This application is the National Phase of PCT Application No. WO 02/23000 filed PCT on Aug. 30, 2001, which claims priority to German Utility Model Application No. 200 15 850.3 filed Sep. 13, 2000 and U.S. application Ser. No. 09/716,056 filed Nov. 17, 2000.
The present invention relates to a hinged door arrester, in particular for vehicle doors, comprising two hinge parts which are connected in a manner such that they can pivot about an axis of rotation by means of a hinge pin and between which is integrated a latching device defining various relative positions of rotation, the latching device first comprising at least one latching element which is connected kinematically to the first hinge part and is spring-loaded in a radial direction of action perpendicular to the axis of rotation, and secondly comprising a runway which is connected kinematically to the second hinge part, is essentially in the form of a sector of a circle and, with regard to its radius of curvature, is arranged coaxially to the axis of rotation and has at least one latching point interacting with the latching element.
A hinged door arrester of this type, i.e. a “door hinge having an integrated door arrester”, is described in the document EP 0 893 565 A2. It is firstly characteristic of this type that the pivoting axis of the latching element of the door arrester corresponds to the axis of rotation of the hinge, and secondly that a runway merely extending over part of a circle (sector of a circle) is provided. This results in a very compact design. In the known hinged door arrester, the latching element (or each of a plurality of latching elements) is designed as a roller, roll or similar rotating rolling body which is mounted, via a bearing-spindle element, in a manner such that it can rotate about a rotational axis parallel to the axis of rotation of the hinge. In this connection, it is also to be ensured, by means of specific measures in the region of the interacting surfaces of the runway and of the latching element resting on the runway, that the rolling body in each case rolls along the runway so as to avoid any sliding friction and wear resulting therefrom. However, the rotational bearing arrangement of the rolling body or of each rolling body results in a relatively high outlay, which is disadvantageous especially because door arresters of this type are mass-produced products and so even only a relatively slight additional cost per piece results overall in serious additional costs.
The invention is based on the object of providing a hinged door arrester of the type mentioned, which is distinguished by a refinement which, in terms of structure and production, is particular simple and of good value and at the same time has good performance and endurance properties.
According to the invention, this is achieved in that the latching element is designed as a sliding element guided over the runway with sliding friction. The invention therefore fundamentally differs from the specification known from the prior art and it is thereby advantageously possible to omit complicated rotational bearings in the region of the latching element. It is nevertheless possible to obtain good performance properties and also long endurance, in a manner which is virtually free of maintenance. This has to be regarded as surprising, since the latching elements of door arresters of this type are acted upon by very high spring forces in order to ensure high latching and door-arresting moments. In this respect, the invention is based on the realization that—especially with certain combinations of material and/or shapings in the region of the sliding surfaces of the runway (slideway) and sliding element—it is possible still to obtain sufficiently low sliding friction that overall good performance properties and, surprisingly, also long endurance can be ensured. For this purpose, it is expedient to form one of the two interacting sliding surfaces from a metal and to form the other sliding surface from a suitable plastic (metal/plastic pairing), where the allocation of the materials to the sliding element and the slideway is actually as desired. Particularly suitable plastics are: PPA, PES, PEI, PPS, PA or PEEK. It is advantageous, for example, to configure the runway in the region of its runway surface of a polyamide with a lubricant additive, in particular molybdenum sulfite (for example, PA6 MOS2), the sliding element, in the region of its sliding surface, consisting of a sintered metal, preferably with a lubricant diffused into it. Alternatively, the runway can consist of aluminum and the sliding element of plastic, for example the abovementioned polyamide. The essential feature here is for at least one of the “sliding partners” always to consist of a suitable plastic for the purpose of isolating sound.
Further advantageous refinement features of the invention are found in the subclaims and in the description which follows.
The invention will be explained more precisely with reference to preferred embodiments of a hinged door arrester according to the invention, which embodiments are illustrated in the drawing, in which:
In the various figures of the drawing, identical parts are always provided with the same reference numbers and are therefore generally also only described once in each case.
As ensues first of all from
The first hinge part 2 comprises a mounting section 18, with which the first hinge part 2 can be fastened to a mounting surface, which in particular is vertical, and also comprises a supporting section 20 (
According to
As now further ensues from each of
The invention now makes provision for the latching element 12 to be designed as a sliding element 54 guided over the runway 16 with sliding friction.
In the first embodiment shown in
By means of a front sliding surface 58, as it moves the sliding element 54 interacts with a slideway surface 60 of the runway 16 with sliding friction. According to the invention, in the regions of the sliding surface 58 and of the slideway surface 60 use is made of materials or pairs of materials enabling low coefficients of friction to be achieved.
A metal/plastic pairing is expediently involved in each case in such a manner that metal and plastic always interact with sliding friction. The following may be mentioned as an exemplary example of plastics which interact, with advantageously low sliding friction, with a metal, which is basically as desired:
Further suitable materials emerge from the following table:
The materials mentioned for the corresponding components can in principle be used in any desired or suitable combination with one another. However, in the following, more specifically, advantageous combinations of material are given as preferred examples.
