EP3837411B1 - Door arrester - Google Patents

Description

The invention relates to a door check, in particular for a door of an automobile, comprising a door retaining rod which can be pivoted on one of the door and body of the automobile and has a first side and a profile formed on the first side, and one on the other of the door and body of the automobile arrangeable first brake body, which rests in sections on the first side of the door holding rod under a prestress and which defines at least one holding position with the profiling of the first side.

Door arresters are known from practice that are dimensioned to be sufficiently stable to be used as automobile door arresters. Such automobile door checks have a door retaining bar that can be pivoted on the door or body of the automobile and has a first side, in particular a broad side, on which a profile is formed, with the other side of the door and body of the automobile, usually on the door, a first brake body can be arranged, which rests in sections on the first side of the door retaining rod under pretension and which defines holding positions with the profiling of the first side, in particular when it penetrates depressions in the profiling, the brake body being guided circumferentially in a housing and biased toward the first side by a spring member, the spring member bearing within the housing. In this case, the door holding bar can be moved back and forth through an opening in the housing, but tends to tilt. Furthermore, the known automobile door check has a large overall height, which results from the fact that the brake body requires a certain extent in the direction of its displacement direction in order to avoid tilting. The number of parts is quite high, and the assembly effort is also great, because the brake body in particular has to be inserted into a guide hole in the housing. Due to the play that the door holding bar has in the opening of the housing depending on the angular position of the door, the acting forces cannot be reproduced and are therefore unequal. Furthermore, the known door retaining rods are designed with a curved extension, which compensates for the pivoting movements of the door around the body or a pillar of the body and which is intended to prevent any tilting.

WO 2006 089 528 A1 describes a door check for an automobile, in which a door retaining rod which can be pivotably mounted on one of the door and body has a first side on which a profile is formed. Furthermore, the door retaining rod has a second side, on which another profile that differs from the profile on the first side is formed. The door retaining rod can be passed through a housing formed with an opening, with a braking body which interacts with the first side of the door retaining rod and is prestressed by a spring being circumferentially accommodated in a receptacle and guided axially in the housing, with the braking body being equipped with a shaft part which is connected to a counter bearing in order to be able to move the shaft part and brake body out of engagement from the first side. Coaxially to the first brake body, a second brake body loaded in the direction of the second side of the door retaining rod is axially displaceable and circumferentially accommodated in a receptacle of the housing, which has a cylindrical casing section which has various openings so as not to tilt in the guide. A disadvantage of the known automobile door check is the fact that the door retaining bar must have greater play within the opening of the housing in order to allow a pivoting and a shifting movement, in order not to tilt as well. Furthermore, in order to avoid tilting, both brake bodies are each designed with a significant axial extension, as a result of which the overall height of the housing in the axis of movement of the brake bodies is very large. As a result, large moments occur, which mean that the housing must be designed to be quite massive. Furthermore, due to the back and forth movement of the door retaining bar in the receptacle of the housing, various friction noises arise, which reduce the ease of use of the automobile door check affect.

JP 2016 094 794 A describes a door check device for a door of an automobile, in which a door stay bar is pivotally connected to a door of an automobile. The door support bar has a rectilinear extension and a plurality of flat sections of different thicknesses increasing in the closing direction, which are separated from one another by vertical steps. An actuator with a drivable shaft is arranged on the body, which has two opposing threaded sections, with a cuboid block being arranged on each of the two threaded sections, with the motorized rotation of the shaft moving the two blocks in the direction of the door retaining rod or from the door retaining rod The lateral limits of the blocks in particular form a stop for the steps of the door retaining bar when the blocks are moved together and prevent the door from closing. When the blocks are moved apart, on the other hand, the door can be moved freely. The main disadvantage of the door locking device is that the blocks have to be guided laterally, otherwise they will rotate together with the shaft due to the locking of the thread when they are disengaged from the door retaining rod. Furthermore, the door arresting device is only able to block the door in the closing direction, but not in the opening direction. Furthermore, the shaft drive must be permanently energized so that the blocks do not turn the shaft back. There is no provision for the door retaining rod to be pivotable about the shaft, which would otherwise result in noise being generated due to friction of the thread on the opening.

DE 10 2014 018 333 B3 describes a door check for the door of an automobile, comprising a door retaining rod that can be pivotably mounted on one of the door and body, with a first and a second side, each of which has a profile, with a brake body also being arranged on the other of the door and body partially rests against the side of the door retaining bar under the preload of a spring and defines a holding position with the profiling of the side. The brake body is guided circumferentially in a cylindrical section and can be freely displaced axially under tensioning and relaxation of the spring in response to the profiling of the side of the door stay bar.

WO 2008 152 961 A1 shows a door check for a door of an automobile according to the preamble of claim 1, with a door retaining rod which can be pivoted on one of the door and body and has a first side and a profile formed on the first side, and with one which can be arranged on the other of the door and body first brake body, which is designed as a leaf spring and which rests in sections on the first side of the door retaining bar under its own pretension and which defines at least one holding position with the profiling of the first side, the first brake body having a central perforation, the door retaining bar having an elongated opening , and the central hole and the opening is penetrated by a guide pin.

It is the object of the invention to specify a door check that is compact and reliable to use.

According to the invention, this object is achieved by a door check with the features of independent claim 1 .

