DE10125555A1 - Module carrier for a vehicle door - Google Patents

Abstract

The invention relates to a module support for a vehicle door, comprising at least one toothed rack or threaded spindle. The invention also relates to a door function module based on said module support, comprising a window, wherein a tooth or worm gearing engaging with the toothed rack or threaded spindle of the module support is fixed on or to the lower edge of said window..

Description

The present invention relates to a module carrier for a Vehicle door and a door function module containing this module carrier.

Many vehicle components are now ready for assembly finished and usually only need to be assembled and fastened or to be connected. This simplifies the product process in the production of series vehicles considerably and also opens up the possibility of being quicker and easier systematic change. For example, in Fahr so-called door function modules are used on the inside, which a variety of door components such as window lifters, window guides rail, loudspeaker, cable ducts and motor housing for Electric motors included. Such door function modules have the further the task of wet and dry area within one Separate vehicle door permanently and reliably.

There are essentially two sy as pre-assembled window regulators steme established. On the one hand comes a scissor lift, such as. B. in described WO 00/35696 or US-A 5,079,871, for use. This construction requires a large amount of space, ins especially in the central area of a door function module, and very rigid components, in particular lever arms, which are regularly made of Me tall are made and therefore always an additional manufacture require step.

In addition, there is the lifting and lowering mechanism for the windows disc also designed as a cable construction. In EP-A 0 982 165 is e.g. B. a cable window lifter described with a fixable spring tensioning device is configured to a precise adjustment of the window pane during use sure. This device shows that a Cable construction only works properly if the the cables used are permanently under tension.

A cable pull device can also be found in DE-A 197 32 225 wrote. It is expressly pointed out that the complete lifting and lowering mechanism for the window pane with including pulley supports, cable pulls, rope pulleys, rope tensioners and Cable drive towards the module carrier in a separate step assemble. Around the rope tension permanently and reliably to be able to maintain and due to the use of the  The cable mechanism acting forces are its individual compo nenten usually carried out in metal. Consequently, additional manufacturing steps for each individual component and special Current punching and forming tools for every door function module type provided.

As can be seen from DE-A 195 28 467, at konven cable winch mechanical stresses in the lifting and lowering mechanism, e.g. B. due to manufacturing tolerances, not always avoid completely. This can make it too difficult common occurrences in the system. The reason for this is generally increased friction of tilted or partially tilted components len. In addition to increased wear, there is usually also a ver Accept increased noise. While these disadvantages can according to DE-A 195 28 467 through between window guide rail and Compensated spring-elastic elements attached to the module carrier become. However, this makes the component design even more complex plex. In addition, you cannot come without another material for the resilient element. Finally, too for a sufficient adhesion between the elastic El ment and the guide rail or the module carrier, z. B. about spe zial adhesives, rivets or other holding devices, worry to wear.

A disadvantage of cable winch lifters is that Guide or slide rails of the disc carrier at least one Must have a length equal to the full lifting height of the window pane equivalent. Especially for vehicles with low-lying windows Sterlinie are therefore the preassembled according to DE-A 197 09 835 Cable lifters are usually longer than the real height of the off cuts in the inner door panel, which, however, leads to the final assembly can cause considerable difficulties. According to DE-A 197 09 835 this problem can be remedied by going into the upper border of the inner door panel recesses to accommodate the upper end of the guide rail and the associated rope pulleys provides. Such an embodiment inevitably brings Adjustments to the tool for the inner door panel with itself and be affects the rigidity and the constructive scope for the inner door panel.

If you want to take advantage of the door function module, you should Guide rails must be pre-assembled. This assumes that the Opening in the inner door panel and the dimensions of the door function module are coordinated, which is particularly the case with large door functions onsmodules can lead to losses in rigidity and only through additional design measures such as cross bracing must be made of metal (see also DE-A 197 32 225). As a bypass  This problem is proposed in DE-A 198 02 477, min at least one guide rail of the window lifter can be moved on the Attach the backing plate so that after the door is assembled Function module can be brought into the operating position. However, this goes hand in hand with the sliding guide rail only in the intended optimal butt during final assembly sition and taking into account the required safety standards can be fixed. Additional steps in the end assembly, however, regularly increase the susceptibility to errors.

