SEAL WITH A LIMIT ON THE MOVEMENT OF THE SEALING STRIP

Description

[0001] The present invention relates to a seal according to the preamble of claim 1.

[0002] Swiss patent CH 465 830 and European patent EP 1 450 002 B2 each describe a seal comprising at least two scissor mechanisms for lowering a sealing strip. The sealing strip includes a retaining profile and a sealing profile. Each scissor mechanism is associated with an overload mechanism. The seal according to document CH 465 830 has a trigger connected to the scissor mechanisms via a connecting rod. Actuation of the trigger can be transmitted from the trigger to the scissor mechanisms via the connecting rod. When the trigger is actuated, the trigger rod is moved in a longitudinal direction along the seal within a housing. The scissor mechanism converts this longitudinal movement into a movement transverse to the longitudinal extent of the seal, thereby lowering and raising the sealing strip.The scissor mechanisms thus connect the sealing strip and the housing and allow the sealing strip to be moved parallel to the housing.

[0003] The movement of the trigger of the seal from document CH 465 830 is limited. The trigger is of such a size that, when actuated, it can strike the housing of the seal from which the connecting rod protrudes, on which the trigger is attached.

[0004] The seal described in document EP 1 450 002 B2 is different. This seal also has a connecting rod, which protrudes from the housing. The end of the connecting rod protruding from the housing forms a trigger that can be activated to lower the sealing strip of the seal using the scissor mechanism. When the seal is installed, the trigger can only be pushed into the housing until it is completely retracted. In practice, however, due to a gap between the door leaf and the frame, the trigger will protrude from the housing even when the door is closed. When the seal is not installed, the trigger can even be pushed further into the housing.

[0005] In other seals, including those without scissor mechanisms to transfer the longitudinal movement of the connecting rod into a downward or upward movement of the sealing strip, a trigger is provided. This trigger is attached to the seal's connecting rod in such a way that its projection from the seal housing can be adjusted. Such triggers can be set to protrude very far from the housing. If a trigger protruding significantly from the housing is actuated so that it disappears completely into the housing, the sealing strip makes a maximum stroke. This stroke can be so large that parts of the seal are completely dislodged from the housing. These parts may include, for example, the sealing profile itself. In particular, the legs of the sealing profile that extend towards the housing may then no longer be guided by the housing.This can lead to parts of the sealing strip that have lost their guide through the housing not entering the housing properly when the trigger is released. It can even result in damage to parts of the sealing strip, especially the sealing profile.

[0006] Document EP 0 509 961 A1 discloses a seal in which the stroke that the sealing strip can exert is limited. The seal has a lowering mechanism with leaf springs. To limit the stroke, a web of the seal housing has an indentation that projects into the interior of the housing. This inwardly projecting indentation forms a stop for the spring of the lowering mechanism.

[0007] In the seal known from document EP 0 509 961 A1, the stop is formed in the housing by the indentation in the bridge of the housing, against which the leaf spring connected by a connecting rod, which transmits a movement to the lowering mechanism, strikes directly or indirectly when the lowering mechanism is actuated, before the movement of the sealing strip causes parts of the sealing strip to lose their guidance through the housing of the seal or the sealing strip to exit the housing completely.

[0008] The stroke limitation of the seal known from document EP 0 509 961 A1 is achieved by the interaction of the leaf spring belonging to the lowering mechanism with the stop formed by the indentation in the housing. Therefore, this type of stroke limitation can only be used with seals that incorporate a leaf spring.

[0009] This is where the present invention comes in.

[0010] The present invention addresses the problem of proposing an alternative solution for limiting the stroke.

[0011] This problem is solved according to the invention by a seal having the features of claim 1.

[0012] The stop is a separate component that is either fixed within the housing so as to be immovable relative to the housing, or fixed to the connection assembly so as to be immovable relative to the connection assembly.

[0013] An end of the connecting rod assembly facing away from the trigger can have at least one structure designed to abut the stop. The stop itself could also be located at the same point. In that case, viewed from the direction of the trigger, the stop is either attached to the housing behind the end of the connecting rod assembly facing away from the trigger, or it is attached to the connecting rod assembly itself.

[0014] It is also possible that the connecting rod assembly, between the end to which the trigger is attached and the end of the connecting rod assembly opposite the trigger, has at least one structure designed to abut the stop. The stop can then be attached to the housing above, below, or beside the connecting rod assembly when viewed in the longitudinal direction of the seal.

