EP3417132B1 - Door holder - Google Patents

Description

The invention relates to a door stay according to the preamble of the independent claim.

WO 01 90 518 A1 describes a door arrester with a holder housing which can be connected to one of a door and a door frame, and a door holding rod which passes through the holder housing and which can be connected in an articulated manner to the other of the door and door frame. The door holding rod has two braking surfaces facing away from one another, and in the holder housing there are two brake members which can be displaced in the direction of one of the braking surfaces and which can be brought into contact with the braking surface of the door holding rod and together produce a primary braking force component against the displacement of the door holding rod. The door holding rod furthermore has at least one guide surface which is inclined at a right angle to the braking surface and which has no profiling.

GB 948 797 A describes a door arrester with a holder housing which can be connected to one of a door and a door frame, and a door holding rod which passes through the holder housing and which can be connected in an articulated manner to the other of the door and door frame. The door support rod has two braking surfaces facing away from one another and is widened in some areas.

DE 10 2004 03 4259 A1 describes a door retainer that is provisionally used to fix the side door of a motor vehicle, especially for dip coating, comprising a holder housing that can be connected to the door, and a door holding rod that passes through the holder housing and that is articulated to the door frame, the door holding rod being attached to theirs Narrow sides has a braking surface, two metallic spring wire sections being provided on the holder housing, each of which can be brought into contact with the braking surfaces of the door holding rod and thus a primary one Generate braking force component against the displacement of the door support rod. The two spring wire sections are fixed to the housing. A disadvantage of the known door arrester is, on the one hand, that the action on the narrow side of the holding rod tends to generate noise directly through the spring wire sections, as a result of which the ease of use of the door arrester is severely restricted. Furthermore, the spring wire sections tend to corrode due to their exposed position. Finally, the holding forces applied are comparatively low, which is why the door stay is not very suitable for use in regular vehicle construction.

DE 10 2010 051 250 A1 describes a door arrester in which a holding rod passes through a holder housing, a sealing arrangement being provided on the holder housing, which has two tabs which can be brought into sealing contact with two surfaces of the door holding rod, the sealing arrangement being compressible.

DE 10 2014 108 023 A1 describes a door arrester for a motor vehicle, comprising a holder housing which can be connected to a door, the holder housing being penetrated by a door holding rod which can be connected to the door frame in an articulated manner, the door holding rod each having a braking surface on its two broad sides, in each case on the holder housing Direction on the braking surfaces by a spring biased, axially displaceable brake members are arranged, which can be brought into contact with the corresponding braking surface of the door holding rod and generate a primary braking force component against the displacement of the door holding rod. The door holding rod further has two guide surfaces inclined to the braking surface, projecting and recessed sections being provided on the guide surfaces, which functionally correspond to the projecting and recessed sections on the braking surfaces. Arranged on the holder housing are two spring elements running parallel to the direction of displacement of the brake members, which come into circumferential contact with the guide surfaces facing them and a secondary braking force component counter to the Generate displacement of the door support rod. The spring wire sections are arranged in the region of an opening of the holder housing, which is located downstream of the axis of movement of the brake members, so that there is a risk of moments and jamming. Furthermore, the spring wire sections are passed through additional openings through the housing and have to be anchored to plate bodies which are connected to the housing, as a result of which the housing of the door arrester as a whole has a large overall height. The spring wire sections are arranged in a position in the holder housing that is difficult to access, particularly when installed, so that maintenance and cleaning are difficult. Furthermore, the spring wire sections tend to corrode. Finally, the spring wire sections are deformed with respect to the holder housing, so that there are quite large ways to generate a secondary braking force component.

US 2003 016 38 95 A1 describes a door arrester with a holder housing which can be connected to one of the door and door frame, and a door holding rod which passes through the holder housing and which can be connected to the other door and door frame in an articulated manner, the door holding rod having at least one braking surface, at least one on the holder housing Is arranged in the direction of the braking surface movable brake member which is biased by a spring in the direction of the braking surface of the door holding rod and can be brought into contact with it at least in sections to generate a primary braking force component against the displacement on the door holding rod, the door holding rod still one the braking surface has a vertical guide surface. The brake member is designed as a roller holder, an essentially cylindrical roller having end-side axle sections which are mounted in a corresponding circumferential opening. The role is accordingly part of the brake member and is used to generate the primary braking force component.

JP H11 303 487 A describes a door arrester, in which a holder housing can be connected to a door, and one that penetrates the holder housing The door holding rod can be connected to a body part, the door holding rod having a braking surface equipped with depressions, at least one brake member being displaceable in the direction of the at least one braking surface, which can be brought into contact with the at least one braking surface of the door holding rod at least in sections, is arranged on the holder housing and so a primary braking force component against the displacement of the door support rod generated. Furthermore, the door holding rod has at least one guide surface inclined to the braking surface, in which projections are arranged. The holder housing contains on the brake member a guide member directed towards a guide surface, which can be brought into contact with the guide surface at least in some areas, namely in the region of the elevation, as a result of which a secondary braking force component is generated against the displacement of the door holding rod.
It is the object of the invention to provide a door arrester which provides high holding forces at least in sections.
This object is achieved according to the invention by a door arrester with the features specified in the independent claim.

The door arrester according to the invention comprises a holder housing which can be connected to one of a door and a door frame, and a door holding rod which passes through an opening of the holder housing and which can be connected in an articulated manner to the other of the door and door frame. Here, the door holding rod has at least one braking surface, with at least one braking member that is displaceable in the direction of the at least one braking surface being arranged on the holder housing, which can be brought into contact with the at least one braking surface of the door holding rod at least in sections and thus a primary braking force component against the displacement of the Door support bar generated. The door holding rod furthermore has at least one guide surface inclined to the braking surface, at least one guide member being arranged on the holder housing and having at least one guide surface can be brought into contact in some areas and generates a secondary braking force component against the displacement of the door holding rod.

By providing a secondary braking force component that supports the primary braking force component, it is possible to achieve higher holding forces for the door holding rod and thus for the door than is possible with door locks from the prior art. The secondary braking force component can be lower, higher or as high as the primary braking force component. However, the secondary braking force component is preferably not greater than the primary braking force component and particularly preferably is not greater than half of the primary braking force component. The primary braking force component is essentially achieved by pushing back the spring-loaded brake members, which are tensioned to a greater or lesser extent with the corresponding section depending on its thickness. Here, the corresponding section can be increased quite significantly compared to the starting position, since it is possible to form the sections on the braking surfaces of the holding rod with appropriate thicknesses. The opening should then be appropriately high.

