EP0220742A2 - Porte relevable à l'horizontale équilibrée par un ressort de traction en spirale qui est traversé par un élément de sécurité - Google Patents

Porte relevable à l'horizontale équilibrée par un ressort de traction en spirale qui est traversé par un élément de sécurité Download PDF

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Publication number
EP0220742A2
EP0220742A2 EP86115093A EP86115093A EP0220742A2 EP 0220742 A2 EP0220742 A2 EP 0220742A2 EP 86115093 A EP86115093 A EP 86115093A EP 86115093 A EP86115093 A EP 86115093A EP 0220742 A2 EP0220742 A2 EP 0220742A2
Authority
EP
European Patent Office
Prior art keywords
loop
spring
hook
protective element
overhead door
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.)
Withdrawn
Application number
EP86115093A
Other languages
German (de)
English (en)
Other versions
EP0220742A3 (fr
Inventor
Michael Dipl.-Ing. Hörmann
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
Hoermann KG Amshausen
Original Assignee
Hoermann KG Brockhagen
Hoermann KG Amshausen
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, Hoermann KG Amshausen filed Critical Hoermann KG Brockhagen
Publication of EP0220742A2 publication Critical patent/EP0220742A2/fr
Publication of EP0220742A3 publication Critical patent/EP0220742A3/fr
Withdrawn legal-status Critical Current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
    • E05D13/1207—Counterbalance devices with springs with tension springs
    • E05D13/1223—Spring safety devices
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/40—Suspension arrangements for wings supported on arms movable in vertical planes
    • E05D15/42—Suspension arrangements for wings supported on arms movable in vertical planes with pivoted arms and horizontally-sliding guides
    • E05D15/425—Suspension arrangements for wings supported on arms movable in vertical planes with pivoted arms and horizontally-sliding guides specially adapted for overhead wings
    • 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
    • E05D13/1207—Counterbalance devices with springs with tension springs
    • E05D13/1215—Counterbalance devices with springs with tension 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
    • 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 protective element for preventing damage in the event of breakage of a counterbalance tension spring of an overhead door with the features of the preamble of claim 1.
  • the coil tension springs are stretched over the handlebars guiding the door leaf in the course of the movement of the door leaf from the open to the closed position over a relatively small path and are strongly preloaded. If such a tension spring breaks, which can happen primarily under its maximum expansion load, the spring parts hit their mounts with very considerable energy due to the sudden release of the large force stored in the spring and move uncontrollably outside the normal spring travel. This creates a significant risk of injury and damage. Such large deformations can occur on the door structure that restoration is not possible only by exchanging the tension springs and, if applicable, their immediate holding parts.
  • a known protective element of this type - DE-AS 29 23 327 - consists of two parts which are longitudinally displaceable to one another in order to be able to follow the spring travel in the course of the change in the operating length of the spring.
  • the lower, attached to the side frame spring connection end associated with the end of the protective element is also fixed to the spring-holding spring hook and can have a rod-like character
  • the upper connection end of the spring arranged second part of the protective element is designed as a band that an intermediate element in the form of a spring holding band having a number of elongated holes is fixed in one of the elongated holes. Due to the band structure or its definition in one of the elongated holes of the spring retaining band and the orientation of the hook-shaped spring connection end, which is also suspended in one of the elongated holes, the band-shaped part of the protective element is fastened in an elongated hole that lies below the suspension elongated hole of the spring .
  • a known weight compensation coil spring device of the type mentioned with hook ends bent from the spring wire in a hook-shaped manner - DE-GM 81 35 815 - is provided with a protective element arranged in a manner encompassing the interior of the spring coils, comprising a one-piece, resilient rod projecting beyond the upwardly directed spring end , the projecting end of which is guided so as to be longitudinally displaceable in the area of the connection between the helical tension spring and the pivoting lever.
