WO2007144131A1 - Écrou de broche pour dispositifs de positionnement de véhicule automobile - Google Patents

Écrou de broche pour dispositifs de positionnement de véhicule automobile Download PDF

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Publication number
WO2007144131A1
WO2007144131A1 PCT/EP2007/005139 EP2007005139W WO2007144131A1 WO 2007144131 A1 WO2007144131 A1 WO 2007144131A1 EP 2007005139 W EP2007005139 W EP 2007005139W WO 2007144131 A1 WO2007144131 A1 WO 2007144131A1
Authority
WO
WIPO (PCT)
Prior art keywords
spindle nut
supporting structure
nut according
spindle
plastic
Prior art date
Application number
PCT/EP2007/005139
Other languages
German (de)
English (en)
Inventor
Ingo Quast
Jochen Hofmann
Gregor KRÖNER
Toni Werrmann
Andrea Bauersachs
Original Assignee
Brose Fahrzeugteile Gmbh & Co. Kg,
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brose Fahrzeugteile Gmbh & Co. Kg, filed Critical Brose Fahrzeugteile Gmbh & Co. Kg,
Priority to DE112007001201T priority Critical patent/DE112007001201A5/de
Publication of WO2007144131A1 publication Critical patent/WO2007144131A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B60N2/067—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable by linear actuators, e.g. linear screw mechanisms

