EP0868587B1 - Sectional overhead door - Google Patents

Abstract

PCT No. PCT/DE96/02509 Sec. 371 Date Jul. 17, 1998 Sec. 102(e) Date Jul. 17, 1998 PCT Filed Dec. 23, 1996 PCT Pub. No. WO97/23700 PCT Pub. Date Jul. 3, 1997A sectioial overhead door is disclosed with a door leaf comprising several consecutive hinging panels (10, 10', 10'') which are guided in the known way by rollers (11) in horizontal tracks and in tracks (12, 12', 12'') joined to them to form a bow and are provided with a balancing device (15) in the form of approximately horizontal helical tension springs. The latter are designed to be space-saving, in particular with low drop heights, underneath the horizontal track sections extending into the building, such that on each of the outer side regions (27) of the horizontal track sections (12, 14) facing away from one another one or more helical tension spring units (16) are arranged approximately parallel to one another and one below the other. At least some of the helical tension spring units (16) consist of at least two coaxial helical springs (17, 18), the turns of which are mutually opposing and intersecting.

Description

The invention relates to a ceiling sectional door according to the preamble of appended claim 1, as is known from US-A-2 538 626.

Sectional gates are often preferred to overhead gates, because in terms of their space requirement when transitioning between Closed position and open position no significant room inside the building need and in terms of the required headroom above the closing gate opening is less demanding than a rolling gate, however is more demanding than a tilting or up-and-over door, the latter at the transition between the end positions space inside and possibly also needed outside the gate opening.

To get by with a low headroom you already have so-called Second guide rails for the rollers of the top one in the closed position   Panels are provided above the horizontal areas for the rest Guide rails serving as panel rolls run or from these to this extent be formed, facing one of the gate opening lowering end area. So far above this end range Weight balance shaft is arranged, you save through the lowered Course of the second rail guide space, but the space requirement is above the upper gate opening limit is still relatively high.

It has therefore already been proposed to replace a torsion spring shaft behind the fall of the gate opening to use tension spring devices that are above - CH-PS 343 624 - or below - US 2,271,309 - the horizontal section extend the guide rails, which means the space required for Ceiling of the building, especially the garage, grows out or the side Space below the horizontal guide sections is limited.  

From the above-mentioned US-A-25 38 626 is a ceiling sectional door in the claim Known type 1 known, which is more space-saving than the previously known known Ceiling sectional gates are designed, that each a tension spring on the left and is arranged on the outside right on the running rails. Because this coil spring but have to take up the entire door leaf weight, they have to with accordingly large diameter and accordingly take up a lot of space. In addition, there is no protection against spring breakage in the known overhead sectional door.

From US-A-4 658 468 a spring arrangement is known, which a certain Offers protection against spring breakage. However, this is the opposite coaxially coiled helical compression spring of a compression spring operated Door closer. Since such helical compression springs are easy to use under pressure Could jump side and in case of spring break under load an enormous explosive force for to produce protruding parts, the coaxially nested helical compression springs must be surrounded with an envelope, which may save space again restricted and is correspondingly expensive. In addition, such helical compression spring arrangements cannot be used with overhead sectional doors of the type in question here.  

The invention has for its object a ceiling link gate to provide the most space-saving and in particular gets along with low lintel heights, under the side in the Horizontal guide sections running into the building free space leaves and still offers a certain security in the event of spring breakage.

This is achieved according to the invention by a sectional ceiling door with the features of claim 1.

Advantageous embodiments of the invention are specified in the subclaims.

Due to the consistent arrangement of the springs on the outside of the rails and above all by arranging several spaced apart from one another in parallel arranged spring units with each other corresponding to a higher one Power requirement is achieved that the space above and below the horizontal Track sections from the weight compensation device   is kept free, so that the space requirement above these track sections towards the ceiling through the top edge of the top one in the closed position Panels along whose movement is determined and the space below it Guide rail sections remains largely free. The installation space requirement to the side is through the side of the horizontal guide rail sections arranged spring units relatively small.