According to the invention, a door check is created, in particular for a door of an automobile, comprising a door retaining rod that can be pivoted on one of the door and body and has a first side and a profile formed on the first side, and a first brake body that can be arranged on the other of the door and body which rests in sections on the first side of the door retaining bar under pretension and which defines at least one holding position with the profiling of the first side, the door check being characterized in that the first brake body has a central perforation, with a guide pin passing through the central perforation and that the guide pin allows an axial movement of the first brake body along the guide pin.

This advantageously means that the first brake body no longer has to be guided on its circumference, so that it does not have the minimum volume required for this purpose. Furthermore, the guide pin can connect the brake body directly to the door or body of the automobile without a housing having to be provided that completely encompasses the brake body. As a result, the door check can be designed in particular with a small number of parts and small and therefore compact. The cost of producing the door check can be reduced as a result. Furthermore, weight is saved, so that the door check lowers the energy consumption of the automobile favorably.

The door check according to the invention is further characterized in that the door retaining bar has an elongated opening, that the opening is penetrated by a guide pin, and that the door retaining bar can be pivoted about the guide pin. This advantageously ensures that the door holding rod is centered by the guide pin and thus has only a small amount of play with respect to the parts of the door and body of the automobile and/or the brake body. The door retaining bar can then always be pivoted about two axes, namely the one axis with which it is coupled to one of the door and body and the axis of the guide pin about which the door retaining bar also pivots. As a result, it is advantageously possible to dispense with a housing that delimits the door retaining bar circumferentially within an opening in terms of its displacement movement, so that the door check is compact overall. Furthermore, by inserting the guide pin into the opening in the door retaining rod, the assembly of the door check is particularly simple and at the same time possible with precision.

The door check according to the invention is further characterized in that the guide pin is fixed to two holding sections, which can be connected to the other of the door and body of the automobile, so that the two holding sections couple the guide pin directly to one of the door and body. A holding section is expedient here on the one hand, arranged in particular above one side of the door holding bar, while the other holding section is arranged on the other hand, in particular below, the door holding bar, so that the door holding bar runs between the two holding sections.

In the case of the door check according to the invention, at least the guide pin connects the holding sections to one another, so that overall a component is created which can be connected to the other of the door and body. It is not necessary for this component to be immobile in itself. A first way of connecting the guide pin to the holding section is that the end of the guide pin is equipped with threaded sections that are optionally screwed into an internal thread of the holding sections or protrude from the holding section and are fixed with a nut. A further possibility is that at least one end of the guide pin has a rivet head which is connected to the holding section by riveting. The other end can also be connected to the second holding section by riveting or alternatively has a screw head.

The door check according to the invention is further characterized in that the holding sections are part of a holder housing, which then also has, for example, connecting means with the other of the door and body of the automobile. Large parts of the holder housing can be made of a less stable plastic, while the guide pin is made of steel, for example, since the guide pin essentially absorbs the static and dynamic loads of the door check.

In the door check according to the invention, the holding sections designed as two housing parts jointly define an opening for the door holding rod to pass through, so that overall a holder housing component that is easy to manipulate is created. The provision of a holder housing makes it possible in particular to use the end of the door holding rod as a stop in the manner of a Train hammer head to avoid that peak loads are introduced into the guide pin when the door is fully open. At the same time, a shock absorber in the area of the holder housing can largely suppress the noise that occurs when the object is struck.

The central perforation of the first brake body through which the guide pin passes, or the elongated opening of the door retaining bar, is preferably formed centrally in the corresponding part, so that weak points are avoided. Furthermore, the door support bar can have a metallic core, which gives it stability, and which is covered by a plastic material. The plastic material has favorable noise and friction properties and can be manufactured with defined surfaces without significant additional costs,

The configuration according to the invention is particularly favorable in which the guide pin passes through the central perforation of the first brake body and the elongated opening in the door retaining bar, in which case the guide pin then guides both parts, the first brake body and the door retaining bar, the first brake body with its perforation in one axial direction of the guide pin is guided along the same, while the door retaining bar with the elongated opening can be displaced along the guide pin, but is centered by the guide pin on a predetermined path and thus causes a defined pivoting of the door retaining bar about the guide pin at each point. In this case, the guide pin is advantageously connected to the other of the door and body, in particular to the door, in particular can be immovably connected, so that the movement of the door is transmitted to the guide pin.

It is expediently provided that the door holding rod can be displaced with respect to the first brake body of the guide pin. This creates a relative movement between the first brake body and the guide pin, which counteracts a pivoting moment of the door about its articulation on the body of the automobile with a braking force. Here it is It is possible that the prestressed first brake body yields to the elevations of the profiling of the door retaining bar while increasing the prestressing and defines an increased holding force in the case of depressions in the profiling of the door retaining bar under relaxation of the prestressing.

The first brake body is expediently pretensioned by a spring element in the direction of the first side of the door holding rod, so that the spring constant of the spring element can be taken into account for setting a holding force. The spring member is expediently clamped at one end against the first brake body directly or indirectly and at the other end against an abutment which is immovable or at least predominantly immovable with respect to the guide pin guiding the first brake body.

Provision can be made particularly favorably for the spring element to be penetrated by the guide pin, so that the spring element is clamped between the first brake body and the abutment. The spring member is expediently designed as a helical spring, but can also be designed as a cup spring or set of cup springs or in some other known manner.

