DE8714135U1 - rolling gate - Google Patents

Description

i i i < I I ' I I II < · ·· POLLMEIER PATENT ATTORNEYS Ink pen'·" SIZE · Description rolling gate

MEY

For roller doors with a flexible door leaf and a winding roller for the door leaf that is mounted so that it can rotate above the door opening, a weight compensation for the door leaf and a pulling device that engages the lower end of the door leaf and tightens the door leaf must be provided.

A weight balance for the gate can be achieved in the simplest way by connecting a drum to the winding roller on at least one or both sides in a rotationally fixed manner, onto or from which a tension element winds up or unwinds in the opposite direction to the gate leaf on the winding roller, which tension element is loaded with the counterweight to the gate leaf. The counterweight can also be attached to the tension element by means of a loose roller and the end of the tension element can be connected to the lintel of the gate opening (CH-PS 89 785).

In order to tighten the door leaf, it is known to guide the tension member, to which the counterweight is attached by means of a loose roller, over a deflection roller mounted on the lintel of the door opening and another deflection roller mounted on the floor of the door opening and to connect it to the door leaf or a strip stiffening the lower edge of the door leaf. The weight attached to the loose roller acts half as a tensile force tightening the door leaf via the strands of the tension member running off the loose roller and thus, via the winding roller for the door leaf, with a torque dependent on the respective winding radius _{, counteracts} the torque which is exerted by the counterweight via the tension member with the respective winding radius on the drum of the tension member (DE-PS 23 41 328). This makes balancing the weight of the door leaf difficult. According to another state of the art (DE-GS 82 06 622),

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PATENT ATTORNEYS «iHGMWEFifCH ⁵ « iblÖLLER·*'GROSSE ' POLLMElEfi · MEY

Therefore, an additional spring is provided in the winding roller, which is tensioned as the door leaf unwinds and which should also act as a fall protection for the door leaf. However, the arrangement of the spring in the winding roller is structurally complex and makes maintenance difficult.

In the further development (DE-PS 32 45 009, DE-PS 33 45 016) «4&eegr;&Lgr; Aio. Caulohtcaucalnlohisvorrlchttlno and the device for

Tightening of the door leaf without reducing the construction effort and facilitating maintenance C ^ »

The invention aims to create a robust device that is easy to maintain by separating the functions of weight compensation and tightening the door leaf. Based on the state of the art given by CH-PS 89 785, the invention provides that, in addition to a drum connected to the winding roller for the door leaf in a rotationally fixed manner, on or from which a flexible traction element (belt, rope, chain) loaded with a counterweight to compensate for the weight of the door leaf winds up or unwinds in a counter-rotating manner to the winding roller, at least one second drum is connected to the winding roller in a rotationally fixed manner, on or from which a flexible traction element (belt, rope, chain) winds up or unwinds in a counter-rotating manner to the door leaf, whereby this traction element is guided around a deflection roller mounted stationary on the floor of the door opening and is connected to the door leaf or to a strip stiffening the lower edge of the door leaf, and that a tension roller is provided which presses with a transverse force against the strand of the traction element running between the drum and the deflection roller. It is advantageous if on both sides of the winding roller there is a drum for a traction element loaded with a counterweight and for a

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PATENT ATTORNEYS 'hg^MERICH'"'ROLLER"GROSSE ' POLLMElER · MEY

A tensioning element cooperating with a tension pulley is provided.

In order to be able to bring the tension roller or tension rollers into an optimal operating position, according to a further feature of the invention, the drum or drums for a traction element that interacts with a tension roller are detachably connected to the winding roller and thus adjustable in the mutual rotational position of the drum or drums to the winding roller. For this purpose, as is further provided according to the invention, the drum or each of these drums can be mounted loosely rotatably on the shaft ", to the winding roller, in which case a ratchet wheel

is connected to this shaft in a rotationally fixed manner and the driving of the

$ Drum through the ratchet wheel over a bolt on a

The ratchet wheel can be kept so wide in its axial dimension that, according to a further feature of the invention, in the second axially offset section thus created, the ratchet wheel can interact with a second ratchet that can be pivoted about a bolt that is fixed to the gate frame, whereby this ratchet is connected to a device that releases it but engages it in the event of a fault.

An advantageous arrangement of the tension roller is obtained in that, according to a further feature of the invention , it is mounted on the free end of a lever, about the bearing axis of which the deflection roller for the tension member is rotatable and that a tension member guided over deflection rollers and pulled by a spring or a weight is hinged to the free end of the lever.