  • This leadership of the upper rod end can be done simply by taking in the frame formed by the bearing block, the two parallel short lever arms and the connecting member located between their free ends or by a special guide opening which is formed on the connecting member and which projects upwards End portion of the rod slidably receives.
  • the rod At its lower end, the rod is bent at a right angle and inserted into a hole in the spring hook holding the lower connection end of the spring and held in this spatial position by a type of union lock.
  • a type of union lock it is a question of the magnitude of the tensile or dimensional stability of this bend, whether the protective element can fulfill its task or not.
  • the invention has for its object to provide a backup for a weight compensation coil tension spring overhead doors of the type in question, the protective element with a minimum amount of material according to quantity and quality offers maximum security.
  • the protective element designed according to the invention is loop-shaped, so that there are no straight or curved end regions that could be pulled out of the holder on the connecting element or on the intermediate element or a holding element or holding element attached to it by deformation. In the direction of this tensile load occurring when the spring breaks, there is a form-fit between the loop-shaped protective element and the respective point of attack above the upper end of the spring, which means that the holder can only be lost by destroying the tensile element.
  • the fixing of the lower end region of the protective element to the spring hook is also fundamentally positive, whereby the shape of a loop or the shape of two eyelets can be provided, which are formed in the lower end region of the longitudinal longitudinal webs which are separated from one another in this case.
  • the protective element according to the invention can consist of a loop which extends through the entire length of the spring, from the spring hook holding the lower connection end of the spring to beyond the upper connection end of the spring.
  • the holder of the protective element must be designed to be longitudinally displaceable in order to take account of the change in length of the spring during operation.
  • the retaining design is designed in such a way that the loop shape there changes into a form-fitting attack on the respective holder when tensile load is applied downwards, be it the connecting link or a retaining link which is attached to the intermediate link, which is designed in particular as an elongated hole band the link extends to the upper terminal end of the spring.
  • the protective element designed according to the invention can also consist of several, above all two, loop parts which extend through one another in the manner of particularly elongated chain links.
  • the upper loop part can include the connecting link with its retaining design, but it can also be guided through an elongated hole opening of the intermediate link above the hooking of the hook-shaped upper connecting end of the spring or else can be fixed to the intermediate link by a special retaining link.
  • the lower loop can in turn be loop-shaped in its lower connection area on the spring hooks or fixed with eyelets formed on the freely running leg webs, as was already mentioned above in connection with the one-piece design of the protective element.
  • the protective element can only be attached in its one-piece form, or also from two or more loop parts, consisting of a closed loop shape, even if the spring has already been installed; this also applies, of course, to retrofitting.
  • the lower end region of the protective element - be it in the form of a loop or through eyelets formed on the ends of the loop webs - is lifted away from the frame by slightly bending the spring hook from its one-sided resilient contact, so that the loop shape or the eyelets fall into the area of the fixing design of the spring hook can get, which also receives the lower hook-shaped connection end of the spring.
  • a longitudinally ver sliding definition of the training in the upper area of the loop on the intermediate link In one piece, a longitudinally ver sliding definition of the training in the upper area of the loop on the intermediate link. The above applies to training with a lower and an upper loop, with the difference that the upper loop is fixed to the intermediate link via a holding part.
  • a loop shape can also be selected that is open for assembly purposes. This comes into consideration, for example, if the one-piece protective element is to be arranged around the connecting member between the short lever arms of the pivot lever. This applies in the same way to the upper loop part of a multi-part protective element. Such an upper loop part can also be inserted into one of the elongated holes of the intermediate part in such a divided design. Insofar as the protective element is assembled in the factory or under similar conditions, the loop which is initially produced open can be closed after assembly, for example by welding.
  • a two-part loop design - be it in one-piece or multi-part design of the protective element - can be joined together to form a closed loop shape by a locking part.
  • This closing part is to be designed with a positive fit at least in the longitudinal direction of the train, for example by means of a bolt-shaped connecting element penetrating through the two eyelets to be joined at the loop web ends.