According to a favorable development, it is provided that the first brake body has a cylindrical central perforation, and that the first brake body with its perforation can be rotated about a cylindrical guide section of the guide pin, so that in addition to the guide for a movement in the axial direction of the axis of the guide pin, there is also a Rotation or pivoting about the axis of the guide pin is allowed. This advantageously means that the first brake body can follow a changing orientation of the profiling of the first side of the door retaining rod as a result of the pivoting of the door retaining rod relative to the guide pin, particularly if it does not have a complete or approximately rotationally metric frontal configuration. In this way, it is advantageously achieved that an approximately linear or strip-shaped contact is always achieved between the end face of the first brake body and the first side of the door retaining rod, so that a substantially constant progression of the braking force can be achieved. Alternatively, the central perforation of the first brake body can also be prismatic, for example in the form of a square or a hexagon, in which case the corresponding guide section of the Guide pin is formed complementary to prevent such rotation. For this purpose, however, the guide pin may have to be machined circumferentially. When selecting a favorable combination of materials, eg guide pin made of steel and perforation and/or perforation made of plastic, the provision of a coating or bushing or sleeve, e.g. B. made of metal or plastic, are dispensed with. Preferably, however, at least in the area where the guide pin comes into contact with the door retaining rod, a coating that promotes sliding is applied, eg made of polyetherketone (PEEK), which does not or only minimally increase the thickness of the guide pin in the corresponding area. According to another advantageous alternative, the guide pin can have a bushing or sleeve pushed onto the guide pin in the area of contact with the door retaining bar, which can rotate about the guide pin and which promotes the mutual rolling of guide pin and door retaining bar. The bushing is then prevented, for example by the brake bodies, from moving out of the contact zone with the door retaining rod.

The first brake body is expediently designed as a perforated disk which preferably has a protruding slide elevation on the side facing the door holding rod. The slider bump is oriented substantially perpendicular to the direction of displacement of the door support bar and defines a strip-like contact of the first brake body with the first side of the door support bar. Alternatively, it is possible to equip the rear side of the first brake body, which faces away from the door retaining bar, with a tubular extension, which is preferably formed in one piece with the disc, in order to limit the travel of the first brake body in the axial direction of the guide pin on the one hand and to provide guidance on the other for a spring member, and in particular to prevent the spring member from buckling. Furthermore, this facilitates the assembly of the door check and improves the axial guidance along the guide pin. Alternatively, the vertical stroke of the first brake body can also be achieved by a stop provided in a housing provided stop or the like be limited.

Preferably, the door retaining bar can be rotated about a cylindrical guide section of the guide pin, with the cylindrical guide section of the guide pin and the elongated opening of the door retaining bar being matched to one another in terms of their external dimensions and their internal dimensions in a favorable embodiment such that only minimal play in the relative positioning is possible . It is even possible to insert the cylindrical guide section of the guide pin, which passes through the opening, with a slight press fit. The contact area can expediently be designed to be lubrication-free by selecting an appropriate combination of materials, or greased to reduce the corresponding noise.

According to an expedient development, it is provided that, in addition to the braking torque generated by the brake bodies, the elongated opening in the door retaining rod is designed to generate an additional braking torque, for example in that the opening is narrower in a comfort area near the full opening of the door and the cylindrical guide section of the guide pin jams and thus generates a braking torque. Conversely, the elongated opening can also have a freewheel in the form of a widening, for example in order not to brake the door slamming shut. In particular, at least one preferred holding position of the door can be provided between two projections constricting the opening.

The elongate opening in the door retaining bar is expediently in the form of a slot and breaks through the first side, so that the effective area of the first side is reduced by the width of the opening. The opening is expediently perpendicular to the direction of displacement of the door retaining bar, so that the guide pin also ensures that the first brake body and the first side of the door retaining bar are in contact with one another without tilting and thus over the maximum area.

The door retaining bar preferably has a rectilinear extension, which enables it to be used in opposite doors with different opening directions, so that the series length and thus the cost of manufacturing the component are further reduced. The slot-like opening is then expediently formed exactly in the middle of the door retaining bar. As an alternative to an embodiment with exactly one, preferably central, guide pin, two guide pins can also be provided, which pass through the perforation or the opening.

In a particularly favorable embodiment, it is provided that the door check also has a second side opposite the first side with a further profiling formed on the second side, and that a second brake body also rests in sections on the second side of the door retaining rod, in particular under pretension , In which case the first brake body and the second brake body are penetrated by the guide pin. For this purpose, it is not necessary for the second brake body to also be axially displaceable, but the second brake body is preferably arranged exactly as a mirror image of the first brake body and is designed to be axially displaceable. However, it is also possible for the second brake body to interact with a non-profiled flat second side of the door retaining rod in order to generate a basic braking torque.

The profiling of the first side of the door retaining rod can take place in different stages, with the increase in height of the profiling increasing the braking force to be overcome by increasing the preload of the first brake body. It is expediently provided that relative minima of the pretension define preferred holding positions of the door at a specific opening angle.

The guide pin is preferably cylindrical, at least in the area where the central hole passes through and/or the opening Pin section formed with a smooth outer surface. As a result, the brake body can follow the movement of the door retaining rod, in that the brake body, in addition to the vertical displacement in order to follow the profiling when the door retaining rod is moved relative, also allows free rotation about the journal section with a smooth outer surface, without causing braking or noise and/or a canting.

The profiling expediently has a continuous course, which enables the first brake body to slide along in both directions over the length of the door retaining rod, and is particularly free of discontinuities such as steps over the course of the profiling, which the brake body cannot easily overcome. As a result, the force resulting from the sliding of the brake body on the side of the door retaining rod is essentially defined by the preload, so that the brake body does not have to be adjusted by a motor.