An embodiment of the invention is shown in the drawings.

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Fig. 1 shows a perspective view of the essential components of a roller shutter according to the invention/ which is shown on a larger scale in a perspective exploded view in

Fig. 2A in one and in

Fig. 2B is shown in the other half.

Fig. 3 shows a detail in section along the section line III-III shown in Fig. 2A.

Fig. 4 shows a horizontal section through a goal post (left goal post, according to Figs. 1 and 2A).

As shown in particular in Figs. 1, ?A and 2B, the roller door consists of a windable door leaf 1, in particular made of elastic, possibly transparent plastic, which can be unwound to close a door opening (not shown). Above the door opening, a winding roller 2 for the door leaf 1 is rotatably mounted, for which purpose a shaft 3 connected in a rotationally fixed manner to the winding roller 2 can be rotated in bearing blocks 4 which are fastened to a door frame (not shown). To wind up and unwind the door leaf 1, a motor 5 is fastened to the door frame, which drives the winding roller 2 with the sprocket 6 fastened to its output shaft, a chain and a sprocket 8 connected in a rotationally fixed manner to the shaft 3. Furthermore, drums 9a and 9b are connected in a rotationally fixed manner to the shaft 3 and thus to the winding roller 2. Belts 10a and 10b are wound on the drums 9a and 9b in the opposite direction to the material web 1 on the winding roller 2, with counterweights 11a and 11b attached to their ends

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PATENT ATTORNEYS · VlBNiM^RICl+ '- MÖLLER* ».'grJoSSE · POLLMEIER ■ MEY

The base diameters of the winding roller 2 and the drums 9a and 9b, the thickness of the material web 1 and the belts fOa and 10b and the counterweights 11a and 11b are adjusted so that the counterweights 11a and 11b largely maintain the balance in every operating position of the unwinding material web 1.

The door leaf 1 is provided with a strip 12 on its lower edge to reinforce it. To guide the door leaf 1, the vertical gate posts are formed - as shown in Fig. 4 for the left gate post - from a housing part 14 anchored in the masonry 13 and a second housing part 15 connected to it in a hinge-like manner and supplementing the housing part 14 to form a box profile, with the housing parts 14 and 15 forming a guide slot for the door leaf 1 between profile strips 16 on the housing part 14 and 17 on the housing part 15. Two guide rollers 18 are inserted one above the other in windows in the reinforcing strip 12, the axes of which are held in the windows of the reinforcing strip 12 by tabs (the illustration has been omitted). These guide rollers 18 run between the profile strips 16 and 17. Brush belts 19, which are attached to the profile strips 16 and 17, serve to guide and in particular to seal the door leaf 1 between the profile strips 16 and 17.

In order to keep the door leaf 1 taut, belts 20a and 20b are provided which pull the door leaf 1 downwards over the stiffening strip 12, to which the belts 20a and 20b are connected. The belts 20a and 20b are wound up or unwound by drums 21a and 21b at approximately the same rate as the door leaf 1 moves downwards or upwards. The path distances resulting from the opposing changes in the winding diameters for the door leaf 1 on the winding roller 2 and the belts 20a and 20b on the drums 21a and 21b are determined by

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Tension rollers 22a and 22b are balanced, which exert a transverse force on the belts 20a and 20b and at the same time generate the tensile force in the belts 20a and 20b to tighten the door leaf.

The tension rollers 22a and 22b are mounted on the free ends of levers 23 so that they can rotate about axes 24. The levers 23 can be pivoted about axes 25 which are held by bearing blocks 26. Deflection rollers 27 for the belts 20a and 20b can also be rotated on the axes 25, and from the deflection rollers 27 the strands 20a1 and 20b1 run to the stiffening strip 12 of the door leaf 1 and the strands 20a2 and 20b2 run to the drums 21a and 21b past the tension rollers 22a and 22b. Fork pieces 29 with legs 28 enclose the axes 24 of the tension rollers 22a and 22b. Ropes 30 fastened in the fork pieces 29 run over deflection rollers 31 and 32 and are connected at their other ends to tension springs 33, which produce the transverse force to be exerted by the tension rollers 22a and 22b on the strands 20a2 and 20b2 of the belts 20a and 20b. The tension springs 33 are provided with adjusting nuts (not shown) for adjusting their tension force and are suspended from brackets (also not shown) on the vertical gate posts. The deflection rollers 31 can be rotated about axes 34 in bearing blocks 35 and the deflection rollers 32 can be rotated about axes 36 in the bearing blocks 26.