The primary braking force component is defined as the sum of all braking forces that have been generated between brake members and braking surfaces, while the secondary braking force component is defined as the sum of all braking forces that have been generated between guide members and guide surfaces.

The door arrester according to the invention is lightweight and compact and does not take up any larger installation space than the door arrester from the prior art. In particular, it is possible to design the door holding rod of the door arrester to be narrow, so that an increase in force by means of a further braking element, which acts on the same braking surface, is not necessary.

The holding rod thus advantageously enables the primary braking force component and the secondary braking force component to be set independently of one another by the design of the door holding rod, and opens up new design options for the design of the holding force profile of the door by superimposing or adding the two braking force components. For example, the one of the guide surface and the braking surface can define locking recesses at certain intervals, while the other of the guide surface and the braking surface sets a steadily increasing or decreasing braking force. It is therefore possible that sometimes the primary braking force component and sometimes the secondary braking force component achieve a larger proportion of the braking force resulting from the sum of the two braking force components. It is also possible to select the material properties or the roughness differently in the area of the guide surface and the braking surface in order to influence the friction coefficients correspondingly into the braking force component. According to the invention, it is provided that the guide member is designed as a pin, the pin being received in a guide part of the holder housing. The pin provides part of its outer contour for engagement with the guide surface and is otherwise held in the guide part. As a result, the rather inelastic pin also transfers forces from the guide surface into the holder housing.

According to the invention, it is provided that an end face of the pin protrudes into the opening of the holder housing or at least limits it. The end face is then intended for contact with the respectively assigned guide surface, the transition from the end face to the cylindrical lateral surface of the pin being rounded off in order to facilitate the entry. In this case, the pin can have a diameter which corresponds approximately to the minimum thickness of the holding rod, so that the surfaces which come into contact with one another are maximized. The design of the guide member as a pin that protrudes axially into the opening further offers the advantage that the pin can be designed with a spherical tip with a flat, central part that does not have too large a diameter, so that the further function of the guide members, namely to accomplish a certain curve guidance of the curved door holding rod, is little disturbed. If the pin is provided axially in the direction of the opening, it is preferably designed as a solid material pin, since the end face then provides a large area in order to cooperate with the sliding guide surface.

The pin is expediently pressed into a corresponding bore in the guide part of the holder housing, but can also be screwed, glued or otherwise positively inserted into it.

According to another inexpensive alternative, the pin can also be injected into the corresponding guide part of the holder housing if this is produced by the injection molding process. Then the extremities of the pin are expediently flush with the guide part, so that the pin does not protrude into the opening, but limits it at the height of the holding rod.

The brake members are expediently axially displaceable in a bore and can thus perform a fairly large stroke. The prestressing of the brake members is expediently carried out by a separately assigned spring.

The number of braking surfaces and the number of guiding surfaces are expediently the same for a door arrester, so that two braking surfaces are also provided in the case of two guiding surfaces. However, it is possible to provide the number of guide surfaces and the number of braking surfaces of different sizes, for example if the door holding rod has a hexagonal profile in cross section and one of the opposing pairs, in particular the broad sides, each form a braking surface, while the other four Form edges of guide surfaces. According to an alternative embodiment, it can also be provided that the holding rod has a triangular profile in cross section, the upper side forming the braking surface, and the two further surfaces defining an angle with the upper side defining guide surfaces. However, it is preferred that the braking surfaces and the guide surfaces face each other enclose a right angle so that practically no components act counter to the forces acting on a braking surface and a guide surface.

The door holding rod preferably has two braking surfaces facing away from each other in pairs and two guide surfaces facing away from each other in pairs, and is equipped, for example, with a profile which is rectangular in cross section. Accordingly, in a preferred embodiment, the holder housing also has two brake members facing each other in pairs and two guide members facing each other in pairs. The axially movable brake members are also advantageously arranged on the same axis of movement, while there are different possibilities for the arrangement of the guide members.

Expediently, each of the two braking surfaces can be brought into contact with one braking member, and each of the two guiding surfaces can be brought into contact with one guiding member. Whether a contact is made depends on the local nature of the door support rod, which can be moved back and forth in an opening in the holder housing.

According to a preferred embodiment, it is provided that the at least one brake member is biased by a spring in the direction of the at least one braking surface, and that the at least one braking surface has a height profile which is uneven in height over the course of the door holding rod, the increasing height of the Height profile the spring of the at least one brake member is tensioned. The spring will generally have a very high spring stiffness, which means that if the spring is tensioned, the primary braking force component turns out to be quite high.

The at least one brake member is preferably biased by a spring in the direction of the at least one braking surface, so that the braking member can carry out an axial stroke when it passes over sections of the braking surface which are of such a large height that the spring is tensioned. The at least one braking surface preferably has a height profile which is uneven in height over the course of the door holding rods and which can contain sections in which the spring is tensioned as well as those in which the spring is relaxed. As a result, the primary force component can be influenced particularly favorably by the choice of the height profile or the configuration of the corresponding sections of the braking surface. As the height profile increases, the spring is increasingly tensioned.

According to a preferred development, it is provided that two opposite guide elements are arranged on the holder housing, which can be brought into contact with at least some areas of two mutually facing guide surfaces of the holding rod, and that the two guide surfaces have an excess in at least one area compared to the two guide elements. In order to move the oversized guide surfaces past the guide members, it is necessary to apply a higher force to the system of the holder housing, which either resets a pretensioning device that loads the guide members or deforms the entire system of the holder housing in such a way that the support rod moves leaves. In this way, a secondary braking force component can be produced particularly advantageously, in particular if no separate spring arrangement is provided for the guide members.