The window lifting and lowering constructions according to the state of the art nik allow them to be incorporated into door function modules can, but are very space-consuming and limit the con structural leeway in the design of vehicle doors. They also require additional manufacturing and assembly steps which counteracts the most economical production possible. moreover the known lifting and lowering mechanisms rely on to be very solid to be reliable even in continuous operation sig and function properly and the occurring To withstand forces. This shows z. B. also because the double-strand systems are preferred for cable window regulators are (see also DE-A 195 28 467). This, however, goes again a ho component weight as well as higher material and manufacturing costs associated.

The present invention was therefore based on the object, a Mo dulträger or a door function module to find that easy and inexpensive to manufacture, the constructive scope not restricted and does not have the aforementioned disadvantages.

Accordingly, a module carrier for a vehicle door has been found that comprises at least one rack or threaded spindle. The white A door function module was found that complies with the Mo Includes support.

The module carrier according to the invention essentially consists of a thermoplastic. Suitable thermoplastics stel len inter alia polyamides, especially amorphous and partially crystalline polyamides, polyesters such as polybutylene terephthalate and Polyethylene terephthalate, polyolefins such as polyethylene and poly propylene, polyarylene ether, e.g. B. polyphenylene ether, polysulfones, Polyether sulfones, polyether ketones, polyoxyalkylenes, e.g. B. Polyoxy methylene, thermoplastic polyurethane, polystyrene, syndio tactical polystyrene, styrene (co) polymers such as ASA and ABS copo polymers, poly (meth) acrylates, e.g. B. polymethyl methacrylate, and their mixtures.  

Among the polyamides can be both amorphous and partial crystalline polyamides as well as copolyamides the. These polymers are commercially available e.g. B. under the brand name Ultramid® (BASF AG). Make preferred polyester Polyethylene terephthalate and especially polybutylene terephthalate, which is also commercially available under the brand name Ultradur® (BASF AG) are available. As particularly suitable Polyolefins are the class of polypropylenes.

Suitable styrene (co) polymers are ABS, ASA, SAN and AES-Po polymers. ABS polymers are among others rem for impact-modified styrene / acrylonitrile polymers, at those graft copolymers of styrene and acrylonitrile on polybu Tadiene rubbers in a copolymer matrix made of styrene and acrylic nitrile present. ASA polymers are generally understood impact modified styrene / acrylonitrile polymers, in which graft copolymers of vinyl aromatic Compounds, especially styrene, and vinyl cyanides, ins special acrylonitrile, on polyalkyl acrylate rubbers in one Copolymer matrix of styrene and acrylonitrile in particular For example, ABS and ASA polymers are suitable the commercial products Terluran® and Luran®S (both BASF AG). Wei suitable as styrene (co) polymers are styrene / acrylonitrile Copolymers, also called SAN for short, like the commercial product Luran® (BASF AG), methyl methacrylate / acrylonitrile / butadiene / styrene Copolymers, e.g. B. the commercial product Terlux® (BASF AG) and Styrene / butadiene polymers, styrene / butadiene block copolymers and vinyl chloride / acrylate graft copolymers. Of course can also mixtures of the aforementioned styrene (co) polymers be used.

Suitable polycarbonates are known per se. For the purposes of the invention, polycarbonates also include copolycarbonates. Polycarbonates preferably have a molecular weight (weight average M _W , determined by means of gel permeation chromatography in tetrahydrofuran against polystyrene standards) in the range from 10,000 to 200,000 g / mol. They are preferably in the range from 15,000 to 100,000 g / mol. This means that the polycarbonates generally have relative solution viscosities in the range from 1.1 to 1.5, measured in 0.5% strength by weight solution in dichloromethane at 25 ° C., preferably from 1.15 to 1.33. to have.

