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DE9216598U1 - Adjustment gear, in particular for adjusting the seat in a motor vehicle - Google Patents

Adjustment gear, in particular for adjusting the seat in a motor vehicle

Info

Publication number
DE9216598U1
DE9216598U1 DE9216598U DE9216598U DE9216598U1 DE 9216598 U1 DE9216598 U1 DE 9216598U1 DE 9216598 U DE9216598 U DE 9216598U DE 9216598 U DE9216598 U DE 9216598U DE 9216598 U1 DE9216598 U1 DE 9216598U1
Authority
DE
Germany
Prior art keywords
pins
ball
axis
gear according
rotation
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE9216598U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE9216598U priority Critical patent/DE9216598U1/en
Priority to FR9313185A priority patent/FR2698927B3/en
Priority to IT93MI000932 priority patent/IT230533Y1/en
Priority to ES9303213U priority patent/ES1026768Y/en
Publication of DE9216598U1 publication Critical patent/DE9216598U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
    • F16D3/205—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
    • F16D3/2052—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having two pins
    • 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
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • B60N2/23—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by linear actuators, e.g. linear screw mechanisms
    • B60N2/233—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by linear actuators, e.g. linear screw mechanisms by linear screw mechanisms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Seats For Vehicles (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

• ··

• · I· I

R. 25750
3.12.1992 Gl/KeiR.25750
3.12.1992 Gl/Kei

ROBERT BOSCH GMBH, 7000 STUTTGART 30ROBERT BOSCH GMBH, 7000 STUTTGART 30

Verstellgetriebe, insbesondere zum Verstellen des Sitzes in einem KraftfahrzeugAdjustment gear, in particular for adjusting the seat in a motor vehicle

Stand der TechnikState of the art

Die Erfindung geht aus von einem Verstellgetriebe nach dem Oberbegriff des Anspruchs 1. Zum Verstellen von Sitzen in Kraftfahrzeugen, insbesondere zum Verschwenken der Lehne eines Sitzes, sind Verstellgetriebe mit einer Gewindespindel bekannt, die von einem Elektromotor über eine Kardan-Gelenkkupplung angetrieben wird. Erstrebenswert ist ein Verstellgetriebe mit einem einfachen übersichtlichen Aufbau, gebildet aus wenigen und einfach herstellbaren Teilen.The invention is based on an adjustment mechanism according to the preamble of claim 1. For adjusting seats in motor vehicles, in particular for pivoting the backrest of a seat, adjustment mechanisms with a threaded spindle are known, which is driven by an electric motor via a cardan joint coupling. What is desirable is an adjustment mechanism with a simple, clear structure, made up of a few and easy-to-manufacture parts.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Verstellgetriebe mit den kennzeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, daß die Gelenkkupplung nur aus drei Teilen zusammengesetzt ist, nämlich einem Kupplungsstück und zwei Kugeln, die beide gleich gestaltet sind, wobei diese Teile in einfacher Weise durch Spritzformen herstellbar sind. Weitere zweckmäßige Ausgestaltungen der Erfindung lassen sich den Unteransprüchen entnehmen.The adjusting gear according to the invention with the characterizing features of claim 1 has the advantage that the joint coupling is composed of only three parts, namely a coupling piece and two balls, both of which are designed the same, whereby these parts can be produced in a simple manner by injection molding. Further useful embodiments of the invention can be found in the subclaims.

