Abstract: A dual-shaft synchronous movement device includes a first shaft and a second shaft, which are synchronously rotatable. The synchronous movement device further includes a first rotor and/or a third rotor disposed on the first shaft and a second rotor and/or a fourth rotor disposed on the second shaft, and an inextensible/non-contractible flexible plate connected between the first (or the third rotor) and the second rotor (or the fourth rotor). When the first shaft drives the first rotor (or the third rotor) to rotate, the inextensible/non-contractible flexible plate pulls the second rotor (or the fourth rotor) to rotate in a direction reverse to a moving direction of the first rotor so as to make the first and second shafts synchronously rotate. The synchronous movement device solves the problem of delay of kinetic energy transmission and the problem of slippage, deflection and untrue operation of the conventional device.

Abstract: A double-shaft type rotary shaft pivotal positioning structure includes an elastic guide assembly and two pivot shafts. The elastic guide assembly includes two containing portions which are outwardly communicated and formed with two opposite elastic arms and two corresponding planed press-contact sides. The pivot shafts are respectively centrally provided with center section portions that are utilized to respectively enter the containing portions of the elastic guide assembly and each of which includes a periphery provided with two center section planed surfaces capable of being pressingly contacted with the press-contact sides of the elastic guide assembly. When the pivot shafts are synchronously pivoted close to a preset positioning angle, the center section planed surfaces of the pivot shafts are capable of rotatably attaching toward the press-contact sides of the elastic guide assembly, thereby enabling the pivot shafts to approach and be positioned at the preset positioning angle.

Abstract: A synchronous movement device of dual-shaft system includes a first shaft and a second shaft, which are assembled with each other and synchronously rotatable. The synchronous movement device further includes a driver disposed on the first shaft and a reactor disposed on the second shaft and a link unit connected between the driver and the reactor. The driver is formed with a driving rail. The reactor is formed with a reacting rail. When the first shaft drives the driver to rotate, the driver pushes the link unit to move along the first and second shafts to forcedly push the reactor to rotate in a direction reverse to the moving direction of the driver. Accordingly, the first and second shafts are synchronously rotated.

Abstract: A dual-shaft synchronous motion device includes a first shaft and a second shaft; a first rotor and a third rotor disposed on the first shaft and turned synchronously; a second rotor and a fourth rotor disposed on the second shaft and turned synchronously; and a tractive member disposed between the first rotor (the third rotor) and the second rotor (the fourth rotor). When the first shaft drives the first and third rotors to turn, the tractive member brings the second rotor to turn reversely relative to the first rotor. The fourth rotor makes the tractive member drive the third rotor so that the first and second shafts are turned synchronously.

Abstract: A planetary type dual-shaft hinge includes a female shaft, a male shaft set including first and second male shafts respectively inserted through the female shaft, and a transmission mechanism including first and second transmission members respectively connected to the first and second male shafts and a link pivotally coupled between the first and second transmission members in such a manner that the pivoting points between the link and the first and second transmission members are disposed at two opposite sides relative to the central axes of the first and second transmission members so that when the user opens the cover member of the flip-up electronic device in which the hinge is used, the first male shaft is turned around the second male shaft to smoothen the movement of the cover member.

Abstract: The present invention relates to a connecting device capable of opening and engaging in dual directions, which includes: a supporter; a corresponding supporter capable of being engaged with the supporter; and two connection bars parallel to each other, each of the connection bars is respectively parallel to the supporter and the corresponding supporter, and two ends of each of the connection bars are respectively pivoted with the supporter and the corresponding supporter thereby allowing the corresponding supporter to be rotated and unfolded towards an end direction of the supporter or to be rotated and unfolded towards an opposite end direction of the supporter so as to form the dual-directional opening operation.

Abstract: A display device is disclosed. The display device includes a hinge module comprising a pair of hinge shafts arranged side by side, a pair of hinge brackets having one ends coupled to the hinge shafts, respectively, and the other ends in which slide slots are formed, a pair of slide brackets coupled to the slide slots, the slide brackets which are horizontally movable along the slide slots, and a pair of bodies coupled to the slide brackets, respectively, such that the display device may be foldable 0˜180 degrees to be folded and unfolded like a book.