Polycarbonates are e.g. B. according to the method of DE-B-13 00 266 by interfacial polycondensation or according to the method DE-A-14 95 730 by reacting diphenyl carbonate with bis phenols available. Preferred bisphenol is 2,2-di (4-hydroxy phenyl) propane, in general - as in the following - as bis  called phenol A. Commercially available are e.g. B. the poly carbonate Makrolon® (Bayer) and Lexan® (GE Plastics).

Instead of bisphenol A, other aromatic dihydroxy compounds can also be used, in particular 2,2-di ( 4- hydroxyphenyl) pentane, 2,6-dihydroxynaphthalene, 4,4'-dihydroxydiphenylsulfane, 4,4'-dihydroxydiphenyl ether, 4,4 ' -Dihydroxydiphenylsulfit, 4,4'-Dihydroxydiphenylmethan, 1, 1-Di- ( 4- Hydroxyphenyl) ethane, 4, 4-Dihydroxydiphenyl or Dihy droxydiphenylcycloalkane, preferably Dihydroxydiphenylcyclohexane or Dihydroxylcyclopentane, in particular 1,1-bis (4-hydroxyphenyl) 3,3,5-trimethylcyclohexane and mixtures of the aforementioned dihydroxy compounds.

Particularly preferred polycarbonates are those based on bisphenol A or bisphenol A together with up to 80 mol% of the aromatic dihydroxy compounds mentioned above. Copolycarbonates according to US Pat. No. 3,737,409 can also be used. Of particular interest are copolycarbonates based on bisphenol A and bis (3,5-dimethyl-4-hydroxyphenyl) sulfone or 1,1-di- ( 4 -hydroxyphenyl) -3,3,5-trimethyl-cyclohexyl, which are characterized by high heat resistance. The latter copolycarbonate is also commercially available and the trade name Apec®HT (Bayer). It is also possible to use mixtures of different polycarbonates.

Thermoplastic polyurethanes (TPU) are the reaction products of diisocyanates with long-chain diols. Compared to the polyurethane foams formed from polyisocyanates (containing at least three isocyanate groups) and polyhydric alcohols (containing at least three hydroxyl groups), in particular polyether and polyester polyols, thermoplastic polyurethanes have no or only slight crosslinking and accordingly have a linear structure , Thermoplastic polyurethanes are well known to the person skilled in the art and can be found, for. B. in the plastic manual, volume 7 , polyurethane, ed. G. Oertel, 2nd edition, Carl Hanser Verlag, Munich, 1983, described in particular on pages 428 to 473. As a commercially available product here, for. B. Elastolan® (from Elastogran GmbH). Preference is given to polypropylene, including fiber-reinforced polypropylene, polyamide, polybutylene terephthalate (PBT), thermoplastic polyurethanes, polycarbonates (PC) and to ASA and ABS polymers and their mixtures, in particular to mixtures of PBT / ASA and PBT / ABS, also impact modified and / or fiber reinforced, PC / ASA and PC / ABS, especially for the slide and guide rails. Recyclates of the thermoplastic polymers mentioned can of course also be used for the production of the module carriers from thermoplastic materials. The aforementioned thermoplastic polymer materials are generally known, for example from H.

Domininghaus, The plastics and their properties, VDI-Verlag, Düsseldorf, 1992.

The thermoplastic module carrier material can be conventional auxiliary / Contain fillers and / or fibrous materials, preferably in amounts of 1 to 60, particularly preferably 5 to 50 and in particular 10 up to 40 wt .-%, based on the total weight of the module carrier used thermoplastic.

Furthermore, the thermoplastic materials mentioned in a known manner with conventional synthetic or natural rubbers can be impact-modified.

Of course you can use the thermoplastic also common additives such as light, UV and heat stabilizers, carbon blacks, processing aids and flame retardants Add medium in the usual quantities.

In one embodiment of the invention, the ther plastic plastic material, especially the sliding and / or Guide rails for z. B. the window pane, contents of coal fibers, graphite or molybdenum disulfide.

