摘要:
A closure arrangement for an opening in a building includes a number of closure elements (2, 3). At least one of the closure elements (2, 3) is vertically movable by means of operating arms (18). The operating arms (18) are powered by a driving device, which includes at least one drive motor (10). On either side of the closure arrangement, the driving device includes an upright screw (12) which is mounted in an axial bearing (15). Each screw (12) has a nut (14), and the operating arms (18) have abutment faces (17) which rest on the nuts (14). Couplings (16) couple the abutment faces (17) and the nuts (14) with a play for permitting an angular discrepancy between each abutment face (17) and the longitudinal axis of the respective screw (12) as well as transversal movements thereof.
摘要:
The transmission system comprises a grooved screw (4) and a rack (5), and it is characterized in that it also comprises an endless screw (6), the thread of said endless screw (6) including a number of teeth (7) meshed with said grooved screw (4) and said rack (5), so that the rotation movement of said grooved screw (4) is transmitted to the endless screw (6) through the teeth (7) of the thread and moves longitudinally said endless screw (6) by its engagement with the rack (5). It is obtained a transmission system of longitudinal dragging that is simple, quiet and reliable, because between the grooved screw and the rack only the endless screw is placed.
摘要:
The present invention provides a drive system (1) for the operation of a variety of motor operated garage doors (2) and the like. The drive system (1) comprises a motor (5) which drives a rotatable worm drive shaft (9) which mates with a lifting arm (10) connected to the door (2). The drive system (1) is able to be used for all types of garage doors (2) and is easy to install to existing doors as well as providing security for the door (2).
摘要:
O A garage door actuator (10) comprises a motor-driven screw (20) at least partially disposed within guide means (28) and a partial nut (30) which is guided by the guide means and moved longitudinally therealong by engagement with the rotating screw. The partial nut (30) is connectable to a garage door to open and close the door. In order to shorten the package in which .the garage door actuator is transported or shipped, the screw and guide means are both formed in two or more parts which can be coupled together by a screw coupling (11). The screw parts (21, 22) are shipped to the customer in a disconnected condition but one in which the coupling readily may be connected in a proper phase to avoid mismatch of the screwthreads.
摘要:
A garage door operator (10) is disclosed to have a front coupling (60, 90) for a threaded screw (30) of the operator (10) and the rotor of the motor (20). The coupling (60, 90) includes a first coupling device (60) that is a unitary coupling member with opposing recesses (68B, 68A) for receiving each of the rotor shaft (26F) and an end portion (74) of the screw (30). The unitary coupling member thereby connects the screw (30) to the motor (20) for torque transmission from the motor. The second coupling device includes a thrust containment device (92) that is supported on the screw (30), and an intermediate assembly (94, 102, 104, 112, 110, 114) disposed between the thrust containment device and an end portion (44) of the guide rail (40) of the door operator. A retainer component (94) of the intermediate assembly restricts expansion of the thrust containment device.
摘要:
A garage door operator (10) is disclosed to have a front coupling (60, 90) for a threaded screw (30) of the operator (10) and the rotor of the motor (20). The coupling (60, 90) includes a first coupling device (60) that is a unitary coupling member with opposing recesses (68B, 68A) for receiving each of the rotor shaft (26F) and an end portion (74) of the screw (30). The unitary coupling member thereby connects the screw (30) to the motor (20) for torque transmission from the motor. The second coupling device includes a thrust containment device (92) that is supported on the screw (30), and an intermediate assembly (94, 102, 104, 112, 110, 114) disposed between the thrust containment device and an end portion (44) of the guide rail (40) of the door operator. A retainer component (94) of the intermediate assembly restricts expansion of the thrust containment device.