Abstract: Disclosed is a gear hinge device employed in a portable apparatus including first and second housings. The gear hinge device connects the first and second housings in such a manner such that the first and second housings can be rotated about first and second hinge axes, respectively. The gear hinge device includes: a first driving unit comprising a first driving cam gear that is rotated about the first hinge axis and a second driving unit comprising a second driving cam gear that is engaged with the first driving cam gear and rotated about the second hinge axis that is parallel to the first hinge axis and a flexible auxiliary gear that is arranged coaxially to the second driving cam gear.

Abstract: A hinge structure includes a first shaft, a second shaft, a pivot base and a position-limiting mechanism. The first and second shafts are pivoted on the pivot base. The position-limiting mechanism includes a first position-limiting portion, a second position-limiting portion and a position-limiting component. The first position-limiting portion is fixed to the first shaft. The second position-limiting portion is fixed to the second shaft. The position-limiting component is slidably disposed on the pivot base and has first and second ends opposite to each other. When the position-limiting component moves to a first position, the first end and the first position-limiting portion interfere with each other to stop the first shaft and the pivot base from rotating relatively. When the position-limiting component moves to a second position, the second end and the second position-limiting portion interfere with each other to stop the second shaft and the pivot base from rotating relatively.

Abstract: A display device is disclosed. The display device includes a hinge module comprising a pair of hinge shafts arranged side by side, a pair of hinge brackets having one ends coupled to the hinge shafts, respectively, and the other ends in which slide slots are formed, a pair of slide brackets coupled to the slide slots, the slide brackets which are horizontally movable along the slide slots, and a pair of bodies coupled to the slide brackets, respectively, such that the display device may be foldable 0˜180 degrees to be folded and unfolded like a book.

Abstract: A planetary type dual-shaft hinge includes a female shaft member, a male shaft set rotatably inserted through the female shaft member, and a transmission mechanism including a first transmission member and a second transmission member respectively affixed to the first shaft and the second shaft, and a link coupled between the first transmission member and the second transmission member. The two pivoting points between the link and the first and second transmission members are respectively deviated from the two connection points between the first and second transmission member and the first and second shaft, so that when the hinge is used in a flip-up electronic apparatus and the cover member of the electronic apparatus is opened from the base member thereof, the first shank can be turned about the second shaft, smoothening the relative movement between the cover member and the base member.

Abstract: A synchronous movement device applied to dual-shaft system includes a first shaft and a second shaft, which are assembled with each other and synchronously rotatable. The synchronous movement device further includes a driver disposed on the first shaft and a reactor disposed on the second shaft and a link unit connected between the driver and the reactor. When the first shaft drives the driver to rotate, the driver pushes the link unit to move along the first and second shafts to forcedly push the reactor to rotate in a direction reverse to the moving direction of the driver. Accordingly, the first and second shafts are synchronously rotated.

Abstract: A dual-shaft pivot device includes a resilient guide assembly composed of a plurality of resilient guide members and first and second pivotal shafts. Each resilient guide member has two accommodation portions at two ends thereof and a connecting groove communicating with the two accommodation portions. One end of the inner wall of each accommodation portion, far away from the connecting groove, has an end protrusion. The first and second pivotal shafts have middle portions which are inserted in the accommodation portions of the resilient guide member. Each middle portion has at least one middle flat surface to get contact with the end protrusion for the middle portion to push the end protrusion during turning to bring resilient deformation of each accommodation portion.

Abstract: A pivot mechanism rotatably coupes a cover to a base of a foldable electronic device. The pivot mechanism includes a connector, a first rotation assembly, and a second rotation assembly. The first rotation assembly is rotatably coupled to the base and fixedly attached to the connector. The second rotation assembly is fixedly coupled to the cover and rotatably coupled to the connector. The first rotation assembly rotates relative to the base and the second rotation assembly remains fixed relative to the connector as the cover is rotated open to a first angle,. The second rotation assembly rotates relative to the connector as the cover is rotated further to a second angle.

Abstract: A substantially rigid defibrillator carrying case having a hinged side, a latch disposed on a latch side opposite the hinged side, and a handle disposed on a handle side disposed between the hinged side and the latch side. The carrying case hinge is constructed for greater structural integrity when the case is open, and to have a flush-mount profile when the case is closed.