[0015] It is possible that the connecting rod assembly has a stop between the end where the trigger is attached and the end of the connecting rod assembly opposite the trigger. A structure against which the stop abuts can then be attached to the housing above, below, or beside the connecting rod assembly when viewed in the longitudinal direction of the seal.

[0016] A seal according to the invention can have at least two modules, wherein each module a module housing that is attached to the housing, a sliding part that is movable relative to the module housing, and one of the scissor mechanisms that is connected to the module housing, to the sealing strip and to the sliding part, exhibits wherein the sliding parts of the modules are parts of the sliding rod arrangement which are connected to each other and to the trigger via connecting rods.

[0017] According to the invention, one of the modules can be a

[0018] The reset mechanism comprises a reset spring which is supported on an element of the reset mechanism rigidly connected to the module housing, and the stop is rigidly connected to this element for supporting the reset spring. The element may be part of a holder for the reset spring, and the stop may be attached to a trigger-side end of the holder. In particular, the stop may be attached to the trigger-side end.

[0019] It is also possible that the stop is attached to the module housing of one of the modules. The module housing in which the stop is attached may belong to the module furthest from the trigger. If the stop is attached to the module housing, it may, in particular, be located between one end of the module housing and the end of the module's sliding element within the module housing.

[0020] In these two variants, the sliding part of the module, in which the stop is provided, can strike the stop to limit the movement of the connecting rod assembly and thus of the retaining profile and the sealing profile.

[0021] It is particularly advantageous if the stop consists at least partly of an elastomer, so that the impact against the stop can be dampened.

[0022] Further features and advantages of a seal according to the invention are described with reference to the accompanying illustrations. These show: Figs. 1 and 1a are perspective views of the seal according to the invention in a non-triggered state and in a triggered state. Figs. 2 and 2a are front views of the seal in a non-triggered state and in a triggered state. Figs. 3 and 3a are lock-side views of the seal in a non-triggered state and in a triggered state. Figs. 4 and 4a are band-side views of the seal in a non-triggered state and in a triggered state. Figs. 5 and 5a are sections through the seal in a non-triggered state along line VV. Fig. 2 and in a triggered state according to the Va-Va line in Fig. 2a , Fig. 6 and 6a a section through the seal in a non-triggered state along line VI-VI in Fig. 2and in a triggered state according to the Vla-Vla line in Fig. 2 Figs. 7 and 7a show a front view of the seal without housing and without sealing strip in a non-triggered state and in a triggered state; Figs. 8 and 8a show a front view of the seal without housing, without retaining module and without sealing strip in a non-triggered state and in a triggered state; Figs. 9 and 9a show an enlarged detail IX from Fig. 8 or an enlarged section IXa from Fig. 8a , Fig. 10 and 10a an enlarged section X from Fig. 8 . or an enlarged section Xa from Fig. 8aFig. 11 a perspective view of the scissor mechanism, Fig. 12 a perspective view of a short scissor leg, Fig. 13 a perspective view of a long scissor leg, Figs. 14a and b views of the assembly of the scissor mechanism, Figs. 15a to d front views of a unit consisting of connecting rods and a sliding element, Figs. 16a to d views of the aforementioned unit from below, Fig. 17 a front view of a holder of an overload spring, Fig. 18 a view of the holder of the overload spring from below, Figs. 19a and b views of the assembly of the overload mechanism, Figs. 20a and b sectional views of the assembled overload mechanism, Figs. 21 and 21a a first variant of the seal according to the invention in a non-triggered state and in a triggered state, Figs. 22a to c steps of an assembly according to the invention of a second variant of the seal according to the invention, Fig. 23 a first Inventive embodiment of a second module and Fig.24 a second embodiment of a second module according to the invention.

[0023] A seal according to the invention comprises a housing 1 which has a constant cross-sectional profile along its length. In the illustrated example, the housing essentially has the shape of an inverted U with two legs 12 and a connecting web 11 that joins the two legs 12 together. Two mirror-image webs 111 are attached to an inner side of the web 11 of the housing 1. These are slightly undercut on their facing sides 1111, so that the facing sides 1111 form a groove. The opposite sides 1112 of the webs 111 are slightly inclined.