- 2 - R. 25750- 2 - R.25750

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben. Es zeigen Figur 1 ein Verstellgetriebe für einen Sitz in einem Kraftfahrzeug in Seitenansicht, Figur 2 ein Gelenk des Verstellgetriebes nach Figur 1 im Querschnitt in der Ebene II-II der Figur 1 in vergrößertem Maßstab, Figur 3 eine erste Variante eines Gelenks im Längsschnitt und Figur 4 eine zweite Veriante des Gelenks im Querschnitt.Embodiments of the invention are shown in the drawing and are described in more detail below. Figure 1 shows an adjustment mechanism for a seat in a motor vehicle in side view, Figure 2 shows a joint of the adjustment mechanism according to Figure 1 in cross section in the plane II-II of Figure 1 on an enlarged scale, Figure 3 shows a first variant of a joint in longitudinal section and Figure 4 shows a second variant of the joint in cross section.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Ein verstellbarer Teil eines Sitzes in einem Kraftfahrzeug, beispielsweise eine Lehne 10 trägt einen Hebel 11 von dem ein Ende an einem Querbolzen 12 einer Gewindemutter 13 angelenkt ist. Die Gewindemutter 13 ist auf dem Schraubengewinde einer Gewindespindel 15 axial verschiebbar, welche in einem Lagerbock 16 dreh- und schwenkbar gelagert ist. Da die Drehachse der Gewindespindel 15 nicht ortsfest, sondern auf einem Bogen verschwenkbar angeordnet ist, ist die Gewindespindel 15 mit der Antriebswelle 18 eines Elektromotors 19 über eine Gelenkkupplung 21 verbunden.An adjustable part of a seat in a motor vehicle, for example a backrest 10, carries a lever 11, one end of which is articulated to a cross bolt 12 of a threaded nut 13. The threaded nut 13 can be moved axially on the screw thread of a threaded spindle 15, which is mounted in a bearing block 16 so that it can rotate and pivot. Since the axis of rotation of the threaded spindle 15 is not fixed in place, but can pivot on an arc, the threaded spindle 15 is connected to the drive shaft 18 of an electric motor 19 via a joint coupling 21.

Die Gelenkkupplung 21 weist eine Hülse 22 mit in deren Stirnseiten eingeformten offenen Kugelpfannen 23 auf. In die Kugelpfannen 23 sind Kugeln 24 eingesetzt, von denen die eine mit einer Bohrung mit Innenverzahnung auf dem verzahnten Ende 25 der Antriebswelle 18 und die andere auf dem in gleicher Weise verzahnten Ende 26 der Gewindespindel 15 sitzt. Zum Übertragen der Drehbewegung haben die beiden gleich ausgebildeten Kugeln 24 quer zu ihrer Drehachse zwei diametral abstehende Zapfen 27, die in Längsschlitze 28 in der die Kugelpfannen 23 begrenzenden Wand 29 der Hülse 22 ragen.The joint coupling 21 has a sleeve 22 with open ball sockets 23 formed in its front sides. Balls 24 are inserted into the ball sockets 23, one of which sits with a bore with internal teeth on the toothed end 25 of the drive shaft 18 and the other on the similarly toothed end 26 of the threaded spindle 15. To transmit the rotary motion, the two identically designed balls 24 have two diametrically projecting pins 27 transverse to their axis of rotation, which protrude into longitudinal slots 28 in the wall 29 of the sleeve 22 delimiting the ball sockets 23.

Vorzugsweise haben die Zapfen 27 die Form eines Kegelstumpfes 31, dessen gedachte Spitze in der Drehachse der Kugeln 24 bzw. der HülsePreferably, the pins 27 have the shape of a truncated cone 31, the imaginary tip of which is in the axis of rotation of the balls 24 or the sleeve

- 3 - R. 25750- 3 - R.25750

22 liegt (Figur 2). Dementsprechend haben die Längsschlitze 28 die Querschnittsform eines gleichseitigen Trapezes, von dem die gedachte Spitze der Seiten ebenfalls in der Drehachse der Hülse 22 liegt. Zwischen den Zapfen 27 und den Flanken der Längsschlitze 2 8 ist Spiel im Größenbereich um 0,1mm vorhanden, um beim Verschwenken der Zapfen 27 gegenüber den Längsschlitzen 28 ein Klemmen zu vermeiden.22 (Figure 2). Accordingly, the longitudinal slots 28 have the cross-sectional shape of an equilateral trapezoid, of which the imaginary tip of the sides also lies in the axis of rotation of the sleeve 22. There is play of around 0.1 mm between the pins 27 and the flanks of the longitudinal slots 28 in order to avoid jamming when the pins 27 are pivoted relative to the longitudinal slots 28.

Die Zapfen 27 können auch eine zylindrische Form und die Längsschlitze 28 eine Rechteckform haben. Eine solche Ausfuhrungsform hat gegenüber der in Figur 2 dargestellten Kegelstumpf-/Trapezform den Nachteil, daß beim Betrieb Radialkräfte auf die Wände 29 der HülseThe pins 27 can also have a cylindrical shape and the longitudinal slots 28 a rectangular shape. Such an embodiment has the disadvantage compared to the truncated cone/trapezoid shape shown in Figure 2 that during operation radial forces are exerted on the walls 29 of the sleeve

