WO1996000666A1 - Systeme de reglage rapide, manuel et passif - Google Patents

Systeme de reglage rapide, manuel et passif Download PDF

Info

Publication number
WO1996000666A1
WO1996000666A1 PCT/EP1995/002472 EP9502472W WO9600666A1 WO 1996000666 A1 WO1996000666 A1 WO 1996000666A1 EP 9502472 W EP9502472 W EP 9502472W WO 9600666 A1 WO9600666 A1 WO 9600666A1
Authority
WO
WIPO (PCT)
Prior art keywords
slide
quick adjustment
worm
adjustment according
locking
Prior art date
Application number
PCT/EP1995/002472
Other languages
German (de)
English (en)
Inventor
Georg Scheck
Carsten Brand
Markus Fischer
Jürgen Angermüller
Hans Rampel
Udo Dreher
Original Assignee
Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft
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
Priority claimed from DE4422529A external-priority patent/DE4422529C2/de
Application filed by Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft filed Critical Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft
Publication of WO1996000666A1 publication Critical patent/WO1996000666A1/fr

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
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • 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
    • B60N2/90—Details or parts not otherwise provided for
    • B60N2/919—Positioning and locking mechanisms
    • B60N2/933—Positioning and locking mechanisms rotatable

Definitions

  • the invention relates to manual quick adjustment, in particular for adjustment parts in or on motor vehicles, without a separate drive unit according to the preamble of patent claim 1.
  • the quick adjustment can advantageously be used for passively adjustable seats, but also for doors and flaps.
  • US Pat. No. 4,589,301 describes a generic adjustment device with a linearly continuously adjustable mechanism for the relative positioning of components.
  • the device consists of a linearly displaceable spindle which is connected to an adjustment object (eg the back of a seat).
  • an adjustment object eg the back of a seat.
  • the spindle rests in the bore of a housing and, on the other hand, in a bore of a cup-shaped union nut, which has a Thread is rotatably connected to the housing.
  • a spindle nut is rotatably supported on the spindle in the cavity formed by the housing and the union nut. It has recesses on the end face, each of which partially receives a ball bearing with axially acting spring elements. Axial forces of the spindle are supported smoothly via these bearings and the spindle nut can rotate slightly when the device is actuated.
  • the device is locked by screwing the union nut onto the stationary housing part, as a result of which the axial play of the spindle nut is reduced until its ring-shaped end faces are supported or clamped on the housing. Since the spindle nut is now stuck, the spindle can no longer be moved; the device is locked.
  • This solution also has the disadvantage of a relatively elongated structure due to the two-part spring.
  • the elastic behavior of the coil spring also leads to the fact that the selected locking position is flexible.
  • the invention is therefore based on the object of developing a manually operable, passive and infinitely variable quick adjustment, in particular for adjustable components in motor vehicles, which is characterized by high compactness, characterized by a simple construction (easy assembly of fewer components) and reliable operation.
  • the object is achieved by a worm mounted in a housing, the teeth of which, which is designed without self-locking, at the same time carries a locking area to which a locking element designed as a slide is assigned.
  • three variants can be used to implement this principle: Either one uses a separate slide which can be moved independently of the gear elements and which acts on the gear elements (in particular on the toothing of the worm) when it is actuated in the reverse direction, or one also uses this the worm in meshing gear element (toothed segment or worm wheel) as a slide, which is mounted so as to be displaceable against the worm toothing, or the worm itself is used as a slide, its mounting being displaceable in the direction of the toothing of the other gear element is trained.
  • the locking area can be provided at a screw end, which can be frictionally or positively engaged with the slide guided in a common housing.
  • the locking area can be located on the circumference or on the end faces of the screw, to which the corresponding slide is displaced radially or axially with respect to the screw axis.
  • the worm toothing itself can also act as a locking area and engage with a slide.
  • the function of the slide is common to all variants: it blocks any further movement of the self-locking worm and thus an adjustment of the tooth part engaging in the worm toothing, which is connected to an adjusting object, e.g. B. the back of a motor vehicle seat is connected.
  • the slide is actuated by a lever or by another handle (actuating element) adapted to the corresponding purpose.
  • the necessary actuating forces can be transferred via Bowden cables, levers, eccentrics or other technical means.