According to the invention, the or a part of the spring units formed from at least two coaxially arranged coil springs, whose inner spring has a smaller spiral outer diameter than that Has inner spiral diameter of the respective outer spring. Such with their mutually facing spiral regions coaxially arranged springs can interlock with their spirals, which is why special for this case Spacing or spring guides may be required. After one A special feature is the coaxial arrangement Fedem with regard to their spiral course in a spring axis direction seen wound in opposite directions, so that the coil of the outer Fedem and cross that of the inner spring, whereby the coil is achieved one spring not in the gaps between two spiral turns of the other spring can intervene. In this way, the Fedem succeeds assign a relatively small distance between their coils. Of special The advantage is that the Fedem as mutually appropriate security Collection elements for fragments or swinging parts of the other Serve spring when broken; so there are no separate elements such as through ropes, outer telescopic coverings or the like, in order to avoid dangers arising from spring breakage.

Another advantage of this space-saving in terms of spring tension Construction of two or more coil springs coaxially one inside the other or encompassing each other is the setting of a certain spring characteristic a spring unit or the sum of the spring units on each side   the door leaf guidance through the possibility of arranging a large number weaker springs in a small space, so that by choosing the number of springs receives an opportunity to influence the overall force-spring characteristic, and additionally in that individual springs are different Assemble characteristics and can thus connect in parallel.

Another way of setting the right spring force on the ropes in Adaptation to the door leaf weight etc. is advantageously also provided by that the building-fixed end of the spring units in the direction of the spring axis is variably adjustable, for example by hanging a spring holder in a row of punched holes in the corresponding horizontal track section can be trained. Another, possibly additional Adjustment possibility results from a variable length adjustment of the stationary mounting of one end of the rope, again preferred and simple designed in the form of an opening row into which a holder, in particular a those that mean the difference in length of two parallel ropes in the same way Balances load distribution, can be used. Not only that Adjust the spring load, you can also make an adjustment especially during assembly to the given rope length and otherwise Catch signs of aging.

Basically, those with hook suspension can be used as tension springs be used; preferably blunt springs are used cooperate with holding elements as described in EP 0 288 061 B1 are.

The simple securing of the weight compensation device in the upstream sense the other corresponds to the risk of spring breakage Safety aspect, the cables that connect the spring leaf ends with the door leaf Connect the bottom edge of the bottom panel, each in the form of a double cable from two separate and parallel loads   To form individual ropes, each via correspondingly separate roller conveyors in the conversion area of the guide rail and in the deflection area on Spring attack are performed. These are in a particularly preferred embodiment Ropes kept constant in terms of their rope tension by the fact that they at one of their common ends on a weight balancer the possible differences in length between the two ropes, as they take up especially in operation, so that both ropes are even carry. Such a weight compensation device can be done in a simple manner be designed as a rocker that can be pivoted about an axis, on the in the rope direction seen on both sides of the axis are fixed training in which the Ropes running on both sides of the axis are included. For this it can be fastened by interlocking the thickened rope end and hook-in training, similar to a Bowden cable. Here are the Fixing training with the rope ends included therein preferably seen along the course of the rope in front of the axis, so that when there is a difference in length of the two ropes and a resulting pivoting of the rocker total pivoting angle possible under the rope tension difference is correspondingly larger than if the training courses regarding the Rope course at the same height as the axis or from the ropes seen would be arranged in front of the axis.