  • the protective element according to the invention is basically held in its upper end region, that is to say with its retaining design, above the particularly hook-shaped upper connection end of the spring.
  • the protective element according to the invention consists of simple wire, the dimensions of which depend on its tensile strength. It should be borne in mind that even very thin wire responds in a durable manner, particularly to sudden tensile loads. This is also due to its plastic deformability, which also absorbs the impact energy of the breaking spring. Such a wire is relatively thin and cheap, since there are no special requirements for its quality.
  • FIGS. 1 to 4 show a schematically reproduced single-leaf overhead door, designated overall by 1, in the indicated state of installation.
  • a frame 3 is assigned to the door leaf 2, which is moveably guided over the head and is mounted in a known manner in the edge region of the wall opening to be closed by the door.
  • the two-armed swivel lever has a short lever arm 7, which is assigned a correspondingly short second lever arm 18 running parallel.
  • the lower inner edge region is articulated the door leaf 2, which is provided in its upper inner edge region with rollers 10 which can roll in guide rails 11.
  • the Guide rails 11 extend from the frame frame 3 horizontally into the space to be locked.
  • the two short parallel lever arms 7 and 8 are connected via the axis of the bearing block 6 on the one hand and with regard to their free ends with the aid of a connecting member 12 to form a rigid frame structure.
  • the short lever arms 7 and 8 move with respect to their free ends or the connecting member 12 from an upward position into one which is directed downward toward the floor, whereby an approximately semicircular arc is traversed, which is arched into the interior of the room to be locked.
  • the free end of the long lever arm 9 moves in the course of this transfer of the door leaf 2 from a position directed towards the floor into one in which it supports the lower edge of the door leaf 2 in its horizontal opening position upwards .
  • the path of the connecting member 12 thus describes the path of the lower edge region of the door leaf 2 in a shortened section shape and transmits this path-dependent position via an intermediate member 13 to a coil tension spring 14 which, with the intermediate member designed as a spring retaining strap, is bent over its upper part, which is then bent onto the screw spiral hook-shaped connection end 15 is connected.
  • the helical spring coil is bent in a hook-shaped manner at the lower end of the spring 14 in a corresponding manner to a lower connection end 16 which engages a spring hook 17 which is fastened in the lower region of the side frame 4.
  • the spring is in the closed position due to its connection to the connecting member 12 of the door leaf extended to its greatest operating length, while it increasingly contracts under the pretension given to it when the door leaf 2 is moved into the open position and finally assumes its smallest operating length when the door leaf 2 is in its open position.
  • this has only a relatively small change in operating length and is strongly preloaded.
  • the intermediate member designed as a spring retaining band has a series of openings arranged successively in its longitudinal direction and elongated in this direction, the lower one here with 19 and the top one with 20 is designated.
  • the hook-shaped upper connection end 15 of the spring 14 can optionally be used in one of these series of openings in which the correct pretension is given. Gates of this type are known and work perfectly.
  • the spring 14 is penetrated by a protective element, designated as a whole by 18, which consists of two loop parts 22 and 23 which extend through one another in the manner of particularly elongated chain links and are accordingly longitudinally displaceable relative to one another.
  • the two loop parts 22 and 23 pass through the space encompassed by the helix or the helical paths of the helical spring 14.
  • the lower end of the loop part 23 assigned to the lower hook-shaped connection end 16 of the spring 14 is held together with this connection end 16 of the spring 14 on the spring hook 17, while that of the upper hook-shaped connection end 15 the upper loop part 22 assigned to the spring 14 is fixed with its arcuate upper end serving as a retaining formation in the region of the uppermost elongated hole opening 20 of the intermediate member 13. Different types of this determination will be explained later.
  • the spring 14 is hooked with its upper connection end 15 into the lowermost slot opening 19, that is, when viewed upwards, it is far overhanged by the upper end or the holding design 26 of the upper holding part 22.
