DE1019203B - Movement device for shutters, blinds, awnings or the like. - Google Patents

Description

GERMAN

The invention relates to a movement device for shutters, blinds, awnings or the like Winding drum for the roller shutter od. Like. Is arranged and an electric motor whose shaft is coaxial to the axis of the winding drum, and between this shaft and the winding drum includes switched reduction gear and a brake that in the idle state of the electric motor Holding the winding drum braked and only releases it when the electric motor is switched on.

Movement devices of the type indicated above are known.

For example, in a known movement device, the motor and the associated one Control for driving the winding drum of the roller shutter, od. The like. Arranged within the drum itself. In this device, however, no brake is provided, since the latter is carried out by a worm gear is replaced. In addition, this device lacks means for manually driving the take-up roll if the engine fails.

Quite apart from the fact that the efficiency of the control is impaired by the worm transmission a more powerful motor will also be required to drive the roller shutters. The movable one The arrangement of the take-up drum in this device is increased in spite of the arrangement of a spring the workload to their. Drive.

In another known movement device, the control is between the motor and the take-up reel provided with a brake connected to a clutch. This device has a flexible The door opens and is powered by a special electrical system. Here is a gearbox needed, which is unsuitable for mounting inside the take-up roll.

This device also lacks the manual drive, which can work together with the control, which is used for the motor drive of the winding drum.

The invention is based on the object of creating a simple and safe movement device. The object is achieved in that the motor shaft is axially displaceably connected at its end protruding into the winding drum with the transmission gear and is also held displaceably at its opposite end in the inner ring of a roller bearing which is carried by the stationary parts of the device, that also the The motor shaft is firmly connected to the movable part of the brake and is subject to the action of a spring which pushes the movable part of the brake against an immovable part of the brake, which is held by the fixed parts of the device.
Blinds, awnings or the like.

Applicant:
FATA S. r. L ₁ Turin (Italy)

Representative: Dipl.-Ing. A. Bohr, Munich 5,

Dr.-Ing. H. Fincke, Berlin-Lichterfelde,

and Dipl.-Ing. H. Bohr, Munich, Müllerstr. 31,

Patent attorneys

Claimed priority:
Italy 29 July 1953

Fernando Creonti, Turin (Italy),
has been named as the inventor

presses, that also held on the motor shaft Armature has a conical shape to the shaft when switching on the electric motor by loosening the To be able to move the brake, and that the motor shaft protrudes from the take-up roll End to cooperate with a device for rotating the take-up drum of Hand is provided with claws, the hand turning device in addition to the electric motor and the associated devices for the motorized drive of the take-up drum supporting end of the Drum is attached.

The device for rotating the winding drum by hand by means of a chain can be a grooved Have disc wheel freely on a hub of one end of the fixed cylindrical Housing is circumferentially guided, this disk wheel in the axial direction by the action one or more axial cams can be adjusted, which are operated by means of a cable to to engage a dog clutch, which connects the motor shaft with the disk wheel, and the same to move the motor shaft axially in good time to such an extent that the brake is released.

It appears expedient that the one or more provided for the axial displacement of the disks Axial cams are under the action of return springs that move the cam or cams into the uncoupling position return, as soon as the rope control is interrupted.

7C9 759/71

According to a further development of the subject matter of the invention, there is the stationary one that receives the control Housing made up of three sections, the middle section of which is the motor and the two side sections Sections take up the reduction drive or the brake with the hand turning device.

Another embodiment is that the part of the fixed housing that houses the hand turning device with a side Slit is provided, which serves for the passage of the drive chain and the control cable.

The following is an embodiment of the invention at. Hand of the drawings described. It shows

1 shows the device according to the invention, partly in section, and

FIG. 2 shows a section along line II-II from FIG. 1. In the winding drum 1 for a roller shutter, a chamber is partitioned off by a wall 2, within which houses the device according to the invention.

In addition to the wall 2, a disk 4 is provided which has a ring gear 5 firmly attached to its inside holds and the means of a. Pipe part 3 is attached to the drum 1, which has a bearing chuck at one end or a bearing bush 28 holds to enable its rotation on a fixed, cylindrical housing 6 can be made, which is arranged within the tubular part 3 and the control device for the rotation of the drum 1 takes up.

In the middle. Part of the housing 6 is the lamellar field winding of an electric motor, the armature 8 of which is conical and is carried by a shaft 9 which is coaxial with the drum 1 and can be adjusted axially against the action of a spring 13.

The shaft 9 carries on its located at the disk 4. At the end of a gear wheel 10 with which a pinion 12 is driven via a reduction drive of a known type is, which in turn is in engagement with an internally toothed ring gear 5 with the Winding drum 1 is firmly connected.

The shaft 9 stops at its opposite other End of a washer 14 which has a conical surface with a high coefficient of friction having material is occupied and that of a conical cooperating with it Opposite surface of a fixed disc 15 is opposite.