  • a wedge-shaped circumferential groove can be provided on the screw, with the flanks of which a correspondingly shaped slide in Contact can occur, causing the snail to stop moving.
  • Said angular flanks can of course also form the end faces of the worm, which can preferably be brought into engagement with associated flanks of the housing, the worm being (slightly) radially displaced by a slide in the direction of these flanks.
  • the slide engages directly with the top surface of the worm toothing and, if necessary, additionally presses the toothing of the worm into the toothing of the toothed segment.
  • the slide is designed as a bolt or the like, the free end of which should engage in recesses in the locking area, there is a stepwise adjustment, but these steps are practically not noticeable to the user due to their reduction by the worm teeth .
  • Figure la a side view of a quick adjustment for an adjustable seat of a motor vehicle
  • FIG. 2 - a quick adjustment with positive locking between the locking area and the slide
  • FIG. 3 - a quick adjustment with two locking areas
  • FIG. 4a - a quick adjustment with micro-toothing on the top surface of the toothing of the worm
  • FIG. 4b - a detail from FIG. 4a: locking position of the radially displaceable screw
  • the quick adjustment shown in Figure 1 consists of a base plate 11, a housing 12 fastened with screws 13 and a worm 2 mounted in the housing 12, the toothing 21 of which engages in the toothing 61 of the toothed segment lever 6, these toothings 21, 61 without self-locking interact with each other. Therefore, the worm 2 can rotate freely in its bearings 14, 15 when a force acts on the toothed segment lever 6 and its toothing 61 pivots about the axis 60.
  • a locking area in the form of a circumferential wedge-shaped groove is provided on the worm 2, in which the locking element 3 engages.
  • the locking area is essentially formed by the angled flanks 23, to which correspondingly aligned flanks 30 of the locking element 3 are assigned.
  • the housing 12 can be embodied as an embossed or cast part, wherein advantageously receptacles for the storage of the screw 2 and the guidance of the slide should be integrated.
  • the toothing 61 of the toothed segment lever 6 engages through an opening in the gear 12 and produces a positive connection with the worm toothing 21.
  • the tooth- segment lever 6 is connected to the backrest of a motor vehicle seat and pivotally connected on the axis 60 to the base plate 11 which is mounted on the seat base frame.
  • radial bearings 15 and axial bearings 14 are provided on the journal 22.
  • the axial bearing 14 can be designed as a U-spring or consist of a hard metal plate with a rubber base.
  • a centering of the screw 2 is important because no contact should occur between the end face 24 of the screw 2 and the opposite support surface 16 in the housing 12 when normal adjustment forces occur. This would make the quick adjustment difficult; a desired adjustment movement could even be blocked, although the locking element (slide 3) is not activated. Only when unusually large forces have to be reduced, e.g. B. in the event of a crash, the frictional contact between the support surface 16 and the end face 24 in addition to blocking by the slide 3 for additional security against undesired adjustment.
  • the slide 3 with its wedge-shaped flanks 30 can be clearly seen from the sections of FIGS. 1b and 1c, which can engage the wedge-shaped flanks 23 of the locking region of the screw 2 by radial displacement of the slide 3 along the guide surfaces 17.
  • a (not shown) actuation device e.g. B. a handle
  • the rope 4 is tensioned against the force of the coil spring 5 and releases the engagement between the worm 2 and slide 3 via the rope nipple 41 fastened in the rope suspension 31.
  • This makes an adjustment e.g. the back of a seat). possible. If the actuating device no longer acts on the Bowden cable 4.40, the helical spring 5 supported on the housing 22 presses the slide again into the locking area of the screw 2, so that any further adjustment movement is blocked.
  • the above-described and continuously acting quick adjustment is characterized by a high level of functional reliability, since even in the event of a crash, an adjustment movement, that is to say when the slide 3 and the screw 2 are disengaged, the adjustment movement is interrupted when the end face 24 is connected the support surface 16 engages the crash force and thus leads to the self-locking of the screw 2.
  • the axial displacement of the screw is due to the longitudinal force caused by the sudden acceleration of the inert screw.
  • FIG. 2 shows a further exemplary embodiment, which provides a form-fitting and fine-stage locking of the screw 2a.
  • Radial bearings 15a are incorporated in the housing 10, in which the pins 22a of the screw 2a are mounted.
  • a cylindrical section is machined, which carries radially directed recesses 23a into which a slide designed as a bolt 3a can engage.
  • the activation of the bolt 3a can be carried out in a similar manner to that shown and described in FIG. 1.
