a channel located between the first and second side walls; and, (ii) a notch comprising first and second notch portions respectively located in said first and second side walls. A rotating cam is supported on the base. The cam includes: (i) a camshaft that extends between the side walls and that is adapted for rotation about an axis of rotation, with a first end of the camshaft located in the first notch portion and a second end of the camshaft located in the second notch portion; and, (ii) a lobe that projects from the camshaft. The hinge assembly includes a biasing spring that comprising an inner end engaged with the base and an outer end spaced from the base. The outer end of said spring is located outside the channel.

Abstract: A multi-staged hinge assembly and a portable electrical device comprising the multi-staged hinge assembly are provided. The multi-staged hinge assembly utilizes a spindle with a non-circular cross-section and the relative movement resulting from the movable components disposed on the spindle, such that one of the body portions of the portable electrical device automatically tilts in an angle after the body portions slides with each other. The user could further adjust the angle to meet various use conditions.

Abstract: A hinge apparatus includes a hinge and a damper and defines an axis direction. The damper includes a fixing housing defining an accepting hole therethrough along the axis direction, a rotating nut accepted in the accepting hole and defining an axis hole therethrough, a damping body accepted in the accepting hole and passing through the axis hole, two gaskets located over and under the rotating nut respectively, and a pushing body capable of pushing the damping body to rotate. Two rotating grooves are opened in a sidewall of the axis hole and extending helically along axis direction. Two sliding blocks are arranged on an outer surface of the damping body and extending helically along the axis direction, the sliding block engaging with the rotating groove. Damping oil is filled between the gaskets, the fixing housing and the damping body.

Abstract: A hinge apparatus comprises a rotation body and a fixed body. The rotation body includes a frame which has a side portion orthogonal to a rotation axis and having a first through hole and a cut portion, and a longer side portion having an extending portion and extending along the rotation axis. The extending portion is engaged with the cut portion and has a protruding portion protruding outwardly of the side portion. The fixed body includes: a bracket having first and second side portions, a superimposed portion extending from the second side portion to be overlapped with the first side portion, and an opening passing through the first side portion and the superimposed portion; and a stud inserted through the opening and rotatably securing the frame to the bracket. The protruding portion is contacted with the superimposed portion at a predetermined angle to regulate the rotation of the rotation body.

Abstract: A hinge assembly includes a shaft, a main body drive member, a follower, and a resilient member. The main body drive member, the follower, and the resilient member are mounted with the shaft in turn. One end of the main body drive member has a cam. One end of the follower has a cam engaging with the cam of the main body drive member. The resilient member causes the cam of the follower to resist the cam of the main body drive member due to the decompression of the resilient member, and when the follower is manually rotated relative to the main body drive member about an angle, the follower is automatically rotated relative to the main body drive member due to the decompression of the resilient member.

Abstract: An opening and closing mechanism includes a fixed member which has a fixed cam on its side face; a movable member which has a movable cam on an opposing face to the fixed cam, and which is rotatably disposed relative to the fixed member; a case housing the fixed member and the movable member; and a spring applying a force toward the fixed member to the movable member. The movable member has a recess at its radial center, and the first end of the spring is inserted in this recess.

Abstract: A damping hinge apparatus includes a hinge and a damper. The damper has a damping shell, a damping cover, a damping body, an outer gasket and a rotating body. The damping cover is fixed in the damping shell and has a center hole defined, an inner wall of the center hole defines a plurality of loop-shaped groove perpendicular to the center hole and parallel each other. The damping body has a column portion received in the center hole, the column portion protrudes outward to form a plurality of rotating plates perpendicular to the column portion and parallel each other. The rotating plates engage the corresponding loop-shaped grooves. A bottom of the column portion connects a connecting portion located beneath the damping cover. The outer gasket is arranged around the connecting portion and against an inner side of the damping shell. Damping oil is filled between the outer gasket, the damping shell and the damping body.

