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
  • B60N2/20—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 tiltable, e.g. to permit easy access
  • B60N2/206—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 tiltable, e.g. to permit easy access to a position in which it can be used as a support for objects, e.g. as a tray
• • 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
  • B60N2/235—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 gear-pawl type mechanisms
  • B60N2/2352—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 gear-pawl type mechanisms with external pawls
• • 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
  • B60N2/225—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 cycloidal or planetary mechanisms
  • B60N2/2252—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 cycloidal or planetary mechanisms in which the central axis of the gearing lies inside the periphery of an orbital gear, e.g. one gear without sun gear
• • 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
  • B60N2/235—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 gear-pawl type mechanisms
  • B60N2/2356—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 gear-pawl type mechanisms with internal pawls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N2205/00—General mechanical or structural details
  • B60N2205/20—Measures for elimination or compensation of play or backlash

Definitions

• the invention relates to a fitting for a vehicle seat, in particular for a motor vehicle seat, having the features of the preamble of claim 1.
• a fitting of this type for a vehicle seat of a two-door motor vehicle which serves to allow by the forward free pivoting of the backrest access to the rear and a plurality of different inclined positions of use of the backrest for the use of the vehicle seat to be provided by an inmate.
• the third fitting part and the locking element are locked by means of a third fitting part pivotally mounted pawl which rests in the backward pivoting direction with its bearing pin on a radially projecting stop and is biased in the forward pivoting direction against a latching stop.
• the invention is based on the object to improve a fitting of the type mentioned. This object is achieved by a fitting with the features of claim 1.
• Advantageous embodiments are the subject of the dependent claims.
• stop stop cam By axially stop stop cam are provided as a stop, a radial projection of a stop element via an annular contour, in particular of the locking element, avoided. This reduces the risk of injury or damage to entering persons and stowing cargo, which could consist of a radially projecting stop and freely pivoted backrest. Equated to the free-pivoting is a transition to a table position.
• a simple Production of the stop cam results when they are issued from the material of the third fitting part and the locking element, for example in the form of tongues. It can be provided in each case a plurality of stop cam, which are distributed in pairs in the circumferential direction. Larger distances of the contact points in the locked state cause at a loaded backrest that the bearing force at most changes slightly with a change in direction of the load and thus a conditional by bearing noise is avoided.
• the bearing clearance can be eliminated by an elastic element.
• the locking of the third fitting part and locking element is preferably carried out by means of a movable pawl, which is preferably made free of play by a tensioning element in the normal case and is preferably supported in the event of a crash by a catching element.
• a tensioning element in the normal case and is preferably supported in the event of a crash by a catching element.
• a relatively dirt-free space is created in a simple manner within the fitting.
• unlocking the unlocking shaft preferably pivots away at least one of these two elements of the pawl.
• the other element is preferably coupled with a free travel on entrainment, so that it is ultimately also pivoted away from the pawl by the rotating Entriegelungswelle so that it unlocks.
• the invention can preferably be used in longitudinally adjustable vehicle seats of two-door motor vehicles with centric pivoting of the backrest, but can also be used for other vehicle seats.
• 2 is a schematic side view of a vehicle seat
• 3 is a view of the relevant for the free-pivoting assembly of the Aumetall- tion example
• FIG. 5 shows the rear side of the assembly shown in FIG. 3 under a load in the forward pivoting direction, wherein the supporting and bearing forces are represented by arrows,
• Fig. 6 shows the back of the assembly shown in Fig. 3 at a load in the backward pivoting direction, wherein the support and bearing forces are shown by arrows, and
• Fig. 7 is a partial view of FIG. 6 with optional elastic element.
• a vehicle seat 1 for a two-door motor vehicle has for the tilt adjustment and the free pivoting of its backrest 2 relative to its seat part 3 on its two sides depending on a fitting 5.
