The present invention discloses a method for automatically detecting door or window faults, comprising the following steps: mounting a displacement sensor at at least one monitoring position of the door or window frame and leaf and/or door or window hardware to monitor a relative position change of the door or window frame and leaf and/or relative displacement of the hardware at said at least one monitoring position; and connecting the displacement sensor to a controller which judges whether the relative position change of the door or window frame and leaf and/or relative displacement of the hardware at said at least one monitoring position exceeds a displacement threshold, and thereby perform combined judgment for door or window faults. The present invention further discloses a mechanism for automatically detecting door or window faults. The present invention can automatically detect possible faults occurring during use of the door or window, and thereby eliminate hidden risks endangering the user and other persons' personal safety, and exhibit important social significance.

The present invention discloses a method for automatically detecting door or window faults, comprising the following steps: mounting a displacement sensor at at least one monitoring position of the door or window frame and leaf and/or door or window hardware to monitor a relative position change of the door or window frame and leaf and/or relative displacement of the hardware at said at least one monitoring position; and connecting the displacement sensor to a controller which judges whether the relative position change of the door or window frame and leaf and/or relative displacement of the hardware at said at least one monitoring position exceeds a displacement threshold, and thereby perform combined judgment for door or window faults. The present invention further discloses a mechanism for automatically detecting door or window faults. The present invention can automatically detect possible faults occurring during use of the door or window, and thereby eliminate hidden risks endangering the user and other persons' personal safety, and exhibit important social significance.

Methods and systems are described for determining operation of an openable barrier and direction of movement of a person through an opening controlled by the barrier. A method includes detecting with a hinge sensor a closed position for the barrier, the hinge sensor being mounted to a hinge of the barrier, determining with the hinge sensor when the barrier changes position from the closed position to an open position, detecting with at least one motion sensor motion of an object in proximity to the opening, and determining a direction of movement of the object through the opening based on whether the motion is detected before or after detecting the change in position of the barrier.

A door alignment system includes a first alignment member secured to one of a first door or a structure connected to the first door, and a second alignment member secured to the other of the first door or the structure. The first alignment member is configured to couple to the second alignment member when the first door is in a closed position relative to the structure in order to prevent the first door from binding in relation to the structure. The first alignment member is configured to be separated from the second alignment member when the first door is in an open position relative to the structure.

Embodiments of the present disclosure provide a sliding door unit and an electronic device thereof. The sliding door unit includes a sliding door, setting on a base through a sliding component, and configured to slide relative to the base when receiving an external force; a first movement mechanism group placed at a first end of the sliding door; and a second movement mechanism group placed at a second end of the sliding door, and the first and second ends being two opposite ends. The first movement mechanism group and the second movement mechanism group move at a matching pace relative to the sliding door on the base when the sliding door is moved by the external force.

A hinge device includes: a first and a second hinge components having a common reference axis; and a power generating device. The first and the second hinge components are engaged with each other, so as to be rotatable about the reference axis relative to each other, and so that one of the first and the second hinge components supports the other. The power generating device includes a housing and an input shaft, and generates electric power by rotation of the input shaft. The housing of the power generating device is fixed to the first hinge component, so that the input shaft of the power generating device is positioned on the reference axis. The input shaft of the power generating device is restrained to the second hinge component with respect to the direction of rotation about the reference axis, so that the input shaft of the power generating device rotates by as much as rotation of the second hinge component when the second hinge component rotates about the reference axis.

A hinge device includes: a first and a second hinge components having a common reference axis; and a power generating device. The first and the second hinge components are engaged with each other, so as to be rotatable about the reference axis relative to each other, and so that one of the first and the second hinge components supports the other. The power generating device includes a housing and an input shaft, and generates electric power by rotation of the input shaft. The housing of the power generating device is fixed to the first hinge component, so that the input shaft of the power generating device is positioned on the reference axis. The input shaft of the power generating device is restrained to the second hinge component with respect to the direction of rotation about the reference axis, so that the input shaft of the power generating device rotates by as much as rotation of the second hinge component when the second hinge component rotates about the reference axis.

A refrigerator door assembly includes a refrigerator door having a recess. An alignment mechanism includes a plate and a door hinge. The plate is fixedly attached to the door hinge and positioned at least partially within the recess of the refrigerator door. The refrigerator door is movably positionable between at least a first position and a second position relative to the plate to permit adjustment of a location of the refrigerator door relative to the door hinge.

A fitting for a folding door arranged on a furniture carcass has at least one first door leaf and a second door leaf connected thereto in a jointed manner. The fitting has a contact part arranged on the first or second door leaf, and the contact part is movably arranged between a contact position and a rest position on the first or second door leaf. In a closed position of the folding door, the contact part in the contact position can be brought into contact with the furniture carcass or a component of the furniture carcass and, in an open position of the folding door, the contact part in the rest position is movable in an intermediate chamber between the first and the second door leaf.

Methods and systems are described for determining operation of an openable barrier and direction of movement of a person through an opening controlled by the barrier. A method includes detecting with a hinge sensor a closed position for the barrier, the hinge sensor being mounted to a hinge of the barrier, determining with the hinge sensor when the barrier changes position from the closed position to an open position, detecting with at least one motion sensor motion of an object in proximity to the opening, and determining a direction of movement of the object through the opening based on whether the motion is detected before or after detecting the change in position of the barrier.