Abstract: A hinge is mounted between a cover and a base of an electronic device. A lid covers the hinge and is attached securely to the base. The hinge has a cam wing, a sleeve, a rotating shaft and a pin. The rotating shaft is mounted slidably in the sleeve. The pin is mounted slidably and transversely through the sleeve, is attached securely to the rotating shaft and slides along the outer edge of the cam wing. When the cover is pivoted to a certain angle, the pin slide at part of the cam wing having larger diameter to gradually lift up the cover so the cover is selectively distant away from the lid. Therefore, the shape of the electronic device does not need to be disfigured and the cover still does not bump against the lid.

Abstract: A hinge assembly includes a shaft (12), a follower (16), a cam (18), and an urging means. The shaft has a screw portion (122) defined thereon. The follower has a first cam surface (164) formed on one end surface thereof. The cam has a second cam surface (184) formed on one end surface opposite to the follower. The cam has a screw hole (182) defined therethrough. The screw hole engages with the screw portion of the shaft. The urging means is configured for providing an urging force which moves the follower along the shaft and makes the first cam surface rotatably engage with the second cam surface of the cam.

Abstract: A hinge mechanism comprises a follower, a cam and a first spring. The first spring is spiral, one end of the first spring is mounted to the follower, another end of the first spring is mounted to the cam. The cam rotates relative to the follower about a rotating axis, the first spring is compressed to accumulate elastic force, until the line connecting two ends of the first spring is parallel to the rotating axis where the first spring is mostly compressed to accumulate maximum of the elastic force and the hinge mechanism is in an intermediate state. Once the cam is rotated over the intermediate state, the first spring is expanded under previously accumulated elastic force, which drive the cam continuously rotated relative to the follower.

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: A multi-staged hinge assembly and a portable electrical device comprising the multi-staged hinge assembly are provided. The multi-staged hinge assembly utilizes a non-circular spindle to associate with a plurality of movable elements disposed thereon. One of the body portions of the portable electrical device automatically tilts at an angle after the body portion slides by the multi-staged hinge assembly. The user could further adjust the angle to meet the demands of various situations.

Abstract: A rotary hinge module with a hinge holder having a housing with a receiving space, a first elastic member and a cam member accommodated in the receiving space of the hinge holder, and a rotary shaft vertically movably provided in the receiving space, the rotary shaft passing through the first elastic member, the cam member, and the receiving space. The cam member and the receiving space to be rotatable, and the rotary shaft has a rotating cam which contacts and corresponds to the cam member. The rotary hinge module is applied to a folder type mobile communication terminal.

Abstract: A sliding member held by a movable case is interposed between the movable case and a stopper plate. During opening and closing operations, the movable case does not wear because the stopper plate and the sliding member slidably contact.

Abstract: A motion assist hinge mechanism includes a first and second hinge part mounted to the tailgate and vehicle body, respectively. The first hinge part includes a first cam having a sloped engagement surface engaged with a sloped engagement surface of a second cam of the second hinge part, under the bias of a resilient member, for moving axially along a pivot axis. The second cam is fixed to the vehicle body against pivotal movement relative to the pivot axis. When the tailgate is moved from a lowered, open position towards a raised, closed position, the resilient member translates a torque assisting force to the tailgate. The surface of the second cam may also include a detent that mates with the surface of the first cam to lock the tailgate at an angle.

Abstract: A hinge mechanism includes a shaft (1), a cam (2), a housing (3), an arresting member (6), a cam follower (4), and an elastic member (5). The housing has an open housing end (30), and an opposite partially open housing end (31) including a transverse wall (35). The cam, the cam follower, the elastic member and the arresting member surround the shaft in turn. The cam follower and the elastic member are received in the housing. The cam is partly received in the housing. The transverse wall of the partially open housing end of the housing prevents the cam from sliding further into the housing. The arresting member is disposed adjacent to the open housing end allowing the arresting member sliding into the housing. The cam is rotatable relative to the shaft and non-rotatable relative to the housing, and the cam follower is non-rotatable relative to the shaft.