[0024] The housing can be attached in a groove of a door leaf in a known manner. Attachment can be achieved, for example, using mounting brackets, which will be discussed later. Various attachment methods are familiar to those skilled in the art, particularly from published patent applications. Depending on the type of attachment, the housing can be modified to include, for example, channels, ribs, screw holes, or other features that are useful for attaching the seal to a door.

[0025] A seal also has a sealing strip. In this example, the sealing strip is made of two parts. However, it could be a single piece or have more than two parts. In principle, any sealing strip known from the prior art can be used. In this example, the sealing strip comprises a rigid retaining profile 13, preferably made of aluminum, and an elastomeric sealing profile 14. Both have a constant cross-sectional profile along their length. In this example, the retaining profile 13, like the sealing profile, is essentially U-shaped in cross-section. The retaining profile 13 and the sealing profile 14 each have a connecting web 131, 141 and two legs 132, 142, which are connected to each other via the connecting web 131, 142.

[0026] The sealing profile 14 is fastened via locking tabs 143 in locking channels 133 of the retaining profile 13.

[0027] On the inside of the legs 132 of the retaining profile 13, two webs 134 are provided, which together with the connecting web 131 form channels, the purpose of which will be explained in more detail below.

[0028] The seal contains two modules Ma, Mb, which in the exemplary embodiment comprise all parts that serve to ensure the safe movement of the sealing strip relative to the housing.

[0029] The parts of the seal belonging to modules Ma and Mb are partially identical in both modules. These parts can then serve the same functions in modules Ma and Mb. Modules Ma and Mb also have special functions that require special parts. Functions performed by the first module in this example can be performed by the second module in another embodiment of a seal according to the invention, and vice versa. It is therefore within the scope of the invention to modify the parts of modules Ma and Mb so that they can, if necessary, perform fewer, different, or additional functions.

[0030] Identical or functionally similar parts of modules Ma and Mb have reference symbols with the same numbers and are distinguished by the appended letters a and b, where a denotes parts of the first module and b denotes parts of the second module. When discussing details of parts of modules Ma and Mb, these will be designated without appended letters if they are found in parts of both modules Ma and Mb.

[0031] In this example, both modules Ma, Mb of the seal according to the invention have the function of connecting the sealing strip and the housing and, when the seal is triggered by pressing a trigger 16, converting the movement of the trigger 16 into a movement of the sealing strip relative to the housing 1. For this purpose, each module Ma, Mb has a scissor mechanism Sa, Sb. To protect this scissor mechanism Sa, Sb of each module Ma, Mb in a so-called overload case, each module Ma, Mb also has an overload mechanism Ua, Ub.

[0032] The modules Ma, Mb can be placed in a housing 1 at the discretion of a person skilled in the art. However, it is also possible for a seal according to the invention to have no housing and for the modules to be placed directly in a groove of a door. It is also possible to design a seal such that it has only one module.

[0033] The first module Ma comprises a module housing 2a. This housing has a substantially uniform cross-sectional profile in the shape of an inverted U. It features a connecting web 21 that joins two legs 22 of the module housing 2a. Webs 221 are attached to the inner sides of the legs 22. These, together with the connecting web 21, form channels, the function of which will be explained later.

[0034] The connecting web 21 projects beyond the outer surfaces of the legs 22. These projecting ends 211 of the connecting web are designed to form a fit with the grooves on the facing sides 1111 of the webs 111 of the housing 1. In particular, a clearance fit with a small amount of play may be formed. The module housing 2a is inserted with its ends 211 into the grooves on the facing sides 1111 of the webs 111 of the housing 1 and is thus at least positively locked in the housing. Complete locking can be achieved, for example, by at least localized inward deformation of the webs 111 of the housing, i.e., against the ends 211 or the legs 22. Parts of the webs 111 can thereby be pressed against the ends 211 or legs 22, so that at least a frictional connection is established.

[0035] The trigger-side ends of the module housing 2a are flush with a trigger-side end of the housing 1. However, the connecting web 21 is missing in one area at the trigger-side end of the module housing. The reason for the absence of the connecting web 21 at the trigger-side end of the module housing 2a is that its absence creates space to insert a mounting bracket into the housing 1.