Definitions

  • the invention relates to a spindle nut for Kraft mecanictell familiaren according to the preamble of claim 1.
  • Such a spindle nut is set up and provided for installation in a spindle drive of a motor vehicle adjustment device and has a sufficiently strong base structure for receiving and passing on adjusting forces and an internal thread which can be brought into engagement with a threaded spindle of the spindle drive.
  • adjusting parts in motor vehicles such as parts of a motor vehicle seat (seat parts) to adjust by means of a spindle drive comprehensive adjustment.
  • a rail longitudinal guide which includes a guide rail to be arranged in the body and a guide rail carrying the seat frame.
  • the two guide rails engage longitudinally displaceable, so that through Movement of the seat frame fixed guide rail along the vehicle-fixed guide rail, the seat longitudinal position of the supported by the guide rail vehicle seat can be adjusted.
  • one of the two guide rails is a spindle and the other guide rail associated with a spindle nut which engages with its internal thread, the external thread of the threaded spindle, wherein the spindle and spindle nut are rotatable relative to each other and longitudinally displaceable.
  • a spindle drive for adjusting an adjusting part of a motor vehicle is thus based on the fact that a rotational movement generated by a motor drive can be converted by means of the spindle drive into a longitudinal movement.
  • the threaded spindle and the spindle nut are both rotatable relative to each other and in the longitudinal direction (ie along the extension direction of the threaded spindle) movable.
  • one of the two components of the spindle drive so either the threaded spindle or the spindle nut rotatably mounted and rotatably mounted the other of the two components, so that the threaded spindle can be screwed through the spindle nut, wherein the longitudinal movement of the two components is generated to each other , which is transmitted to the adjustment part, for example by means of the above-mentioned guide rails on a motor vehicle seat to be adjusted as adjustment.
  • the adjustment part for example by means of the above-mentioned guide rails on a motor vehicle seat to be adjusted as adjustment.
  • individual seat parts or alternatively other vehicle parts can be adjusted by means of a spindle drive.
  • a sufficiently rigid basic structure is understood to mean a structure of the threaded spindle which has sufficient strength to absorb the adjusting forces occurring on the threaded spindle during operation of the spindle drive and to derive them into a motor vehicle part to which the threaded spindle is fastened by means of its basic structure.
  • the threaded spindle is fastened, for example via its base structure on one of the two guide rails, wherein the base structure must have a sufficient strength (rigidity) to accommodate the adjustment forces occurring during a seat longitudinal adjustment and the corresponding guide rail in the Derive vehicle body.
  • the invention is based on the problem to provide a spindle nut for a motor vehicle adjustment a spindle nut, which is characterized by low strength and ease of manufacture by sufficient strength to transmit the occurring adjusting forces can.
  • the base structure of the spindle nut is formed as a supporting structure surrounding a plastic existing, provided with the internal thread of the spindle nut engagement region of the spindle nut, wherein the supporting structure of a different, more rigid material than the engagement region of the spindle nut.
  • the basic structure ensures as a supporting structure sufficient strength of the spindle nut for transmitting occurring during operation of the spindle drive Verstellmomente and adjusting.
  • the supporting structure of the spindle nut made of metal or of high-strength plastic (eg fiber-reinforced plastic) can be used in order to lock it (rotationally fixedly) to an associated vehicle component, such as e.g. a guide rail of a rail longitudinal guide to fasten.
  • an associated vehicle component such as e.g. a guide rail of a rail longitudinal guide to fasten.
  • the engaging with the associated threaded spindle more precisely with its external thread to be engaged and provided with an internal thread engagement region of the spindle nut consists of gleitoptimiertm (friction-optimized) plastic, resulting in a small Contributes weight and cost manufacturability of the spindle nut while ensuring a sufficient ease of the spindle drive.
  • the existing of a comparatively solid material supporting structure of the spindle nut annular surrounding the plastic engagement region may have a tubular (in particular cylindrical) portion which encloses the plastic engagement region of the spindle nut.
  • the engagement region of the spindle nut is rotationally fixed in the tubular portion of the supporting structure, for example by means of a positive and / or non-positive connection.
  • the engagement region can be screwed into the tubular section of the supporting structure via mutually associated threads and thereby, e.g. be fixed by an adhesive bond, rotationally fixed in the supporting structure.
  • the plastic engagement region is integrally formed on the supporting structure, in particular molded.
  • the engagement region may be part of a plastic cladding of the supporting structure, which surrounds the supporting structure not only on an inner side to form an internal thread, but also covers the supporting structure on the outside facing away from the engagement region.
  • securing elements are provided which prevent rotation or displacement of the engagement region relative to the supporting structure.
  • These can be formed for example by elevations and / or depressions on the supporting structure on the one hand and on the engagement area on the other hand, which engage in a form-fitting manner.
  • annular elevations and depressions are expedient, which may also be designed in the manner of a thread.
  • the supporting structure of the spindle nut may, for example, when using metal for this purpose as an extruded part or a sheet metal part, in particular in the form of a stamped and bent part, be formed, wherein for forming a engagement portion receiving tubular portion, a connecting portion is provided, are connected to the two sections of the supporting structure, for example by a positive connection or by a welded connection.
  • reinforced plastic for the supporting structure of the existing of another, sliding optimized plastic engagement region may be integrally formed on the supporting structure by the so-called two-component technique.
  • the load-bearing structure on the one hand and the engagement area of the threaded spindle on the other hand may be made of different plastics together in one (injection) casting tool.
  • the supporting structure has one or more attachment portions, which serve to attach the spindle nut to an associated vehicle component.
  • These attachment portions can on the one hand for positive fixing of the supporting structure and thus the