Figur 1

eine perspektivische Ansicht auf die Innenseite eines Deckengliedertorblattes mit der Laufschienenanordnung und angedeuteter Gewichtsausgleichseinrichtung;

Figur 2

eine Seitenansicht und eine Draufsicht auf den horizontalen und abgesenkten bzw. bogenförmigen Verlauf der Laufschieneneinrichtung vom Torblatt aus gesehen bzw. in Draufsicht;

Figur 3

eine Übersicht über unterschiedliche Ausgestaltungen einer oder mehrerer parallelgeschalteter Federeinheiten jeweils aus zwei koaxialen Federn sowie ein schematischer Teilschnitt durch diese Federanordnung;

Figur 4

eine vergrößerte Teildarstellung einer der Ausführungen aus Figur 3 in Seitenansicht und teilgeschnittener Draufsicht;

Figur 5

perspektivische Einzeldarstellungen aus Teilbereichen der Figur 1 in vergrößerter Darstellung.

The invention is explained in more detail with reference to the embodiment shown in the drawing, from which further advantageous features of the invention can be derived. Show it

Figure 1

a perspective view of the inside of a ceiling link door leaf with the track arrangement and indicated weight compensation device;

Figure 2

a side view and a plan view of the horizontal and lowered or arcuate course of the track device seen from the door leaf or in plan view;

Figure 3

an overview of different configurations of one or more parallel spring units each consisting of two coaxial springs and a schematic partial section through this spring arrangement;

Figure 4

an enlarged partial view of one of the embodiments of Figure 3 in side view and partially sectioned plan view;

Figure 5

perspective individual representations from partial areas of Figure 1 in an enlarged view.

The ceiling link gate shown schematically in FIG. 1 has a door leaf from a series of panels 10, the uppermost in the closed position 10 'and bottom 10 "differ from the other panels. With one exception of the top panel 10 'are the other panels in a known manner by means of rollers 11 in so-called first runners, each consisting of a horizontal one Section 12, an arcuate section 12 'and a vertical section 12 "on both sides of the door leaf, while the top panel 10 'with in its upper edge region 13 rollers 11 arranged on both sides in second Running rails each made up of a horizontal section 14, one for opening the gate seen lowered section 14 'and ending in an angled Section 14 "are included.

This version with second tracks is also known. The gate is with a weight compensation device 15, which is made of coil tension springs and assigned cables, as is also known in principle is such that there is one for each horizontal section of the running rails Tension spring extends parallel to it, which is held inside the building and facing the door leaf is connected to a pulley around which a rope is led around, one end in the lower edge area of the lowest panels and other end stationary - in a broader sense on frame-fixed Share - is set. The present embodiment shows the Arrangement of a tension spring device on each of the opposite   Side portions of the horizontal track sections 12 and 14 such that this coil spring device the space above and below the Assign practically no assigned running tracks. The side The space requirement of the coil spring devices is kept small, that these consist of coil spring units 16, of which - in Adaptation to the power requirement or the door leaf weight and Fall protection in the event of spring breakage - preferably several in parallel are arranged one below the other. Each spring unit 16 consists of two Individuals arranged coaxially one inside the other or around one another Screw tension springs, their inner 17 and their associated outer 18 in one and seen the same Federachsrichtung in different direction of rotation are coiled so that when viewed perpendicular to the direction of the spring axis, the coil of the two feathers cross at an acute angle, as shown in the figures 3 and 4 can be seen more precisely.

Each of one or more spring units 16 connected in parallel existing tension spring devices per horizontal track section are in the area fixed to the building, namely in the area facing away from the gate opening End region of the horizontal rails 12, 14 held - Figure 5 - and point at its summarized end of the gate opening a pulley in Form of a pair of rollers 25 or a roller with two parallel guide grooves on, over which two ropes 21 are guided, which run parallel to their respective Ends practically at the same facilities, namely on the one hand a common setting point 22 of known design in the lower Edge area 23 of the lowest panel 10 "in the closed position and stationary in the end area of the horizontal running rails 12, 14 near the gate opening, are set. The ropes between the pair of guide rollers 25 and the fixing point 22 on the door leaf side, in each case via a conversion roller 24 led to the change in position of the set point with the movement of the Door leaf opposite the constant spring axis direction of the spring units 16 balance.  

