FI114730B - Arrangement on swing door equipment with door closer - Google Patents

Abstract

An arrangement in a swing door apparatus (1) comprising a door closer (2), the piston means (3) of which drives a driving shaft (4), which is turned in accordance with the door motions, and an actuator (7), e.g. an electric motor (7), the operating shaft (8) of which is in operative connection with said piston means (3) for providing the opening motion of the door. Switch means (9) are arranged between the operating shaft (8) of the actuator and the piston means (3), which switch means are arranged to switch off the drive from the actuator (7) to the piston means (3) at least while the door is being closed.

Description

114730

ARRANGEMENT WITH DOOR-CLOSED DOOR-MOVING DOOR-5 SA - ANORDNING VID EN SVÄNGDÖRRANLÄGGNING MED EN DÖRRSTÄN-GARE

The invention relates to an arrangement according to the preamble of claim 1.

10

In automatic swing door systems, the door is opened by means of an electric motor or other suitable drive. It is advantageous to integrate the door closure with the piston member in a transmission connection with the drive shaft rotating according to the movements of the door to the swing door apparatus. Since the operation of the door closure is generally based on a return spring which is compressed when the door is opened, the closing of the door can also be accomplished by the spring in question without the actuator in question. This saves on operating costs for the drive. One problem with this is that the closing of the door, particularly during power cuts, should be made as resistant as possible so that closing can be ensured in all situations. If the force of the door closing spring is required to move other than the door itself and its piston actuated, the result may be a need for a stiffer spring, which in turn requires: * more power from the actuator which, while opening, compresses the spring * · *.

25 'IL The object of the invention is to provide a simple and reliable solution to the above problem.

The object of the invention may be achieved as more particularly as set forth in claim 1 and other claims 30. According to the invention, coupling means are provided between the drive shaft of the actuator and the piston member, which is arranged to disconnect the drive transmission from the piston member. This ensures that the actuator and the gearbox, if any, are operable only when the door is opened, whereby the spring closing force of the door closer is only required to move the door and the piston member engaging it, as in a conventional door lock.

In a practical embodiment, the coupling means preferably comprises a first transmission member engageable with said actuator drive shaft, a second transmission member engageable with said piston member in a power transmission shaft, and an axially displaceable coupling member for engaging and disengaging the transmission of said transmission. The arrangement further comprises control means for selecting the respective position of the switching member.

15

Said control means preferably include a solenoid which, when switched on, is arranged to control the switch member in its switching position, and a spring member for moving the switch member in its release position. Thus, in the event of a power strip, moving the switch member to its detached position can advantageously be: Y: 20 and thereby ensure the door closes.

The transmission between the coupling member and the transmission means may be provided by a plurality of movable transmission members, preferably balls having a fixed position in the coupling member and arranged to cooperate with the transmission means. with the guiding grooves achieved. Hereby, the guiding grooves of said second transmission member are preferably dimensioned such that they provide control of the balls * - * only when the clutch member is in the engaging position, thereby actuating the *; the transmission comprises an axially extending region which allows the second transmission to rotate independently of the clutch and the ball.

! 30 3 114730

The transmission from the control means to the coupling member may be provided by a pivotable fork lever arranged to actuate the guide groove in the sleeve member element connected to the coupling member for moving the coupling member axially.

5

The invention will now be described, by way of example, with reference to the accompanying drawings, in which Fig. 1 is a side elevational view of a hinged door device according to the invention, 10 - Fig. 2 is a top view of a switching device arrangement of Fig. 1; IV-IV with the arrangement in a non-engaging position, FIG. 5 is a sectional view of IV-IV in FIG. 2 with the arrangement in a engaging position, and FIG. 6 is an exploded view of the essential parts of the switching means.

In the drawings, reference numeral 1 denotes a door (not shown) hinged door system,::: 20 comprising an electric motor 7 or other suitable actuator for causing the door to open, and a door closure 2 which causes the door to close. The door closure 2 comprises a piston member 3 which is pivotally connected to a drive shaft 4 engaged by the door and rotatable according to the door movements, and a shaft 6 operatively connected to the piston member 3 and actuating the piston member 3 to open the door. the shaft is designated by reference numeral 8. In addition, a gearbox for adjusting the speed of rotation of the shaft 8 is provided between the electric motor and the operating shaft 8 as needed; to suit. Further, according to the invention, between the shafts 6 and 8 there are coupling means 9 provided with a frame part 10.

ί 30 4 114730

Referring more particularly to Figs. 2-6, the coupling means 9 include a first transmission means 11 which is coupled to the actuator shaft 8 of the electric motor and a second transmission means 12 which is coupled to said piston member 3 in a transmission connection shaft 6.

