EP4198234A1 - Dispositif de tensionnement - Google Patents

Dispositif de tensionnement Download PDF

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Publication number
EP4198234A1
EP4198234A1 EP22205009.8A EP22205009A EP4198234A1 EP 4198234 A1 EP4198234 A1 EP 4198234A1 EP 22205009 A EP22205009 A EP 22205009A EP 4198234 A1 EP4198234 A1 EP 4198234A1
Authority
EP
European Patent Office
Prior art keywords
torsion spring
shaft
tensioning
gear
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22205009.8A
Other languages
German (de)
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoermann KG Brockhagen
Original Assignee
Hoermann KG Brockhagen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoermann KG Brockhagen filed Critical Hoermann KG Brockhagen
Publication of EP4198234A1 publication Critical patent/EP4198234A1/fr
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
    • E05D13/10—Counterbalance devices
    • E05D13/12—Counterbalance devices with springs
    • E05D13/1253—Counterbalance devices with springs with canted-coil torsion springs
    • E05D13/1261—Counterbalance devices with springs with canted-coil torsion springs specially adapted for overhead wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/47—Springs
    • E05Y2201/484—Torsion springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/499—Spring tensioners; Tension sensors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/69—Permanence of use
    • E05Y2800/692—Temporary use, e.g. removable tools
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/106—Application of doors, windows, wings or fittings thereof for buildings or parts thereof for garages