[0036] In a region of the module housing 2a of the first module Ma, located away from the trigger point, two opposing holes are provided in the legs 22, directly adjacent to the webs 221. Corresponding holes are also provided in the module housing 2b of the second module Mb. Pins 71 of a short scissor element 7a are rotatably mounted in these holes. These pins 71 also bear against the underside of the webs 221, thus supporting the pins 71 when a load is applied towards the webs 221 and protecting them from shearing off.

[0037] The short scissor element 7a of the first module Ma – which is identical in construction to the short scissor element 7b of the second module Mb – is essentially H-shaped. It has a connecting web 72 from which two arms 73 and two legs 74 extend. At the ends of the arms 73, which are slightly shorter than the legs 74, are the outwardly projecting pins 71, whose function has already been explained. The ends of the arms 73 rest against the webs 221, which supports the arms 73 when a load is applied towards the webs 221. A load on the short scissor element 7a – and thus on the pins 71 and the arms 73 – can occur when the sealing strip is pressed against a floor during lowering or when the sealing strip is lowered.

[0038] The legs 74 are provided with two inwardly projecting pins 75, which serve to connect to a long scissor element 6a.

[0039] The long scissor element 6a of the first module Ma – which is structurally identical to a long scissor element 6b of the second module Mb – can be divided into two sections: a first section 61, which forms a frame, and a second section 62, which forms a rod. The two sections 61 and 62 are connected to each other. In the area of ​​the connection, the second section 62 of the long scissor element 6a has two outwardly opening blind holes. The inwardly projecting pins 75 of the short scissor element 7a are inserted into these blind holes. This connects the long and short scissor elements 6a and 7a in a pivotable manner.

[0040] The pins 75 inserted into the blind holes, or the ends of the legs 74, bear against bearing shells 611, which are formed on the first section 61 in the area of ​​the connection between the first section 61 and the second section 62. This makes it possible to transmit greater forces to the long scissor element 6a via the pins 75 or legs 74 than if the bearing shells were missing.

[0041] The second section 62 of the long scissor element 6a has a conically tapered area 621 extending from the blind holes towards the free end of the second section 62. This conical taper of the second section 62 facilitates the assembly of the short scissor element 7a onto the long scissor element 6a. For this purpose, the inwardly projecting pins 75 of the short scissor element can be placed onto the second section 62 at the most tapered end of the taper, so that the pins are located on both sides of the second section. From this end of the taper, the pins 75 can then be pushed towards the blind holes. In doing so, the pins 75 are bent apart until they finally engage in the blind holes.

[0042] The free end of the first section 61, or rather the opening in this first section 61, serves to guide and support the long scissor element 6a, which will be explained in more detail later. This free end is movable relative to the module housing 2a.

[0043] At the free end of the second section 62 of the long scissor element, two outwardly projecting pins 63 are provided, which serve to connect the long scissor element 6a to the retaining profile 13. The pins 63 are movably guided and supported in the channels formed by the webs 134 and the connecting web 131 of the retaining profile 13.

[0044] The second section 62 of the long scissor element 6a has a width that is no greater than the distance between the legs 74 of the short scissor element 7a. Thus, it is possible for the second section 62 to be immersed between the legs 74, for example, when the seal is not triggered.

[0045] The long scissor element 6a and the short scissor element 7a together form a first scissor mechanism Sa of the first module Ma, which is also present in the second module as a second scissor mechanism Sb formed by the long scissor element 6b and the short scissor element 7b.

[0046] The first module Ma has a sliding element 3a. This sliding element has a flat, rod-like section 31 that extends over the entire length of the sliding element 3a. This flat, rod-like section 31 is approximately T-shaped. Two projecting edges 311 of the rod-like section 31 extend into the channels formed by the webs 221 and the connecting web 21 of the module housing 2a. The edges 311, and thus the entire sliding element 3a, are guided slidably within the channels.

[0047] Three different structures 32, 33a, 34a are provided on the underside of the rod-like section 31.

[0048] The structure 32 at a trigger-side end of the sliding part 3a serves as the first connection structure, which is provided for connecting the sliding part 3a of the first module Ma to a first connecting rod 8. Furthermore, the structure 32 is part of the overload mechanism of the first module Ma.

[0049] Structure 33 interacts with the scissor mechanism Sa of the first module and is part of the overload mechanism of the first module Ma.

[0050] Structure 34 is a second connecting structure that serves to connect the sliding part 3a of the first module Ma with a second connecting rod 9.