  • This ensures that the spring 14 can be lifted out of the slot opening 19 for the purpose of adjustment or re-tensioning and hooked into one of the slot openings above it, while the loop parts 22 and 23 of the protective element 18 are dimensioned in this way by their upper and lower fixing are that they are pulled apart to their maximum overall length when the gate is closed and thus the greatest spring tension and the highest probability of a spring break. If the spring breaks now, the spring fragments are caught without being able to make an excessive lateral movement. If the spring breaks in a less tensioned state, the energy is also smaller, so that the flexibility of the tensioning element 18 is less and less important due to the correspondingly widely shifted loop parts.
  • connection end 15 of the spring 14 engages directly on the lower edge of the slot opening lying in the pulling direction, while the protective element 18 is held in the free area of this slot opening above it, be it in the form of the passage of the loop itself through this free space of the elongated hole, be it through a bolt of a holding part, as will be described later.
  • Such a procedure has the advantage that the freedom of movement of the connection end 15 of the spring 14 is limited when it breaks in the direction of unhooking. It cannot be ruled out that the spring breaks in the area of the transition between the connection end 15 and the first closed screw turn of the spring.
  • connection end 15 by exiting from the hanging opening is to be prevented.
  • this can also be achieved with an arrangement according to FIGS. 1 and 2 by closing the space of the elongated hole opening 19 above the connection end 15 with a screw, and accordingly restricting the freedom of movement of the hook-shaped connection end 15 accordingly.
  • this also applies when the spring is hooked into other elongated hole openings, and one can also insert the holding formation 26 of the upper holding part 22 together with the connecting end 15 of the spring 14 into a lower-lying elongated hole opening, in order thus to achieve the described prevention of the movement unit .
  • FIGS. 5 to 7 show enlarged, on the other hand reduced with regard to the longitudinal directions of the arms, springs and loop parts, again a side frame region with the measures provided for the weight compensation tension spring arrangement and its securing.
  • the Upper, arcuate transition between the loop legs 24 and 25 of the upper loop part 22 is above the upper connection end 15 of the tension spring 14 suspended in the same slot opening 20. In connection with FIGS. 11 and 12 this will be discussed again.
  • 5 to 7 show in particular the design of the spring hook 7, on which the hook-shaped lower connecting end 16 of the spring 14 and the arcuate transition between the loop webs 24 and 25 of the lower loop part 23 are held in parallel.
  • This bracket takes place in a downwardly open, approximately U-shaped recess, which forms a fixing formation 38 together for the lower spring connection 16 and the lower closed arcuate transition of the lower loop part 23.
  • an angular region 39 adjoins the fixing formation 38, the side region facing away from the formation 38 is fixed to the side frame 4 by welding or the like.
  • a downwardly projecting section 40 on which a support tab 41 is bent towards the side frame.
  • This support tab 41 abuts a door leaf cover strip 42 fixed to the frame, so that the spring hook 17 can be pulled off the cover strip 42 so elastically by attacking approximately in section 40 that the end of the support tab 41 comes free and a gap is formed, through which the lower, closed, arched end region of the lower loop part 23 can be inserted from the outside.
  • the spring hook After the spring hook has been released, it returns to its contact position on the cover strip, as is illustrated in FIG. 7. In this way, 17 protective elements can be introduced into the fixing formation of the spring hook, which in this area are completely ge are closed.
  • FIG. 8 shows different designs of interlocking loop parts, as can be used in the previous figures.
  • two interlocking loop parts 22 and 23 are shown, which are formed with completely parallel loop webs 24 and 25 for narrow springs and thus equally large arcuate transitions in the upper and lower end region of the loop webs.
  • these arched transitions are curved differently at the top and bottom of the two loop parts, each with a narrower arc or radius at the top and a further one at the bottom.
  • the loop webs 24 and 25 no longer run strictly parallel, but decrease in their upward spacing.