Abstract: A synchronous movement device applied to dual-shaft system includes a first shaft and a second shaft, which are assembled with each other and synchronously rotatable. The synchronous movement device further includes a driver disposed on the first shaft and a reactor disposed on the second shaft and a link unit connected between the driver and the reactor. When the first shaft drives the driver to rotate, the driver pushes the link unit to move along the first and second shafts to forcedly push the reactor to rotate in a direction reverse to the moving direction of the driver. Accordingly, the first and second shafts are synchronously rotated.

Abstract: The present invention relates to a connecting device capable of opening and engaging in dual directions, which includes: a supporter; a corresponding supporter capable of being engaged with the supporter; and two connection bars parallel to each other, each of the connection bars is respectively parallel to the supporter and the corresponding supporter, and two ends of each of the connection bars are respectively pivoted with the supporter and the corresponding supporter thereby allowing the corresponding supporter to be rotated and unfolded towards an end direction of the supporter or to be rotated and unfolded towards an opposite end direction of the supporter so as to form the dual-directional opening operation.

Abstract: A hinge apparatus has a first attachment member to be attached to a housing, a second attachment member to be attached to a door; and first and second links, respective basal end portions of the first and the second links rotatably attached to the first attachment member, respective distal end portions of the first and the second links rotatably attached to the second attachment member. The first attachment member, the second attachment member, the first link and the second link constitute a link mechanism. The first attachment member has a base member to be attached to the housing, and a connecting member removably attached to the base member. The basal end portions of the first and the second links are rotatably attached to the connecting member. The connecting member, the second attachment member, the first link and the second link constitute a link mechanism.

Abstract: A planetary type dual-shaft hinge includes a female shaft member, a male shaft set rotatably inserted through the female shaft member, and a transmission mechanism including a first transmission member and a second transmission member respectively affixed to the first shaft and the second shaft, and a link coupled between the first transmission member and the second transmission member. The two pivoting points between the link and the first and second transmission members are respectively deviated from the two connection points between the first and second transmission member and the first and second shaft, so that when the hinge is used in a flip-up electronic apparatus and the cover member of the electronic apparatus is opened from the base member thereof, the first shank can be turned about the second shaft, smoothening the relative movement between the cover member and the base member.

Abstract: The present invention relates to a connecting device capable of opening and engaging in dual directions, which includes: a supporter; a corresponding supporter capable of being engaged with the supporter; and two connection bars parallel to each other, each of the connection bars is respectively parallel to the supporter and the corresponding supporter, and two ends of each of the connection bars are respectively pivoted with the supporter and the corresponding supporter thereby allowing the corresponding supporter to be rotated and unfolded towards an end direction of the supporter or to be rotated and unfolded towards an opposite end direction of the supporter so as to form the dual-directional opening operation.

Abstract: A multiple axis hinge arrangement for a truck hood includes a first hinge arrangement and a second hinge arrangement laterally spaced and mounted at first and second sides, respectively, of a front end of a truck. The first and second hinge arrangements include horizontal hinge elements that support a truck hood for pivotal movement on a horizontal axis relative to a truck frame and include vertical hinge elements that provide vertical pivot axes. A coupling member is provided at each of the first and second hinge arrangements allowing the selected hinge arrangement to be uncoupled from the front end of the truck so the hood is free to pivot on the vertical axis of the coupled arrangement.

Abstract: A hinge comprising two pivoting elements adapted to hingedly join two articles, each pivoting element including attachment means for attaching to an article; wherein when attached to the two articles the hinge is rotatable with respect to the articles.

Abstract: A multi-segment rotary shaft structure includes a driving joint assembly and a driven joint assembly. The driving joint assembly at least includes two opposite joint plates and a middle link plate assembly engaged therebetween. The driven joint assembly is disposed between the opposite joint plates and includes at least two driven plates. Opposite ends of the driven plates are formed with synchronous driving sections drivingly engaged with each other. Inward ends of the opposite joint plates are linked with outward ends of the driven plates. Outward ends of the middle link plate assembly are linked with the inward ends of the driven plates. The driving joint assembly and driven joint assembly are stringed and pivotally connected and combined, whereby the joint plates can be freely rotated around multiple rotational centers.