  • attachment portions may have attachment openings that are of a suitable
  • Fastening means e.g. in the form of a screw or rivet, to be engaged in order to connect to an associated vehicle part.
  • the plastic engagement region of the spindle nut may be provided with reinforcing inserts for increasing the strength, e.g. in the form of reinforcing fibers or in the form of metal parts, which may optionally be provided specifically at those locations where increased strength is of importance.
  • a spindle drive with an inventively designed spindle nut is characterized by the features of claim 42.
  • Figure 1 shows a first embodiment of a metal existing support structure for a spindle nut
  • FIG. 2a shows a spindle nut with a supporting structure made of metal and an engagement area made of plastic
  • Figure 2b shows the supporting structure of the spindle nut of Figure 2a
  • FIG. 3 a shows a further embodiment of a spindle nut with a supporting structure made of metal and an engagement area made of plastic;
  • FIG. 3b shows the spindle nut from FIG. 3a with a partially cutaway supporting structure
  • FIG. 3c shows a modification of the arrangement from FIG. 3b
  • Figure 4 shows another embodiment of a metal existing support structure for a spindle nut
  • Figure 5 shows an additional embodiment of a metal supporting structure for a spindle nut
  • 6a shows an embodiment of a positive connection between two sections of a supporting structure for a
  • FIG. 1 shows a first exemplary embodiment of a load-bearing structure 1 (basic structure) made of metal for a spindle nut of an adjustment device of a motor vehicle, which can be brought into engagement with an associated threaded spindle in a spindle drive.
  • a load-bearing structure 1 basic structure
  • the supporting structure 1 shown in Figure 1 consists of sheet metal and is formed as a stamped and bent part. That is, a sheet metal part separated by punching was inserted into the in Figure 1 recognizable shape bent in which it forms a supporting structure for a spindle nut.
  • the supporting structure 1 comprises a substantially hollow-cylindrical tubular section 10 which has been produced from the underlying sheet-metal part by bending and which is fixed in that two adjoining sections 10 a, 10 b of the tubular section 10 are welded together along a connecting region S.
  • a fastening openings 16 fastening portion 15 fastening portion 15, via which the supporting structure 1 can be fastened to an associated motor vehicle part, for example a guide rail of a seat longitudinal guide.
  • fasteners such as e.g. Screws or rivets which pass through the attachment openings 16 of the supporting structure 1 and which are to be determined in a suitable manner on the associated motor vehicle part.
  • the load-bearing structure 1 can be fastened in a torque-proof manner to the associated motor vehicle part.
  • a spindle nut of the metallic structure 1 shown in Figure 1 is provided on the inside of its tubular portion 10 with a plastic engaging portion having an internal thread, which is engageable with the external thread of an associated threaded spindle. Because of the rotationally fixed arrangement of the supporting structure 1 - and thus the spindle nut formed therefrom in total - this is provided for cooperation with a rotatably mounted and by means of an associated drive motor to be rotated spindle.
  • the supporting structure 1 is also encapsulated with a plastic coating on its outside, in particular also in the region of the attachment section 15. Furthermore, the supporting structure 1 can have pressed-in geometries which prevent a twisting or displacement of the molded-on plastic.
  • FIGS. 2a and 2b show a first exemplary embodiment of a complete spindle nut and an associated supporting structure 1 made of metal.
  • the supporting structure 1 is in turn formed as a punched-bent part consisting of sheet metal, which on the one hand has a tubular section 10 produced by bending and on the other hand has a protruding therefrom, formed by two free legs 17 of the supporting structure 1 mounting portion on which are provided as fastening points form-fitting elements 18 in the form of fastening projections.
  • free legs 17 of the supporting structure 1 are still from bending areas 19, which serve to form a mounting opening 26 after encapsulation of the supporting structure 1 with plastic, see Fig. 2a.
  • a fixing means which extends through this attachment opening serves in addition to the form-fit elements for fixing the spindle nut to an associated motor vehicle part, wherein the force transmission essentially takes place via the hook-like form-fitting elements 18 formed integrally on the supporting structure 1.
  • the force transmission essentially takes place via the hook-like form-fitting elements 18 formed integrally on the supporting structure 1.
  • Figure 2a shows a complete spindle nut made on the basis of the supporting structure 1 of Figure 2b.
  • the supporting structure 1 is provided on the inside of its tubular portion 10 with an internal thread 20 having, made of plastic engaging portion 2, which has been molded, for example, to the inner surface of the tubular portion 10.
  • an internal thread 20 having, made of plastic engaging portion 2, which has been molded, for example, to the inner surface of the tubular portion 10.
  • For axial securing of the thereby forming connection between the metal tubular portion 10 and the plastic engaging portion 2 of the tubular portion 10 is provided on its inner side with circumferentially extending grooves 101 which are filled in the formation of the engagement portion 2 with plastic, so that the engagement region 2 is additionally secured in a form-fitting manner on the inside of the tubular portion 10.
  • the supporting structure 1 made of metal surrounds with its tubular portion 10 the engagement region 2 of a spindle nut provided with an internal thread 20, whose engagement region 2 can be brought into engagement with the external thread of an associated threaded spindle via the internal thread 20 and its metallic structure 1 for stabilization and for attachment to an associated motor vehicle part via the form-locking elements 18 is used.
  • the engagement region 2 protrudes at both end sides of the tubular portion 10 of the supporting structure. 1 each with an end portion 22 in the form of a collar out of the tubular portion 10 of the supporting structure 1, see also Figure 3a.
  • the supporting structure 1 of the spindle nut is provided not only on the inside of its tubular section 10 with an engagement region 2 made of plastic, but also outside the engagement region, in particular along the attachment section 17, with a plastic coating 3 is provided.
  • FIGS. 3a and 3b show a modification of the spindle nut from FIGS. 2a and 2b, the supporting structure 1 of which being designed as an integrally formed metal part.
  • the supporting structure 1 of the spindle nut illustrated in FIGS. 3 a and 3 b is an extruded part integrally connected to one another by a substantially hollow cylindrical tubular section 10 for receiving a plastic engagement section 2 provided with an internal thread 20 and a fastening opening 16chemicaler attachment portion 15 are formed for attachment of the spindle nut on a motor vehicle part.