According to a favorable embodiment, the first brake body can be displaced axially freely along the guide pin and/or the first brake body can be rotated freely radially around the guide pin, so that the first brake body can follow the profiling of the door retaining rod and the rotation of the door retaining rod about its joint at the same time. In particular, if both degrees of freedom, ie with regard to the free axial displaceability and the free radial twistability, are given, the door check is very resistant to the most diverse movement patterns and cycles and does not jam or tilt.

The central hole and the opening are preferably penetrated by the guide pin with play, as a result of which the displacement of the door retaining rod and/or the brake body with respect to the guide pin is made possible without or with little friction. As a result, stresses that occur particularly under alternating loads can be processed well without the door check becoming blocked.

In a particularly advantageous development, at least one projection is provided on the brake body, which at least partially penetrates into the opening. As a result, on the one hand, the brake body is advantageously oriented in the direction of the opening, so that the brake body can follow the pivoting of the door retaining rod in a favorable manner. In addition, the projection can prevent the guide pin and the inner walls of the opening from touching, thereby reducing wear and noise.

In a first advantageous embodiment, the projection is disk-shaped and thereby centers the brake body in relation to the door retaining rod. In a first preferred development, the disk-shaped projection can have parallel walls which have a small amount of play in relation to the inner walls of the opening.

Alternatively, the projection has a wedge shape in the radial direction, which facilitates the advancement in the direction of the extension of the door retaining rod. The wedge shape makes it easier for the brake body in particular to follow the pivoting of the door retaining rod. Alternatively or cumulatively, the projection has a wedge shape in the axial direction, which facilitates vertical penetration into the opening.

In a preferred implementation, it is provided that the projection projects beyond the brake body at the end face. As a result, the projection always dips into the opening, while the brake body rests on the first side of the door retaining bar, which side forms a stop for the brake body.

In a favorable embodiment it is provided that the projection surrounds the guide pin and thus spaces the guide pin from the inner walls of the opening. If the projection formed in this way is itself designed as a hollow cylinder, the projection can rotate completely around the guide pin. It is possible then another projection to be provided on the brake body, which is arranged eccentrically and penetrates into the opening in order to give the brake body an orientation in the direction of displacement.

Preferably, the projection or a part of the projection extends radially to the guide pin. In this way, the brake body and its slide elevation can each be aligned with the opening in the door retaining rod.

The projection preferably has a greater thickness than the diameter of the guide pin. As a result, the guide pin can be kept at a distance from the inner walls of the opening, and wear and noise are avoided.

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

Fig. 1

zeigt eine perspektivische Darstellung eines ersten Ausführungsbeispiels eines Türfeststellers in zusammengesetztem Zustand.

Fig. 2

zeigt eine explodierte Darstellung des Türfeststellers aus Fig. 1.

Fig. 3

zeigt einen Schnitt durch den Türfeststeller aus Fig. 1 und 2.

Fig. 4

zeigt eine abgewandelte Variante des Türfeststellers aus Fig. 1 bis 3.

Fig. 5

zeigt eine weitere Variante des Türfeststellers aus Fig. 1 bis 3.

Fig. 6

zeigt ein Beispiel eines nicht alle Merkmale der Erfindung umfassenden Türfeststellers.

Fig. 7

zeigt den Türfeststeller aus Fig. 6 in Explosionsdarstellung.

Fig. 8

zeigt ein weiteres Beispiel eines nicht erfindungsgemäßen Türfeststellers.

Fig. 9

zeigt einen Längsschnitt durch das Haltergehäuse des Türfeststellers aus Fig. 8.

Fig. 10

zeigt einen abgewandelten nicht zur tatsächlichen Erfindunggehörenden Türfeststeller in einer Ansicht vergleichbar Fig. 7.

Der in Fig. 1 bis 3 gezeigte, insgesamt mit 1 bezeichnete Türfeststeller dient dazu, eine als strichpunktierte Linie dargestellte Tür 2 eines Automobils mit einer als strichpunktierten Linie angedeuteten Karosserie 3 zu koppeln. Die Tür 2 ist über nicht dargestellte Scharniere mit der Karosserie 3 verbunden, wobei der Türfeststeller 1 dazu dient, die Schwenkbewegung der Tür 2 um die Scharniere zu bremsen und hinsichtlich des Öffnungswinkels zu begrenzen. Der Türfeststeller umfasst ein Gehäuse 20 mit einer zentralen Öffnung 21, das aus zwei zusammengesteckten Halteabschnitten 22, 23 aus Kunststoff besteht, wobei die Kunststoffteile an besonders beanspruchten Bereichen mit einer Metallarmierung verstärkt sein können. Die Öffnung 21 wird von dem oberen Gehäuseteil 22 und dem unteren Gehäuseteil 23 umschlossen, wenn diese zusammengesetzt sind, wobei jedes der beiden Gehäuseteile 22, 23 einen eingespritzten Nietbolzen 24 aufweist, der für den Anschluss an die Tür 2 in deren Innenbereich vorgesehen sind.The invention will now be explained in more detail with reference to the accompanying drawings based on preferred exemplary embodiments.

1

shows a perspective view of a first embodiment of a door check in the assembled state.

2

shows an exploded view of the door check 1 .

3

shows a section through the door check 1 and 2 .

4

shows a modified variant of the door check Figures 1 to 3 .

figure 5

shows another variant of the door check Figures 1 to 3 .