To clarify the arrangement of the spring units 16 in spatial assignment the horizontal running track sections 12, 14 are shown in FIG. 2 pointed out, in which the spring units 16 schematically consisting of two Coaxially arranged coil springs 17, 18 of opposite helix and the course of the guidance of the two parallel cables 21 per spring device 16 are reproduced. From these figures - side view schematized in the middle - is the shape or spatial allocation between the horizontal Track sections 12 and 14 and a coil spring device can be seen from two spring units 16 arranged one below the other. Of the by interrupting the side view in the horizontal track area obtained representation space shows a section perpendicular to the longitudinal direction the running rails. Furthermore, from Figure 2 - side view - inside the building End region of the horizontal track section 14 a punch hole row 40 can be seen that with one at the inside of the building of the spring units 16 attached anchor 37 cooperates, as is still based on the Figure 5 is explained.

FIG. 3 shows, in a kind of exploded view, three embodiments of tension spring devices, as on the side areas of the horizontal track sections 12 and 14 are arranged, in different Designs, namely with a single spring unit 16, with two and with three spring units 16 arranged parallel to one another, each of which consists of two coaxially arranged springs 17 and 18 is formed, the longitudinal central region is shown abbreviated. The respective version with one, two or three spring units 16 are assigned on both sides to carriers 30 with roller holders 35, 36 and anchor 37 reproduced with flags 38, 39, depending on the number provided Spring units 16 by a corresponding number of holding elements 31, 31 ', 31 "are adapted, as shown in the figure without reveals more. Among the different versions in side view a corresponding top view is shown. The connections of the Springs of the spring units on the holding elements is related to Figure 4 explained in more detail.  

Figure 3 below shows a section of the longitudinal course of a spring unit of two coaxial springs, namely an inner spring 17 and one of these surrounding outer spring 18. As indicated, the two springs are 17th and 18 in one and the same direction of the spring axis 29 in opposite directions Direction circumferentially, i.e. the spring coils 20 of the two springs 17 and 18 cross each other at an acute angle. The inner spring 17 has a smaller one Outer diameter Da than the inner diameter Di of the outer spring 18 is tall. This allows the springs 17, 18 to move independently of one another, without spiral sections of one spring at intervals between adjacent ones The spiral sections of the other spring engage, although the Diameter difference Di - Because it can be kept small. To say a holiday between adjacent areas of the spring coils 20, a low-friction umbrella can be provided in these sections, for example by limited to the neighboring areas of the helix Cross-section of trough-shaped strapping of the helix or through its wrapping from a suitably insensitive to frictional stress Plastic.

FIG. 4 shows the example of the pair of deflecting rollers 25 assigned End area of a tension coil device consisting of three spring units 16 the connection of the springs 17, 18 of these units via a summarizing Carrier 30. The flat carrier 30 is with three spring units facing striving holding elements 31, 31 'and 31 "provided in lie on one level and each have a narrower holding section 32 and one between this broader holding section 33 and the carrier 30 exhibit. How to recognize both side view and top view in Figure 4 let, the outer spring 18 of the spring unit 16 in question is the has a larger diameter than the inner spring 17, up to the close range of the carrier 30 pushed onto the wider holding section 33 in such a way that the slid-on helical region 19 barbed projections 34th engages behind on the flanks 47 of the holding section 33 and is thus pushed on but can be secured against being pulled off. In the same way the inner spring 17 of smaller diameter on the further against it   jumping narrower holding section 32 of the associated holding element postponed and secured, the 180 ° between the flank shape of projections 34 in both sections 32 and 33 and recesses 48 reveals that the outer spring 18 and the inner Spring 17 have opposite winding sense.

On the support area facing away from the holding elements 31 ... is a roll holder 35 from a cheek bearing integral with the carrier 30 and a Camp counterpart 36 formed, the latter by hanging with the Beam 30 is connected as shown in the top view; the two parts 35 and 36 are held together by a hollow rivet, which is also the axis for represents the deflection roller 25 formed as a pair of deflection rollers.