According to another variant, it is provided that a radial peripheral surface of the pin protrudes into the opening or at least delimits the opening. The part of the pin which faces the door holding rod radially, as a rule a peripheral section, then comes into contact with the guide surface in order to brake the holding rod. According to a first preferred implementation, the pin is formed from a solid material and is positively connected or injected with the guide part of the holder housing. But it is also possible to insert the pin into a recess and then secure it with a pin that penetrates the pin. The The circumferential contour of the pin can be chosen as desired, but is preferably polygonal, in order to prevent rotation in the corresponding receptacle of the holder housing and at the same time to provide a contour adapted to the guide surface. It is also possible, however, to design the pin with a round circumferential contour, which ensures that the holding rod can be advantageously led into the opening, in particular of ramps provided on the guide surface.

According to an alternative embodiment, it is provided that the guide member is connected to the holder housing as a covering or as a covering part, which is preferably resiliently biased into its initial position. Here, the guide member on its side facing away from the guide surface of the holding rod can be equipped with a strut which is accommodated in the holder housing, for example mortised or clipped. Alternatively, the cladding can also be glued to the corresponding part of the holder housing. Finally, the covering can also be injection molded onto the side of the guide part of the holder housing that delimits the opening. A particular advantage of the design as a cladding is that it leads the holding rod favorably in the direction of the opening and is also quite insensitive to contamination.

According to an expedient perfection, the guide member is designed as a surface region formed with a guide part of the holder housing, so that the guide member is not to be connected to the guide part as a separate part, but rather provides the surface region forming the guide member on the engagement surface of the guide part. As a result, the holder housing can hardly be distinguished from the outside from a holder housing from the prior art. The holder housing designed in this way can also be used in vehicles which have a door holding rod which does not have an excessively equipped area, so that the corresponding holder housing can often be installed. Compared to the guide members designed as pins, this variant is comparatively easy to manufacture. At least that The surface region is free of fiber reinforcements. The surface region advantageously comprises the saddle area of the guide part facing the guide surfaces with a small thickness. The surface region advantageously extends over the entire height of the opening, but it is possible to provide it only in a central region of this height. The surface region preferably formed from polyether ether ketone can be connected to the guide part by injection molding onto a solid part, but also by selective coating or heat treatment with laser. In the case of injection or injection, the ends of the surface region advantageously protrude into the area of the housing parts guiding the brake members and are thereby advantageously anchored.

The guide member is preferably clamped against the guide surface. The tension is optionally by the internal tension of the guide member, if this is designed, for example, as a thin-walled covering part or as a load foot. Alternatively or additionally, the deformable holder housing tensions the guide member connected to the holder housing, in particular a guide part of the holder housing, and thus generates the pretension of the guide member in the direction of the guide surface. If the guide surface is displaced along the guide member, the guide member is displaced or deflected, so that the excessively dimensioned holding rod can be displaced past the guide members.

According to a favorable embodiment, it is provided that pins made of steel or an elastic material are received in the holder housing and load the guide parts having guide members in the direction of the holding rod. The pins can be received in, for example, slightly oblique holes in the other parts of the holder housing and thus have a curvature or pretension in the direction of the opening.

According to an inexpensive modular design, it is provided that the guide member on a separate guide part of the holder housing is provided, and that the separate guide part can be assembled with further individual parts of the holder housing to form the holder housing. This advantageously makes it possible to arrange the guide member on or in the guide part before it is assembled, which increases the ease of installation of the holder housing as a whole. Furthermore, the holder housing can be essentially composed of two guide parts and two housing parts receiving the brake members, so that there is a small variety of parts.

Preferably, the holder housing is surrounded by a circumferential reinforcing frame, which encloses at least three sides of the holder housing, which absorbs the forces transmitted from the guide surfaces of the holding rod to the guide members and thus the holder housing and prevents breakage or damage to the holder housing. The holder housing stiffens in particular the area of the connection of the guide parts with further housing parts.

In a further embodiment, it is then advantageously provided that the further housing parts have bolts which at least partially penetrate the guide parts and thus limit their movement away from the opening. As a result, the break-sensitive area of the transition from the further housing parts to the guide parts is advantageously further stiffened. According to a particularly favorable variant, it is provided that the bolts each penetrate the housing from top to bottom and are riveted to holding plates of the housing parts at least at one end, preferably at both ends.

The holding rod can have any contours that are suitable for the purpose of locking the door, so that a multitude of braking and holding characteristics of the door can be set. In particular, the holding rod can contain a metal core and can be equipped with a plastic covering on the guide surfaces and / or the braking surfaces.

The guide members are preferably designed as sliding sections, which are arranged on the holder housing largely without torque, the secondary braking force component then being set by the coefficient of friction of the friction pairing. As a result, the guide member introduces forces evenly into the holder housing or its guide parts. Furthermore, the guide members are preferably not displaceable with respect to the holder housing, so that no longitudinal guide in the manner of a bore has to be provided on the holder housing, as a result of which forces acting on the guide members can be introduced directly into the holder housing. According to an alternative embodiment, it is provided that the guide member is designed as a roller which is rotatably mounted in a guide part, the roller with its roller circumference coming into engagement with the guide surface. For this purpose, the roller circumference can have a recess which centers the retaining rod in a wedge-shaped or U-shaped manner and which centers the retaining rod with respect to the center of the roller periphery. For this purpose, the roller is expediently mounted on a roller bearing, for example one of the bolts already described, the axial displacement introduced into the roller by the guide surfaces being absorbed by the roller bearing.

The guide members are expediently arranged centrally with respect to the height of the opening, and thus advantageously in the position in which the door holding rod also extends. However, it is possible for the guide members to cover the entire height of the opening or essential parts thereof, so that their ends can be more easily countersunk in the holder housing.

Further advantages, developments, properties and implementations of the invention result from the following description of preferred exemplary embodiments and from the dependent claims.

Fig. 1

zeigt eine perspektivische Ansicht eines Ausführungsbeispiels eines nicht erfindungsgemäßen Türfeststellers.

Fig. 2

zeigt das Haltergehäuse des Türfeststellers aus Fig. 1 in einer perspektivischen Ansicht.

Fig. 3

zeigt ein Ausführungsbeispiel eines nicht erfindungsgemäßen Türfeststellers.

Fig. 4

zeigt eine vergrößerte Einzelheit des Türfeststellers aus Fig. 3.

Fig. 5

zeigt eine perspektivische Ansicht eines Haltergehäuses eines bevorzugten Ausführungsbeispiels eines erfindungsgemäßen Türfeststellers.