  • the protective element in the lower end region of the upper loop part 22 approaches the inner diameter of a wider coil spring and thus experiences a certain amount of guidance or an uncontrolled back and forth swinging and thus rattling can be prevented, while in the upper end region this Loop part 22 is obtained by the narrower arc-shaped transition a holding training 26 which is adapted to a holding part, as will be described in connection with Figures 11 and 12. Even when reaching through an elongated hole of the spring retaining band or intermediate member 13, a not unnecessarily wide arc results.
  • the other loop part 23 is also preferably shaped so that pushing into one another and threading into the spring hook is made easier. The embodiment shown on the left in FIG.
  • an upper loop part 22 which is interrupted in the region of its one loop web 25, that is to say has two loop ends 35 and 36 which face one another and can be connected to one another by a closing part 34.
  • the two loop ends 35, 36 can each be provided with welded ring eyelets which are penetrated by a screw shaft in the closing case.
  • the upper loop part can also be subsequently arranged through an elongated hole of the intermediate link 13 or around the connecting link 12. This training is therefore particularly suitable for a retrofit kit for protecting already installed coil tension springs. If such a protective element is already attached at the factory or when the spring is being installed, the loop ends of an initially open loop part can subsequently be welded together.
  • FIGS. 9 and 10 show a form-fitting mounting of the retaining formation 26 of the upper loop part 22 on the band-shaped intermediate member 13 in such a way that the loop part 22 with its upper arch region and the retaining formation 26 thus obtained passes through an elongated opening, for example 20.
  • an open loop shape is required, which is closed by welding or screwing after passing through the slot opening.
  • the lockable shape of the loop part 22 shown on the left in FIG. 8 is suitable as a retrofit kit.
  • FIGS. 11 and 12 show another way of fixing the upper end of the loop part 22, namely with the aid of a holding part 27, which is essentially formed by a clamping bolt 28.
  • the gudgeon bolt has a correspondingly wide bolt head and is guided with its bolt shank both through the loop part 22 in its upper, curved end region 26 and through the upper region of an elongated hole - for example 20 - of the intermediate link 13 and then screwed with the aid of a nut.
  • the lower area of the same slot opening 20 passes through the upper hook-shaped connecting end 15 of the spring 14.
  • FIGS. 11 and 12 are an enlarged partial representation of the conditions according to FIGS. 5 and 6.
  • the upper connecting end 15 of the spring 14 has practically no freedom of movement in the elongated hole Opening 20 has more and therefore cannot break out of engagement on the intermediate member 13 even in the event of a break in the region of the transition between the hook 15 and the helical body of the spring 14.
  • FIGS. 13 to 17 an exemplary embodiment of a one-piece design of the protective element 18 is shown.
  • the mechanics of the gate and the mounting of the helical tension spring are identical to those in the previous figures, ie it is a gate as shown in FIGS. 1 to 4.
  • the length-shortened representation according to FIG. 13 shows the protective element 18 in the form of an elongated loop which is guided by the fixing formation 38 of the spring hook 17 through the space enclosed by the spring coil and extends far beyond the upper connection end 15 of the spring 14 and with its upper end finally, as a retaining formation 26, the connecting member 12 between the short lever arms 7 and 8 comprises.
  • the upper connection end 15 of the spring 14 is suspended in any of the elongated holes in the band-shaped intermediate member 13.
  • FIG. 13 shows approximately the position in which the door leaf 2 is in its closed state, that is to say the spring 14 approximately reaches its highest elongation and thus its strongest state of tension.
  • the loop 21 is practically free of displacement between the connecting member 12 and the fixing formation 38, so that a lateral deflection of the loop 21 can be kept correspondingly low in the event of a spring break under correspondingly high energy.
  • FIG. 14 shows three loop forms of one-piece design, the one shown on the right representing the simplest, self-contained design of the loop 21.
  • the lower ends of the loop webs 24 and 25 are not closed by an arcuate loop transition, but are each deformed into an eyelet 37 in such a way that the surfaces enclosed by the eyelets lie in parallel planes to the plane in the region of the upper end of the loop 21, that is to say in the region of its holding formation 26, is stretched.