FIG. 5 shows a series of individual representations from FIG. 1 in enlarged form Representation, namely Figure 5a the formation of variable length building-side definition of the symbolically represented by a spring Tension spring device consisting of one or more parallel to each other arranged spring units 16, at the end of the building inside an anchor 37 is connected as shown in Figure 3. Of the Anchor 37 can optionally be inserted into one of the holes in a row of punched holes 40, with a flag 39 striving in the direction of the spring, which at Insertion in a punch hole under the action of the spring 16 in a rear grip device with the wall of the horizontal track section 14. One in In the opposite direction of the flag 39, the flag 38 is designed to brace the spring is drilled with a hole that corresponds to that of the first flag 39 penetrated punch hole adjacent punch hole to cover comes when the grip behind the first flag has taken 39 place. Through this punch hole and the hole in the flag 38 is a Safety bolt guided; these processes are in Figures 5a, 5b and 5c reproduced. The handling of the anchor 37 in the aforementioned A bracket 46 formed on this serves in a manner.  

5d shows the stationary mounting of the ends of the two on the gate opening side parallel ropes 21 per door leaf side. The thickened rope ends 44 are included in suspension training 43, preferably in the manner of a Bowden fastener, in which position under the force of the associated Deflection roller 25 engaging spring units 16 are held. This as Fixing configurations designed for hangings are on a rocker 41 provided, which is pivotable about an axis 42, so that differences in length between the two ropes 21 by pivoting the rocker 41 with the Result equal load distribution can be balanced. In the interest of one great compensation are the training courses 43 on both sides of the Axle 42 is provided further apart from the deflection roller pair 25 than the axis 42. In the sense of a variable-length training of these fixed Bracket is the rocker 41 in an opening extending in the longitudinal direction the track section 14 extending opening row 45 optionally can be used so that adjustments with regard to the spring force to be set, adaptation to given rope lengths and age-related changes of these values becomes possible.

The remaining Figures 5e and 5f show the arrangement of the loops trained other ends of the ropes 21 at a fixing point 22 in Lower edge area 23 of the lowest panel 10 "as well as position and function the converter roller 24 in the area of the barrel section near the building 14 or 14 '.  

REFERENCE SIGN LIST

10, 10 ', 10 "

Door leaf with the top and bottom panel

11

roll

12, 12 ', 12 "

first tracks - horizontal, arched, vertical section

13

Top edge area of the top panel

14, 14 ', 14 "

second rails - horizontal, lowered, angled Sections

15

Weight balancing device

16

Tension spring unit = spring unit

17th

inner spring

18th

outer spring

19th

slipped helical area

20th

Feather coil

21

Ropes

22

Setpoints

23

lower edge area of the lower panel

24th

Conversion rollers

25th

Pulley pairs

26

stationary mounting of the ropes

27

Side areas of the horizontal track sections

28

definition of the spring units on the building side

29

Spring axle

30th

carrier

31, 31 ', 31 "

Holding elements

32

Holding sections - narrower

33

Holding sections - wider

34

Ledges

35

Reel seat

36

Roll holder - counterpart

37

anchor

38

longer flag

39

shorter flag

40

Row of punch holes  

41

Seesaw

42

axis

43

Fixed training = suspension training

44

thickened rope ends

45

Row of openings

46

Suspension bracket

47

Flanks

48

Indentations

Tue

Inner spiral diameter

There

Outer spiral diameter

Claims (9)