Abstract: A synchronous folding device includes two opposing folding members and a multi-joint rotary axle structure mounted between the two folding members. The multi-joint rotary axle structure has two ends which can be folded or unfolded synchronously. The multi-joint rotary axle structure includes a driving joint assembly and a driven joint assembly. The driving joint assembly includes two opposing joint plates and a middle link plate. Two ends of the driving joint assembly are respectively connected to the two opposing folding members. Each joint plate of the driving joint assembly can be turned free through plural turning centers so that both ends can be closed or opened synchronously for the folding device to be folded or unfolded accurately.

Abstract: A door hinge for recessed installation between an edge of a door panel and a door jamb has first and second leaf assemblies that each form a cavity and are recessed in the door-panel edge and in the door jamb and a pair of U-section links pivoted centrally together about a center axis and each having a first end and a second end engaged in the cavities of the respective first and second leaf assemblies. The first end of one of the links and the second end of the other link are pivoted about respective vertical axes fixed in the respective leaf assemblies and the second end of the one link and the first end of the other link are pivotal about another respective vertical axis and horizontally shiftable in a respective guide of the respective leaf assemblies.

Abstract: Dual screen display devices are disclosed. The device is able to be a mechanical hinge capable of joining multiple screens to form a single display or a substantially continuous display. The device is also capable of splitting a jointed display into separated screens. In some embodiments, the device comprises detaining mechanisms allowing the device to instantly interchange among several pre-defined angles or positions.

Abstract: In a door hinge for hidden placement between a door frame and a door leaf a first hinge rod is rotatably mounted on a door frame receiving body at one end and at another end is guided rotatably and displaceably in a slot link guide of a door leaf receiving body, a second hinge rod is rotatably mounted on the door leaf receiving body at one end and at another end is guided rotatably and displaceably in a slot link guide of the door frame receiving body, disposed at an angle of at least 45° relative to front surfaces of the door leaf in a closed position, and a depth of the door frame receiving body is less than 80% of a depth of the door leaf receiving body.

Abstract: A hinge including a device bracket, a door bracket, a first arm, a second arm, and a door stop is provided. The device bracket mounts to a device surface. The door bracket mounts to a door surface of a door. The first arm is mounted for rotation about a first pin and a second pin. The second arm is mounted for rotation about a third pin and a fourth pin. The first pin and third pin are mounted to the device bracket, and the second pin and fourth pin are mounted to the door bracket. The first pin is closer to an axis of rotation of the door than the third pin when the door is in a closed position. The door stop is mounted to the second arm and positioned to contact the first arm when the door is opened to a selected angle.

Abstract: A hood connection assembly, sometimes referred to as an articulated hood pivot linkage, for a vehicle is disclosed. The hood connection assembly is an articulating interface between a vehicle chassis member and the vehicle hood. In use, the hood connection assembly provides up to three (3) points of isolation from chassis torsion as well as providing a “virtual axis” type pivoting connection. A “virtual axis” type pivoting connection provides an upwardly and outwardly motion of hood travel.

Abstract: An information handling system converts from a closed position to a tablet position by rotating a lid with a display 360 degrees about a hinge having synchronized and continuous motion. The hinge has first and second axles held distal by a spacer. A synchronizer translates motion of each axle to the other to provide fluid movement of the lid relative to the housing. For instance, first and second cables translate rotational motion with the disposition of a discontinuous figure eight between the first and second axles.

Abstract: In one embodiment, a plasma processing assembly may include an upper process body coupled to a hinge body and a lower process body coupled to a base hinge member. The hinge body can be pivotally engaged with the base hinge member. A self locking latch can be pivotally engaged with the base hinge member. When the hinge body is rotated around the first axis of rotation, the protruding latch engagement member can contact the self locking latch and can rotate the self locking latch around the second axis of rotation opposite to the bias direction. The self locking latch can rotate around the second axis of rotation in the bias direction and can block the hinge body from rotating around the first axis of rotation.

Abstract: Disclosed is a long arm quick release hinge comprised of a hinge cup pivotally connected to a hinge body with a hinge pin via a hinge arm and a link in a four-bar linkage arrangement. The link is a collection of plates with interlocking projections and indentions arranged adjacent to each other and separated by resilient shock absorbing spacers. The hinge body is adjustably connected to a connecting plate with an overlay screw and an adjustment screw.