Definitions

  • the invention relates to a tensioning device with a tensioning tool for tensioning a torsion spring designed to support an opening movement of a door leaf and running around a torsion axis extending approximately perpendicularly to the direction of movement of the door leaf, with which a drive device can be detachably coupled to the torsion spring with the interposition of a self-locking gear, as well as the Using a jig to mount gates.
  • Gates serving to close wall openings have a gate leaf which can be moved between a closed position closing the wall opening and a release position at least partially releasing the wall opening.
  • the door leaf in order to move from the closed position into the release position, the door leaf usually has to be raised against the effect of gravity. This applies both to single-leaf overhead doors, lifting doors and sectional doors, in which the door leaf is regularly arranged overhead in a horizontal plane in the release position, and to roller shutter doors, in which the door leaf is regularly wound up into a multi-layer coil in the release position.
  • Torsion springs can be used on these doors to support the opening movement.
  • the torsion spring axis usually extends approximately perpendicular to the direction of movement of the door leaf.
  • One axial end of the torsion spring is held stationary, while another end of the torsion spring is connected in a rotationally fixed manner to a rotatably mounted torsion spring shaft.
  • a traction means such as a traction cable, which is coupled to the door leaf on the other hand, is unwound from a cable drum connected non-rotatably to the winding shaft. This causes the winding shaft to rotate.
  • the end of the torsion spring that is non-rotatably connected to the winding shaft is also rotated and the torsion spring is thus tensioned.
  • the spring energy stored in the torsion spring is then available to support the opening movement of the door leaf, during which the traction mechanism is wound onto the cable drum which is non-rotatably connected to the winding shaft, with this rotary movement being supported by the spring energy stored in the torsion spring, in that the torsion spring
  • the winding shaft and thus the cable drum are subjected to a torque that promotes the winding of the traction mechanism onto the cable drum and thus raises the door leaf.
  • the gate leaf When assembling the gates just described, the gate leaf is usually attached in the area of the wall opening in a position corresponding to the closed position. After installation of the winding shaft, which is surrounded by the torsion spring, the traction mechanism attached to the cable drum connected to the winding shaft is coupled to the door leaf. The torsion spring must then be tensioned in order to produce the operating state that should exist during operation of a door in the closed position, so that spring energy stored in the torsion spring is available to support the opening movement of the door leaf.
  • the end of the torsion spring to be connected non-rotatably to the torsion spring shaft can be non-rotatably connected to a chuck, which is initially mounted such that it can rotate relative to the spring shaft.
  • the chuck can be twisted with respect to the torsion spring shaft using suitable lever tools, in order to tension the torsion spring.
  • the chuck can then be locked in a rotationally fixed manner with respect to the torsion spring shaft.
  • the spring energy stored in the torsion spring is then available to support the movement of the door leaf, in that the torsion spring exerts a torque on the torsion spring shaft, with which the winding end of the traction mechanism coupled to the door leaf on the other hand supports the movement of the door leaf from the closed position to the release position becomes.
  • the torsion spring shaft encircled by the torsion spring is usually arranged overhead.
  • the manual tensioning of the torsion spring involves a great deal of work and considerable danger for the fitter if the spring energy stored in the torsion spring is released in an uncontrolled manner before the chuck is locked with respect to the torsion spring shaft.
  • the DE 43 41309 C1 a tensioning device of the type described above is proposed, in which an uncontrolled release of the spring energy stored in the torsion spring is prevented during assembly by a drive device serving to tension the torsion spring being detachably coupled to the torsion spring with the interposition of a self-locking gear.
  • the clamping tool has a worm shaft.
  • the worm shaft In order to couple the tensioning tool to the torsion spring, the worm shaft is brought into engagement with a worm wheel which is non-rotatably connected to the torsion spring and is locked in this engagement position.
  • the worm shaft With the help of the drive device, the worm shaft can rotate about the worm shaft axis and the worm wheel can thus be rotated together with the axial end of the torsion spring about a torsion axis running perpendicular to the worm shaft axis and thus tensioned.
  • a self-locking gear is provided at the same time. This reduces the risk of the uncontrolled release of spring energy. If the clamping tool with the worm shaft only after locking of the chuck is released from the worm wheel with respect to the torsion spring shaft, the spring energy stored in the torsion spring is available to support the opening movement of the door leaf.
  • the invention is based on the object of providing a clamping device with which doors can be mounted without problems even in cramped installation conditions.
  • this object is achieved by a development of the known clamping devices, which is essentially characterized in that the clamping tool itself has an output shaft of the self-locking gear.
  • the clamping tool can be aligned independently of the alignment of the torsion spring axis by providing a self-locking gear while observing the safety regulations, because it is no longer necessary to provide the self-locking gear by combining a gear element assigned to the clamping tool with a gear element assigned to the torsion spring . Rather, it is only necessary to bring the output shaft of the clamping tool, which can be detachably coupled to the torsion spring, in a suitable manner into a geared connection with one end of the torsion spring.
  • the output shaft of the clamping tool forms a drive shaft of an angular gear whose output shaft runs approximately parallel, in particular approximately coaxially, to the torsion axis and is expediently coupled to a torsion spring shaft around which the torsion spring runs, the alignment of the drive shaft of the self-locking gear can be designed variably.
  • the output shaft of the clamping tool is connected in a rotationally fixed manner to a bevel pinion arranged coaxially thereto.
  • the output shaft of the clamping tool can be non-rotatably connected to a worm wheel of a worm gear running around the output shaft axis of the clamping tool, while the drive shaft of the self-locking gear of the clamping tool can have a worm shaft whose worm shaft axis runs approximately perpendicular to the output shaft of the self-locking gear.
  • the clamping tool has a gear element, such as a bevel gear, at least partially accommodating a housing which is non-rotatably connected to an axial end of the torsion spring.
  • a gear element such as a bevel gear
  • This housing can have two flange regions which are arranged at an axial distance from one another with respect to the torsion axis and, after coupling to the torsion spring, are arranged in planes running approximately perpendicularly to the torsion spring axis, and a jacket region which connects the flange regions to one another and, after coupling to the torsion spring, partially encircles the torsion spring axis.
  • the tensioning tool has been coupled to the torsion spring, the area in which the bevel pinion meshes with the bevel gear can be covered by the housing. This further reduces the risk when installing goals.
  • a further simplification in the assembly of goals using clamping devices according to the invention results if the clamping tool, in particular the housing of the clamping tool, is assigned a holding mechanism, such as a snap mechanism, which, after being coupled to the torsion spring, allows the clamping tool to move in a direction parallel to the output shaft counteracts the direction in which the self-locking gear runs.
  • a holding mechanism such as a snap mechanism
  • the holding mechanism has two holding elements with opposite boundary surfaces, at least one of which is at least partially elastically deformable, the opposite boundary surfaces preferably having holding sections that are at a distance from one another that is less than the diameter of one of the the toothing opposite side of the bevel gear circumferential and the bevel gear in the axial direction widening collar.
  • the holding elements can first come into contact with the circumferential collar and then be pushed over the maximum diameter of the collar by overcoming a prestressing force of an elastically deformable holding element.
  • the distance between the opposing holding sections is reduced in such a way that movement of the clamping tool in a direction parallel to the output shaft of the self-locking gear is counteracted by the holding sections resting on the circumferential collar.
  • the securing of the clamping tool with respect to the torsion spring achieved in this way can be released in any rotational position of the bevel gear.
  • the sliding of the clamping tool onto the torsion spring shaft can be limited by a further holding or stop element of the clamping tool. All holding elements can be attached to the housing of the clamping tool, preferably in a detachable manner.
