Abstract:
A door closer 1 includes an anchor assembly 10 for mounting on a door frame, an actuator assembly 30 for mounting within the thickness of a door which is hinged for movement between open and closed positions relative to the door frame, an operating member 22 coupled by a linkage 20 to the anchor assembly 10 and mounted for a range of movements between a retracted position and an extended position, a resilient driving apparatus 45 arranged to exert a driving force on the operating member 22 to drive the operating member towards the retracted position to draw the door into its closed position relative to the frame, a damper mechanism 50 operatively connected to the operating member 22 so as to damp movement of the operating member 22 at least in a direction towards the retracted position, and a resilient thrust device 90 arranged to exert an increased driving force on the operating member 22 over a defined part of its range of movement as the operating member 22 approaches the retracted position, corresponding to movement of the door over a final part of its movement into its closed position, and wherein the resilient thrust device 90 includes at least one spring 92 which acts in a direction generally normally inwardly relative to the direction of movement of the operating member 22, to apply the increased driving force to the operating member 22.
Abstract:
PROBLEM TO BE SOLVED: To provide a door closure for a door, which can exert large door closing force in a wide zone reaching a full-closed position or a position immediately before the same in a manner minimizing a burden of door opening operation on the operator. SOLUTION: According to the structure of the door closer, when the door is closed, part of elastic deformation of each of springs 8, 9 generated by the door opening operation is maintained in a deformed state until the door reaches the full-closed position or the position immediately before the full closure, and thereafter the deformed state is released to reset each of the springs 8, 9 to an initial state. An intensifying piston 10 is moved at the time of the door opening operation to elastically deform the springs 8, 9 in cooperation with a piston 7, and an elastic deformation component of each of the springs 8, 9 generated by the movement of the intensifying piston 10 is maintained in the deformed state as part of the elastic deformation until the door reaches the full-closed position or the position immediately before the full closure, which is then released. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To make an increased driving force applied to an operating member for closing a door in a final part for moving the door to a door closed position, act in the substantially right-angled direction to the moving direction of the operating member. SOLUTION: This door closing device has a fixed assembly 10 installed to a door frame, an operation assembly 30 hinged to the door frame and installed at a plate thickness part of the door, the operating member 22 connected to the fixed assembly 10 by a continuously contacting link 20, a resilient driving device for pulling the door up to a door closed position to the door frame by applying the driving force to the operating member, a damper mechanism 50 for damping the movement of the operating member in the direction for turning to a pulling-in position, and a resilient thrust device 90 for applying the increased driving force to the operating member in a limited part of a moving range in response to the approach of the operating member to the pulling-in position. The resilient thrust device has a spring 92 for applying the increased driving force to the operating member by acting in the direction for crossing the moving direction of the operating member. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
The invention concerns an electromechanical drive for a door or the like, with a motor and a transmission, which are connected with each other, wherein a drive gear in the form of a gear wheel or the like is present on a drive shaft of the transmission and cooperates with means for moving the door or the like, preferably in or on a guide rail. The drive has a modular design, and it has a compact power unit that can be used with different types of mounting units for different doors. In this regard, the power unit is equipped with a standard mounting bracket. In addition, different housings can be used for different areas of application.
Abstract:
The invention relates to a regulating valve, which is attachable, in particular in a bore of a hydraulic door closer, executed with a female thread. The regulating valve has a body, adjoined by a regulating area, and a thread provided with an anti-rotation means. The thread with the anti-rotation element can be screwed into the female thread of the bore of the hydraulic door closer. In order to provide a regulating valve with a simple design while excluding unwanted adjustment of the regulating valve during the operation, the anti-rotation means includes a raised area, which can cooperate with the bore or the female thread of the door closer.
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 wall 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 method for making a hydraulic door closer includes the steps of molding material to form an elongated single-piece housing having a longitudinal cylindrical bore extending from a first open end thereof to a closed second end, a transverse intersecting bore, and mounting feet; installing a spring within the cylindrical bore at the closed end of the housing; installing a piston within the cylindrical bore in contact with the spring, the piston having a toothed rack thereon and an opening in each end to permit passage of fluid therethrough; installing a pinion gear in the transverse intersecting bore in meshed engagement with the toothed rack; installing an endplug with a port in the first end of the longitudinal cylindrical bore; and inserting a valve device through the port, for controlling flow of fluid through the piston, and for thereby controlling closing speed of the door. The single-piece housing as well as other components may be molded from metal or polymeric materials. Polymeric materials are preferred for their flexibility, lubricity, and moldability.