Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
  • E06B9/40—Roller blinds
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/60—Spring drums operated only by closure members
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
  • E06B9/58—Guiding devices
  • E06B2009/583—Cords or cables

Definitions

• the present invention relates to a tensioning device intended to allow the winding and unwinding of a flexible protective element kept under tension, on a winding tube, which is provided with a tension spring, one end of which is attached to the winding tube and a second end is attached to a coaxial axis.
• German Patent No. 2,303,782 describes a winding device for a screening screen, which is kept stretched by a reaction voltage. The reaction force takes place using a cable which is fixed to a reinforcement on the lower side of the screen. Via a deflection pulley mounted at the bottom of the ⁇ fREA "box,
• this cable is connected to a rotary member consisting of a trapezoidal winch, on which this cable is wound.
• the cable is wound on the winch in the opposite direction of rotation from that of the protective element on the winding tube.
• the flexible protective element is unwound and the cable is wound at a substantially equal linear speed, so that this cable keeps the protective element in extension, when it is connected to one end of the protective element.
• a cylindrical spring is provided. The tension of this spring determines the tension of the protective element.
• This winding system has various drawbacks.
• the trapezoidal winch requires a lot of space especially in width.
• the shape of this winch must be adapted each time to the thickness of the canvas used as a protective element.
• the length of travel of the screen can be limited by the presence of a tension spring in the space between the pulley and the trapezoidal winch, if this space is not greater than that of the screen.
• the present invention aims to avoid the above drawbacks. It offers a tensioning device
• the transmission means act on a frame at one end of the protective element.
• the frame consists of a profile, possibly provided with pads which slide in slides.
• the invention also relates to a method for maintaining the ⁇ protection element described above stretched, thanks to a prestress in the tensioning device according to the invention, characterized in that drives the wheel in the direction of rotation which is opposite to the direction of unwinding of the flexible element, while the winding tube is kept temporarily stationary by means of a braking device incorporated in the control mechanism, so that said tensioning device tends to become slacken and drive the wheel again in the direction of unwinding of the flexible protection element.
• the transmission means are wound on a rotary member which rotates at the same time as the end of the spring mechanism.
• the transmission means are led to a drive axis and they are set in motion using an adjusted transmission piece which rotates with the end of the spring mechanism.
• FIG. 1 is a side elevational view, partially broken away, of the winding tube and the ten spring of a tensioning device according to the invention
• - Figure 2 is a perspective view of the control means consisting of a strap and a pulley, in which the control shaft is driven by a crank rod;
• FIG. 3 is a perspective view of a similar tensioning device driven by an electric motor and provided with a toothed belt and a toothed wheel, as transmission means.
• a tensioning device for winding and unwinding a flexible protective element kept taut, used as a sunscreen or blackout and designated in its
• WIPO as a whole by the reference notation 1 consists of a winding tube 2 made of aluminum, a tension spring 3, a control mechanism 4, a wheel 5, transmission means 6 and a non-fixing cabinet shown, generally made of aluminum profiles.
• One end of the tension spring 3 is fixed to a coaxial axis 7.
• the fabric 1 is attached to the winding tube 2
• This winding tube 2 is mounted at one of its ends, on the aforementioned drive axis 7 of the tensioning device, freely on a pad 8, and at the other end on the control mechanism 4, possibly fitted with a crank rod 9.
• An aluminum profile 10 is provided on the lower side of the sheet 1, which in effect serves as a slide and finishing profile, AUX at both ends of the aluminum profile 10, nylon pads 11 are attached. These pads 11 ensure silent operation of the winding device.
• the transmission means 6 are wound s a determined tension of a tension spring 3 on a wheel which is integral with a drive axis 7.
• the reaction ten is transferred using a strap 12, a cable 13 and a bypass pulley 14, which is mounted at the bottom of the sunscreen fixing box.
• the strap 12 is wound on a disc 15 in the opposite direction to that of the winding of the protective element 1.
• the cable 13 stretches the protective element with a determined tensile force.
• the winding tube 2 is rotated with the control mechanism 4.
• the control mechanism 4 consists, for example, of a built-in asynchronous motor 16.
• This motor is generally fitted with a thermal circuit breaker.
• the ⁇ motor is provided on the inside, with a braking device with electrical decoupling of the brake, as soon as the motor is energized.
• This motor is provided with a planetary type speed reducer.
• the protective element is kept stretched, thanks to a prestress in the tensioning device.
• the drive axis 7 and the wheel 5 are rotated in the opposite direction to that of the unwinding of the flexible protective element 1, while the winding tube 2 is temporarily held stationary at using a braking device mounted in a control mechanism, so that it tends to relax by driving the wheel 5 again in the direction of unwinding X of the flexible protective element 1.
• the winding tube is set in motion by the control mechanism 4.
• the flexible protective element 1 is unwound and the strap 12 is wound up with an approximately equal speed Y.
• the system according to the invention provides the advantage that the winding and unwinding of the protective element 1 and the sliding of the lower profile 10 can be carried out in any orientation plane.
• the guides not shown of the profile 10 can be kept oblique or horizontal, without the operation of the winding device being altered.
• the reaction voltage of the extension device is transmitted using a transmission means 6 consisting of a strap 12, a cable 13, a belt, a band, a toothed belt 17, a link, a rope, a cord or a chain made of synthetic material, with spherical links, calibrated links or rollers.
• the location of the deflection pulleys and the trajectory of the transmission means depend on the places available and the fixing points available.
• the transmission means 6 consist of a strap 12 and a reel 5.
• the transfer of the reaction voltage 12 is carried out using cables 13, one of which follows the lower edge of the fixing box not shown.
• the transmission means can simply be a toothed belt 17 and a toothed wheel 5.
• the cable 13 forms a closed loop, an arm of which grips the two ends of the profile 10.
• a tension spring instead of a tension spring, one can for example use a torsion spring 3 to elastically connect the winding tube 2 and the wheel 5.

Landscapes

• Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
• Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=3843669

Family Applications (1)

Country Status (5)

Families Citing this family (17)

Family Cites Families (5)

• 1984
  • 1984-07-03 AU AU31043/84A patent/AU3104384A/en not_active Abandoned
  • 1984-07-03 WO PCT/BE1984/000017 patent/WO1985000633A1/fr not_active Application Discontinuation
  • 1984-07-03 EP EP84902578A patent/EP0151143A1/de not_active Withdrawn
  • 1984-07-13 IT IT21895/84A patent/IT1175580B/it active
  • 1984-07-19 CA CA000459267A patent/CA1303428C/fr not_active Expired - Lifetime

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events