  • the clamping tool of a clamping device can have a locking device which is located between a Clamping tool with respect to a movement in a direction parallel to the output shaft securing locking position and a release position is adjustable.
  • the locking device can have a locking element, such as a locking pin, which engages in the locking position in a circumferential groove on the opposite side of the bevel gear and can be removed from the groove to move into the release position.
  • the holding mechanism can have insertion aids opposite the holding elements in a direction perpendicular to the output shaft, the distance between insertion aids and holding elements being greater than the axial thickness of the bevel gear in the region of the toothing.
  • a tensioning device can interact with a bevel gear fixedly mounted on the torsion spring shaft. After assembly, this bevel gear is to be regarded as a lost part that no longer fulfills any function during operation of the gate.
  • the tensioning device can have a bevel gear that can be divided in such a way that, after the torsion spring has been tensioned, it can be separated from the torsion spring in a radial direction with respect to the torsion spring axis.
  • the bevel gear of the tensioner can be used to tension a plurality of torsion springs on a corresponding plurality of gates.
  • the clamping device according to the invention can have a drive device that can expediently be operated electrically and is coupled to a drive shaft of the clamping tool.
  • the invention relates to the use of a clamping device according to the invention for installing a door with a torsion spring designed to support an opening movement of a door leaf of the door and running around a torsion spring shaft, in which the clamping tool of the clamping device is coupled to an axial end of the torsion spring, the torsion spring through Rotating the end of the torsion spring coupled to the tensioning tool relative to the torsion spring shaft about the torsion axis and then non-rotatably connected to the torsion spring shaft.
  • the axial end of the torsion spring can optionally be connected non-rotatably via a chuck to a bevel gear running around the torsion axis, and a bevel pinion connected non-rotatably to an output shaft of the self-locking gear of the clamping tool can be brought into engagement with the bevel gear for coupling the clamping tool to the torsion spring ,
  • the area in which the bevel pinion meshes with the bevel gear is covered by a housing of the clamping tool.
  • the clamping device 10 shown comprises a self-locking worm gear accommodated in a housing 12 with a worm shaft and a worm wheel accommodated in the housing, which is non-rotatably connected to an output shaft 14 of the worm gear.
  • the worm shaft can be rotated around the worm shaft axis using a hand drill, a cordless screwdriver or the like.
  • the rotary motion of the worm shaft is converted via the worm wheel into a rotary motion of the output shaft about an output shaft axis running approximately perpendicular to the axis of the worm shaft.
  • a bevel pinion 16 is non-rotatably mounted on the output shaft 14 of the worm gear 12 and can be rotated about the output shaft axis by rotating the output shaft 14 .
  • the housing has flange areas 20 and 22 running approximately parallel to one another, which are connected to one another via a jacket area 24 .
  • the flange areas 20 and 22 run approximately perpendicular to the worm shaft axis of the worm gear 12, while the casing area 24 runs approximately perpendicular to the flange areas 20 and 22 and parallel to the worm shaft axis of the worm gear 12.
  • Arranged on the flange area 20 of the housing 18 are holding elements 30 and 34 designed as "snappers" which serve to produce a non-positive connection of the housing and thus of the clamping tool as a whole to a torsion spring shaft.
  • a chuck 110 is pushed onto a torsion spring shaft 100, which can be connected in a rotationally fixed manner to an axial end of a torsion spring (not shown in the drawing) and can be locked in a rotationally fixed manner with respect to the torsion spring shaft.
  • the locking of the chuck 110 with respect to the torsion spring shaft 100 is first released.
  • the chuck 110 is non-rotatably connected to a bevel gear 112 running around the axis of the torsion spring shaft.
  • the in 1 The clamping tool shown is pushed onto bevel gear 112 in a direction perpendicular to the axis of the torsion spring shaft, so that bevel pinion 16 meshes with bevel gear 112 and the area in which bevel pinion 16 meshes with bevel gear 112 is covered by the housing of the clamping tool.
  • the position of the clamping tool 10 relative to the spring shaft 100 is locked in a direction perpendicular to the spring shaft axis with the aid of the snappers 30 and 34 .
  • a rotary movement of a drive device attached to the worm shaft of the worm gear 12 is first converted via the worm gear into a rotary movement of the bevel pinion 16 and then into a rotary movement of the bevel gear 112 with respect to the torsion shaft 100 .
  • the chuck 110 can be rotated and clamped about the torsion spring shaft axis 100 with the aid of the drive device together with an axial end of a torsion spring (not shown in the drawing). After tensioning the torsion spring, the chuck 110 can be locked in a rotationally fixed manner with respect to the torsion spring shaft 100 .
  • a bevel gear 112 designed to operate a clamping device according to the invention is shown.
  • the bevel gear On its side opposite the toothing 112a, the bevel gear has a circumferential collar 112b, with which it is axially expanded on the side opposite the toothing 112a.
  • the surrounding collar 112b points at the in 4 illustrated embodiment has a circumferential boundary surface in the shape of a circular cylinder shell.
  • the bevel gear 112 at the in 4 illustrated embodiment equipped on the opposite side of the toothing 112a with a circumferential groove 112c and axial projections 112d.
  • a non-rotatable connection to the chuck 110 can be established with the aid of the axial projections 112d.
  • the collar 112a and the circumferential groove 112c cooperate with the latches 30 and 34 as will be explained below.
  • Snappers 30 and 34 are mounted diametrically opposite one another on housing 24, with the facing boundary surfaces having retaining portions spaced apart prior to coupling to the torsion spring by a distance slightly less than the diameter of circumferential collar 112b of bevel gear 112. Der Retaining section 30a of snapper 30 is formed by an elastically deformable tongue. When the clamping tool is pushed onto the bevel gear 112, the holding section 30a is pushed radially outwards until the diameter of the collar 112b is overcome and then snaps back in the direction of its initial position. This counteracts a movement of the clamping tool in a direction running parallel to the output shaft of the self-locking gear.
  • the holding mechanism has a stop element 32 in the area of the bevel pinion 16, which comes into contact with the circumferential collar 112b when the clamping tool 10 is placed on the torsion spring shaft.
  • the stop element 32 is equipped with a locking device designed as a locking pin 32a. In 1 the locking pin 21a is shown in a release position in which it enables the clamping tool to be pushed onto the torsion spring shaft until the stop element 32 comes into contact with the circumferential collar 112b.
  • the locking pin 32a After being pushed onto the torsion spring shaft, the locking pin 32a can be inserted in the direction of its pin axis into the circumferential groove 112c of the bevel gear 112 in order to achieve additional protection of the clamping tool with regard to movement in a direction parallel to the output shaft 14.
  • the locking pin 32a is first pulled out of the groove 112c. Thereafter, the clamping tool 10 can be released from the torsion spring shaft. Additional insertion aids can be provided on the boundary surface of flange area 22 facing flange area 20, leaving a distance between the boundary surfaces of snappers 30 and 34 and the insertion aids that is approximately greater than the thickness of bevel gear 12 in the area of the toothing.
  • the bevel gear 112 is pushed onto the torsion spring shaft and cannot be removed from it again after the torsion spring has been tensioned.
  • the bevel gear may form part of the tensioning device and be divided in such a way that it can be released from the torsion spring shaft after tensioning the torsion spring and locking the chuck with respect to the torsion spring shaft. A possible division is in 4 indicated at 112e.
  • the worm gear 12 is a self-locking gear that prevents the spring energy stored in the torsion spring from being released before the tensioning tool is released from the torsion spring shaft.
  • the coupling of the clamping tool 10 to the clamping chuck 110 via a bevel gear facilitates the assembly of a gate using a clamping tool according to the invention because the teeth of the bevel pinion on the one hand and the bevel gear on the other hand easily find each other due to the conical angling.
  • assembly can be made easier if the drive shaft of the worm gear extends approximately parallel to the axis of the torsion spring shaft, the distance between the axis of the torsion spring shaft and the drive shaft of the worm gear being able to be adjusted by suitably positioning the bevel pinion on the output shaft so that a drive device can be connected to the drive shaft of the worm gear without any problems can be coupled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
EP22205009.8A 2021-12-15 2022-11-02 Dispositif de tensionnement Pending EP4198234A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202021106813.2U DE202021106813U1 (de) 2021-12-15 2021-12-15 Spannvorrichtung

