DE19710390A1 - Device for switching off the drive of the motor of electrically operated shutters, awnings, roller doors and the like. the like - Google Patents

Description

The invention relates to an apparatus for electrically switching off the drive operated shutters, roller shutters, awnings and the like with torque-controlled Switch-on and switch-off points.

From the patent EPO 534 894 B1 is a device for torque controlled end and fault shutdown of roller shutters, roller doors and the like known which as part of the engine mount outside the engine as a switching link rotates or swivels, switches are actuated and thus the drive circuit opens and closes for the motor. In the respective upper or lower In the end position or in the event of a malfunction, the blocked tank holds the motor shaft - here described: As a rule, the tube of the tubular motor - fixed, and the motor generates a counter torque against an associated spring, the Preload force determines the rotary movement of the switching element. The feather is here as a compression spring in the manner of a coil or disc spring or designed as a disc spring assembly.

As a result of the space requirement for the device with compression springs mentioned, Adjusting screws, switching elements, switches and other components can be Device only attached outside the engine as a separate component will: Among other things, the proper function is dependent dependent on environmental influences such as water, ice, dirt etc. and still from the care of the fitters when installing z. B. in the roller shutter box or the like

Furthermore, the construction of the device requires a large number of components such as levers, pivot bearings and set screws with correspondingly high production effort and precise component tolerances.  

The object of the invention is a torque-dependent shutdown device to improve the type mentioned so that they in a very small space requires one from environmental influences such as water, ice, dirt etc. as well as from the installation care of the mechanics ensures independent function and that the manufacturing effort by reducing the number of components is reduced.

To achieve this object, the invention proposes that the shutdown direction built into the motor as an integral part of the motor becomes.

As a rule, the motors are constructed as so-called tubular motors, whereby Gear, armature, stator and brake electrical connections and linear or rotationally adjustable limit switches behind are arranged in a metal tube. On the transmission side there is an output attachment, z. B. polygonal fitting and on the motor bearing coupling is located on the opposite end link, the electrical connection lines and the adjustment mechanism for the limit switches.

In the shutdown device according to the invention, a torsion spring rod ( 12 ) with one end inside ( 11 ) of the metal tube ( 1 ) is positively z. B. with an anchor plate ( 10 ) connected to the metal tube ( 1 ).

The other end of the torsion spring rod ( 12 ) protrudes from the, the transmission side opposite, end face and is molded as a motor bearing coupling member ( 13 ) and takes in the z. B. wall-mounted motor bearings on the torques.

The torsion spring bar ( 12 ) is rotatably mounted in the cover ( 14 ) on the end face.

According to the applied torque rotates the metal tube (1) with the lid (14) in the end face at the free end (13) of the torsion spring bar (12) and pivots the fixed inside the cover (14) limit switch (15/25) against the form-locking connected to the torsion bar spring (12) lever (17/27) opens and closes the drive circuit for the motor on the thus-operated limit switch (15/25).

The permissible torque (15/25) determined by the position or the distance (20) of the limit switch to the controls (17/27). The position or the spacing of the limit switch (15/25) is to be changed in accordance with applied structure with a screwdriver from the outside.

The particular advantage of the invention is that an automatic, torque-dependent shutdown device as an integral part of the tubular motor for the electrical operation of roller shutters, roller doors, awnings and the like can be realized in which the mechanics necessary for function in order to environmental influences such as water, ice , Dirt, etc. protected inside the metal tube ( 1 ) of the tubular motor is arranged and which as a one-piece component of the tubular motor assembly regardless of the care of the tubular motor and roller shutters, such as. B. tilting the motor shaft ( 2 ), the on and off function of the drive current for the motor in the end positions of the roller shutters or in the event of an accident.

Another advantage of the invention is that the electrical lines ( 19 ) in the electrically grounded and secured interior of the metal tube ( 1 ) can be performed and thus secure protection against the electrical failure is guaranteed.

Referring to Figs. 1 to which the roller shutter lining (3) is wound will be illustrated how the individual tubular motor components and cut-off device can be arranged in the metal tube (1), said tubular motor inserted in the polygonal motor shaft (2).