Abstract: A dual-shaft synchronous movement device and an assembling method thereof. The dual-shaft synchronous movement device includes a first shaft and a second shaft, which are assembled with each other and synchronously rotatable. The invention includes providing an assembling device and arranging on the assembling device a first rotor and a second rotor (or a third rotor and a fourth rotor) between which a drive section is wound; winding the drive section onto the first and second rotors (or the third and fourth rotors) in a tensioned state; and pushing the first and second rotors (or the third and fourth rotors) onto the first and second shafts. Through the first and second rotors (or the third and fourth rotors) and the drive section, when the first shaft is rotated, the second shaft is synchronously rotated.

Abstract: A dual-shaft synchronous motion device includes a first shaft and a second shaft; a first rotor and a third rotor disposed on the first shaft and turned synchronously; a second rotor and a fourth rotor disposed on the second shaft and turned synchronously; and a tractive member disposed between the first rotor (the third rotor) and the second rotor (the fourth rotor). When the first shaft drives the first and third rotors to turn, the tractive member brings the second rotor to turn reversely relative to the first rotor. The fourth rotor makes the tractive member drive the third rotor so that the first and second shafts are turned synchronously.

Abstract: An exemplary electrical device includes a first main body; a second main body; and a rotatable mechanism pivotally connected the first main body and the second main body. The rotatable mechanism includes a first rotation unit and a second rotation unit. The first rotation unit is capable of making the first main body rotate around a second rotation axis in a plane perpendicular to the second rotation axis. The second rotation unit is capable of making the first main body rotate relative to the second main body around a first rotation axis.

Abstract: The present invention provides a foldable flexible display device. A foldable flexible display device according to the present invention includes: first and second plates having a predetermined area; a hinge member for connecting the first plate and the second plate; and a flexible display screen attached to the tops of the first plate and the second plate and the hinge member, in which the hinge member folds the first plate and the second plate and the flexible display screen while folding with smooth curvature. According to this configuration, the operation for folding or unfolding the screen of a flexible display device can be smoothly operated and damage to the display screen can be prevented, resulting in remarkable improvement in reliability of a product.

Abstract: The present invention relates to a pin locking dual shaft hinge, including a connecting support, a first core shaft and a second core shaft parallel to each other, a first engaging cam, a second engaging cam and an insertion pin. The connecting support includes a main body and a first connecting member disposed between an upper and a lower end thereof, the first connecting member is penetrated with a penetrated hole. The first core shaft and the second core shaft are respectively pivoted at the upper and lower end of the main body. The first engaging cam is sleeved and engaged on the first core shaft, the periphery of the first engaging cam is formed with at least a first engaging part. The second engaging cam is sleeved and engaged on the second core shaft, the periphery of second engaging cam is formed with at least a second engaging part.

Abstract: An opening and closing device includes a fixed frame including a shaft receiving part and fixed to a first housing, a movable plate configured to be rotationally movable relative to the fixed frame, a slide plate configured to be slidable relative to the movable plate and fixed to a second housing, multiple arms of the same length provided between the shaft receiving part and the movable plate to have respective one ends received by the shaft receiving part and respective other ends received by the movable plate, and a slide mechanism configured to cause the slide plate to slide relative to the movable plate. The slide plate is caused to slide relative to the movable plate by the slide mechanism and the movable plate rotates relative to the fixed frame with turns of the arms, so that the second housing moves between a closed position and an open position.

Abstract: In one embodiment an electronic device comprises at least one electronic component and a housing comprising a first section to be rotatable about a first hinge pin extending along a first axis extending proximate a first edge, a second section to be rotatable about a second hinge pin extending along a second axis substantially parallel to the first axis, and at least one connecting arm to be coupled to the first hinge pin and the second hinge pin. Other embodiments may be described.

Abstract: A hinge device has a first part and a second part, which are intended to be attached to a door frame and a door, respectively. The first part and the second part are rigidly connected to each other and have each a tubular housing, whose center axis defines a first hinge axis and which accommodates two balls, an axially displaceable locking member arranged axially inwardly of each ball, a compression spring arranged between and cooperating with each ball and the associated locking member, and an eccentric located between the two locking members and cooperating therewith.

Abstract: A plug-in connection multi-segment rotary shaft structure includes a driving joint assembly and a driven joint assembly. The driving joint assembly includes two opposite joint plates and a middle link plate assembly engaged therebetween. The driven joint assembly is disposed between the joint plates and includes two driven plates. Opposite inward ends of the driven plates are formed with synchronous driving sections drivingly engaged with each other. Inward ends of the opposite joint plates are connected with the outward ends of the driven plates. Outward ends of the joint plates are formed with plugs. Outward ends of the middle link plate assembly are connected with the inward ends of the driven plates. The driving joint assembly and driven joint assembly are connected and combined, whereby the joint plates can be freely rotated around multiple rotational centers.