  • the middle configuration of the loop 21 can thus be used exactly as shown in FIG. 13 using the closed loop shown on the right in FIG. 14.
  • the eyelets 37 can thus be inserted away from the side frame 4 through the slot formed in this way between the support tab 41 and the adjacent section of the door leaf cover strip around the section 40 into the fixing formation 38 of the spring hook 17.
  • a further embodiment is shown on the left in FIG. 14, namely one in which the loop is divided in the region of a loop web 25 and the loop ends 35 and 36 thus formed can be joined together with the aid of a closing part 34.
  • the split shape of the loop 21 described last is well suited for a retrofit kit.
  • This solution is made even more elegant in the middle configuration of the loop 21, because it is open in its lower end region and only by inserting the eyelets 37 into the Spring hook 37 is connected by this to a closed loop shape.
  • This middle design of the loop 21 is accordingly inserted from above with the eyelets 37 in front via the connecting member 12 into the spring until the eyelets 37 reach the area of the spring hook and the connecting member 12 is located in the upper end area of the loop 21. Then the eyelets 37 are transferred in the form described in the fixing training 38. Since the eyelets are welded closed in themselves, the positive engagement provided according to the invention prevails again in both end regions of the loop 21.
  • the one-piece design of the protective element 18 leads to the fact that the upper connection end 15 of the spring 14 which assumes different expansions and thus the intermediate member 13 and the connecting member 12 must be able to move longitudinally with respect to the loop 21.
  • This is not harmful, because if the spring breaks in its contracted and thus less pretensioned state, the forces occurring are lower and the existing play of the loop 21 to the connecting member 12 can be accepted.
  • FIGS. Another type of longitudinally displaceable mounting of the upper end region of the loop 21 of the one-piece protective element 18 is shown in FIGS.
  • the attachment takes place in the area of the intermediate member 13, specifically above the hooking location of the hook-shaped upper connection end 15 of the spring 14. Opening 20, in which the upper connection end 15 of the spring 14 is also suspended.
  • This limits the freedom of movement of the hook-shaped connecting end 15 accordingly, as has been described in connection with FIGS. 11 and 12.
  • the hook 15 assumes the lower position, while a fastening bolt 33 of a holding member, designated overall by 29, is guided through the free space above it of the slot opening.
  • the holding member 29 itself consists of the aforementioned fastening bolt 33, which strives from a U-shaped tab 32, from its inner central region parallel to its U-legs 31. As can be seen in particular in Figure 17, the legs 31 take in the assembled state the band-shaped intermediate member 13 between them.
  • the fastening bolt is of a stepped design, ie it is thicker in its area facing the tab 32 and runs freely into a thinner threaded pin.
  • the step formed between the two different diameters of the bolt 33 serves as a contact surface on the lateral edges of the elongated hole opening 20 in the intermediate member 13, so that only the thinner threaded part of the fastening bolt 33 passes through the elongated hole opening and allows a nut to be unscrewed the band-shaped intermediate member 13 braced against the shoulder of the bolt 33.
  • a guide channel 30 is formed between the thicker shaft part of the fastening bolt 33 and the legs 31 of the tab 32.
  • One of the loop webs 24 and 25 is inserted into each of the guide channels 30, and there is so much play that the loop webs 24 and 25 can be moved unhindered in their longitudinal direction with respect to the tab 32.
  • 15 and 16 show two different displacement positions of the upper edge region of the loop 21 and the holding formation 26 formed therewith.
  • the local attachment of the holding member 29 or the length of the loop 21 is dimensioned such that when the door leaf 2 is closed, the retaining formation 26 includes the fastening bolt 33, so that a shortening of the loop 21 initiated by transverse forces in the event of breakage cannot take place.
  • the retaining formation 26 of the loop 21 can be correspondingly displaced upward.
  • the tab can be created instead of the bolt gradation to create the guide channels by inwardly bent webs that are formed in the manufacture of the opening for the introduction of a continuously slim fastening bolt on the tab.