Abstract: Embodiments of the invention provide a hinge system and method for use with an electrical enclosure. The hinge system can include a first mounting plate having a bushing and a second mounting plate having an aperture. The hinge system can include a pin having a first portion received by the bushing and a second portion selectively received by the aperture. The hinge system can include a cam lever, which can extend from the first mounting plate at an angle. The cam lever can be moveable between a first position to retract the pin from the aperture and a second position to lock the pin in the aperture. The cam lever can be operable in a substantially single plane of motion.

Abstract: A hinge apparatus to facilitate equipment position adjustment is disclosed. One embodiment of a system includes, a hinge apparatus having a through-hole, a rotate-able portion and a body portion. The system further includes, equipment having a first portion coupled to the rotate-able portion of the hinge apparatus, a second portion coupled to the body portion of the hinge apparatus, and an electrical wire that facilitates function of the equipment. The electrical wire is disposed in the hinge extending through the through-hole. The hinge apparatus is operatively configured such that the electrical wire remains intact during when the rotate-able portion of the hinge rotates.

Abstract: A hinge-type cover opening/closing device is designed to smoothly open and close a cover by preventing sudden rotation of the cover. The hinge-type cover opening/closing device for a mobile device includes a pair of hinge shafts, a pair of guide members that are fixedly installed on the hinge shafts, spaced apart from each other by a predetermined distance in a length direction of the hinge shaft, and that enable the hinge shafts to rotate about each other, and one or more cam actuating units that are installed on the hinge shafts, spaced apart from each other by a predetermined distance in the length direction, and that enable the hinge shafts to rotate about each other within a predetermined angle range.

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 hinge assembly comprising a movable member 5 and a fixed member 6 rotatably connected to each other and a coiled spring (not shown) biasing the movable member 5 toward the fixed member 6. A receiving recess 11 is formed in an opposing surface 5b of the movable member 5 facing the fixed member 6. A spherical body 8 is received in the receiving recess 11 such that the spherical body 8 is movable in a circumferential direction of the movable member 5. A first cam portion 13a is formed in an opposing surface of the fixed member 6 facing the movable member 5. Rotation of the movable member 5 in a direction of an arrow causes the cam portion 13a to be abutted against the spherical body 8. The cam portion 13a converts a biasing force of the coiled spring into a rotational biasing force. The rotational biasing force causes the spherical body 8 to be rapidly abutted against a first hitting portion 11a of the receiving recess 11 and thereby to generate a clicking sound.

Abstract: A hinge device for a portable terminal including a first housing, a second housing foldably coupled to the first housing is disclosed. The hinge device causes the first housing and the second housing to be rotatably coupled in such a manner that both housings are either rotated away from each other, or both housings are rotated close to each other. The hinge device includes a hinge shaft fixed to one of the first housing or the second housing. The hinge shaft has a first cam surface on one surface. A hinge cam is movably coupled on the other housing of the first housing and the second housing and has a second cam surface opposite to the first cam surface. An elastic member provides an elastic force in such a way as to cause the second cam surface to contact the first cam surface. The first cam surface has a first peak portion, and the second cam surface has a stopper groove.

Abstract: A hinge assembly (100) includes a cam (13), a follower (14), a first spring (12), a press rod (17), a control member (18) and a second spring (16). The cam has a cam surface. The follower has a latching cam surface engaging with the cam surface. The first spring provides an elastic force causing the cam surface of the cam and the latching cam surface of the follower to abut each other. The press rod includes a threaded portion (173). The control member threadedly engages with the threaded portion of the press rod. The second spring provides an elastic force to return the control member. When the press rod is pushed, the control member rotates to cause the follower to rotate whereby the cam surface of the cam rotates relative to the latching cam surface of the follower.

Abstract: A hinge assembly includes a cam (13), a follower (14), a first spring (12), a control member (17) and a second spring (16). The cam has a first cam surface (135) and a second cam surface (136). The follower has a third cam surface (141) engaging with the first cam surface. The first spring provides an elastic force causing the cam surface of the cam and the third cam surface of the follower to resist each other. The control member has a fourth cam surface engaging with the second cam surface of the cam. The second spring is positioned between the control member and the follower. The control member is movable to push the cam to rotate to realize the first cam surface of the cam to rotate relative to the third cam surface of the follower.