6

shows an example of a door check that does not include all the features of the invention.

7

shows the door arrester 6 in exploded view.

8

shows another example of a door check not according to the invention.

9

shows a longitudinal section through the holder housing of the door check 8 .

10

shows a modified door check, which does not belong to the actual invention, in a comparable view 7 .

the inside Figures 1 to 3 The door arrester shown, generally designated 1, serves to couple a door 2 of an automobile, shown as a dot-dash line, to a body 3, shown as a dot-dash line. The door 2 is connected to the body 3 via hinges (not shown), with the door check 1 serving to brake the pivoting movement of the door 2 about the hinges and to limit the opening angle. The door check comprises a housing 20 with a central opening 21, which consists of two plastic holding sections 22, 23 plugged together, with the plastic parts being able to be reinforced with metal reinforcement in particularly stressed areas. The opening 21 is enclosed by the upper housing part 22 and the lower housing part 23 when assembled, each of the two housing parts 22, 23 having an injected rivet bolt 24 intended for connection to the door 2 in the interior thereof.

A door retaining rod 30 extends through the opening 21 and is pivotally coupled at a first end in the region of an axis A via a joint 31 to a mounting part 32 which has a recess 32a, by means of which the mounting part 32 is attached to the body or a pillar of the body 3 can be connected by means of a fastener such as a screw or rivet. The joint 31 has an axis A which is parallel to the axis of the hinges, so that when the door 2 is opened to compensate for the pivoting movement about the hinges, a pivoting movement about the axis A is initiated.

The door retaining bar 30 has in its central area on a fully enclosed elongated, slot-like opening 33, which is near the Joint 31 opposite end 34 of the door retaining bar 30 is enough. The door retaining rod 30 has a core 30a made of steel, which is surrounded by a sheath 30b made of plastic, as in particular in 3 to recognize. The door support bar 30 has an upper, first side 35 which is formed with a profile 35a, as will be explained below.

In the region of the opening 21, the two housing parts 22, 23 have end regions which engage together and comprise projections 22a of the first housing part 22, which can penetrate into depressions 23a of the second housing part 23, as shown in FIG 2 to recognize.

The first housing part 22 and the second housing part 23 are connected to one another by a guide pin 40, which also passes through the opening 33, in that the ends 41 of the guide pin 40 are each attached to an outward-facing end face 22b, 23b of the first and second housing part 22, 23 be riveted. As a result, the guide pin 40 connects the two housing parts 22, 23 to form a common housing 20.

It can be seen that the second housing part 23 is made essentially from solid material and has a central bore 23c, through which the guide pin 40 passes and is accommodated largely without play.

The first housing part 22 has a short channel 22c in the region of its end face 22b facing away from the door holding rod 30 , which passes through the upper housing part 22 and which is adapted to the circumference of the guide pin 40 . The channel 22c opens into a first cylindrical cavity 22d, which in turn merges into a second cylindrical cavity 22e with an even larger diameter, forming a step 22f. The second cylindrical cavity 22e is open toward the door support rod 30. As shown in FIG.

A first brake body 50 and a first brake body 50 loading, designed as a coil spring spring member 60 are inserted into the cylindrical cavities 22d, 22e, wherein the coil spring 60 one end in an annular recess on the rear side of the first brake body 50 and is supported at the other end on the end face 22b opposite portion of the first cylindrical cavity 22d, which surrounds the channel 22c radially, is supported. The spring member 60 is coiled so that it can be compressed to increase its preload. The spring member 60 also surrounds the guide pin 40 at a distance.

The first brake body 50 has an end face 51 facing the door retaining bar 30, which has a slider elevation 51a that projects in the direction of the door retaining bar 30 and runs transversely to the displacement direction of the door retaining bar 30, the flanks of which constantly falling on both sides prevent the ramps of the profile 35a from sliding up and down favor. The first brake body 50 has a central hole 50c, which is designed to accommodate a cylindrical guide section 40a of the guide pin 40 with very little play. The guide section 40a of the guide pin 40 passes through the perforation 50c and enables movement of the brake body 50 in the direction of the axis of the guide pin 40 and pivoting about the axis of the guide pin 40.

The first brake body 50 comprises a section designed as a perforated disk 52 which forms a peripheral edge 52a and a central tubular section 53 which extends axially over the edge of the disk section 52 . The central hole 50c is formed in the tube portion 53 and also penetrates the slide bump 51a.

One recognizes in particular in 3 that the step 22f forms a stop for the peripheral edge 52a of the first brake body 50, which limits the axial displacement. Alternatively, the end of the pipe section 53 facing away from the holding rod 30 could also be used for this purpose.

The second housing part 23 can have a the width of the door holding rod 30 spanning, the hole 23 c containing plate which is intended to be remote from the first side 35 second side 36 of the To get door support bar 30 in contact. Here, the guide pin 40 is passed through the plate 23d. It is possible to design the plate as a common part with the second housing part 23.