  • the tab 32 of the holding member 29 and thus the longitudinal displacement guide of the loop 21 is particularly preferably located on the side frame 4 facing the side of the intermediate member 13 designed as an elongated spring retaining band.
  • the loop 21 remains covered and does not protrude far into the interior, particularly if because of the lower attachment of the holding member 29 than the connecting member 12, the length of the loop 21 is kept correspondingly smaller.
  • This protective element for different door sizes or heights by measuring it over the longest expansion distance and, when used at shorter distances or working distances, by separating a certain part of the loop by limiting a fitting between the two loop webs 24 and 25 attached. So this is only the effective loop length by appropriate spatial arrangement of the Determined fitting.
  • the fitting can be placed in a clamped position because the form-fitting mounting of the loop or of the respective loop part is not impaired thereby.
  • the displacement of the clamping fitting in the event of a spring break serves for damping.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Springs (AREA)
EP86115093A 1985-10-31 1986-10-30 Porte relevable à l'horizontale équilibrée par un ressort de traction en spirale qui est traversé par un élément de sécurité Withdrawn EP0220742A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3538801 1985-10-31
DE19853538801 DE3538801C2 (de) 1985-10-31 1985-10-31 Überkopftor mit Gewichtsausgleichs-Schraubenzugfeder, die von einem Schutzelement durchgriffen ist

Publications (2)

Publication Number Publication Date
EP0220742A2 true EP0220742A2 (fr) 1987-05-06
EP0220742A3 EP0220742A3 (fr) 1987-08-19

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EP86115093A Withdrawn EP0220742A3 (fr) 1985-10-31 1986-10-30 Porte relevable à l'horizontale équilibrée par un ressort de traction en spirale qui est traversé par un élément de sécurité

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DE (1) DE3538801C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3912291C1 (fr) * 1989-04-14 1990-07-26 Reinhard 3005 Hemmingen De Zills

Citations (5)

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US3429072A (en) * 1967-07-14 1969-02-25 Douglas Charles Sammons Coiled spring assemblies
US4057235A (en) * 1976-06-03 1977-11-08 William Halopoff Spring retainer for garage door hardware
DE2923327B1 (de) * 1979-06-08 1980-05-08 Hoermann Kg Vorrichtung zur Gewichtsentlastung eines bewegbaren Tors
DE8135815U1 (de) * 1981-12-09 1982-05-13 Wilh. Berg GmbH & Co KG, 5990 Altena Torzugfeder als Gewichtsausgleich für ein Garagentor
DE3112926A1 (de) * 1980-07-14 1982-12-30 Erich 9442 Berneck St. Gallen Döring "garagenschwingtor mit federschutz"

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US2657420A (en) * 1950-11-24 1953-11-03 Gen Electric Spring terminal fitting
US3575404A (en) * 1969-01-06 1971-04-20 Herman Otto Wesch Protective shroud assembly for installation about stressed coil springs

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Publication number Priority date Publication date Assignee Title
US3429072A (en) * 1967-07-14 1969-02-25 Douglas Charles Sammons Coiled spring assemblies
US4057235A (en) * 1976-06-03 1977-11-08 William Halopoff Spring retainer for garage door hardware
DE2923327B1 (de) * 1979-06-08 1980-05-08 Hoermann Kg Vorrichtung zur Gewichtsentlastung eines bewegbaren Tors
DE3112926A1 (de) * 1980-07-14 1982-12-30 Erich 9442 Berneck St. Gallen Döring "garagenschwingtor mit federschutz"
DE8135815U1 (de) * 1981-12-09 1982-05-13 Wilh. Berg GmbH & Co KG, 5990 Altena Torzugfeder als Gewichtsausgleich für ein Garagentor

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EP0220742A3 (fr) 1987-08-19
DE3538801C2 (de) 1993-12-09
DE3538801A1 (de) 1987-05-07

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