It is provided as a variant in
In the design variant shown in
As furthermore ensues in particular from
The runway 16 preferably has a plurality of latching points 14 which are each formed as latching depressions 64 with a contour matching the sliding element 54. As illustrated, these are preferably concave latching depressions 64, the sliding element 54 being curved in a correspondingly convex manner in the region of its sliding surface 58.
During the relative movement of the hinged parts 2, 4 the sliding element 54 latches in each case into a latching depression 64. In this connection, the position of the latching depressions 64 is selected in particular in such a manner that a completely opened opening position of the vehicle door and preferably, in addition, at least one, for example, approximately semiopened intermediate position (so called parking position) are defined. In addition, it is preferably provided that the latching device 10 defines a pulling path for automatically shutting the vehicle door in an end region of the relative movement, which region is assigned kinematically upstream of a door-closing position. For this purpose, the runway 16—see again
The insert part 62 forming the runway 16, particularly when it is able to be released and interchanged, can be supported in the housing 40 via a form-fitting connection. The connection is designed in such a manner that it gives a rigid, positionally fixed support, in particular in the direction of movement of the sliding element 54. The connections can expediently be dovetail-like or T-groove connections. Being able to interchange the runway 16 or the insert part 62 makes simple and rapid adaptation to different requirements possible. For example, the hinged door arrester can be configured for different latching positions and/or latching forces/moments. In addition, a possibility for simple and rapid maintenance is provided.
With regard to the sliding element 54, it should furthermore be mentioned that in the cuboidal design, for example according to
The guide part 46 may be an integral shaped part made of metal or plastic. In the variant according to
Finally, as far as the variant according to
In the exemplary embodiment illustrated according to
It should furthermore be mentioned that an end stop restricting the opening movement of the vehicle door is formed between the two hinge parts 2 and 4 by the two parts 2 and 4 directly bearing against each other via stop elements (not described in greater detail).
In the embodiment shown in
Of course, a “kinematically reverse” design is also possible with the first hinge part 2 being assigned to the vehicle door and the second hinge part 4 being assigned to the positionally fixed vehicle part.
In a further advantageous refinement of the invention—see
As furthermore concerns the design according to
The refinement according to the invention gives, inter alia, the following substantial advantages:
compact design, low weight, low in noise or virtually free of noise, able to be removed and fitted simply and rapidly, sealed encapsulation of the latching device for protection against external influences during operation and, in particular, also against a possible dip coating during production. In addition, the fact that of an entire circle intentionally only a segment of a maximum of 90° is used for the runway 16, results in a very small overall size and the installation space available within the vehicle can be better used for the radius or levers of the latching elements. In this manner, a relatively large radius can be used, so that a high retaining moment can be achieved with relatively low spring force F. In the embodiment realized, a radius of movement (main radius R of the runway 16; see
A maximized radius of action R which is still able to be realized in the available construction space in the region of motor-vehicle doors makes it possible, according to the invention, for the mechanical forces or influences to be selected within a limit range which only allows the use of plastic in the latching device (sliding) as the frictional partner. The advantageous result is a sliding door arrester system which is virtually free of noise and maintenance and meets the requirements and functional specifications of the motor vehicle industry. In contrast, smaller radii R would, because of excessive forces, rule out the use of plastic, so that increased noises would be caused because of having to use steel or other metals.
According to the invention, at least one of the two “sliding partners” interacting in each case therefore can always consist of a plastic material for the purpose of “refraction of sound” or “isolating of sound”. It is particularly advantageous, for example, to configure the runway in the region of its runway surface of a polyamide with a lubricant additive, in particular molybdenum sulfite (for example, PA6 MOS2), the sliding element, in the region of its sliding surface, consisting of a sintered metal, preferably with a lubricant diffused into it. The guide part can consist of, for example, extruded aluminum, for example F31, which may preferably be hard anodized as surface protection. The sliding element advantageously has a sliding radius of curvature of only approximately 2 mm. This also correspondingly applies to the radius of the latching depressions. Each latching depression merges via a transitional radius of, in particular, approximately 5 mm into the main radius R of the runway. Between the main radius R and the latching depressions the sliding element executes a radial movement stroke of preferably approximately 3 mm. A door-arresting moment of approximately 50 Nm can be achieved by the values mentioned by way of example.
In an advantageous alternative the following pairings of material can also be used:
The invention is not restricted to the exemplary embodiments illustrated and described, but also includes all designs acting in the same manner within the meaning of the invention. Furthermore, the invention up to now is also not restricted to the combination of features defined in claim 1, but may also be defined by any desired other combination of certain features of all of the individual features disclosed as a whole. This means that in principle virtually any individual feature of claim 1 can be omitted or replaced by at least one individual feature disclosed at another point in the application. To this extent, claim 1 is merely to be understood as a first formulation attempt for an invention.
Number | Date | Country | Kind |
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200 15 850 U | Sep 2000 | DE | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/EP01/10032 | 8/30/2001 | WO | 00 | 3/12/2003 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO02/23000 | 3/21/2002 | WO | A |
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Number | Date | Country | |
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20040020014 A1 | Feb 2004 | US |