1. Sectional up-and-over door having a door leaf comprising a plurality of panels (10, 10', 10") hinged successively to one another in the direction of movement, which are guided by laterally mounted rollers (11) in first lateral guide rails (12, 12', 12") in a substantially vertical direction (12") and in a horizontal direction (12) connected thereto by an arc (12'), with the exception of the panel (10') which is at the top in the closed position, which engages with its rollers, which are mounted in the upper edge region (13) in this position, in second guide rails (14, 14', 14") which are arranged parallel to and above the associated horizontal sections (12) of the first guide rails - apart from one section (14") facing the door openings, which is optionally lowered (14') and then bent - and having a weight compensating device (15) in the form of helical tension springs extending substantially horizontally which are fixed at one end in a part of the building away from the door opening (28) and are connected at the other end, close to the door opening, to guide rollers (25) over which cables (21) secured at one end (26) are looped to run to fixing points (22) on both sides of the lower edge region (23) of the panel (10") which is at the bottom in the closed position, characterised in that at each of the outer side areas (27), remote from each other, of the horizontal guide rail sections (12, 14), there are one or more helical tension spring devices (16) arranged below one another and extending substantially parallel to one another, and in that the spring units (16) or some of the spring units (16) consist of at least two coaxially arranged helical springs (17, 18) the inner spring (17) of which has an outer coil diameter (Da) which is smaller than the inner coil diameter (Di) of the outer spring (18) and one spring of which, viewed in the same axial direction of the spring, winds to the left while the other spring thereof winds to the right, so that the coils (20) of the two springs (17, 18) intersect.
2. Door according to claim 1, characterised in that the springs (17, 18) are of a low-friction construction at least on their coil surfaces facing one another.
3. Door according to claim 1, characterised in that the spring coils (20) are provided with a plastics coating.
4. Door according to one of claims 1 to 3, characterised in that the ends of the two coaxial springs (17, 18) forming a spring unit (16) are constructed to end in a coil at least at one common end and are pushed onto a common retaining element (31) which has a first narrower retaining section (32) facing the springs, for receiving the inner spring (17) and adjacent thereto a broader retaining section (33), facing away from the inner spring, for receiving the outer spring (18), said retaining sections being provided on their flanks (47) with barb-like projections (34) which engage behind the coils (19) of the springs (17, 18) pushed onto them and are secured against being pulled off, there being as many retaining elements (31, 31', 32") formed on a common carrier (30) as there are spring units (16) to be attached.
5. Door according to claim 4, characterised in that the retaining element (31, 31', 32") is constructed, in its region remote from the retaining sections (32, 33), as a roller holder (35) for the guide roller (25) or as an anchor (37) for fixing to the associated guide rail (12).
6. Door according to one of claims 1 to 5,
   characterised in that the guide rollers (25) are constructed as pairs of rollers each of which receives one of two parallel cables (21) which are fixed to a cable tension equilibrating device (41) by means of the or each spring unit (16) engaging on the pair of rollers (25), under parallel loading at a common end, preferably by the cable ends which are fixedly secured (26).
7. Door according to claim 6, characterised in that the equilibrating device is constructed as a rocker arm (41) which is mounted in a central region facing the pair of guide rollers (25) so as to be pivotable about a fixed spindle (42) and which has a fixing structure (43) for one of the cable ends on each side of the spindle - preferably a fixing of the suspension kind (43) such as a Bowden cable fixing for a thickened cable end (44) - in particular, further away from the pair of guide rollers (25) than the spindle (42).
8. Door according to one of claims 1 to 7, characterised in that the fixed mounting (26) of the cable ends is constructed to be variable in length in the axial direction of the spring, particularly on the associated guide rail (14), preferably in the form of a row of punched holes (40) extending in the longitudinal direction of the rail, optionally for selectively securing the spindle (42) of the rocker arm (41).
9. Door according to one of claims 1 to 8, characterised in that the fixing (28) of the spring units (25) to the building is variable in length in the axial direction of the spring, particularly on the associated guide rail (14), preferably in the form of a row of openings (45) extending in the longitudinal direction of the rail, into which an anchor (37) at the spring end can be inserted as desired, preferably with two tabs (38, 39) tending away from each other in the axial direction of the spring, the one remote from the spring unit (16) being longer than the other and/or the one remote from the spring unit (16) having a borehole.