The module carrier according to the invention are preferably above the Processes known to those skilled in the art, such as injection molding, thermoforming, hot pressing, injection stamping, low pressure injection molding or that won blow molding.

The module carriers according to the invention are characterized in that over at least one rack or Ge attached to it have a wind spindle. These components can, for example made of a metal, e.g. B. made of a light metal such as aluminum be, the connection to the module carrier by means of adhesive, Rivets or screws can be made. Furthermore is It is possible to manufacture the rack and threaded spindle directly from the manufacturer the module support made of metal.

For example, these components can be used when using the Form the die casting process directly in one piece.

In a preferred embodiment, the toothed rack is composed of a thermoplastic material, as described above. The plastic material used for the toothed rack can both agree with and differ from that of the module carrier and, for. B. be subsequently formed positively in a separate production step, for example by means of two-component (2K) -Spritzgusstechnologie.

In a particularly preferred embodiment, the tooth rod directly in the manufacture of the module carrier with be taken into account. For example, it is possible to use the injection molding plant Modify stuff for the module carrier so that at the same time one or more racks in the desired shape and size be formed on the surface of the module carrier. Form the individual teeth and those of the respective racks can be used easily adapted to the desired task the.

Depending on the desired application, the rack can be used as a vertical, horizontal, sloping, circular or curved Rack can be designed. Essentially vertically on the Racks running module carriers are particularly suitable as Component for lifting and lowering devices for motor vehicle doors renfenster. Is z. B. for space reasons a window full introduction to the door interior not just scorching k, but also to move laterally, offers a ge curved rack guide or one initially essentially vertical rack and pinion guide, which is in the lower door function module richly changes into a corresponding curvature. Horizontal or circular racks can be used as Component components for adjusting devices of ventilation and Closure flaps are used.

The module carrier according to the invention can also do a lot have a number of integrated holding and guiding elements, z. B. one or more separate or in one piece with the module ger connected guide or slide rails, z. B. for the fen sterscheibe. These guide rails are preferred in the sides arranged near the edge of the module carrier. you can in the vertical or almost vertical direction over the entire Length of the module carrier or only extend over parts of it. In one embodiment there is a slide or guide rail in the immediate vicinity of the rack or spindle. in the special can be slide or guide rail and tooth rod be designed as a functional unit, for. B. can one side of a slide or guide rail as a rack be shaped.  

The specific design of window guide rails, too those made of plastic are known to the person skilled in the art, e.g. B. from DE 197 32 225, to which reference is hereby made.

Furthermore, the module carrier can be further components, in one piece integrated or molded on separately, included as a component from Z. B. locks, speaker cabinets, air ducts or air ducts, cable ducts, airbag systems or reinforcements serving elements such as stiffening ribs. The invention appropriate module carrier can thus already in advance, d. H. in the course of pre-assembly, with all possible mechanical, who are equipped with electromechanical or electronic units the.

The module carrier according to the invention is particularly suitable for Manufacture of door function modules. Door function modules are usually between the outer skin of a motor vehicle door and the inner lining. This door preferably has function module via, a module carrier, a window pane and at least one gear or worm gear or one gear or Worm gear, which is in the lower area of the window, especially in the area of the lower edge of the window pane this is connected and in the rack or threaded spindle of the module carrier engages and thus a relative movement of fen window and module carrier. It can be commercially available Toothed and worm gears are used, which are known Way, e.g. B. by gluing, clamping or screwing in lower area of the window pane can be fixed. The Gear wheels or worm wheels are preferably made of metal but also from a thermoplastic material, which with that the rack is identical or different his. In the same way, instead of gears and tooth a screw nut running along a threaded spindle ter can be used.

The toothed or worm gear can be driven by an electric motor are driven. This electric motor can e.g. B. depending on the shape and size of the vehicle door directly in the area of the gear wheel drives on the underside of the window or on the module carrier itself be firmly installed. In the latter case the power is on for the A person skilled in the art, e.g. B. via a rigid or flexible Shaft or a threaded rod, to the gear transmission In the same way, the force on the tooth or Schnec kenrad are transmitted when engine and transmission on the module carrier present. As engines that are on or at the Window pane are attached and with this relative to the door radio  so-called flat motors on.

