Abstract:
A door closer with a self-powered control unit is disclosed. The control unit for the door closer includes a drive gear configured to rotate in response to movement of a door, and a chain arranged to cooperate with the drive gear to produce linear motion in response to rotation of the drive gear. At least one gear creates rotational motion from the linear motion of the chain to turn a generator and generate electricity to power the control unit. In some embodiments, a set of clutch gears is disposed between the chain and the gear creating the rotational motion from the chain so that only one direction of the rotational motion is transferred to the generator in response to movement of the door in any direction. The control unit can additionally include a power management circuit to store energy from the generator.
Abstract:
The present embodiment provides a hinge assembly of a refrigerator. The hinge assembly includes a bracket; a shaft rotatably supported by the bracket and providing a rotation center of a door; a transfer unit transferring selectively rotatory power of the door to the shaft in order to move the shaft upward and downward; and an operating unit operating the transfer unit.
Abstract:
A vehicle tailgate movement assist mechanism including a tailgate configured to rotate between opened and closed positions, and a tailgate lever arm fixedly connected to a bottom area of the tailgate. A drive lever may be pivotally connected to the lever arm and to a bell crank at opposite ends thereof. The bell crank may be connected to a shaft of a rotary gear pivotally anchored to a vehicle body. A rotary damper may be anchored to the vehicle body and include a damper gear connected to a shaft thereof. The damper gear may be rotatably meshed with the rotary gear. Rotation of the tailgate from a closed to an opened position simultaneously rotates the lever arm to move the drive lever and the bell crank to thereby rotate the rotary gear which rotates the damper gear to actuate the rotary damper to reduce an opening speed of the tailgate.
Abstract:
A closure mechanism C comprising a elongated push/pull member 1, a base part 2, a resilient element 4, such as a coil spring, a motion converting means 6, such as a rack-and-pinion gearing, comprising a rotary output element 6o and a rotary braking device 7, such as a centrifugal brake, comprising a rotary input element 7i directly or indirectly coupled to said rotary output element 6o at least during movement of the elongated push/pull member 1 towards said first position, so as to be rotated thereby. The elongated push/pull member 1 and the base part 2 are assembled to each other so that said elongated push/pull member 1 is guided in a translational motion relative to the base part 2 between a first and a second position. The resilient element 4 is placed between said first and base parts 1, 2 so as to urge the elongated push/pull member 1 towards said first position. The motion converting means 6 converts the translational motion of said elongated push/pull member 1 relative to said base part 2 into a rotational motion of said rotary output element 6o, which is transmitted to the rotary input element 7i, and the rotary braking device 7 brakes its rotary input element 7i with a variable braking torque which increases and decreases with the rotational speed of said rotary input element 7i.
Abstract:
A braking apparatus has a main body for connection to one of a frame and a closure member mounted on the frame to undergo linear reciprocating movement between open and closed positions of the closure member. A tubular shaft is mounted in a main body for undergoing rotation. A resistance member is rotatably mounted on the tubular shaft and is disposed in an interior space of the main body containing a braking fluid. A spiral rod for connection to the other of the frame and the closure member is screw-threadably engaged with the tubular shaft so that the tubular shaft undergoes rotation when the spiral rod and the tubular shaft are relatively moved in an axial direction of the spiral rod. When the closure member undergoes linear reciprocating movement, the main body or spiral rod relatively moves in the axial direction of the spiral rod, the tubular shaft and the resistance member undergo rotational movement, and the resistance member receives a resistance of the braking fluid so that the tubular shaft rotates under a braking force of the braking fluid and reduces a movement speed of the closure member.
Abstract:
The clutch includes a drive disk, a follower disk and a brake disk. When current flows, the follower disk is connected with the drive disk to transmit a power from a driving unit to a door-opening/closing mechanism. When no current flows, the follower disk is separated from the drive disk to cut off the power transmission from the driving unit to the door-opening/closing mechanism. In a state that the drive disk and the follower disk are separated from each other, the brake disk is connected to the follower disk to brake the door-opening/closing mechanism in the opening direction of the door, and to allow the door-opening/closing mechanism to move in the closing direction of the door.
Abstract:
The present invention relates to a door closer, in a housing of which is received a sliding cylinder, the sliding cylinder is provided with teeth on an outer periphery thereof for meshing with a gear wheel of a door shaft, a sliding cylinder interiorly formed with inner pipe serves to move relative to a piston of a piston shaft. At an end of the piston shaft is provided with an oil-replenishing cylinder that serves to replenish hydraulic oil to the sliding cylinder via a one-way valve.
Abstract:
A locking arrangement for a door system of a transit vehicle includes a combination of a lock mechanism and an electromagnetic brake. The lock mechanism enables positive locking of at least one door but does not require substantial contact between moving and stationary lock elements. The lock mechanism is connected with the manual release means for door opening during an emergency. The electromagnetic brake maintains door seal compression in the closed and locked condition which improves sealing capabilities and provides for reliable lock mechanism operation. Such combination provides locking redundancy and meets various requirements regarding annunciation and manual release operation.
Abstract:
A display tilting apparatus includes a moving bracket that supports a display, a ratchet mechanism that controls pivoting of the moving bracket to a first direction, an anti-tilting mechanism that inhibits pivoting of the moving bracket to a second direction that is opposite of the first direction, and a fixed bracket that is pivotably connected to the moving bracket via a pivot axis. The anti-tilting mechanism includes a first anti-tilting member, and a second anti-tilting member that is mounted on the fixed bracket. The first anti-tilting member and the second anti-tilting member are mounted so as to make a physical contact to each other.
Abstract:
A connection wire is connected to a part of a rear door popped up in a door-opening direction by an urging force. A pulley rotates responsive to a driving motor inside a wire-winding device to wind the connection wire thereon. In this manner, the rear door is automatically closed. The pulley is urged in a connection wire-winding direction by a power spring. A clutch is between the pulley and the driving motor. When the rear door is pressed by an operator's hands in a door-closing direction while the rear door is being closed, the pulley is rotated by the power spring, thus winding the connection wire thereon and preventing the connection wire from becoming loose. At this time, the connection between the pulley and the driving motor is cut off by the clutch. Thus, the pulley is rotated by the power spring freely and rapidly. In this manner, the rear door can be closed manually even while it is being closed automatically. Further, the connection wire can be prevented from becoming loose and from being sandwiched between the body of the vehicle and the periphery of a rear opening thereof.