A portable electronic device including a first body, a second body, and a hinge mechanism is provided. The second body is connected to the first body through the hinge mechanism, and the hinge mechanism has a basis axis located at the first body and a rotation axis located at a lower end of the second body. When the second body rotates with respect to the first body, the rotation axis slides along an arc shaped path with respect to the basis axis to increase or decrease a distance between the rotation axis and the basis axis and increase or decrease a distance between the lower end of the second body and a back end of the first body.

A hinge structure includes a main support including a sliding groove disposed therein; a limit support rotationally connected to the main support via a straight shaft disposed in the sliding groove, and a limit groove is disposed at one side of the limit support; a sub support connected to the limit support via a crank shaft, wherein the sub support is sleeved on the crank shaft, a crank sliding block is disposed at one end of the crank shaft and in the limit groove; and a shaft sleeve; wherein when the main support rotates relative to the sub support, the straight shaft slides in the sliding groove and the crank sliding block slides in the limit groove. A folding mechanism and a mobile terminal are also provided.

A door keeper, for keeping a door opening angle of a door within a predetermined angle, includes a hinge bracket attached to a support structure; a keeper plate having a bracket side end portion pivotally mounted to the hinge bracket, a door side end portion, and a keeper guide slot having a door side slot end portion disposed proximate to the door side end portion of the keeper plate, the keeper guide slot extending from the door side slot end portion to an opposite slot end portion disposed at a location between the bracket side end portion and the door side end portion of the keeper plate; and a keeper member movably disposed in the keeper guide slot and fixedly attached to a lower part of the door. An opening motion of the door stops when the door side slot end portion engages the keeper member.

A door keeper, for keeping a door opening angle of a door within a predetermined angle, includes a hinge bracket attached to a support structure; a keeper plate having a bracket side end portion pivotally mounted to the hinge bracket, a door side end portion, and a keeper guide slot having a door side slot end portion disposed proximate to the door side end portion of the keeper plate, the keeper guide slot extending from the door side slot end portion to an opposite slot end portion disposed at a location between the bracket side end portion and the door side end portion of the keeper plate; and a keeper member movably disposed in the keeper guide slot and fixedly attached to a lower part of the door. An opening motion of the door stops when the door side slot end portion engages the keeper member.

A hinge includes: a base seat that includes a rack extending in a front-back direction; a moving platform that is movable on the base seat along the front-back direction; and a shaft unit that includes a rotating shaft rotatably extending through the moving platform in a left-right direction, a main gear member rotatably extending through the moving platform, co-movable with the moving platform, and meshed with the rack to constitute a rack and pinion system, and a first bevel gear piece fixedly sleeved on the rotating shaft, and meshed with the main gear member such that rotation of the rotating shaft results in collective linear front-back motion of the shaft unit and the moving platform relative to the base seat.

The present invention relates to a door system for a refrigeration device and a refrigeration device with such a door system.

A door hinge apparatus of a vehicle may include a slide unit including a slide body and a main slider where the slide body is provided on one side of a vehicle body corresponding to an end portion of a door in the vehicle and the main slider is movable in a width direction of the vehicle with respect to the slide body, and a door hinge bracket engaged with the end portion of the door and operably coupled to the main slider.

A door hinge apparatus of a vehicle may include a slide unit including a slide body and a main slider where the slide body is provided on one side of a vehicle body corresponding to an end portion of a door in the vehicle and the main slider is movable in a width direction of the vehicle with respect to the slide body, and a door hinge bracket engaged with the end portion of the door and operably coupled to the main slider.

The present invention provides a refrigerator, comprising a cabinet, a door and a hinge body, wherein a positioning shaft and a guiding shaft are provided on the hinge body, and a positioning groove and a guiding groove are provided on the door; the door of the refrigerator according to the present invention may be moved by a distance in a direction away from a pivoting side when being opened, thereby avoiding inconvenience of opening the door due to the protrusion of the side wall of the door.

The present invention provides a refrigerator, comprising a cabinet, a door and a hinge body, wherein a positioning shaft and a guiding shaft are provided on the hinge body, and a positioning groove and a guiding groove are provided on the door; the door of the refrigerator according to the present invention may be moved by a distance in a direction away from a pivoting side when being opened, thereby avoiding inconvenience of opening the door due to the protrusion of the side wall of the door.