[0051] The first and second connecting structures 32, 34 are designed in such a way that both tensile forces and compressive forces can be transmitted via the connecting structures 32, 34.

[0052] The structure 33 has an arm 331 extending towards the trigger-side end, which extends parallel to the rod-like section 31 of the sliding part 3a. This arm 331 passes through the opening in the first section 61 of the long scissor element 6a of the scissor mechanism Sa of the first module Ma. A free end 612 of the first section 61 is thereby supported and guided between the arm 331 and the rod-like section 31 of the sliding part 3a.

[0053] The free end 612 is held in a position between the arm 331 and the rod-like section 31 of the sliding part 3a by a holder 4a for an overload spring 5a and the overload spring 5a of the first module Ma. The overload spring 5a is a helical compression spring. The holder 4a for the overload spring is rod-like.

[0054] The holder can be roughly divided into four areas: 41, 42, 43, 44.

[0055] A first section 41 is designed to be guided between the arm 331 and the rod-like section 31 of the sliding part 3a. For this purpose, the first section 41 of the holder 4a has a channel on its underside into which a web 3311 engages, which is provided on the upper side of the arm 331. A free end 411 of the first section 41 has a groove and forms a bearing shell for the free end 612 of the first section 61 of the long scissor element 6a.

[0056] Adjoining this first section is a second section 42, which has a larger cross-sectional area than the first section 41. This second section 42 forms a stop and also supports the first end of the overload spring 5a, which is mounted on the third rod-like section 43 of the holder 4a. A second end of the overload spring 5a supports the structure 32 of the sliding part 3a. The overload spring 5a presses the holder, and in particular the first section 41 of the holder, against the structure 33 of the sliding part. This holds the free end 612 of the first section of the long scissor element 6a between the arm 331 and the rod-like section 31.The stop function of the second section 42 of the holder 4a ensures that the overload spring 5a does not press the free end 612 of the first section 61 of the long scissor element 6a against the structure 33, which could impede easy pivoting of the long scissor element. The length of the first section 41 of the holder 4a is chosen such that the free end 612 of the first section 61 of the long scissor element 6a is supported with at least slight play between the structure 33 and the first section 41 of the holder 4a.

[0057] The third section 43 of the holder 4a is adjoined by a fourth section 44. This fourth section 44 is guided in a blind hole in the structure 32. A lower boundary wall 321 of the blind hole has a downwardly open slot. This slot tapers from bottom to top, i.e., from the outside towards the blind hole. This makes it possible to press the fourth section 44 of the holder 4a into the blind hole from below through the slot. The slot is elastically widened in the process. The fourth section 44 of the holder 4a cannot easily be removed from the blind hole through the slot or fall out.

[0058] The second module Mb also includes a module housing 2b. The module housing 2b of the second module Mb has the same cross-sectional profile as the module housing 2a of the first module. It differs primarily in its length. The module housing 2b of the second module Mb is longer than the module housing 2a of the first module Ma. This additional length is required to accommodate a reset mechanism R.

[0059] The reset mechanism R serves to return the seal from a triggered state to a non-triggered state when the force triggering the seal is removed by the trigger 16.

[0060] The second module Mb, like the first module Ma, has a sliding element 3b. This sliding element has a flat, rod-like section 31 that extends over the entire length of the sliding element 3a and whose cross-section corresponds to that of the corresponding section 31 of the sliding element of the first module.

[0061] The flat, rod-like section 31 bears three structures 32, 33b, 34b on its underside.

[0062] Structure 32 at a trigger-side end of the sliding part 3b serves as the first connecting structure for connecting the sliding part 3b of the second module Mb to the second connecting rod 9. Furthermore, structure 32 is part of the overload mechanism of the first module Ma. This structure is identical to the corresponding structure 32 of the sliding part 3a of the first module Ma.

[0063] Structure 33b interacts with the scissor mechanism Sb of the second module Mb and forms part of the overload mechanism Ub of the second module Mb. It also forms part of the restoring mechanism R.

[0064] Structure 34b serves as part of the return mechanism.

[0065] The structure 34b could also serve as a second connecting structure, which could serve to connect the sliding part 3b of the second module Mb with a further connecting rod 9, which is not provided in the embodiment.