The disk 15 carries the shaft 9 via a bearing 29 which is as frictionless as possible and is cylindrical Part 16 firmly connected, which forms a closure for the housing 6 and with it by means of bolts 17 connected is.

The outwardly protruding end of the part 16 is through a. Head part 21 completed, the one has central hub on which a disk wheel 18 can rotate freely. The disk wheel 18 is on his Grooved circumference and thus receives a drive chain 19 which passes through a slot 20 into part 16 can occur. The disk wheel 18 is also provided with claw teeth 22 with a corresponding Set of opposing claw teeth that can engage in one on the shaft 9 wedged part 23 are provided.

A disk 24 can rotate on the hub of the disk wheel 18, this rotation being the Disc 24 is effected for a limited angle of rotation by means of a cable 30 which is on the disc 24 is wound up. The disc 24 has protruding end projections 25 in the form of axial cams which interact with a shaped ring 26 which is fastened to the head part 21. Usually the Disk 24 held tightly against the ring 26 so that the lugs 25 in corresponding recesses of the ring 26 as a result of the action of one or more springs 27 occur.

The device works as follows: In the inactive position, the motor shaft 9 is in the axial direction moved by the spring 13 to the left, whereby the conical surfaces of the discs 14 and 15 with each other come to the braking system. When the electrical current is switched on, the conical armature 8 shifted together with the shaft 9 to the right, so that the brake is released and the winding drum 1 can be set in circulation via the translation drive 11.

Should be due to lack of power or damage of the motor, the electric drive fails, then the winding drum 1 can also be from Can be rotated by hand by adjusting the disc 24 by a small angle of rotation by means of the cable 30 will. As a result, the cams, 25 of the disk 24 lift completely out of the recesses of the Ring 26 out and lie on the outer surface plane of the ring 26, so that the disc 24 and the Disc wheel 18 can be axially displaced by a sufficient amount to the dog clutch 22, 23 to couple and also to move the shaft 9 axially to the right to release the brake 14,15.

If the disc 24 is held in this position, then the disk wheel 18 can be rotated by means of the chain 19 to over the shaft 9 and the reduction drive 11 to rotate the drum 1.

When the rope 30 is released, the pulley 24 and pulley 18 reverse by the action the return springs 27 back to the left in the rest position so that the device is back for the drive by the motor 8 is enabled.

Claims (5)

Patent claims: 1. Movement device for shutters, blinds, awnings or the like. In the winding drum Od for the shutters. The like. Is arranged and an electric motor whose shaft for _ Axis of the take-up drum is coaxial, as well as one between this shaft and the take-up drum includes switched reduction gear and a brake that is in the idle state of Electric motor keeps the winding drum braked and only when the electric motor is switched on releases, characterized in that the motor shaft (9) at its in the winding drum (1) protruding end with the reduction gear (5, 10, 12) is axially displaceably connected and also at its opposite end axially displaceable in the inner ring of a roller bearing (29) is held by the stationary Parts (16j of the device is carried, that furthermore the motor shaft (9) with the movable Part (14) of the brake is firmly connected and the action of a spring (13) is subject to the movable Part (14) of the brake against an immobile, from the fixed parts (16) the device held part (15) of the brake presses, that also on the motor shaft (9) held armature (8) has a conical shape to the shaft (9) when switching on the electric motor by releasing the brake (14, 15) to be able to move, and that the motor shaft (9) on their end (23) protruding from the winding drum (1) for the purpose of cooperation is provided with a device for rotating the winding drum (1) by hand with claws, wherein the hand turning device next to the electric motor and the associated. Devices for the motorized drive of the winding drum (1) supporting end of the drum (1) is attached. 2. Movement device according to claim 1, characterized in that the device for Rotating the winding drum (1) by hand has a grooved disc wheel (18) which is free a hub of one end of the fixed cylindrical housing (16) is circumferentially guided, and that this disc wheel (18) in the axial direction by the action of one or more Axial cams (25) can be adjusted, which are actuated by means of a cable (30) to achieve a Engage the claw coupling (22, 23) which connects the motor shaft (9) with the disk wheel (18) and at the same time to move the motor shaft (9) axially so far that the brake (14, 15) is released. 3. Movement device according to claim 1 or 2, characterized in that the or the for the axial displacement of the discs (24 and 18) provided axial cams (25) below the action of return springs (27) which move the cam or cams (25) into the uncoupling position as soon as the rope control (30) is interrupted. 4. Movement device according to one of claims 1 to 3, characterized in that the The fixed housing accommodating the control consists of three sections (11, 6, 16), of which the middle section (6) the motor and the two side sections (11 and 16) the Pick up the reduction drive or the brake with the hand turning device. 5. Movement device according to one of claims 1 to 4, characterized in that the Part (16) of the fixed. Housing that accommodates the hand turning device, with a side Slot (20) is provided for the passage of the drive chain (19) and the control cable (30) is used. Considered publications:
German Patent No. 523 877;
French Patent No. 829,402;
U.S. Patent No. 2,045,765. 1 sheet of drawings © 709 759/71 10.57