Publications (1)

Publication Number Publication Date
EP4198234A1 true EP4198234A1 (fr) 2023-06-21

Family

ID=79686595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22205009.8A Pending EP4198234A1 (fr) 2021-12-15 2022-11-02 Dispositif de tensionnement

Country Status (2)

Country Link
EP (1) EP4198234A1 (fr)
DE (1) DE202021106813U1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341309C1 (de) * 1993-11-16 1995-03-30 Hoermann Kg Spanneinrichtung für die Gewichtsausgleichs-Torsionsfeder eines Torblattes
US7784521B2 (en) * 2004-02-26 2010-08-31 Overhead Door Corporation Tensioning tool for a counterbalance system for sectional doors
US20140265082A1 (en) * 2013-03-14 2014-09-18 Haldex Brake Products Corporation Overhead Door Torsion Spring Adjuster

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341309C1 (de) * 1993-11-16 1995-03-30 Hoermann Kg Spanneinrichtung für die Gewichtsausgleichs-Torsionsfeder eines Torblattes
US7784521B2 (en) * 2004-02-26 2010-08-31 Overhead Door Corporation Tensioning tool for a counterbalance system for sectional doors
US20140265082A1 (en) * 2013-03-14 2014-09-18 Haldex Brake Products Corporation Overhead Door Torsion Spring Adjuster

Also Published As

Publication number Publication date
DE202021106813U1 (de) 2022-01-03

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