[0066] The overload mechanism Üb of the second module Mb is designed in the same way as the overload mechanism Üa of the first module Ma.

[0067] The scissor mechanism Sb of the second module Mb is designed in the same way as the scissor mechanism Sa of the first module.

[0068] The return mechanism R comprises, in addition to the aforementioned structures 33b and 34b, a holder 10 for a return spring 11 and the return spring 11 itself. The holder 10 has a first fork-shaped section 101, which has two pins 1011 on its outer sides. These pins 1011 are inserted into holes in the module housing 2b of the second module Mb. This prevents the holder 10 from shifting relative to the module housing 2b and the housing 1.

[0069] A second section 102 adjoins this first section 101, onto which the return spring 11 is mounted. The return spring 11 is a helical compression spring.

[0070] A third section 103 adjoins the second section. This third section is guided in a blind hole in the structure 33b of the sliding part 3b. A lower boundary wall 331 of the blind hole has a downwardly open slot. This slot tapers from bottom to top, i.e., from the outside towards the blind hole. This makes it possible to press the third section 103 of the holder 10 into the blind hole from below through the slot. The slot is elastically widened in the process. The third section 103 of the holder 10 cannot easily be removed from the blind hole through the slot or fall out. This secures the position of the return spring 11 in the seal.

[0071] In the second module Mb, a stop 17 is provided (see Fig. 23This stop 17 serves to limit the travel of the retaining profile 13 and the sealing profile 14 attached to it relative to the housing 1, so that when the seal is actuated, particularly when not mounted in a door, the sealing profile 14 does not enter a position where it loses its guidance by the housing 1. Otherwise, there is a risk that the sealing profile 14 will protrude from the housing 1. If the retaining profile 13 is then pulled back into the housing 1 via the scissor mechanisms Sa, Sb when the trigger 12 is released, the sealing profile 14 could be damaged if it loses its guidance by the housing 1. The stop 17 limits the movement of the connecting rod assembly, which comprises the connecting rods 8, 9 and the sliding parts 3a, 3b, as well as the trigger 16.This also limits the movement of the scissor mechanisms Sa, Sb and consequently of the retaining profile 13 and the sealing profile 14.

[0072] The stop 17 is located on the third area 103 of the holder 10 for the return spring 11. The stop 17 is an elastomer tube that is attached to the third area 103 of the holder 10. The sliding element 3b of the second module abuts against this stop 17 if the trigger 16 is pressed so far into the housing that there is a risk of the sealing profile losing its guidance by the housing 1.

[0073] The stop 17 can also be arranged in the second module housing 2b between the end furthest from the trigger of the sliding part 3b and the end furthest from the trigger of the module housing 2b, and be permanently connected to the module housing 2b. Alternatively, it is possible to attach the stop 17 to the end furthest from the trigger of the sliding part 3b, as shown in Fig. 24As shown, a counterpart to the stop is provided at the end of the module housing 2b furthest from the trigger. This counterpart interacts with the stop 17 to limit the travel of the sliding part 3b of the second module Mb and the entire connecting rod assembly 8, 9, 3a, 3b and the trigger 16. The stop 17 is positioned in the module housing 2b or on the sliding part 3b such that, when the trigger 16 or the seal is actuated, the connecting rod assembly 8, 9, 3a, 3b abuts the stop 17 or the counterpart before the sealing profile 14 loses its guidance through the housing 1 and could be damaged.

[0074] The connections between the trigger 16, the first connecting rod 8, the sliding part 3a of the first module Ma, the second connecting rod 9 and the sliding part 3b of the second module Mb are subjected to pressure both during triggering and resetting, firstly by the pressure exerted on the trigger 12 and secondly by the pressure exerted by the return spring 15.

[0075] The movement of the unit consisting of the trigger 16, the first connecting rod 8, the sliding part 3a of the first module Ma, the second connecting rod 9, and the sliding part 3b of the second module Mb, as well as the holders 4a, 4b for the overload springs, also moves the free ends 612 of the long scissor elements 6a, 6b. This causes these ends 612 to be displaced relative to the housing 1 and the module housings 2a, 2b, and the pivotally mounted pins 71 of the short scissor elements 7a, 7b. The scissor mechanisms Sa, Sb open, and the sealing strip is thereby moved downwards.