Further, the coupling means include an axially displaceable coupling member 13 for engaging and disengaging the transmission between the transmission means 11 and 12, and control means for selecting the respective position of the coupling member 13. The control means include a solenoid 17 which, when switched on, is arranged to guide the clutch member 13 to its engaging position, and the spring member 19 for moving the clutch member 13 to its transmission releasing position. The transmission from the shaft 17a connected to the solenoid anchor to the coupling member 13 is provided by a pivotable fork arm 18 having legs 18a and 18b arranged to actuate a guide groove 14a in the sleeve element 14 mounted on the coupling member 13 for axial displacement. The body 10 of the coupling means 15 has projections 10a on which the fork lever 18 is pivotally supported, and further the spring 19 is supported on the pin 20 of the second projection 10a.

The transmission between the coupling member 13 and the transmission members 11 and 12 is provided by a plurality of balls 15 and 16 arranged in two rows in the coupling member: the control openings 13a and 13b between the coupling member 13 and the sleeve element 14. When the coupling means are in the engaging position, the balls 15 are cooperating with the guide grooves 12a of the transmission member 12 and the balls 16 are respectively engaged with the guide grooves 11a of the transmission member 11. This corresponds to • »5 situations. The solenoid 17 then has power and the solenoid shaft 17a has moved into the solenoid and turned the fork lever 18 to the position of Figure 5.

\ .; Thus, in this case, the electric motor 7 has a power transmission connection to the piston element 3, so that the hinged door system opens the door.

To close the door, the above transmission line is cut off, whereupon Sole-j 30 witches 17 are turned off. As a result, the spring 19 turns the fork; the lever 18 to the position of Figure 4. The balls 16 are then moved along the guide grooves 11a and the transmission connection between the transmission member 11 and the coupling member 13 is maintained. Instead, the guide grooves 12a of the second transmission member 12 are dimensioned in the axial direction so short that they provide control of the balls 15 only when the clutch member 13 is in the engaging position. When the coupling member 13 moves to a non-engaging position, the balls 15 move away from the guide grooves 12a to a flat area 12b, allowing the second transmission member 12 to rotate freely independently of the coupling member 13 and the balls 15, thereby disengaging the transmission.

It will be appreciated that the operation of the switching arrangement of the invention requires control logic 10 and sensor arrangements to indicate the current position of the door and thus to control the operation of the solenoid controlling the switching means so that the revolving door system can operate reliably automatically. In practice, the hinged door assembly is preferably controlled such that the transmission link from the electric motor or the like 7 to the drive shaft 4 is connected only when the door is opened normally.

In addition, the transmission may be engaged in certain special situations, such as when the door has been prevented from closing, requiring the door to be re-opened to the open position, or if for some reason the spring force alone is not sufficient to close the door.

: Y: 20 The embodiment illustrated is well suited to the case where the transmission from the electric motor to the piston member utilizes a ball screw or similar arrangement. However, the invention is not limited to the embodiment shown, but many variations are conceivable within the scope of the appended claims.

Claims (6)

An arrangement in a hinged door assembly (1) comprising a door closure (2) having a piston member (3) engaging in a drive relationship to a drive shaft (4) rotatable according to the door movements, and an actuator (7) operable by an electric motor (7). axle (7) operatively connected to said piston member (3) to provide a door opening movement, characterized in that coupling means (9) arranged to disengage the actuator (7) are provided between the actuator drive shaft (8) and the piston member (3). ) from the piston member (3) of the transmission connection up to -10 each time the door is closed. Arrangement according to Claim 1, characterized in that the clutch means (9) comprise a first transmission element (11) connected to said actuator drive shaft (8), a second transmission element (12) connected to 15 said piston element (3). ), and an axially displaceable coupling member (13) for engaging and disengaging the transmission between said transmission members (11, 12), and the arrangement comprising control means (17, 19) for selecting the position of the coupling member (13). : Y: 20 An arrangement according to claim 2, characterized in that said control means comprise a solenoid (17) which, when switched on, is arranged to control the switching member (13) in its switching position, and a spring member (19) switching 13) to move to its release position. ... 25 Arrangement according to one of the preceding claims, characterized in that * ..! that the transmission between the switching means (13) and the transmission means (11,12) is obtained by a plurality of movable transmission means, preferably balls (15,16), having a fixed position in the switching means (13) and arranged cooperating with the guide grooves (11a, 12a) provided to the transmission means. j 30 I 7 114730 An arrangement according to claim 4, characterized in that the guide grooves (12a) of said second transmission member (12) are dimensioned such that they provide ball control only when the clutch member (13) is in a engaging position, said second transmission member (12) having A 5-point region (12b) allowing the second transmission member (12) to rotate independently of the clutch member (13) and the ball (15). Arrangement according to Claim 2, characterized in that the transmission from the control means (17, 19) to the coupling member (13) is arranged by a pivotable crank lever (18), 18a, 18b) arranged to act on the sleeve element (14) connected to the coupling member (13). ) in the guide groove (14a) for moving the coupling member (13) in the axial direction. »» · I I t »» »t» »» * 114730