  • an internal thread 102 is provided on the inside of the tubular portion 1 an external thread 202 of the engagement portion 2 cooperates.
  • the male thread 202 of the plastic engaging portion 2 is automatically generated upon injection of the engaging portion 2 into the tubular portion 10 provided on its inner surface with a corresponding female thread 102.
  • corresponding stops can be formed on the profile of the supporting structure 1.
  • FIG. 3 c shows a spindle nut with a supporting structure 1 and an engagement region 2 having an internal thread 20, wherein, as in the case of FIG. 3 b, the supporting structure 1 is cut open in the region of its tubular section 10 around the interior of the tubular section 10 and in particular there provided, made of plastic engaging portion. 2 to make it more recognizable.
  • the arrangement from FIG. 3c corresponds identically to the illustration from FIG. 3a. That is, it is in the supporting structure 1 again an integrally molded extrusion with a tubular portion 10 and an integrally formed therewith attachment portion 15, the fastening openings 16 has.
  • the tubular portion 10 is provided on its the existing plastic engaging portion 2 inner surface to form securing areas on the one hand with circumferentially circumferential grooves 104 for axial securing and on the other hand with axially extending longitudinal grooves 106 for preventing rotation, wherein in the circumferentially extending grooves 104 corresponding circumferentially extending outer projections 204 and in the longitudinal grooves 106 corresponding longitudinally extending elevations 206 engage as securing portions on the outer surface of the engagement portion 2.
  • FIGS. 4 and 5 show two further exemplary embodiments of a supporting structure 1 for a spindle nut, wherein a translucent representation was provided here for better recognizability of the interior of the respective (substantially hollow cylindrical) tubular section 10.
  • the supporting structure 1 of a spindle nut is formed as a sheet metal part, in particular stamped and bent part, with a tubular portion 10 produced by bending for receiving an existing plastic engagement region and with a likewise produced by bending and provided with mounting holes 16 Attachment section 15 for the rotationally fixed attachment of the spindle nut to an associated motor vehicle part.
  • two adjacent sections 10a, 10b of the tubular portion 10 are connected by positive locking elements 12 in the manner of a lock to fix the tubular portion 10 of the supporting structure 1 together.
  • FIG. 4 also applies to the supporting structure 1 shown in FIG. 5, which is likewise a sheet-metal part.
  • the main difference between the supporting structure 1 of Figure 5 and the supporting structure of Figure 4 consists in the formation of the mounting portion for non-rotatable connection of the supporting structure 1 of the spindle nut to an associated motor vehicle part.
  • two separate Attachment tabs 15a, 15b are provided, which - instead of a respective attachment opening - are each provided with a threaded passage 16a or 16b, in which a fastening screw can be screwed directly.
  • the two subsections 10a, 10b of the tubular section 10 of the supporting structure 1 to be connected each have, at their adjacent ends, comb-like connecting regions 11a, 11b which engage in one another.
  • the free ends 13 (heads) of the one comb-like region 11a are permanently (plastically) deformed by the action of an external force F according to FIG. 6b.
  • the embodiments described above each show a partially made of metal and partially made of plastic spindle nut as a so-called insert or Outsertteil, which has on the one hand a metal supporting structure, each having a tubular (substantially hollow cylindrical) section for introducing a comprises an internally threaded, plastic engaging portion and is provided with a fastening portion for (non-rotatable) attachment of the spindle nut via its supporting structure on a motor vehicle part.
  • the respective plastic engagement region can be introduced by plastic injection or by means of a thread by turning in the tubular portion of the respective metallic supporting structure.
  • the load-bearing structure may, on the one hand, be formed in one piece as an extruded part or a stamped and bent part or else of a plurality of components, e.g. by welding, in which case in particular a tube and an angle element for forming the tubular portion on the one hand and the fastening portion on the other hand can be connected to each other.
  • connection methods are applicable, for example, substance-liquid Connections (by welding or gluing) or positive connections, eg by locking elements.
  • Engagement region arranged, wherein preferably a collar of the engagement area for
  • the supporting structure may also be coated on its outside, and in particular also at its attachment portion, with plastic, e.g. by injection molding a plastic cladding.
  • corresponding form elements may be provided on the inner surface of the tubular portion which cooperate with corresponding counter-elements on the outer surface of the engaging portion located in the tubular portion and which form an anti-rotation and / or axial securing means ,
  • the engaging portion to be arranged in the tubular portion of the respective supporting structure, made of plastic and forming the internal thread of the spindle nut, can be used in more stressed zones with reinforcing fillers, e.g. Be provided fibers or nets of glass, Teflon or the like, which contribute to a stiffening of the plastic material.
  • reinforcing fillers e.g. Be provided fibers or nets of glass, Teflon or the like, which contribute to a stiffening of the plastic material.
  • metal inserts such as e.g. Perforated sheets, sleeves, perforated sleeves or springs, be integrated.
  • a reinforcement is particularly useful in those places where attack fasteners that serve to attach the spindle nut to an associated motor vehicle part.
  • corresponding recesses, blind holes, through holes, threaded sections, latching projections or the like may be formed in the supporting structure of the spindle nut and / or in plastic zones of the spindle nut.
  • a metallic base structure was used as the supporting structure 1 of the respective spindle nut. All embodiments can, however, in a corresponding manner with a high-strength, z. As fiber-reinforced plastic existing supporting structure 1 can be realized.
  • the load-bearing structure 1 consists of a material (metal or high-strength plastic) which has sufficient strength to absorb adjustment forces acting on a spindle drive and to be able to divert them via the associated attachment section 15 into another motor vehicle part.
  • a sufficient strength of the base structure in order to withstand to a certain extent beyond the normal adjustment forces beyond crash forces can.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