On the gearbox side with gearbox ( 4 ) there is the polygonal output attachment piece ( 6 ) on the gearbox shaft ( 5 ) and, following the gearbox ( 4 ), the motor parts armature ( 7 ), stator ( 8 ) and the brake ( 9 ) . As a component of the switching device, the anchor plate ( 10 ), positively connected to the metal tube ( 1 ), is arranged and in turn positively connected, the fixed bearing end ( 11 ) of the torsion spring bar ( 12 ). The polygonal molded motor bearing coupling member ( 13 ) of the torsion spring bar ( 12 ) protrudes from the cover ( 14 ) of the metal tube ( 1 ) on the opposite side of the gearbox side.

The torsion spring bar ( 12 ) is rotatably mounted in the cover ( 14 ).

On the side facing the metal pipe interior side of the lid (14), the two limit switches are mounted one on each of the torsion spring bar (12) rotatably mounted switch wheel (16/26) (15/ 25) and location in the switch actuating suitable are the shift lever ( 17/27) form-fit to the rod spring torsion (12).

Adjusting cam (18/28) as components of the switch discs (16/26) extend through the cover (14) to the outside.

The electrical leads (19) are guided by the stator (8) through the anchor plate (10) to the limit switch (15/25) or through the lid (14) to the outside.

The operation of this shutdown device is as follows.

A z. B. in the upper end position roller shutter armor ( 3 ) blocks the motor shaft ( 2 ) on which the roller shutter armor ( 3 ) is wound, which in turn over the output extension ( 6 ) the motor on the gear shaft ( 5 ) is blocked. The counter torque is increased, and the metal tube (1) rotates the torsion bar spring (12) around the fixed in the motor bearing Motorlager- coupling member (13) of the torsion spring bar (12) and pivots the respective on the switch discs (16/26) mounted limit switch (15 / 25) against the shift lever (17/27). Hereby, the limit switches are actuated (15/25) and opened and the motor circuit is interrupted.

The attractive brake (9) of the switched-off motor stops against the rotation moment the metal tube (1) in the rotated position to the torsion spring bar (12) and the respectively operated limit switch (15/25) remains open.

By means of adjusting cams (18/28) of the switch discs (16/26), the distance of the limit switch (15/25) can be increased or the lever (17/27) can be reduced.

With increasing distance between the limit switch (15/25) and switching lever (17/27) has to (15/25) lever through the switch (17/27) of the torsion spring bar (12) are more twisted until the actuation of the switch, thus the torque is increased.

Claims (3)

1. A torque-dependent switch-off device for motors electrically operated shutters, roller shutters, awnings and the like., As an integrated component within the motor, consisting of at least one torsion spring ( 12 ) which is connected with its one end ( 11 ) positively to the motor and is inserted with its other end (13) positively in a wall of motor and resiliently torsionally forms the torque support which is equipped with at least one shift lever (17/27) having at least in one end position of the tank (3) includes a switch (15/25) actuating the motor circuit interrupts, characterized in that a torsion spring rod ( 12 ) within the housing-forming metal tube ( 1 ) with its inner end ( 11 ) with an anchor plate ( 10 ) positively, for. B. is connected via a polygon in the middle and the anchor plate ( 10 ) positively, for. B. is connected with a screw connection from the outside to the metal tube ( 1 ), and the torsion spring bar ( 12 ) rotatably supported in a cover ( 14 ) protrudes from the housing-forming metal tube ( 1 ) with a molded polygon ( 13 ) and can be coupled to an engine mount and that a shift lever is opposed to under a load torque of a form-fitting fixed to the metal tube (1) limit switch (15/25) is pivoted and the torsion spring bar (12) at least (17/27) attached form fit, upon actuation by the shift lever (17/27) open the motor circuit. 2. Device according to claim 1, characterized in that at least one limit switch (15/25) is positively secured on a switching disc (16/26) slidably mounted on the inside of the lid (14) and with a through the lid (14 ) outwardly projecting adjusting cams (18/28) is provided and the cover (14) is positively bolted to the metal tube (1) or pinned. 3. Device according to claim 1, characterized in that at least one limit switch (35/45) positively connected with the torsion spring bar (12) and at least one shift lever (37/47) is slidably mounted on the inside of the lid (14) and the Lid ( 14 ) is positively connected to the metal tube ( 1 ).