In 4 A portion of a modified door support bar 30' is shown extending from the support bar 30' Figures 1 to 3 differs in that in the end region 34 of the holding rod 30' a stop buffer 39' is inserted in the opening 33, which in the present case is made of a soft plastic. The stop buffer 39' can either be injected into the door holding rod 30' or glued to it. The bump stop 39' primarily serves to dampen any noise that may be generated when the end region 34 of the door retaining bar 30' hits the guide pin 40 and at the same time to reduce the introduction of mechanical stresses into the plastic sheathing 30b of the door retaining bar 30' through direct mechanical contact.

figure 5 shows an alternative embodiment of a door support bar 30", which extends from the door support bar 30 Figures 1 to 3 by the end area 34" designed as a hammer head. The laterally protruding areas of the hammer head 34" protrude laterally beyond the opening 21 of the holder housing 20 and thus limit the distance that the retaining rod 30" can be pulled out of the holder housing 20. This also Noise and mechanical stresses in the area of the end of the opening 33 are avoided.

6 and 7 show an example of a door check 101 that does not include all the features of the invention, with the same reference numbers as in the exemplary embodiment according to FIG Figures 1 to 3 , designate the same or structurally comparable parts.

Unchanged according to the embodiment Figures 1 to 3 are the door holding rod 30, the first brake body 50 and the spring member 60. However, the door check 101 is not equipped with a holder housing, but with two individual holding sections 122, 123 which are of identical design and which are coupled to one another by a guide pin 140.

The two holding sections 122, 123 are each designed as angle profiles, with a substantially vertically running leg which is formed with a recess 122k, 123k and is used for attachment to a door 2, for example by means of corresponding rivet pins or screw bolts, and with a substantially plate-shaped horizontal leg having a bore 122b, 123b through which the guide pin 140 can pass. It can be seen that the guide pin 140 is designed to be a good deal shorter than the guide pin 40 Figures 1 to 3 , because it only has to connect the distance between the two horizontal legs of the holding sections 122, 123. The guide pin 140 is riveted on the outside of each of the horizontal legs of the holder sections 122, 123 and penetrates the spring element 60, the central hole 50c in the first brake body 50, the elongated opening 33 in the door retaining rod 30 and a hole 70b in a further brake body 70, which rests on the horizontal leg of the second holding section 123 . The further brake body 70 interacts with the second side 36 of the door holding rod 30 facing away from the first side 35 to generate a braking torque against the displacement of the door 2. It can be seen that it is also possible to rotate the second holding section 123 by 180 degrees on the door 2, and then from the guide pin 140, which is longer, interspersed further spring 60 and first brake body 50 to connect, especially when the second side 36 of the door retaining rod 30 is equipped with a profile.

It can also be seen that the guide pin 140 connects the parts together as a whole, with the parts being able to pivot about the guide pin 140 in each case. It is possible that the riveting of the ends 141 of the guide pin 140 couples the holding sections 122, 123 to the guide pin 140 in a non-rotatable manner.

8 and 9 show another example of a door check 201 not according to the invention, with the same reference numbers as in the exemplary embodiments according to FIG Figures 1 to 5 , designate the same or structurally comparable parts.

In contrast to the embodiment according to Figures 1 to 5 the guide pin 40 has a coating or sheathing made of PEEK450FE20 in the area of the guide section 40a, which contacts the opening 33 of the door holding rod 30, which promotes the sliding properties. It is possible to alternatively harden the area of the guide section 40a by partial machining with a laser, so that the wear of this area, which is particularly stressed by relative movement, is reduced. Laser treatment and sheathing can also be combined.

In contrast to the embodiment according to Figures 1 to 3 the door retaining rod 30 has an opening 33 which does not have an approximately constant width but rather comprises areas of different widths. A free-running area 33F of the opening 33 has an increased width compared to the circumference of the guide pin 40, so that a relative movement between the door holding rod 30 and the guide pin 40 is possible with practically no braking or with minimal braking. As a result, no increased effort is required when the door is closed. This function is also referred to as a closing aid, since the resistance of a lock has to be overcome in this area. A clamping area 33K of the opening 33 has a smaller width than the circumference of the guide pin 40, so that a relative movement between the door holding rod 30 and the guide pin 40 is slowed down and a greater force has to be introduced into the door to overcome it. This can advantageously be achieved in that the door is braked shortly before reaching its maximum opening angle, and correspondingly less stress occurs when the stop 34'' is reached.

In contrast to the embodiment according to Figures 1 to 3 the door retaining rod 30 has a holder housing 20 which accommodates two spring members 60 and two brake bodies 50, so that both the first side 35 and the second side 36 of the door retaining rod 30 are each acted upon by one of the brake bodies 50. The brake bodies 50 are in turn guided in an axially displaceable and rotatable manner via a central perforation 50c on the guide pin 40 .

The holder housing 20 comprises two plate-shaped holding sections 22, 23, on each of which one end 41 of the guide pin 40 is riveted. The holding sections 22, 23 are designed as sheet metal discs, the force F ( 9 ) introduced into the system by the spring members 60. It is possible to form the holding sections 22, 23 as plastic discs.

The holder housing 20 further includes a cover 25 made of plastic, which is inserted between the two holding portions 22, 23 and spaced them from each other. Since the cover 25 absorbs only small forces and also does not guide the braking body 50 radially, it is made of a very thin-walled material and can be produced, for example, using an extrusion process. Due to the spacing of the cover 25 from the braking body 50 , the latter can rotate about the guide pin 40 when this follows the profiling of the door holding rod 30 . Also formed in the cover 25 is the opening 21 through which the door support rod 30 can be reciprocated through the holder housing 20 .

The cover 25 includes a central receptacle for the spring members 60 and the brake body 50 and a guide 28 in which two link parts 80 are arranged, each having a sleeve 81 with an internal thread. The holder housing 20 can be connected to a vehicle door via the sleeve 81 .