22 übertragen werden, die ein Aufdrücken der Kugelpfanne 23 bewirken. Ein solches Aufdrücken der Pfannen wird verhindert, wenn zylindrisch ausgebildete Zapfen 27 einen Abschlußflansch 33 aufweisen, der formschlüssig auf die Außenseite der die Kugelpfanne begrenzenden Wand 34 übergreift, wobei diese Wand 34 auch auf der Außenseite eine Kugelform hat (Figur 3). Die Zapfen 27 können alternativ auch eine konkave Umfangsflache und die Anlageflächen der Längsschlitze 28 eine komplementär konvexe Form haben (Figur 4). Auch bei dieser Gestaltung wirken keine Radialkräfte auf die Wände 29 der Kugelpfannen 23.22, which cause the ball socket 23 to be pressed open. Such pressing open of the sockets is prevented if cylindrically shaped pins 27 have a closing flange 33, which engages in a form-fitting manner on the outside of the wall 34 delimiting the ball socket, whereby this wall 34 also has a spherical shape on the outside (Figure 3). The pins 27 can alternatively also have a concave peripheral surface and the contact surfaces of the longitudinal slots 28 can have a complementary convex shape (Figure 4). With this design, too, no radial forces act on the walls 29 of the ball sockets 23.

Die Hülse 22 und die Kugeln 24 sind vorzugsweise aus einem thermoplastischen Kunststoff spritzgeformt. Die Öffnungsweite der beiden Kugelpfannen 23 der Hülse 22 ist ein wenig kleiner als der Duchmesser der Kugeln 24, so daß diese formschlüssig in den KugelpfannenThe sleeve 22 and the balls 24 are preferably injection-molded from a thermoplastic. The opening width of the two ball sockets 23 of the sleeve 22 is slightly smaller than the diameter of the balls 24, so that they fit positively in the ball sockets.

23 gehalten werden. Montiert werden die Kugeln 24 durch axiales Eindrücken in die Kugelpfannen 23, wobei sie die beiden Wandhälften der Kugelpfannen 23 kurzzeitig elastisch verformen.23. The balls 24 are mounted by pressing them axially into the ball sockets 23, whereby they briefly elastically deform the two wall halves of the ball sockets 23.

Claims (5)