Abstract: Example embodiments disclosed herein relate to a hinge assembly. An example of the hinge assembly includes a pair of active hinges and a pair of passive hinges. The hinge assembly may be utilized in portable computing devices such as notebook computers and personal digital assistants (PDAs).

Abstract: An electronic device that includes a hinge apparatus and the hinge apparatus are described. The hinge apparatus includes n shafts, arranged side by side, wherein n is an integer equal to or greater than 3; and multiple connecting elements for rotatably connecting each two adjacent shafts so as to form a shaft chain. The hinge apparatus can achieve a flexible shaft effect and can place the two portions connected by it in the same plane.

Abstract: A slide cover lifting structure used in an electronic device consisting of a base member and a cover panel is disclosed to include a pair hinges, a pair of sliding rail holders, a pair of bearing members, a pair of plastic slide guides, a pair of sliding rails, a transmission shaft, two gear sets and a pair of gear racks. The gear sets are provided between the sliding rail holders and the bearing members for transmission of applied force. The transmission shaft is mounted in the base member (system end), allowing free utilization of the internal circuit board space of the base member.

Abstract: A motorization device comprises two substantially parallel winding cylinders, at least longitudinal link element-forming winding means, the winding means being suitable for maintaining a predetermined distance between the winding cylinders and being wound around the winding cylinders, and at least two flexible tracks, a flexible track being fixed to each winding cylinder, the flexible tracks being arranged facing one another and having a point of contact, a prestressing force being applied at said point of contact of the flexible tracks under the effect of the winding means. The motorization device comprises elastic means arranged between each winding cylinder and the corresponding flexible track, the elastic means being configured so as to exert a radial compression force on each flexible track, normal to the surface of the flexible track at least at said point of contact.

Abstract: A motorization device comprises two substantially parallel winding cylinders, at least one longitudinal link element to maintain a predetermined distance between the cylinders, and wound around said winding tracks, the link element consequently having a crossover point between the winding cylinders, two flexible tracks fixed to the winding cylinders and arranged facing and in contact with one another at the point of contact, a winding cylinder and flexible track assembly forming a fitting, a prestressing force being applied at the point of contact under the effect of the link element. The flexible tracks have a spiral form configured that the point of contact between the two flexible tracks in spiral form, situated between said winding cylinders, is offset relative to the crossover point, such that a torque dependent on the distance between the point of contact and the crossover point is applied, to provoke the mutual rotation of the fittings.

Abstract: A mechanism including a hinge and movement assembly having a first fastening region, a second fastening region, and a hinge defining an axis of rotation of the second fastening region relative to the first fastening region is provided. The mechanism further comprises an assembly for maintaining a releasable portion of the partition relative to a stationary portion of the partition, the maintenance assembly having at least one frangible connection that can be broken to rotationally free the second fastening region relative to the first fastening region. The hinge and movement assembly includes relative movement means for the second fastening region relative to the first fastening region at least in a direction parallel to the axis of rotation.

Abstract: A hinge structure is provided. The hinge structure includes a fixing base, a pivot unit and a supporting element. The pivot unit includes a shaft, wherein the shaft passes through the fixing base, and the shaft is moved in a predetermined direction between a first shaft position and a second shaft position relative to the fixing base, and the predetermined direction is perpendicular to an extending direction of the shaft. The supporting element includes a first connection portion and a second connection portion, wherein the first connection portion and the second connection portion are respectively located at two ends of the supporting element, and the second connection portion pivots on the shaft.

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 door hinge is provided for a hidden placement between a door leaf and door frame. The door hinge has two recess elements that are insertable into recesses in the door frame and in the narrow side of the door leaf and two hinge brackets that are connected in articulating fashion. Each of the recess elements also has two guide elements that accommodate the ends of the hinge brackets. The guide elements each have a guide section with two sliding guides and two rotary seats. An end of a hinge bracket is secured in only one respective sliding guide and rotary seat, where the other sliding guide and the other rotary seat remain correspondingly unoccupied.