The two holding sections 22, 23 can also be designed so that they additionally close the insertion openings of the guide 28 completely or partially. It can be seen that the cover 25 connects the two holding sections 22, 23 and the parts coupled thereto indirectly to an automobile part such as a vehicle door. It can also be seen that instead of a one-piece cover 25, this can also consist of two parts, with a spring member 60 and brake body 50 being accommodated in such a part. Finally, it can be seen that although the cover 25 spaces the holding sections 22, 23 apart, the cover 25 is not required for this purpose. The cover 25 thus primarily protects the inner workings of the holder housing against the ingress of dirt from the outside.

The door check works as follows: the holding sections 122 , 123 or the housing parts 22 , 23 which also form holding sections are connected to an interior area of the door 2 , while the assembly part 32 is connected to the body 3 . If the door 2 is now pivoted about the hinge axes relative to the body 3, the door holding rod 30 pivots about the axis 31 and is pulled out of the door 2, resulting in a displacement relative to the first brake body 50. At the same time, the guide pin 40, 140 passing through the opening 33 fixes the door holding rod 30 in the region of its guide section 40a, 140a. The first brake body 50 can also pivot about the guide pin 40, 140 in order to align its slide elevation 51a with the profile 35a of the door retaining rod 30, with the spring 60 loading the first brake body 40 with a pretension so that it is against the first side 35 of the door retaining rod 30 is pressed. The preload of the spring member 60 is increased when the profile 35 has an increasing thickness while the door retaining rod 30 is pulled out of the door 2. If the profile 35a decreases, the spring member 60 is relieved again. As a result, the braking torque of the door retaining rod 1, 101 changes while the door retaining rod 30 is being pulled out of the door 2 as a result of the pivoting movement of the door 2. During the displacement movement of the door retaining rod 30, it is always centered by the guide pin 40, 140, so that there is no friction on interior areas of the door 2 and/or on Limits of the opening 21 comes.

It can be seen that the door-retaining bar 30 has an elongated course overall and thus differs from the known curved door-retaining bars, which can rub against the opening 21 . The elongated contour is made possible by the central guidance of the guide pin 40, 140 and leads to less material waste during production. Furthermore, the door stay rod 30 can be used equally with a left-opening door and a right-opening door of an automobile whose braking force characteristics do not differ, because now the curvature no longer predetermines the installation location left or right. Furthermore, it can be seen that the door arrester 1, 101 can be installed overall on both sides of the vehicle by rotating it by 180 degrees, for example. That is, the first side 35 points up for one side and down for the other side.

10 shows the door holder 101 7 in a modified variant not according to the invention, with the same reference numbers as in 6 and 7 denote the same parts. In contrast to the door holder 101 off 6 the brake body 50, which is connected to the guide pin 140 in a freely axially displaceable and freely rotatable manner, has a radially extending nose 250, which projects radially perpendicularly to the extension of the slide elevation 51a and, like a sword, projects into the opening 33 of the door retaining rod 30 and thus the brake body 50 aligns with respect to the profile 35a. The lug 250 also protrudes axially a little above the slider elevation 51a, so that in each axial displacement position of the brake body 50 the lug 250 penetrates a little into the opening 33, even if the first side 35 is essentially flat. The lug 250 supports the brake body 50 in following the twisting of the door retaining rod 30 about its linkage 31 by transmitting a stronger moment to the lug 250 and thus to the brake body 50 . The lug 250 is designed with two parallel surfaces that can be inserted into the opening 33 with little play, so that there is no undesired additional braking. It is but possible to form the two surfaces also wedge-shaped in the radial direction, and/or wedge-shaped in the axial direction in order to support centering during the movement.

It is also possible, instead of a lug, to provide another projection on the brake body 50 which penetrates into the opening 33, for example a cylindrical pin spaced radially from the axis of the brake body 50, which provides the same function. An angled pin or a pin protruding obliquely from the brake body 50 is also possible.

Alternatively, the pin 250 ′ can also be provided as an extension of the tubular section 53 of the brake body 50 ′ or as an extension of the tubular section 53 and thereby completely or partially surround the guide pin 40 within the opening 33 .

If the door check has two axially displaceable brake bodies 50, both are expediently equipped with a projection 250. The two projections can also be attached in opposite directions, so that one projects radially in the opening direction and the other radially in the closing direction. If the two projections are arranged in the same direction, in particular aligned with one another, they are dimensioned in such a way that they do not touch or only touch in the area where the door is pulled shut.

The further brake body 70 also has two projections 270 which penetrate in the manner of a nose or a sword into the opening 33 of the door retaining rod 30 with the advantages mentioned above.

It is possible to provide only the brake body 70, which is not axially displaceable, with the projections 270 and omit the projection 250 on the first brake body 50.

It is also possible to arrange two radial projections 250 on the brake body 50, so that the brake body 50 can move in both directions is centered along the profiling 35a.

The projections 250, 270 are expediently formed in one piece with the respective brake bodies 50, 70, in particular made from plastic material using an injection molding process. However, it is also possible to inject a metallic projection or to screw it in after the production of the brake body 50, 70 or to fix it in some other way.

The projections provided on the brake bodies and their centering in the opening 33 also prevent friction of the guide pin 40 on the inner walls of the opening 33, resulting in less wear and/or corrosion and less noise. To this end, the thickness of the projections 250, 270 is expediently greater than the diameter of the guide pin 40, at least in the area in which it passes through the opening 33.