The optimal setting of the tension rollers 22a and 22b with regard to their working range when compensating the path difference between the door leaf 1 and the belts 20a and 20b is made possible by the fact that the drums 21a and 21b can be set and locked in their rotational position relative to the winding roller 2. This is achieved by the fact that the drums 21a and 21b

PATENT ATTORNEYS -«EMMERICH^MÖLLER··· GROSSE ■ POLLMEIER ■ MEY

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are rotatably mounted on the shaft 3, while ratchet wheels 37 are connected to the shaft .3 in a rotationally fixed manner. The drums 21a and 21b are provided with bolts 38 on the front wall facing the ratchet wheels and pawls 39 which are pivotably mounted on the bolts 38 and are pressed against the ratchet wheels by springs (not shown) allow the adjustment of the drums 21a and 21b to the winding roller 2.

The ratchet wheels 37 have an axial dimension such that in a second track next to the pawls 37, pawls 40 can be arranged, which are pivotably mounted in bearing blocks 41 attached to the vertical gate posts. A ventilation device 42 in a bearing block 43 holds the pawls 40 in the released position and, in the event of a fault, causes the pawls 40 to engage via a control system (not shown), whereby any further downward movement of the gate leaf 1 is prevented.

Claims (1)

PATENT ATTORNEYS HEMMErVCH · MÜLLER · GROSSE · POLLMEIER · MEY Protection claims 1. Rolling door with a flexible door leaf that can be wound up on a winding roller that is rotatably mounted above the door opening and to which at least one drum is connected in a rotationally fixed manner, onto or from which a flexible tension element (belt, rope, chain) loaded with a counterweight to compensate for the weight of the door leaf is wound up or unwound on or from the winding roller in the opposite direction to the door leaf, characterized in that Q that at least one second drum (21a, 21b) is rotationally fixed to the winding roller (2) is connected, onto or from which a flexible traction element (belt, rope, chain) (20a, 20b) is also wound up or unwound in the opposite direction to the door leaf (1), that this traction element (20a, 20b) is guided around a deflection roller (27) mounted stationary on the floor of the door opening and is connected to the door leaf (1) or to a strip (12) stiffening the lower edge of the door leaf, and that a tension roller (22a, 22b) is provided which presses with a transverse force against the strand 20a2, 20b2) of the traction element (20a, 20b) running between the drum (21a, 21b) and the deflection roller (27). ( 2. Rolling door according to claim 1 ,
characterized, that on both sides of the winding roller (2) there is a drum (9a, 9b) for a traction element (10a, 10b) loaded with a counterweight (11a, 11b) and (21a, 21b) for a traction element (20, 20b) interacting with a tension roller (22a, 22b). EMMER y y PATENT ATTORNEYS HEMMERICH · MÖLLER · GROSSE · POLLMEIER · MEY 3. Rolling shutter according to claim 1 or 2, characterized in. that the drum or drums (21a, 21b) for a pulling device (20a, 20b) cooperating with a tension roller (22a, 22b) is or are detachably connected to the winding roller (2) and thus adjustable in the mutual rotational position of the drum or drums (21a, 21b) to the winding roller (2). 4. Roller shutter according to claim 3, characterized in that that the drum or each of these drums (21a, 21b) is mounted so as to be loosely rotatable on the shaft (3) to the winding roller (2), while a ratchet wheel (37) is connected to this shaft (3) in a rotationally fixed manner and the drum (21a, 21b) is driven by the ratchet wheel (37) via a pawl (39) which can be pivoted about a bolt (38) on a drum front wall. 5. Roller shutter according to claim 4, characterized in that the ratchet wheel (37) is provided in a second axially offset section with a second pawl (40) which can be pivoted about a bolt (41) fixed to the gate frame ( ) cooperates, wherein this pawl (40) is connected to a device (42) which releases it but engages in the event of a fault. PATENT ATTORNEYS HEMMERICH · MÜLLER · ÖHöSSE · POLLMEIER « MEY 10 Roller shutter according to one of the preceding claims, characterized in. that the tension roller (22a, 22b) is mounted on the strand (20a2, 20b2) of a traction element (20a, 20b) at the free end of a lever (23) / around whose position axis (25) the deflection roller (27) for the traction element (20a, 20b) can be rotated and / that a traction element (30) guided over deflection rollers (31/ 32) and pulled by a spring (33) or a weight is articulated to the free end of the lever (23). 9 Ψ Ψ