Fig. 6

zeigt eine Variante des Haltergehäuses aus Fig. 5.

Fig. 7

zeigt eine perspektivische Ansicht eines Haltergehäuses eines Ausführungsbeispiels eines nicht erfindungsgemäßen Türfeststellers.

Fig. 8

zeigt eine perspektivische Ansicht eines Haltergehäuses eines Ausführungsbeispiels eines nicht erfindungsgemäßen Türfeststellers.

Fig. 9

zeigt eine Variante des Haltergehäuses aus Fig. 8.

Fig. 10

zeigt eine Variante des Haltergehäuses aus Fig. 1 und 2.

In Fig. 1 ist ein Türfeststeller 10 in perspektivischer Ansicht gezeigt, der eine Türhaltestange 20 und ein Haltergehäuse 30 aufweist, wobei die Haltestange 20 über ein Gelenk 21 mit einem Beschlag 22 zum Festlegen an eine nach außen weisende Seite eines als strichpunktierte Linie 1 angedeuteten Türrahmens gelenkig verbunden ist. Das Haltergehäuse 30 ist auf einer nach innen weisenden Seite der als strichpunktierte Linie 2 angedeuteten Tür angeschlossen und weist eine zentrale Öffnung 31 auf, durch die die Haltestange 20 hindurchgeführt ist. Das Haltegehäuse 30 ist als Spritzgussteil ausgebildet, das zumindest teilweise eine Faserverstärkung aus Glas- oder Aramidfasern aufweist.The invention is explained below with reference to the accompanying drawings using preferred exemplary embodiments.

Fig. 1

shows a perspective view of an embodiment of a door stay not according to the invention.

Fig. 2

shows the holder housing of the door holder Fig. 1 in a perspective view.

Fig. 3

shows an embodiment of a door lock not according to the invention.

Fig. 4

shows an enlarged detail of the door arrester Fig. 3 ,

Fig. 5

shows a perspective view of a holder housing of a preferred embodiment of a door arrester according to the invention.

Fig. 6

shows a variant of the holder housing Fig. 5 ,

Fig. 7

shows a perspective view of a holder housing of an embodiment of a door lock not according to the invention.

Fig. 8

shows a perspective view of a holder housing of an embodiment of a door lock not according to the invention.

Fig. 9

shows a variant of the holder housing Fig. 8 ,

Fig. 10

shows a variant of the holder housing Fig. 1 and 2 ,

In Fig. 1 a door retainer 10 is shown in perspective view, which has a door holding rod 20 and a holder housing 30, the holding rod 20 being connected in an articulated manner via a joint 21 with a fitting 22 for fixing to an outwardly facing side of a door frame indicated as a dash-dotted line 1. The holder housing 30 is connected on an inward-facing side of the door indicated as a dash-dotted line 2 and has a central opening 31 through which the holding rod 20 is passed. The holding housing 30 is designed as an injection molded part, which at least partially has a fiber reinforcement made of glass or aramid fibers.

The holding rod 20 has an end stop 23 at the end facing away from the articulation 21, which is dimensioned sufficiently large to prevent that the support rod 20 can slide through the opening 31. When the door is fully open, the end stop 23 strikes against stop members 32 of the holder housing 30, which are arranged on both sides of the opening 31 and accordingly allow damping of the collision of the stop 32 and holder housing 30 and a reduction in noise.

The holding rod 20 has a slightly curved shape, which is slightly adapted to the radius around the hinge axis of the door 2 and the door frame 1, so that the door holding rod 20 can be moved through the opening 31 of the holder housing 30 with little effort. Here, the part of the door holding rod 20 that passes through the holder housing 30 is also received in the interior of the door 2, so that the curvature is advantageously flatter than the radius of the articulation of the door 2 in order not to unnecessarily increase the width of the door 2 enlarge.

The door holding rod 20 basically has a rectangular cross section, the upward and downward broad sides each forming two elongated braking surfaces 24a, 24b, while the narrow sides arranged transversely thereto form guide surfaces 25a, 25b of the holding rod 20.

The braking surfaces 24a, 24b can be divided into several sections in their course from the linkage 21 to the end stop 23, a first section 40 can be referred to as a freewheeling section or closing aid, in which the holding rod 20 in the holder housing 30 without resistance in the direction of its extension can be moved. A second ramp section 41 is characterized by ramps arranged on both braking surfaces 24a, 24b, a ramp section 41 being shown in the present case, but it should be understood that a plurality of inclines in the manner of a ramp can also be provided in the ramp section 41, including those which rise or fall in the direction of the stop 23 towards a thicker holding rod 20 and towards the stop 23 towards a less thick holding rod 20. At the slope section 41 is followed by a gripping section 42, in which the thickness the support rod 20 is selected so that it is held in the holder housing 30 with a certain force. Finally, in front of the stop 23 there is also an end section 43 formed with a recess 46, which defines a holding position of the door 2 and in which the holding rod 20 is provided in both directions with gradients increasing towards a thicker dimension.

The sections 40, 41, 42 and 43 can also be represented in a different order or with different dimensions, in particular it is possible that these sections extend over the entire width of the braking surfaces 24a, 24b and not only over a part of them, as in FIG Fig. 1 shown. Furthermore, more recesses can be provided in the sections than the recess 46 from the end section 43. It is also possible to provide only some of the sections mentioned, or some sections several times. Sections other than those mentioned can also be provided.

The sections 41, 42, 43 generate, as will be explained in more detail below, with the holder housing 30 a primary braking force component against the displacement of the door holding rod 20.

It can also be seen that the guide surfaces 25a, 25b of the holding rod 20 additionally have a widened region 49, with an inlet 49a and an outlet 49b, over the extent of the gripping section 42. The widened area 49 projects on both sides of the guide surface 25a, 25b and, as will be explained in more detail below, causes the widened area 49 to generate a secondary braking force component against the displacement of the door holding rod 20 with the holder housing 30.