To the shaft or threaded rod for power transmission to the Gear or the threaded spindle or on the gear or Worm gear, provided the latter is also on or on the fen one or more guide elements elements are formed with which a reliable course of the Gear or worm wheel is guaranteed on the rack. For this purpose, e.g. B. on the rack also a rail be shaped in which the guide element engages.

In a further embodiment of the invention, two or several racks and / or threaded spindles essentially pa be arranged parallel to each other on the module carrier. This out Design is particularly useful when there is a particularly large area heavy or heavy windows, e.g. B. bulletproof glass to be moved.

In the following the invention is based on an only one leadership illustrative drawing explained in more detail. It shows gene:

Fig. 1 shows a door function module ( 1 ), comprising a module carrier ( 2 ) with a one-piece integrated rack ( 3 ), which is aligned substantially vertically. In the rack ( 3 ) engages a gear transmission ( 4 ) which is attached to the underside of the window pane ( 5 ), for. B. via a clamp or a clamping element ( 8 ), and via a flexible shaft ( 6 ) with an on the module carrier ( 2 ) fixed electric motor ( 7 ) is driven and controlled.

Fig. 2 shows a cross section through a door function module ( 1 ) comprising a module carrier ( 2 ) with an integrally molded rack ( 3 ), the gear mechanism ( 4 ) being driven via a shaft ( 6 ). Shaped to the shaft is a clamping element ( 8 ), which establishes the connection to the disk 5 and which simultaneously engages in a guide rail ( 9 ). ( 10 ) represents another guide element.

By offering a wide range of components and component elements / components the module carrier pre-assembled or during the manufacture of the module carrier can be molded at the same time, an un complicated final assembly of the door function module according to the invention allows on the inside of motor vehicle doors.  

Another advantage is that it works properly ren of the window lifting and lowering devices of the invention Door function modules the window guide rail (s) over the Has to reach the edge of the module carrier.

Claims (14)

1. Module carrier for a vehicle door comprising at least one Rack or a threaded spindle. 2. Module carrier according to claim 1, which at least one window has disc guide rail. 3. Module carrier according to claims 1 or 2, characterized records that window pane guide rail or rack are integrally connected to the module carrier. 4. Module carrier according to claims 1 to 3, characterized net that the window pane guide rail does not have the essentially horizontal perimeter limits of the module protrudes from the wearer. 5. Module carrier according to claims 1 to 4, essentially be made of reinforced or unreinforced thermoplastic Plastics. 6. Module carrier according to claims 1 to 5, essentially be made of polypropylene, polyesters, polycarbonates, Styrene (co) polymers or their mixtures. 7. Use of the module carrier according to claims 1 to 6 for the production of door function modules. 8. Door function module comprising a module carrier according to the An say 1 to 6 and a window pane in the lower Area of the window pane, especially in the area of the Un edge, a gear or a worm wheel on, on or with this is attached or connected to the rack or threaded spindle engages. 9. Door function module according to claim 8, characterized in that that a gear or worm gear drive in the lower area attached to, on or with the window pane or connected. 10. Door function module according to claims 8 or 9, characterized ge indicates that a motor for the tooth or worm gear drive in the lower area of the window pane, on or attached or connected to this.   11. Door function module according to claim 9, characterized in that that a motor for the gear or worm gear drive on the Module carrier attached and via a rigid or flexible Shaft or a threaded rod with the tooth or worm wheel gear is connected. 12. Door function module according to claim 8, characterized in that the gear or worm gear on the module carrier ger attached and via a rigid or flexible shaft or a threaded rod is connected to the toothed or worm wheel is. 13. Door function module according to claim 12, characterized in that that the motor for the gear or worm gear drive on the Module carrier is attached. 14. Use of the door function modules according to claims 8 to 13 for the manufacture of vehicle doors, in particular of Cars or trucks, rail vehicles, airplanes or ships.