Abstract: A hinge assembly (100) includes a cam (13), a follower (14), a first spring (12), a control member (18) and a second spring (16). The cam has a cam surface. The follower has a latching cam surface engaging with the cam surface. The first spring provides an elastic force causing the cam surface of the cam and the latching cam surface of the follower to resist each other. The control member slidably resists the follower. The second spring provides an elastic force to return the control member. The control member is movable to push the follower to rotate to realize the cam surface of the cam to rotate relative to the latching cam surface of the follower.

Abstract: A hinge construction for a mobile apparatus that includes two hingedly connected to body parts includes an actuator assembly that is located in one of the body parts and a connection rod that transmits the torque generated by the actuator assembly to the other body part.

Abstract: A hinge for a clamshell-type phone includes first and second hinge sections with cooperative anti-skewing features to prevent skewing of the hinge in the open and/or closed positions. The first hinge section includes at least one anti-skew tab extending normal to the pivot axis of the hinge and a second hinge section includes at least one U-shaped anti-skew member to engage the anti-skew tab on the first hinge section in an open or closed position.

Abstract: A hinge assembly (10) includes a shaft (20), a follower (22), a cam (30), a washer (50), a rolling means, and an urging means. The shaft has a securing portion (21) formed at one end thereof. The follower connects with the shaft. The cam essentially is in the shape of a cylinder, and includes a cam surface (32) and defines a cam hole (31) extending therethrough. The cam hole receives the shaft therethrough. The washer defines a center hole (52), and is located around the shaft. The rolling means is disposed between the washer and the cam. One end of the urging means abuts the shaft, and an opposite end of the urging means biases the washer. The cam surface of the cam is rotatably and movably engaged with the follower under force of the urging means.

Abstract: An exemplary hinge assembly includes a shaft, a cam, a cam follower, a first elastic member, a second elastic member, a first sleeve, a second sleeve. The cam and the cam follower are sleeved on the shaft. The first elastic member is sleeved on the shaft, and configured for producing an elastic force along the shaft. The first sleeve is sleeved on the shaft, and non-rotatably connected to the cam follower. The second sleeve is sleeved on the shaft, and non-rotatably connected to the cam. The second elastic member is sleeved on the shaft, and configured for producing an elastic force for driving the first sleeve to rotate relative to the second sleeve. The controlling member resists one of the cam and cam follower, and capable of driving the cam away from the cam follower.

Abstract: It is an object of the present invention to provide an opening/closing device which can be produced simple in construction and reduce the surface pressure of its cam portions, and a mobile phone which can be reduced in cost and sufficiently reliable in the hinged members by using the opening/closing device.

Abstract: The present invention provides as an object a novel hinge device which is extremely valuable as a commercial product and an electronic instrument using the hinge device.

Abstract: An exemplary hinge assembly includes a rotatable shaft, a rotatable stand, a fixed stand, a restricting member, a cam, and a fastening member. The rotatable stand and the restricting member 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. The restricting member has a first restricting portion, the cam having a second restricting portion, the first restricting portion and the second restricting portion cooperatively define a rotating angle range between the rotatable stand and the fixed stand.

Abstract: A hinge (200) is provided in connection with a mobile phone. The hinge includes a shaft (21), a cam (22), a sleeve (25), a torsion spring (24) and a compression spring (23). The shaft includes a first end with two rotatable blocks (211) formed thereon and a second opposite end. The cam includes a first cam end having a flat surface (2230), an intermediate portion (221), a second cam end. The cam surrounds the shaft with the rotatable blocks abutting against the flat surface and being rotatable relative to the cam. The sleeve includes a first end engaged with the second cam end of the cam, and a second end abutting the second end of the shaft. The torsion spring has an inner finger (242) coupled to the shaft, and an outer finger (241) coupled to the sleeve. The compression spring surrounds the intermediate portion of the cam.