L'invention concerne un écrou de broche pour un dispositif de positionnement de véhicule automobile qui est configuré et prévu pour être monté dans un mécanisme d'entraînement de broche d'un dispositif de positionnement de véhicule et qui présente une structure de base suffisamment résistante pour recevoir et transmettre des forces de positionnement ainsi qu'un taraudage (20) qui est à mettre en prise avec une tige filetée du mécanisme d'entraînement de broche. Conformément à l'invention, il est prévu que la structure de base soit réalisée sous la forme d'une structure (1) porteuse qui entoure une zone (2) de prise de l'écrou de broche en matière plastique et munie du taraudage (20) et qui se compose d'un matériau différent de celui de la zone (2) de prise.
PCT/EP2007/005139 2006-06-14 2007-06-05 Écrou de broche pour dispositifs de positionnement de véhicule automobile WO2007144131A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112007001201T DE112007001201A5 (de) 2006-06-14 2007-06-05 Spindelmutter für Kraftfahrzeugverstelleinrichtungen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200620009868 DE202006009868U1 (de) 2006-06-14 2006-06-14 Spindelmutter für Kraftfahrzeugverstelleinrichtungen
DE202006009868.2 2006-06-14

Publications (1)

Publication Number Publication Date
WO2007144131A1 true WO2007144131A1 (fr) 2007-12-21

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ID=38464288

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/005139 WO2007144131A1 (fr) 2006-06-14 2007-06-05 Écrou de broche pour dispositifs de positionnement de véhicule automobile

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DE (2) DE202006009868U1 (fr)
WO (1) WO2007144131A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010001503B4 (de) 2009-02-05 2022-01-13 Adient Luxembourg Holding S.À R.L. Spindelantrieb einer Verstelleinrichtung eines Kraftfahrzeugsitzes und Verfahren zum Herstellen eines Spindelantriebs

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008062391A1 (de) * 2008-12-17 2010-06-24 BROSE SCHLIEßSYSTEME GMBH & CO. KG Spindelantrieb für ein Verstellelement eines Kraftfahrzeugs
DE202009001847U1 (de) 2009-02-11 2010-07-01 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Spindelantrieb für eine Sitzlängsverstellung eines Kraftfahrzeugsitzes
DE102009049194A1 (de) 2009-10-13 2011-06-16 Comprisetec Gmbh Spindelmutter für ein Kraftfahrzeugverstellsystem und Herstellungsverfahren
JP2018509338A (ja) * 2015-03-24 2018-04-05 アディエント ルクセンブルク ホールディング エス エー アール エル 車両座席用の調節装置及び車両座席
DE102021100886B8 (de) 2020-10-06 2022-06-02 Adient Engineering and IP GmbH Längseinsteller und fahrzeugsitz

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340551A1 (fr) * 1988-05-05 1989-11-08 E.A. Storz Gmbh & Co. Kg Cric
US5860319A (en) * 1996-12-19 1999-01-19 Lear Corporation Reduced noise drive block for vehicle seat adjuster
EP0858403B1 (fr) * 1995-11-03 2002-04-10 Lear Corporation Bloc d'entrainement du type a cardan pour dispositif de reglage de la position d'un siege de vehicule

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340551A1 (fr) * 1988-05-05 1989-11-08 E.A. Storz Gmbh & Co. Kg Cric
EP0858403B1 (fr) * 1995-11-03 2002-04-10 Lear Corporation Bloc d'entrainement du type a cardan pour dispositif de reglage de la position d'un siege de vehicule
US5860319A (en) * 1996-12-19 1999-01-19 Lear Corporation Reduced noise drive block for vehicle seat adjuster

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010001503B4 (de) 2009-02-05 2022-01-13 Adient Luxembourg Holding S.À R.L. Spindelantrieb einer Verstelleinrichtung eines Kraftfahrzeugsitzes und Verfahren zum Herstellen eines Spindelantriebs

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Publication number Publication date
DE202006009868U1 (de) 2007-10-18
DE112007001201A5 (de) 2009-07-16

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