The holder housing 30 has two planar surfaces 31a arranged opposite one another in pairs and facing the braking surfaces 24a, 24b of the holding rod 20, each of which has one of the central recesses 33 ( Fig. 2 ) limit formed housing parts 34 of the holder housing 30, wherein in the Recesses 33 a brake member 50 and a spring member biasing this is received. I support the spring member against a bearing plate 52 inserted into a slot 36 of the housing part 34a, 34b, so that the brake member 50 is prestressed in the direction of the braking surface 24a, 24b facing it. The brake members 50 have a spherical surface, which is extended by an approximately cylindrical casing section, the cylindrical casing section allowing axial displacement in a bore 33a opening into the recess 33. The cylindrical casing section is hollow so that the spring can be supported in the cylindrical casing section without the spring being able to cause friction noise with the peripheral wall of the central bore 33a. The spring is designed, for example, as a coil spring, but it is also possible to provide a plate spring package for this. The outer circumferential wall of the cylindrical casing section has circumferential corrugation which extends in the direction of movement, and a radially projecting anti-rotation device is also formed on the cylindrical casing section, which cooperates with a longitudinal groove in the bore 33a to ensure that the brake member 50 only axially can move.

The holder housing 30 is produced as a one-piece plastic part, the brake members 50 and springs being insertable through a central opening 37 provided in the upper and lower end faces facing away from the surfaces 31a, after the insertion the locking plate 52 into a slot 36 crossing the hole 33a is introduced. It is possible to insert the door holding rod 20 into the recess 31 when the brake members 50 and the springs are inserted. Alternatively, it is possible to design the bore 33a as a blind hole that has no opening 37.

The holder housing 30 is in Fig. 2 shown without a support rod 20 and brake members 50 as well as springs and locking plates 52 in order to be able to better recognize otherwise hidden details.

The holder housing 30 is mirror-symmetrical with respect to a central plane through which the holding rod 20 can also be displaced, so that a brake member 50 is arranged both on the top and on the bottom, and these two together with the brake surfaces 24a facing them, 24b generate a primary braking force component against the displacement of the door holding rod 20 when the holding rod 20 is displaced along the brake members 50 which are acted upon by the springs. This is particularly the case in sections 41, 42, 43, while the thickness of the holding rod 20 in the freewheeling section 40, which is defined by the distance between the braking surfaces 24a, 25a, is dimensioned such that there is no or practically no contact with the brake members 50, so that the door 2 can slide into the door lock even when a small force is applied.

The two housing parts 34 are connected to one another via two guide parts 35 of the holder housing 30 arranged in mirror image with respect to a vertical plane and on both sides of the opening 31, in the region of which the outer wall 38 of the holder housing 30 is flat. In the present exemplary embodiment, the guide parts 35 are designed in the manner of a saddle roof, so that the apex of the saddle runs approximately at the level of the opposite recesses 33 or the central axis of the bores 33a. This ensures that the holding rod 20 is guided in the area of the brake members between the two guide parts 35.

In the present exemplary embodiment, in the region of the saddle of the guide parts 35, a guide member 35a, 35b designed as a covering part is clipped on, which is designed as a thin-walled clamp, which also has a gable roof-like shape ( Fig. 2 ) having. On the rear side, the clip has a web 351 which is intended to be clipped into a corresponding groove in the guide part 35. The guide members 35a, 35b are in this case a bit resilient and thus flexible, with their outward-facing side facing the guide surfaces 25a, 25b and guide them at an angle of 90 ° to the brake members through the opening 31. The distance between the guide members 35a, 35b is larger than that Width of the holding rod 20 outside the area 49, which can be measured as the distance between the two guide surfaces 25a, 25b. In the area 49, on the other hand, the width of the holding rod 20 is greater than the distance between the mutually facing outer surfaces of the guide members 35a, 35b, so that whenever the section 50 comes into contact with the guide members 35a, 35b, the holding rod 20 is pressed that generates a secondary braking force component against the displacement of the door support rod 20.

The difference in thickness between the area 49 and the adjacent areas of the narrow side of the holding rod is approximately 8 mm. In the adjacent areas of the support rod 20, it fits straight through the guide members 35a, 35b, so that each of the two guide members 35a, 35b has to move back about 4 mm. This is achieved on the one hand by the resilient reception of the guide members 35a, 35b on the guide part 35, but on the other hand a deformation of the holder housing 30 is required for this as a whole, so that the force required to displace the door holding rod is significantly increased compared to the force which the primary system is generated from brake members 50 and brake surfaces 34a, 34b. Outside the area 49, on the other hand, the holding rod 20 slides through the opening 31 which is then provided with an oversize, as in the case of door locks from the prior art, without generating a secondary braking force component.

In any case, at least the area 49 and the guide members 35a, 35b are selected from such a material that the material thicknesses do not change even with numerous back and forth movements, so that there is practically no significant change in the secondary braking force component over time due to abrasion or the like , For this purpose, at least one of the guide members 35a, 35b and region 49 is designed without fiber reinforcement, since the fibers tend to process the other region 49 in an abrasive manner.

It should be noted that the guide member 35a, 35b resiliently on the respective guide part 35 of the holder housing 30 is connected, so that the guide member 35a, 35b is biased at the same time by a spring arrangement. However, it is also possible to arrange the guide member 35a, 35b rigidly on the guide part 35, for example by gluing, injection molding, riveting or the like, as described below with reference to FIG Fig. 7 still explained.

With the in Fig. 2 The arrows F shown indicate the force component generated by the guide members 35a, 35b when the door holding rod 20 spreads this or the holder housing 30 through the region 49.

Fig. 3 and 4 show a further exemplary embodiment of a door arrester 110, the same or structurally comparable components as in the exemplary embodiment according to FIG Fig. 1 and 2 have the same reference numerals and components with changed features with 100 compared to the embodiment of FIG Fig. 1 and 2 are incremented.

The door arrester 110 is designed for a different load and has a different holding profile than the door arrester 10 Fig. 1 and 2 , For example, its door holding rod 120 has a plurality of latching depressions 46 in its gripping section 42 on one braking surface 24b. The opposite side is designed as a mirror image as a braking surface 24a, and is not drawn in all details only for better illustration of details. Furthermore, the holding rod 120 has a substantially constant width, so that no area 49 is provided on the guide surface 24a. The braking surfaces 24a, 24b are acted upon as a mirror image from both sides by a braking member 50, which is acted upon by a spring 51 which is supported against an abutment 152. The abutment 152 is a metal plate which is injected into the holder housing 130 and which is displaced the support rod 120 and pushing back the brake members 50 supports the spring 51.