Abstract: A cam device includes a first member including a recessed first engaging portion on an inner section, a recessed second engaging portion on an outer section, and recessed third and fourth engaging portions extending from the inner section to the outer section. Further, a second member includes a ridged first engaging portion on an inner section, a ridged second engaging portion on an outer section, and ridged third and fourth engaging portions extending from the inner section to the outer section. When the ridged first and second engaging portions are partially disposed in the recessed first and second engaging portions respectively, one contacted area between the ridged third engaging portion and the recessed third engaging portion plus another contacted area between the ridged fourth engaging portion and the recessed fourth engaging portion preclude the cam device from suffering an increased pressure.

Abstract: A hinge includes a housing. A sliding cam slideably received in the housing defines concave portions and an axial hole. A rotatable cam mating with the sliding cam has a base portion extending downward to form pushing portions disposed in the concave portions. The base portion defines an accommodating hole. A spring is slideably received in the housing. One end of the spring is fixed on the sliding cam and the other end of the spring is fixed at an end of the housing. A shaft received in the housing runs through the axial hole and the spring. An end of the shaft is received in the accommodating hole, and the other end of the shaft passes through the end of the housing. A first stop has a bottom surface whose part extends downward to form a blocking portion, and the rest part of the bottom surface is defined as a revolving platform. A second stop engaging with the rotatable cam has a top surface protruding upward to form a pushing block rotatablely disposed on the revolving platform.

Abstract: A cam used in a hinge that is connected to an electronic device such as a notebook computer includes a first face and an axially spaced second face, a pivot hole axially extending through the first and second faces, the pivot hole comprised of a pair of substantially planar surfaces and a pair of substantially arcuate surfaces, and a block positioned at a corner defined between one planar surface and one arcuate surface. When a pintle of the hinge, which is used for pivotally connecting the electronic device and which includes a pair of planar surfaces and a pair of arcuate surfaces, is installed through the pivot hole of the cam, the first and second edges of each block are in contact with pintle and such that fit of the pintle in the pivot hole is tight at each corner.

Abstract: The present invention is a hinge device installed between a first member 1 and a second member 2, which are folding opening/closing members; including: a first installation body 3 having a cam 4 and pivots together with the first member 1; a tubular second installation body 6 which pivots together with the second member 2; a cam engaging member 5 which is engaged with the cam 4; and a counter-contraction spring 7 which pressingly biases the cam engaging member 5, the first installation body 3 is arranged within the tubular second installation body 6 in a rotatable and slidable manner; the second installation body 6 includes an opening 8 having a slit 9, and the opening 8 is expandable by provision of the slit 9; and when the counter-contraction spring 7 is installed, under the condition that the expandable opening 8 is expanded from an initial diameter and the counter-contraction spring 7 is then installed, the counter-contraction spring 7 is locked in the opening 8 in a non-disengeable manner at the position

Abstract: A hinge assembly (200) includes a button (3), a retaining member (4), a fixing seat (5), a control member (6), a first spring (7), a follower (10), a cam (30), 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 a cam hole having an inner screw thread (342). 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: Two-shaft hinge mechanism components enabling harness wiring are provided to realize durability, reduction in size and weight and a mechanism to restrict rotation, in cellular phones, notebook computers and remote controllers required to have a smaller size, less weight and new functions. Rotation shaft and opening/closing shaft are inserted into coil spring, concave and convex cams, and a caulking component, to assemble a rotation shaft torque unit and an opening/closing torque unit. The units are attached to a hinge housing to constitute the two-shaft hinge. The opening/closing torque unit is disposed either on the left or right side of the hinge housing. A pipe-like shaft with a hollow is employed as rotation shaft, whereby harness wiring is provided easily.

Abstract: A hinge apparatus for a cover of an image forming apparatus has a hinge body with supporting brackets, movably inserted into a coupling hole positioned in a main body of the image forming apparatus, a hinge cam connected to the cover and pivotably connected to the supporting brackets, and a pressure device disposed at the hinge body to press the hinge cam. Accordingly, the hinge apparatus can be implemented with a simple and easy assembly operation, since it is not a complicated structural connection among the component parts of the hinge apparatus.