  • the quick adjustment is in the release division, ie the worm 2a can rotate freely, which is a prerequisite for an adjustment movement.
  • the bolt 3a engages in one of the recesses 23a and blocks the screw 2a. Should the bolt 3a be placed on a web between the recesses 23a, then due to the fine staging of this quick adjustment, an almost imperceptible movement of the adjustment part (for example the back of a seat) leads to the rotation of the worm 2a to to match the bolt with the next (adjacent) recess 23a.
  • the advantage of this embodiment consists in the absolutely safe blocking of the rapid adjustment even under extreme conditions, such as can occur in the case of vibrations.
  • the toothed segment lever 6b which can be pivoted about an axis 60, with its toothing 61b is in engagement with the toothing 21b of the screw 2b, which is mounted in an upwardly open housing 12b.
  • the pins 22b are stored in bearing points 15b.
  • Opposite the toothed segment lever 6b is a in the housing 12b Slider 3b arranged. It can be displaced in accordance with the directional arrows by means of an eccentric which is constructed from a displacement cam 32 supported on the guide pin 33.
  • An actuating device in turn provides the necessary adjustment forces.
  • the locking area of the worm 2b here represents the top surface of the toothing 21b, which lies opposite the friction surface 30b of the slide 3b.
  • a second locking area of the worm 2b is formed by the conical end face (flank 200b) which can engage with the flank 120b of the housing 12b when the worm 12b is raised in the direction of the toothed segment lever 6b.
  • FIG. 3 shows the locking position in which the friction surface 30b presses against the end face of the worm toothing 21b. At the same time, an engagement between the flanks 120b and 200b is produced, as a result of which a particularly pronounced inhibition of the screw 2b is achieved.
  • This variant is also preferably equipped with resilient centering means in order to avoid play and to ensure that there is also an inhibition in the release position when particularly large forces are exerted on the adjustment. act in part.
  • the worm 2b is pressed with its conical end face (flank 200b) against the flank 120b of the housing 12b and the adjustment movement is interrupted.
  • FIG. 4a The basic structure of the embodiment of FIG. 4a corresponds to that of FIG. 3, but no locking areas are provided on the end faces of the screw 2c.
  • the locking effect is to be strengthened by a special design of the toothing 61c of the toothed segment lever 6c.
  • FIG. 4b it can be seen that the foot surface 610 of the toothing 61c is designed such that a strong radial force component acts when the toothed segment lever 6c is loaded in the locking position and in cooperation with the head surface 210c of the worm 2c. which in connection with the slide 3c leads to a very strong self-locking of the screw 21c.
  • the reason for this lies in the large force angle achieved at the points of contact of the surfaces 610 and 210c.
  • the bearing points 15c have a sufficiently large clearance for the necessary radial displacement of the screw.
  • FIG. 4a schematically shows a micro toothing on the top surface of the worm toothing, which is intended to increase the frictional effect on the friction surface 30c of the slide 3c.
  • this toothing can also be machined on the friction surface.
  • FIGS. 5 and 6 also correspond essentially to the structural design of FIG. 3.
  • a self-locking screw 2d, 2e which is mounted in a housing 12d, 12e, the teeth 21d, 21e of which also have teeth the toothing 61d, 61e of the toothed segment lever 6d, 6e is in engagement.
  • They differ, however, in the choice of the slide acting as a blocking element, which when actuated in the reverse direction to inhibit the worm gear. bes and thus leads to blocking of the adjustment mechanism.
  • FIGS. 1 to 4 no separate locking elements (as in FIGS. 1 to 4) are shown, but components of the mechanics of the quick adjustment itself are used as a locking element.
  • an eccentric is arranged in the axis 60, which consists of a guide pin 33d and a displacement cam 32d and, when actuated, causes a radial displacement of the toothed segment lift 6d in the direction of the worm 2d.
  • the gears 21d, 61d are pressed into each other so that self-locking occurs and the quick adjustment is blocked.
  • the toothed segment lever 6d thus acts as a locking element.
  • the screw 2e is used as a locking element.
  • eccentrics 32e, 33e are arranged in the sides of the housing 12e, which lie approximately on the axis of the screw 2e. When they are actuated, a radial movement is caused which, in the locked position, presses the teeth 21e, 61e into one another and thus blocks the adjustment movement.
  • Tooth (of the tooth segment) b Tooth (of the tooth segment) c Tooth (of the tooth segment) d Tooth (of the tooth segment) e Tooth (of the tooth segment)
  • flank (wedge-shaped, circumferential)
  • flank (wedge-shaped, circumferential)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Gear Transmission (AREA)
  • Gears, Cams (AREA)