The holder housing 130 is also injection molded from a single piece of fiber-reinforced plastic, with recesses 39a on an end face 39, which is intended to bear against the door 2, for receiving fastening means are provided.

In the area of a side wall 138, which is approximately aligned with the guide surface 25a, a guide member 135a is formed as a slider made of plastic without fiber reinforcement, the slider being injected into the wall 138 of the holder housing 130. While the proximal end of the guide member 135a is fixed to the abutment wall 138, alternatively is also clamped, the distal end of the guide member 135a forms an angled end, which is under tension with the guide surface 25a and forms a loading arm. The guide member 135a then forms a friction pair with the guide surface 25a, which generates a second force component that opposes the displacement of the door holding rod 120.

One recognizes in Fig. 4 that the guide member 135a covers about half the width of the door support bar 120. A guide member 135a is expediently connected on the side of the mirror-image, sectioned housing part 134 in the same way as a slide made of plastic without fiber reinforcement, so that two guide members 135a load the guide surface 25a. In the same way, the guide surface 25b on the opposite side of the holder housing 130 is assigned two guide members 135b. Again, the brake members 50 and brake surfaces 24a, 24 generate a primary braking force component, while the guide members 135a, 135b and the guide surfaces 25a, 25b generate a secondary braking force component. Since the profile of the guide surfaces 25a, 25b is formed uniformly without elevations or areas 49, the secondary braking force component is constant over the extent of the holding rod 120

Fig. 5 FIG. 4 shows a further exemplary embodiment of a door arrester 210, the same or structurally comparable components as in the exemplary embodiment according to FIG Fig. 1 and 2 have the same reference numerals and components with changed features with 200 compared to Embodiment according to Fig. 1 and 2 are incremented. The one with the support rod 20 Fig. 1 identical handrail is not shown again. The circumferential corrugation 50a of the brake member 50 can be seen.

The holder housing 230 differs from the holder housing 30 Fig. 1 and 2 in that the guide parts 35 in the area of their saddle, halfway up the opening 31, each have a guide member 235a, 235b designed as a pin, the pin protruding into the opening 31 with its spherical tip 2351 having a flattened central section 2352, whereby the tip 2351 comes into engagement with one of the guide surfaces 25a, 25b. The pin 235a, 235b is constructed symmetrically and therefore of the same design at both ends or tips, so that it can be used on both housing parts 35 in both directions.

The pin 235a, 235b is pressed into the material of the guide parts 35 and is thus held firmly on the holder housing 230. However, it is also possible to screw the pin in, to inject it, to glue it in, or to hold it with a positive fit with an undercut. The pressing in has the advantage that the penetration depth of the pins 235a, 235b can be calibrated depending on the application on the same holder housing. If the pin 235a, 235b is screwed in, the corresponding bore in the guide part 35 is provided with a thread by screwing in, so that no change in the screw-in depth by adjustment is possible in use.

If the holding rod 20 has an area 49, there is an interference fit with the guide members 235a, 235b, so that the holder housing 230 must be spread out or at least deformed so that the holding rod can be displaced in the opening 31, as a result of which a secondary holding force is generated. It can be seen that the guide member 235a, 235b is predominantly received in the guide part 35, so that there is no fear of breaking out upon contact with the door holding rod 20.

The opposing pins 235a, 235b are aligned with each other, and whose common main axis crosses the common main axis of the bores 33a receiving the brake members.

It is possible to provide the holder housing 230 with a steel spring cage for further stiffening, which also reduces the risk of a load break. If the cage surrounds the tips of the pins 235a, 235b facing away from the holding rod 20, these can even be inserted into corresponding bores in the guide parts 35 without a fixed connection. The pin 235a, 235b is each made of polyether ether ketone (PEEK), the melting point of which is not reached even with repeated friction with the holding rod 20.

Fig. 6 shows a variant of a door arrester 210 ', the same or structurally comparable components as in the embodiment according to Fig. 5 have the same reference numerals, and only the differences are discussed. The guide members 235a ', 235b' designed as pins are injected into the guide parts 35 in the present exemplary embodiment, so that a different geometry of the pins 235a ', 235b' is expedient, which does not come from the surface of the guide part 35 or protrude from surface 38. For this purpose, the tip of the pin 235b 'is formed with a nose 2356 which is aligned with the saddle of the guide part. The back of the non-symmetrical pin 235a ', 235b' is flat and flush with the surface 38.

Fig. 7 FIG. 4 shows a further exemplary embodiment of a door arrester 310, the same or structurally comparable components as in the exemplary embodiment according to FIG Fig. 1 and 2 have the same reference numerals and components with changed features with 300 compared to the embodiment of FIG Fig. 1 and 2 are incremented. The one with the support rod 20 Fig. 1 identical handrail is not shown again. The circumferential corrugation 50a of the brake members 50 can be seen.

In contrast to the previous exemplary embodiments, this is Holder housing 310 is not produced as a one-piece part in the plastic injection molding process, but instead has separate upper and lower housing parts 334 and guide parts 335, which together delimit the opening 31 for the holding rod 20. The aforementioned parts 334, 335, which are each formed as injection molded parts made of plastic, can be plugged together to form the holder housing 310, the housing parts 334 having projecting pins 61 made of metal, which can be inserted into bores 62 of the guide parts 335 in order to stiffen the connection , Furthermore, approximately triangular projections 63 formed in one piece on the guide parts 335 can be received in complementarily shaped depressions 64 of the housing parts 334. It can be seen that the housing parts 334 and the guide parts 335 are identical in pairs, so that only two types of parts are required to assemble the holder housing 310. It is possible to glue the parts 334, 335 additionally or alternatively. A pin can also be inserted into the parts 334 as a safety pin, which penetrates a hole in the pin 61. In order to give the holder housing 310 the required stability, a circumferential steel spring cage is then stretched around all four parts 334, 335.

The guide member 335a, 335b is in the present case as in the exemplary embodiment Fig. 1 and 2 formed as a clamp, but to which the material of the guide part 335 has been injection molded in the present case. The guide member 335a, 335b is therefore not movable with respect to the guide part 335. However, it is also possible to design the guide member on the guide part 335 as in one of the other exemplary embodiments.