• a handwheel 7 is provided for the tilt adjustment function on one of the fittings 5, and a shaft connected to the handwheel 7 is provided between the two fittings 5, while a hand lever 8 is movably mounted on the backrest 2 for the free-pivoting function.
• Each fitting 5 comprises as a heart a first fitting part 9 and a second fitting part 11, which together form a disk-shaped unit in structural terms, as described for example in DE 101 05 282 B4, whose disclosure content is expressly incorporated.
• the two fitting parts 9 and 11 are in the embodiment by means of a - in this case self-locking - eccentric gear transmission with each other in gear, which in the present case allows a play-free fixing the fittings 9 and 11 and enforces a relative rotation of the fitting parts 9 and 11 with superimposed wobble for adjusting.
• a geared fitting is described, for example, in DE 4436 101 A1, the disclosure of which is hereby incorporated by reference. content is expressly included.
• there are also other gear fittings and - theoretically - locking fittings (as described for example in WO 00/44582 Al) can be used.
• the first fitting part 9 is connected to the structure of the seat part 3 ("fixed seat part") by a fixed seat fixed adapter 13 is attached to the first fitting part 9.
• Each fitting 5 further comprises a third fitting part 14 which is connected to the backrest structure of the backrest 2 ("leaning").
• the plate-shaped third fitting part 14 is mounted on the second fitting part 11 on the side facing away from the first fitting part 9 and pivotable for the centrically taking place Freischwenken relative to the second fitting part 11 about a central axis A, but otherwise locked to the second fitting part 11.
• the axis A and its location within the vehicle seat 1 define the directional information used herein.
• the free-pivoting which serves the easier access of the next row of seats, can also be a transition to a table position with approximately horizontal backrest 2, which improves the loading possibilities.
• the locking element 15 for example, a collar on which the third fitting part 14 with a bearing opening, which may also be formed in the manner of a collar, pivotally mounted is.
• the locking element 15 is connected directly or indirectly to the second fitting part 11, for example by means of a laser weld (or otherwise).
• An annular fixing plate 17, which engages over the third fitting part 14 in the storage area, is firmly connected to the axial securing of the latter with the locking element 15 and optionally with the second fitting part 11. In the radial direction there is a certain clearance, and in the axial direction, the third fitting part 14 and the locking element 15 are spaced apart by up to a material thickness.
• the third fitting part 14 is mounted on a collar or the like of the mounting plate 17 and the locking element 15 firmly connected to the latter serves for the axial securing.
• the third fitting part 18 at least one, in this case two diagonally relative to the axis A opposite first stop cam 18 and the locking element 15 in the same number and corresponding arrangement second stop cam 19.
• the pairs distributed in the circumferential direction stop cams 18 and 19 are arranged radially spaced from the axis A, formed by an axial, facing each other exhibition in the material in tongue form and facing with their at the free end of the tongues end faces abutment surfaces 18a and 19a in the circumferential direction facing each other.
• the stop cams 18 and 19 of the invention are only axially present, i. they are arranged radially inside the outer edge of the associated component.
• the stop cams 18 and 19 are issued so that they protrude with their stop surfaces 18a and 19a as far as possible in the space between the third fitting part 14 and locking element 15.
• the exhibitions have the effect of creating a depression in the material on the respective back.
• the abutment surfaces 18a and 19a extend in the axial and radial directions, i. without a component in the circumferential direction, so that they can transmit the forces optimally in the case of a system.
• the stop formed by the stop cams 18 and 19 limits the pivotal movement of the third fitting part 14 on one side to the rear, both in the normal case after the free swing and in the (rear) crash case.
• a pawl 20 is mounted by means of a bearing pin 24 pivotally mounted on the third fitting part 14 on the second fitting part 11 (and the locking element 15) facing side.
• a latching stop 25 is provided in the radial extension of the pawl 20 on the locking element 15, preferably formed.
• the bearing pin 24 is designed as an eccentric pin, that is, it is about a pivoting Axis of the pawl 20 offset axis in the third fitting part 14 relative to this rotatably mounted. To compensate for manufacturing tolerances of the bearing pin 24 is set and fixed so that the pawl 20 rests with a maximum latch engagement backlash on the second latching stop 25, but outside the angular range of the self-locking.