[0076] If the sealing strip is prevented from a complete downward movement for whatever reason, one or more of the overload mechanisms Ua and Ub will become effective. If the sealing strip is prevented from a (further) downward movement, the scissor mechanisms Sa and Sb cannot open further. The free ends 612 of the long scissor elements 6a and 6b cannot then be moved together with the unit consisting of the trigger 16, the first connecting rod 8, the sliding part 3a of the first module Ma, the second connecting rod 9, and the sliding part 3b of the second module Mb.Despite the sealing strip being stationary, the continued movement of the unit consisting of the trigger 16, the first connecting rod 8, the sliding part 3a of the first module Ma, the second connecting rod 9, and the sliding part 3b of the second module Mb causes the free ends 612 of the long scissor elements 6a, 6b to press against the holders 4a, 4b for the overload springs 5a, 5b, and these to be displaced towards the trigger 16. This compresses the overload springs 5a, 5b.

[0077] Advantageously, the distance by which the free ends 612 can be displaced against the overload spring 5a, 5b is the same as the distance by which the unit can be displaced from the trigger 16, the first connecting rod 8, the sliding part 3a of the first module Ma, the second connecting rod 9, and the sliding part 3b of the second module Mb. The scissor mechanisms Sa, Sb are then protected against damage due to an overload.

[0078] During the Fig. 21a In the first variant of the embodiment described above, shown in Figure b, the reset mechanism R is provided not in the second module Mb, but in the first module Ma. This has the advantage that the scissor mechanism Sb could be arranged at the end of the seal furthest from the trigger. This can ensure a stronger pressure on the sealing strip at its furthest end, which can be particularly important for the impact rain tightness of the seal.

[0079] Based on the in the Figures 22a to c The second variant of the embodiment shown explains how a seal according to the invention can be assembled without leaving any play between the connecting rods 8, 9 and the sliding parts 3a, 3b, which could lead to the scissor mechanisms not being actuated synchronously when the trigger of the seal is pressed.

[0080] The in the Figures 22a to cThe second variant of the seal shown is largely designed like the one in the Figures 1 to 20 The illustrated embodiment shows the differences in the design of the connecting rods 8, 9 and the sliding parts 3a, 3b.

[0081] The connecting rods 8, 9 are designed as rods with a circular cross-section that is uniform over the entire length of the connecting rods 8, 9.

[0082] The sliding parts 3a, 3b differ from the sliding parts of the embodiment according to the Figures 1 to 20 by the design of the connecting structures 32, 33 at the ends of the sliding parts. In the second variant, the connecting structures are designed as blind holes into which the connecting rods 8, 9 are inserted, such that there is no play between the connecting rods 8, 9 and the sliding parts 3a, 3b.

[0083] In particular, the connecting rods 8, 9 of the second variant are designed more simply than the connecting rods 8, 9 of the other variants shown, which is an advantage of the second variant over the other variants.

[0084] The freedom from play between the connecting rods 8, 9 and the sliding parts 3a, 3b is achieved in every variant of a seal according to the invention.

[0085] The freedom from play of a seal according to the invention can be achieved in particular if the seals are assembled according to the following method.

[0086] For example, the first module Ma and the trigger 16, which is connected to the first module Ma via the first connecting rod 8, are inserted into the housing 1. The trigger 16, the connecting rod 8, and the sliding part 3a of the first module Ma are pressed against each other without actuating the scissor mechanism Sa of the first module Ma. The first module Ma is positioned in the housing such that the trigger 16 protrudes from the housing 1 by a desired amount.

[0087] In a further step, the connecting rod 9 is inserted into the connecting structure of the sliding part 3a of the first module, located on the side facing away from the trigger 16, without any play in the longitudinal direction relative to the sliding part 3a. For this purpose, the connecting rod 9 is pressed against the sliding part 3a.

[0088] The connecting rod 9 can also be inserted into the housing 1 of the seal together with the first module Ma.

[0089] In the next step, the second module Mb is inserted into the housing 1. The trigger-side connection structure, the blind hole of the sliding part 3b of the second module Mb, is pushed onto the connecting rod 9, so that there is no play between the connecting rod 9 and the sliding part 3b.