Fig. 8 FIG. 4 shows a further exemplary embodiment of a door arrester 410, the same or structurally comparable components as in the exemplary embodiment according to FIG Fig. 7 have the same reference numerals and components with changed features by 100 compared to the embodiment of FIG Fig. 7 are incremented. The one with the support rod 20 Fig. 1 identical handrail is not shown again.

It can be seen that the holder housing 430 can in turn be composed of two housing parts 434 and two guide parts 435, whereby instead of the projections 61, continuous pins 461 couple the two housing parts 434 and one of the two guide parts 435 which rivets on the abutment plate 452 become.

The pin 461 also passes through a guide member 435a, 435b which is designed as a hollow pin and is each injected into the guide part 35. The radial circumferential surface of the guide member 435a, 435b is aligned with the surface of the guide part 435 facing the opening 31 and forms a friction pairing with the guide surface 25a, 25b of the holding rod 20, the pins 461 forming a type of prestressing spring. The pins 461 thus absorb the majority of the loads generated by the deformation of the holder housing 430.

Fig. 9 shows a variant of the holding housing 430 ' Fig. 8 , so that the same reference numerals as in Fig. 8 denote the same or structurally comparable parts.

In contrast to Fig. 8 the guide member 435a 'is not injected into the guide part 35, but can be inserted with opposite flat sides 72 into a recess 71 in the surface 38. A thickening 461a on the pin 461 holds the guide member 435a ', 435b' with a press fit in its bore 62. In addition to its opposite flat sides 72, the guide member 435a ', 435b' also has two circumferential engagement curves, some of which extend out of the opening 31 protrude the facing side of the guide part 435 or at least limit the opening 31 by being flush with the side of the guide part 435 facing the opening 31. It is also possible to form the thickening 461a and the bore 62 each with a prismatic cross section, as a result of which a rotation lock would be provided between the pin 461 and the guide member 435a ', 435b'. If the recesses 71 then have a play on the flat sides 72, the forces introduced by the guide surfaces essentially become received by the pin 62 so that the risk of breakage for the holder housing 430 'is reduced. It is also possible to make an axially protruding pin such as pin 235a, 235b Fig. 5 to connect to the pin 62.

Fig. 10 shows a variant of the holding housing 30 ' Fig. 1 and 2 , so that the same reference numerals as in Fig. 1 and 2 denote the same or structurally comparable parts.

In contrast to the guide members 35a, 35b formed as a covering part Fig. 1 and 2 The guide member 35a ', 35b' is realized in the present case by a surface region which spans the entire height of the opening 31 and which is rigidly formed on the guide part 35. In the present case, the surface region 35a ', 35b' is produced by injection molding a thin-walled strip-like section onto the guide part 35, but it can also be designed as a pin embedded at this point or as an applied film. Furthermore, the surface region 35a ', 35b' can be tempered by treating the surface with thermal or chemical processes. It is also possible to form a partial region of the guide part 35 containing the surface regions 35a ', 35b' from the material of the surface regions 35a ', 35b', in the present case not fiber-reinforced PEEK.

The surface region 35a ', 35b' is advantageously not rigidly connected with respect to the guide parts 35 of the holder housing 30 'and is therefore different from the cladding parts 35a, 35b Fig. 1 and 2 also not movable relative to these, as a result of which the counterforce for the expansion through the regions 49 of the door holding rod 20 is provided by the system defined by the holder housing 30 '. Furthermore, the holder housing 30 'can be made narrow in the region of the guide parts, so that the mass of the holder housing 30' and the required installation space in the door 2 are small.

The holder housing 30 'differs from holder housings made of plastic from the prior art by the dedicated one Surface region 35a ', 35b' that can generate a braking force component.

In the case of holder housings produced in one piece, the transition region from the guide parts 35 to the housing parts 34 can be formed with a fiber reinforcement which better absorbs the tensile stresses generated by the press fit of the guide surfaces 25a, 25b and the guide members 35a, 35b, which can be critical in the case of plastic parts and redirected a bit.

The function of the door arrester is basically the same in all exemplary embodiments. The primary braking force component and the secondary braking force component are designed essentially by the configuration of the sections and regions of the holding rod. Each holder housing can be used for different door holding characteristics if only the handrail is adjusted.

The invention has been explained above on the basis of various exemplary embodiments of guide members and holder housings. It goes without saying that each holder housing can in principle be combined with each of the guide members described, and that these combinations are also part of the disclosure of the present application.

The invention has been explained above on the basis of exemplary embodiments in which the braking surfaces of the door holding rod have a mirror-image profile, that is to say that ramp sections etc. are provided on both braking surfaces. It goes without saying that it is also possible for only one of the two braking surfaces to have such a profile, while the other is essentially smooth. In this case, it is also only necessary that the braking member facing the profiling can be moved to this profile in a biased manner by a spring. The end of the holder housing opposite the brake member can then be designed as a planar support surface, but also as a locally variable or axially adjustable brake member.

The invention has been described above with reference to exemplary embodiments in which the braking surface is formed on the broad side of the holding rod and the guide surface on the narrow side of the holding rod. It goes without saying that this can also be reversed and that in particular the holding rod can also have an approximately square profile, in which the extensions of the braking surface and the guide surface are approximately the same.

The invention has been explained above on the basis of exemplary embodiments in which the brake member can be displaced axially in a longitudinal guide designed as a bore. It goes without saying that the brake member can also be advanced in the direction of the brake surface, for example by a brake member articulated on the holder housing, which is pivoted about its articulation axis and forms a brake shoe. Likewise, a roller loaded by a torsion spring or a ball held in a pan can be considered.

The invention has been explained above on the basis of exemplary embodiments in which the holder housing is either produced as a one-piece part from fiber-reinforced plastic by the injection molding process or is composed of two guide parts and two housing parts. It goes without saying that a guide part can also be formed in one piece with a housing part, so that two units each formed from a guide part and a housing part, in particular point-symmetrical and / or identically designed units, can be provided for assembling the holder housing.

The invention has been explained above on the basis of exemplary embodiments which have guide members which are fixed or only slightly movable and which are designed as sliders or sliding surfaces and on which the guide surfaces slide to produce a particularly high secondary braking force component. It goes without saying that it is possible to attend the To provide guide parts or in rotatably mounted guide parts provided in pins or pins along which the guide surfaces roll.