Abstract

L'invention concerne un système de réglage rapide manuel, destiné notamment à des éléments réglables dans ou sur un véhicule automobile, sans dispositif d'entraînement séparé. L'invention est caractérisée par une zone de réglage située sur une vis sans fin et avec laquelle peut venir en contact un élément de verrouillage sous forme d'un coulisseau.
PCT/EP1995/002472 1994-06-28 1995-06-26 Systeme de reglage rapide, manuel et passif WO1996000666A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4422529A DE4422529C2 (de) 1993-11-12 1994-06-28 Blockiervorrichtung füe eine manuelle Schnellverstellvorrichtung, insbesondere für Rückenlehnen von Kraftfahrzeugsitzen
DEP4422529.6 1994-06-28

Publications (1)

Publication Number Publication Date
WO1996000666A1 true WO1996000666A1 (fr) 1996-01-11

Family

ID=6521659

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/002472 WO1996000666A1 (fr) 1994-06-28 1995-06-26 Systeme de reglage rapide, manuel et passif

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WO (1) WO1996000666A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088827B (de) * 1956-01-30 1960-09-08 Stuttgarter Karosseriewerk Reu Vorrichtung zum Verstellen der Rueckenlehne von Sitzen, insbesondere fuer Kraftfahrzeuge
FR1282176A (fr) * 1960-12-09 1962-01-19 Faure Bertrand Ets Perfectionnements apportés aux dispositifs d'articulation pour sièges, notamment pour sièges d'automobiles
DE2449180A1 (de) * 1973-11-09 1975-05-15 Sessa T Selbsthemmungsvorrichtung fuer rotierende wellen
DE2822135A1 (de) * 1978-05-20 1979-11-22 Selzer & Co Kg Vorrichtung zur winkelverstellung der rueckenlehne eines sitzes, insbesondere kraftfahrzeugsitzes
DE2931873A1 (de) * 1979-08-06 1981-02-26 Keiper Automobiltechnik Gmbh Gelenkbeschlag mit verstellbarer rueckenlehne, insbesondere fuer kraftfahrzeugsitze
FR2567462A1 (fr) * 1984-07-10 1986-01-17 Cousin Cie Ets A & M Freres Articulation a vis reversible, plus specialement pour reglage de sieges de vehicules terrestres, nautiques et aeriens
US4589301A (en) * 1983-04-27 1986-05-20 Hoover Universal, Inc. Linearly infinitely variable mechanism
WO1993005982A1 (fr) * 1991-09-17 1993-04-01 Schuster Wilhelm Jr Dispositif d'entrainement pour l'actionnement de dossiers a positions reglables multiples
DE4422529A1 (de) * 1993-11-12 1995-05-24 Brose Fahrzeugteile Manuelle, passive Schnellverstellung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1088827B (de) * 1956-01-30 1960-09-08 Stuttgarter Karosseriewerk Reu Vorrichtung zum Verstellen der Rueckenlehne von Sitzen, insbesondere fuer Kraftfahrzeuge
FR1282176A (fr) * 1960-12-09 1962-01-19 Faure Bertrand Ets Perfectionnements apportés aux dispositifs d'articulation pour sièges, notamment pour sièges d'automobiles
DE2449180A1 (de) * 1973-11-09 1975-05-15 Sessa T Selbsthemmungsvorrichtung fuer rotierende wellen
DE2822135A1 (de) * 1978-05-20 1979-11-22 Selzer & Co Kg Vorrichtung zur winkelverstellung der rueckenlehne eines sitzes, insbesondere kraftfahrzeugsitzes
DE2931873A1 (de) * 1979-08-06 1981-02-26 Keiper Automobiltechnik Gmbh Gelenkbeschlag mit verstellbarer rueckenlehne, insbesondere fuer kraftfahrzeugsitze
US4589301A (en) * 1983-04-27 1986-05-20 Hoover Universal, Inc. Linearly infinitely variable mechanism
FR2567462A1 (fr) * 1984-07-10 1986-01-17 Cousin Cie Ets A & M Freres Articulation a vis reversible, plus specialement pour reglage de sieges de vehicules terrestres, nautiques et aeriens
WO1993005982A1 (fr) * 1991-09-17 1993-04-01 Schuster Wilhelm Jr Dispositif d'entrainement pour l'actionnement de dossiers a positions reglables multiples
DE4422529A1 (de) * 1993-11-12 1995-05-24 Brose Fahrzeugteile Manuelle, passive Schnellverstellung

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