[0090] Once the positions of modules Ma and Mb have been found in this way, the module housings 2a and 2b of modules Ma and Mb are attached to housing 1. For this purpose, the following are attached to the... Fig. 22c The points marked with arrows press the webs of housing 1 against the module housings 2a, 2b. 1 Housing 2a Module housing of the first module 2b Module housing of the second module 3a Sliding part of the first module 3b Sliding part of the second module 4a Holder for the overload spring of the first module 4b Holder for the overload spring of the second module 5a Overload spring of the first module 5b Overload spring of the second module 6a Long scissor element of the scissor mechanism of the first module 6b Long scissor element of the scissor mechanism of the second module 7 Short scissor element of the scissor mechanism of the first module 7b Short scissor element of the scissor mechanism of the second module 8 First connecting rod 9 Second connecting rod 10 Holder for the return spring 13 Retaining profile 14 Sealing profile 15 Return spring 16 Release 17 Stop First module Mb Second module Sa Shear mechanism of the first module Sb Shear mechanism of the second module Ua Overload mechanism Ub Overload mechanism R Return mechanism

Claims

1. Seal - with a housing (1), - with a sealing strip (13, 14) which can be displaced relative to the housing (1), - with a trigger (16) with which a displacement of the sealing strip (13, 14) relative to the housing (1) can be triggered, - with at least one lowering mechanism and - with a connecting rod arrangement (8, 9, 3a, 3b) comprising at least one connecting rod (8, 9) which couples the trigger to the lowering mechanism, so that a movement of the trigger can be transmitted to the lowering mechanism, - wherein the seal in the housing has at least one stop (17) against which or with which the connecting rod arrangement strikes directly or indirectly when the trigger (16) is actuated, before, when the trigger (16) is actuated, the movement of the sealing strip (13, 14) leads to parts of the sealing strip (13, 14) losing their guidance through the housing (1) of the seal or the sealing strip (13, 14) emerging completely from the housing (1), characterized in that - the stop is a separate component, - wherein the stop either - is fastened in the housing (1) so as to be immovable with respect to the housing (1) or - is fastened to the connecting rod arrangement so as to be immovable with respect to the connecting rod arrangement.

2. Seal according to Claim 1, characterized in that an end of the connecting rod arrangement facing away from the trigger has at least one structure which is provided for striking against the stop.

3. Seal according to Claim 2, characterized in that the stop, as viewed from the direction of the trigger, is fastened in the housing or to the connecting rod arrangement behind the end of the connecting rod arrangement facing away from the trigger.

4. Seal according to Claim 1, characterized in that the connecting rod arrangement, between the end to which the trigger is fastened and the end of the connecting rod arrangement facing away from the trigger, has the stop or at least one structure which is provided for striking against the stop.

5. Seal according to Claim 4, characterized in that the stop, as viewed in the longitudinal direction of the seal, is fastened to the housing or to the connecting rod arrangement above, below or next to the connecting rod arrangement.

6. Seal according to one of Claims 1 to 5, characterized in that the seal has at least two modules (Ma, Mb), wherein each module (Ma, Mb) has - a module housing (2a, 2b) which is fastened to the housing (1), - a displacement part (3a, 3b) which can be displaced relative to the module housing (2a, 2b), and - one of the scissor mechanisms (Sa, Sb) which is connected to the module housing (2a, 2b), to the sealing strip (13, 14) and to the displacement part (3a, 3b), wherein - the displacement parts (3a, 3b) of the modules are parts of the displacement rod arrangement which are connected to one another and to the trigger via connecting rods (8, 9).

7. Seal according to Claim 6, characterized in that one of the modules (Mb) has a restoring mechanism (R), wherein the restoring mechanism (R) has a restoring spring (11) which is supported on an element (101) of the restoring mechanism (R) which is connected to the module housing, and wherein the stop is fixedly connected to this element (101) for supporting the restoring spring (11).

8. Seal according to Claim 7, characterized in that the element (101) is part of a holder (10) for the restoring spring (11), and the stop is fastened to a trigger-side end of the holder.

9. Seal according to Claim 6, characterized in that the stop is fastened in the module housing of one of the modules.

10. Seal according to Claim 7, characterized in that the module housing in which the stop is fastened belongs to the module which is furthest away from the trigger.

11. Seal according to Claim 10, characterized in that the stop is fastened in the module housing between an end of the module housing and the end of the displacement part of the module.

12. Seal according to one of Claims 1 to 11, characterized in that the stop is at least partially composed of an elastomer.