It is possible to select the wedge shape or tapering of the projections 250, 270 in such a way that an increased friction torque is provided in certain areas, for example by the opening 33 providing constrictions in certain areas in which the projections 250, 270 cause increased friction during displacement learn along the profiling 35.

The invention has been explained above by means of exemplary embodiments and not forming part of the actual invention, in which the first side 35 of the door support bar 30 faces upwards. It is understood that the first side of the door support bar can also be inserted into the vehicle in such a way that it points downwards and the first brake body 50 presses against the first side 35 from below.

The invention has been explained above using exemplary embodiments in which only a first side 35 of the door holding rod 30 is acted upon by a first brake body 50 . It goes without saying that door retaining rods can also have two sides, each of which is acted upon by a brake body 50 in order to generate a braking torque.

The invention has been explained above using an exemplary embodiment in which the guide pin 40, 140 is connected to the holding sections 22, 23, 122, 123 by riveting and thus connects them to one another. It goes without saying that there are also other options for connecting the guide pin, in particular if the end of the guide pin is equipped with threaded sections, and that the spring force of the spring member 60 can also be finely adjusted as a result. In order to prevent the guide pin from being displaced afterwards, the guide pin can be fixed to the holding sections with a spot weld or the like.

The invention has been explained above using an exemplary embodiment in which the elongated opening 33 of the door retaining rod 30 has a constant width. It goes without saying that constrictions or widenings can also be provided in the opening, which generate an additional braking torque when the door holding rod 30 is moved relative to the guide pin 40, 140.

A special feature of the door check 1, 101 according to the invention is that the door retaining rod 30 and the first brake body 40 are both captively connected to the same guide pin 40, 140, which prevents an incorrect pairing of the door retaining rod 30 and holder housing 20 or retaining sections 122, 123.

Claims (15)

1. Door arrester, in particular for a door of a motor vehicle, comprising

   a door retainer rod (30) which can be mounted on one of a door (2) and a body (3) so as to be pivotable and having a first side (35) with a profiling (35a) formed on the first side (35), and

   a first braking element (50) which can be arranged on the other of the door (2) and the body (3) and in sections bearing against the first side (35) of the door retainer rod (30) under the effect of a preload, and which, with the profiling (35a) of the first side (35), defines at least one retaining position,

   wherein the first braking element (50) has a central boring (50c),

   wherein the door retainer rod (30) has an elongate through-hole (33),

   wherein a guide pin (40) passes through the central boring (50c) and the through-hole (33),

   wherein the guide pin (40) permits an axial movement of the first braking element (50) along the guide pin (40),

   wherein the guide pin (40) is fixed on two retaining portions (22, 23; 122, 123) which can be connected to the other of the door (2) and the body (3), and

   wherein the guide pin (40) connects the retaining portions (22, 23; 122, 123) to one another,

   characterized in

   that the retaining portions (22, 23) are part of a retainer housing (20), and

   that the retaining portions (22, 23) together delimit an opening (21) for

   the passage of the door retainer rod (30).
2. Door arrester according to claim 1,
   characterized in that the door retainer rod (30) can be pivoted about the guide pin (40).
3. Door arrester according to either claim 1 or 2, characterized in that the door retainer rod (30) can be displaced with respect to the first braking element (50) and the guide pin (40).
4. Door arrester according to any of the preceding claims, characterized in that the first braking element (50) is preloaded by a spring member (60) towards the first side (35) of the door retainer rod (30).
5. Door arrester according to claim 4, characterized in that the guide pin (40) passes through the spring member (60).
6. Door arrester according to any of the preceding claims, characterized in that the guide pin (40) is fixed at least at one end by riveting to one of the retaining portions (22, 23; 122, 123).
7. Door arrester according to any of the preceding claims, characterized in that the first braking element (50) can be rotated about a cylindrical guide portion (40a) of the guide pin (40).
8. Door arrester according to any of the preceding claims, characterized in that the first braking element (50) is formed as a perforated disk (52) which has a protruding slide elevation (51a) on the side (51) facing the door retainer rod (30).
9. Door arrester according to any of the preceding claims, characterized in that the elongate through-hole (33) is slot-like and penetrates the first side (35).
10. Door arrester according to any of the preceding claims, characterized in that the profiling (35a) has a continuous course which allows the first braking element (50) to slide along in both directions over the length of the door retainer rod (30).
11. Door arrester according to any of the preceding claims, characterized in that the first braking element (50) is axially freely displaceable along the guide pin (40), and that the first braking element (50) can be freely rotated radially about the guide pin (40), so that the first braking element (50) can simultaneously follow the profiling (35a) of the door retainer rod (30) and the rotation of the door retainer rod (30) about its joint (31).
12. Door arrester according to any of the preceding claims, characterized in that at least one projection (250; 250'; 270) is provided on the braking element (50; 50'; 70) which at least partially penetrates the through-hole (33).
13. Door arrester according to any of claims 1 to 2, characterized in that the projection (250; 250'; 270) protrudes over the braking element (50; 50'; 70) on the front side.
14. Door arrester according to any of claims 12 to 13, characterized in that the projection (250; 270) extends radially towards the guide pin (40).
15. Door arrester according to any of the preceding claims, characterized in that the braking element (50) comprises, on a back which faces away from the door retainer rod (30), a central tube portion (53) in which the central boring (50c) is configured and which forms a guide aid for a spring member (60) supporting against the back.

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