The invention has been explained above using exemplary embodiments in which the parts of the holder housing are made of plastic. It goes without saying that parts of the holder housing can also be formed from metal, which are either connected to the other parts by riveting or are molded onto the plastic material.

The invention has been explained above on the basis of exemplary embodiments in which the brake member has a hemispherical or spherical configuration. It goes without saying that, in the same way, the brake member can also have a nose-shaped end face, which has depressions as in FIG Fig. 3 illustrated can advantageously engage.

The invention has been explained above on the basis of exemplary embodiments in which a guide member is arranged on each guide part of the holder housing. It goes without saying that a plurality of guide elements arranged next to one another in the direction of movement of the holding rod can also be provided on each guide part. The two opposite arrangements of guide members can then be arranged in mirror image as well as offset by half a pitch in the direction of displacement of the support rod, in which a projecting guide member is arranged centrally between two opposite projecting guide members.

The invention has been explained above on the basis of exemplary embodiments in which the surface 38 of the guide parts 35 facing away from the guide members is approximately aligned with the lateral wall of the housing parts 34. It goes without saying that the guide parts can also be formed comparable to a housing part 34, so that the guide members also can be loaded in an axial guide by a spring and can be designed to be axially displaceable and the holder housing is essentially designed like a plus sign.

The invention has been explained above on the basis of exemplary embodiments in which the door holding rod has a first and a second guide surface. It is understood that the door support bar may further have a third and fourth guide surface if e.g. the cross section of the door support rod is hexagonal. It is possible to have each or only some of the guide surfaces cooperate with a guide member.

Claims (15)

1. A door holder, comprising

   a retainer housing (230), which is connectable to either a door (2) or a door frame (1), and

   a door retaining rod (20; 120), which penetrates an opening (31) of the retainer housing (230) and can be articulated with the other of door (2) and door frame (1),

   wherein the door retaining rod (20, 120) has at least one braking surface (24a, 24b; 124a, 124b),
   wherein at least one braking element (50) displaceable in the direction of the at least one braking surface (24a, 24b; 124a, 124b) is arranged on the retainer housing (230), which braking element can be brought into contact at least in sections (41, 42, 43) with the at least one braking surface (24a, 24b; 124a, 124b) of the door retaining rod (20; 120) and thus generates a primary brake force component against the displacement of the door retaining rod (20; 120),
   wherein the door retaining rod (20; 120) has at least one guide surface (25a, 25b; 125a, 125b) inclined in relation to the braking surface (24a, 24b; 124a, 124b),
   wherein at least one guide element (235a, 235b) is arranged on the retainer housing (230), which guide element can be brought at least in regions (49) into contact with the at least one guide surface (25a, 25b; 125a, 125b) and generates a secondary brake force component against the displacement of the door retaining rod (20; 120),
   characterized in
   that the guide element is formed as a pin (235a, 235b),
   that the pin (235a, 235b; 235a', 235b') is accommodated in a guide part (35) of the retainer housing (230), and
   that an end face of the pin (235a, 235b; 235a', 235b') protrudes axially into the opening (31) or at least delimits the opening (31).
2. The door holder as claimed in claim 1, characterized in that the at least one guide element (235a, 235b) is formed from plastic.
3. The door holder as claimed in claim 2, characterized in that the plastic comprises PEEK.
4. The door holder as claimed in any one of the preceding claims, characterized in that the at least one guide element (235a, 235b) is free of reinforcing fibers in the region of its contact with the guide surface (25a, 25b; 125a, 125b).
5. The door holder as claimed in one of claims 1 to 4, characterized in that the pin (235a, 235b; 235a', 235b') is received in a borehole of the retainer housing (230).
6. The door holder as claimed in claim 5, characterized in that the borehole has an axis which extends perpendicularly to an axis of the at least one displaceable braking element (50).
7. The door holder as claimed in claim 5 or 6, characterized in that the pin (235a, 235b; 235a', 235b') is screwed into the borehole of the retainer housing (230).
8. The door holder as claimed in any one of claims 1 to 7, characterized in that the pin (235a, 235b; 235a', 235b') has a rounded end face, which facilitates the sliding along the guide surface (25a, 25b).
9. The door holder as claimed in any one of the preceding claims, characterized in that the guide element (235a, 235b) is tensioned toward the guide surface (25a, 25b; 125a, 125b).
10. The door holder as claimed in any one of the preceding claims, characterized in that the at least one braking element (50) is pretensioned by a spring (51) in the direction of the at least one braking surface (24a, 24b; 124a, 124b), and that the at least one braking surface (24a, 24b; 124a, 124b) has a height profile extending unevenly in the height over the course of the door retaining rod (20; 120), and that with increasing height of the height profile, the spring (51) of the at least one braking element (50) is increasingly tensioned.
11. The door holder as claimed in any one of the preceding claims, characterized in that the door retaining rod (20; 120) has two braking surfaces (24a, 24b) facing away from one another in a pair, and that the door retaining rod (20; 120) has two guide surfaces (25a, 25b; 125a, 125b) facing away from one another in a pair.
12. The door holder as claimed in claim 11, characterized in that each of the two braking surfaces (24a, 24b; 124a, 124b) can be brought into contact with a braking element (50), and that each of the two guide surfaces (25a, 25b; 125a, 125b) can be brought into contact with a guide element (235a, 235b), respectively.
13. The door holder as claimed in claim 12, characterized in that the guide elements (235a, 235b) opposing one another in pairs define a shortest connecting straight line which intersects the displacement axis of the braking elements (50) opposing one another in pairs, such that the two lines span a plane.
14. The door holder as claimed in any one of the preceding claims, characterized in that two opposing guide elements (235a, 235b) are arranged on the retainer housing (230), which can each be brought into contact at least in some regions with two guide surfaces (25a, 25b; 125a, 125b) facing away from one another, and that the two guide surfaces (25a, 25b; 125a, 125b) have an oversize in relation to the two guide elements (235a, 235b) at least in a region (49).
15. The door holder as claimed in any one of the preceding claims, characterized in that the guide element (435a, 435b) is provided on a separate guide part (435) of the retainer housing (430), and that the separate guide part (435) can be assembled with further individual parts (434) of the retainer housing (430) to form the retainer housing (430).

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