• an unlocking shaft 27 is rotatably mounted in the third fitting part 14 by means of a bearing bush 26, about a rotationally fixed catch element 29 and pivotally a clamping element 31 is seated.
• the catch element 29 and the tensioning element 31 are pivotable about the common axis defined by the unlocking shaft 27 and aligned with the pawl 20 when the third fitting part 14 is locked.
• the operation of catch element 29 and clamping element 31 is described in DE 4439644 Al, the disclosure content of which is expressly incorporated.
• the clamping element 31 rests with an eccentric to the unlocking shaft 27 curved clamping surface at an angle outside the self-locking region on a contact surface of the pawl 20 at.
• the clamping element 31 is biased by a first spring 36 designed as a spiral spring, so that it acts on the pawl 20 (and this clamps against the latching stopper 25).
• a first spring 36 designed as a spiral spring, so that it acts on the pawl 20 (and this clamps against the latching stopper 25).
• the catch element 29 is acted upon by a second spring 37 configured as a helical tension spring and bears against a stop of the third fitting part 14.
• the pawl 20 In the normal case, ie for normal seat use, the pawl 20 is held by the tensioning element 31 in its position, and the catching element 29 is arranged at a small distance from the pawl 20.
• the clamping element 31 can open because of the lack of self-locking. After a slight pivoting movement of the pawl 20, this comes into abutment against the catch element 29.
• the catch element 29 then supports the pawl 20, which bears against the catch element 29 within the self-locking region, preferably tangentially or concentrically and as extensively as possible. This prevents the pawl 20 from opening (further).
• the catch element 29 and the tensioning element 31 are coupled to each other by means of a slot-pin guide 32 with a free travel on entrainment.
• the clamping element 31 has a curved around the unlocking shaft 27 slot in which a pin of the catch element 29 engages.
• a mounted on the third fitting part 14 lid 38 covers the pawl 20 including bearing pin 24, the catch element 29, the clamping element 31 and the springs 36 and 37 from and protects them from contamination.
• the locking catch 53 can also pivot the backrest 2, i. limit the pivotal movement of the third fitting part 14 forward.
• an arm or lever is rotatably connected to the unlocking shaft 27, to which a standing with the hand lever 8 in operative connection cable is attached.
• the unlocking shaft 27 can also be actuated via an electric actuator, for example a servomotor or the like.
• the Entriegelungs wave 27 takes the catch element 29 to open it, i. it separates and / or removes it from the pawl 20.
• the catch element 29 takes by means of the slot-pin guide 32, the clamping element 31 to release the pawl 20.
• the pivoting catch element 29 comes into abutment against a - substantially radially projecting - Entriegelungsfinger the pawl 20 and pulls on this or supports them when opening. The pawl 20 is thus completely open.
• the distances between the contact point of the locking cam 25 on the pawl 20 and the stop cams 18 and 19 are significantly larger, so that the angle by which the bearing force changes when changing the loading direction is significantly smaller.
• an elastic element 60 for example a steel spring or a plastic element is preferably provided. This acting in the radial direction elastic member 60 is disposed in the bearing between the third fitting part 14 and locking element 15, that is preferably between the collar of the locking element 15 and the edge of the bearing opening of the third fitting part 14.
• the radial clearance is eliminated in this bearing.

Landscapes

• Engineering & Computer Science (AREA)
• Aviation & Aerospace Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Seats For Vehicles (AREA)
• Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40848285

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (25)

Citations (3)

Family Cites Families (14)

• 2008
  • 2008-06-16 DE DE102008029438.1A patent/DE102008029438B4/de not_active Expired - Fee Related
• 2009
  • 2009-04-28 US US12/811,123 patent/US8366198B2/en active Active
  • 2009-04-28 WO PCT/EP2009/003062 patent/WO2009152892A1/de not_active Ceased
  • 2009-04-28 PL PL09765472T patent/PL2288512T3/pl unknown
  • 2009-04-28 EP EP09765472.7A patent/EP2288512B1/de not_active Not-in-force
  • 2009-04-28 CN CN2009801233580A patent/CN102066153B/zh not_active Expired - Fee Related
  • 2009-04-28 JP JP2011512845A patent/JP5524955B2/ja not_active Expired - Fee Related
  • 2009-04-28 BR BRPI0905618A patent/BRPI0905618A2/pt not_active IP Right Cessation

Patent Citations (3)

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