• « 4 R. 25750 3.12.1992 Gl/Kei ROBERT BOSCH GMBH, 7000 STUTTGART 30 Ansprüche• « 4 R. 25750 3.12.1992 Gl/Kei ROBERT BOSCH GMBH, 7000 STUTTGART 30 claims 1. Verstellgetriebe, insbesondere für einen Sitz in einem Kraftfahrzeug, mit einer um eine ortsfeste Achse sich drehenden Antriebswelle und einer mit dieser über eine Gelenkkupplung angetriebene, schwenkbar gelagerte VersteIl-Gewindespindel, dadurch gekennzeichnet, daß die Gelenkkupplung (21) ein Kupplungsstück (22) mit stirnseitigen Kugelpfannen (23) und je eine fest mit der Antriebswelle (18) und der Gewindespindel (15) drehfest verbundene Kugel (24) aufweist, die in den Kugelpfannen (23) gelenkig angeordnet sind, und daß an den Kugeln (24) radial zur Drehachse abstehende Zapfen (27) angeordnet sind, die in Ausnehmungen (28) der die Kugelpfannen (23) umgebenden Wand (29) der Hülse (22) ragen.1. Adjustment gear, in particular for a seat in a motor vehicle, with a drive shaft rotating about a fixed axis and a pivotably mounted adjustment threaded spindle driven by the drive shaft via a joint coupling, characterized in that the joint coupling (21) has a coupling piece (22) with ball sockets (23) on the front side and a ball (24) each fixedly connected to the drive shaft (18) and the threaded spindle (15) in a rotationally fixed manner, which are arranged in an articulated manner in the ball sockets (23), and that pins (27) projecting radially to the axis of rotation are arranged on the balls (24), which project into recesses (28) in the wall (29) of the sleeve (22) surrounding the ball sockets (23). 2. Verstellgetriebe nach Anspruch 1, dadurch gekennzeichnet, daß die Zapfen (27) die Form eines Kegelstumpfs (31) haben, dessen gedachte Spitze im Mittelpunkt der Drehachse der Kugel (24) liegt, und daß die Ausnehmungen (28) einen trapezförmigen Querschnitt haben, dessen gedachte Spitze der geneigten Seiten in der Drehachse der Hülse (22) liegt.2. Adjustment gear according to claim 1, characterized in that the pins (27) have the shape of a truncated cone (31), the imaginary tip of which lies in the center of the axis of rotation of the ball (24), and that the recesses (28) have a trapezoidal cross-section, the imaginary tip of the inclined sides of which lies in the axis of rotation of the sleeve (22). 3. Verstellgetriebe nach Anspruch 1, dadurch gekennzeichnet, daß die Zapfen (27) die Form eines Zylinders mit einem Abschlußflansch (33) haben, der auf die kugelig ausgebildete Außenseite der Wand (29) der Kugelpfannen (23) übergreift.3. Adjusting gear according to claim 1, characterized in that the pins (27) have the shape of a cylinder with an end flange (33) which overlaps the spherical outer side of the wall (29) of the ball sockets (23). - 2 - R. 25750- 2 - R.25750 4. Stellgetriebe nach Anspruch 1, dadurch gekennzeichnet, daß die Umfangsseite der Zapfen (27) konkav und die Flanken der Ausnehmungen (28) komplementär konvex ausgebildet sind.4. Actuating gear according to claim 1, characterized in that the circumferential side of the pins (27) are concave and the flanks of the recesses (28) are complementarily convex. 5. Verstellgetriebe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Kupplungsstück (22) und die beiden Kugeln (23) aus einem thermoplastischen Kunststoff spritzgeformt sind.5. Adjusting gear according to one of claims 1 to 4, characterized in that the coupling piece (22) and the two balls (23) are injection-molded from a thermoplastic material.
DE9216598U 1992-12-05 1992-12-05 Adjustment gear, in particular for adjusting the seat in a motor vehicle Expired - Lifetime DE9216598U1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE9216598U DE9216598U1 (en) 1992-12-05 1992-12-05 Adjustment gear, in particular for adjusting the seat in a motor vehicle
FR9313185A FR2698927B3 (en) 1992-12-05 1993-11-05 Adjustment mechanism, in particular for adjusting the seat in a motor vehicle.
IT93MI000932 IT230533Y1 (en) 1992-12-05 1993-11-30 ADJUSTMENT MECHANISM, IN PARTICULAR FOR THE ADJUSTMENT OF THE SEAT IN A VEHICLE
ES9303213U ES1026768Y (en) 1992-12-05 1993-12-02 REGULATION MECHANISM, ESPECIALLY TO REGULATE THE SEAT OF A MOTORIZED VEHICLE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9216598U DE9216598U1 (en) 1992-12-05 1992-12-05 Adjustment gear, in particular for adjusting the seat in a motor vehicle

Publications (1)

Publication Number Publication Date
DE9216598U1 true DE9216598U1 (en) 1994-03-31

Family

ID=6886810

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9216598U Expired - Lifetime DE9216598U1 (en) 1992-12-05 1992-12-05 Adjustment gear, in particular for adjusting the seat in a motor vehicle

Country Status (4)

Country Link
DE (1) DE9216598U1 (en)
ES (1) ES1026768Y (en)
FR (1) FR2698927B3 (en)
IT (1) IT230533Y1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531702A1 (en) * 1995-08-28 1997-03-06 Johnson Controls Naue Engineer Drive to adjust relative position of parts, especially on vehicle seat
DE10159037B4 (en) * 2000-07-07 2009-04-09 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Adjustment device for motor vehicle seats
DE102011055438B4 (en) * 2010-12-10 2014-05-15 C. Rob. Hammerstein Gmbh & Co. Kg Adjustment device for a motor vehicle seat

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531702A1 (en) * 1995-08-28 1997-03-06 Johnson Controls Naue Engineer Drive to adjust relative position of parts, especially on vehicle seat
DE10159037B4 (en) * 2000-07-07 2009-04-09 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Adjustment device for motor vehicle seats
DE102011055438B4 (en) * 2010-12-10 2014-05-15 C. Rob. Hammerstein Gmbh & Co. Kg Adjustment device for a motor vehicle seat

Also Published As

Publication number Publication date
ES1026768Y (en) 1994-12-01
ES1026768U (en) 1994-06-01
ITMI930932V0 (en) 1993-11-30
FR2698927A3 (en) 1994-06-10
IT230533Y1 (en) 1999-06-07
ITMI930932U1 (en) 1995-05-30
FR2698927B3 (en) 1994-10-14

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