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
  • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
  • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
  • B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
  • B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
  • B60N2/4228—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the rear
• • 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
  • B60N2/80—Head-rests
  • B60N2/806—Head-rests movable or adjustable
  • B60N2/865—Head-rests movable or adjustable providing a fore-and-aft movement with respect to the occupant's head
• • 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
  • B60N2/80—Head-rests
  • B60N2/888—Head-rests with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest

Definitions

• Actuating device and seat in particular motor vehicle seat
• the invention relates to an actuation device for the headrest of a seat, in particular a vehicle seat, which is displaceable from a position of use under the action of acted upon by the mass of the seat occupant Aktu réelles promoted in a safety position, wherein the Aktu réelles featured an impact means for receiving the kinetic energy of the seat occupant, a driven means for the operative connection with the headrest and a torsionally rigid connecting means for the mechanical connection of impact and driven means, and a seat equipped therewith, in particular a vehicle seat.
• a generic actuation device for displacing a head restraint from a use position into a safety position counteracting an overstretching of the neck vertebrae closer to the head of the seat occupant is known from German Patent Application 10 2005 055 799.6, which is still unpublished.
• the Aktu ists shark consists of a flat, plate-shaped and rectangular impact means which rotatably in the region of its upper, horizontal edge with a transversely in the Backrest extending, torsionally rigid shaft is connected. In the initial position, the lower edge of the impact device protrudes forward, ie in the direction of the seat occupant, and is rotated by the mass of the seat occupant due to accident to the rear.
• the ends of the shaft are provided with gears which are guided in horizontally extending from front to back, slot-shaped scenes in the lateral metal structure of the backrest.
• the scenes are each equipped at their upper horizontal edges with a linear toothing, which mesh with the gears.
• the shaft is further provided with a pivoting lever which grips the core of a Bowden cable and is rotated downwards upon rotation of the impacting means.
• a train is exerted on the soul, which is transmitted to the drive means of the headrest.
• a spring acting on the pivot lever holds the shaft and thus the impact means in initial position.
• the invention has for its object to provide an actuator with low space and simple design. solution
• the object according to the invention in an actuation device of the type mentioned above achieved in that the connecting means is pivotable about a fixedly arranged in the backrest pivot axis.
• the axis of rotation, the impact means and the output means are arranged in all functional positions of the actuator, ie both in the initial position and in the deflected state, substantially in a common plane.
• the actuation device is particularly flat when the connection means is arranged in all functional positions of the actuation device in the region of the plane spanned by the rotation axis, the impact means and the output means.
• the connecting means is advantageously formed U-shaped, wherein impact means and driven means are each arranged on one of the upwardly extending, approximately equal legs and the axis of rotation in the region of the horizontally oriented base of the connecting means.
• the connecting means is tube-like and consists essentially of a U-shaped bent piece of pipe.
• Such a flat-built actuation device can be easily arranged between the lateral frame members of the backrest.
• the actuation device is eccentrically mounted in the backrest, wherein the impact means is located approximately in the region of the center vertical axis and the output means in the region of a lateral frame spar of the backrest.
• the output means is directly connected to a force acting on the headrest train or Druckionat- transmission means, in particular a Bowden cable connected. If the resulting tensile or compressive movement for actuating the headrest is insufficient and an extension of the output side leg of the connection means is eliminated for reasons of space, a translation device for increasing the tension or pressure movement can be arranged between the output means and the tension or pressure transmission means.
• the translation device may comprise, for example, a lever which is connected on the one hand to the output means and on the other hand to the tension or pressure transmission means and preferably L-shaped, wherein a longer leg of the bell crank is connected to the tension or pressure transmission means, a shorter leg of the bell crank is provided at the end with a backdrop into which the output means engages and the pivot axis of the reversing lever is disposed between the legs.
• FIG. 1 shows a motor vehicle seat according to the invention with an accidentally displaceable headrest
• FIG. 2 is a plan view of a backrest structure with an inventive Akutechniks stressed (Fig. 2a) and a longitudinal section through this backrest structure (Fig. 2b),
• Fig. 3 is a perspective view of an actuator according to
• FIG. 4 shows a three-dimensional illustration of another actuating device according to the invention in the initial position (FIG. 4a) and in the deflected state (FIG. 4b).
• the motor vehicle seat 1 shown in Fig. 1 consists of a seat part 2 and a backrest 3 with a headrest 4.
• the headrest 4 has a base 5 which is height adjustable by means of support rods 6 connected to the backrest 3.
• a cushion part 7 is arranged, which is displaced accidentally by means of a drive device 8 in the direction of the head of the seat occupant forward (cushion part T).
• the drive device 8 is actuated by an actuation device 9, which by means of a guided by at least one support rod Bowden cable 10 with the
• the actuation device 10 is arranged in the lower region (pelvic installation) of the backrest 3 and is actuated by the body of the seat occupant pressed into the upholstery of the backrest 3 during a rear impact, absorbs the energy thus obtained and transmits it through the Bowden cable 10 into the drive device 8
• the forward displacement of the cushion part 7 ' is the contact surface 11 of the headrest 4 moves closer to the head of the seat occupant (contact surface 11 ') and thereby prevents hyperextension of the neck vertebrae.
• the frame-like metal structure 12 of the backrest 3 shown in Fig. 2 consists of side frame members 13, 13 ', which are interconnected by a lower cross member 14 and an upper cross member 14'.
• the plate-shaped impact means 16 of the actuation device 9 is arranged and coupled by means of a torsionally rigid connection means 17 with the output means 18 of the actuation device 9.
• the connecting means 17 consists of a U-shaped bent pipe section 19 with a base 20 extending along the lower transverse spar 14 and two legs 21, 21 'projecting upwards parallel to the lateral frame rails 13, 13'.
• the base 20 is pivotally mounted by joints 22 on the lower cross member 14 about a horizontal, transverse to the seat direction extending axis of rotation 23 and is held by a spring, not shown, in its upright initial position.
• a pivoted backward position impact means 16 '
• the cover 26 is fixedly mounted on the side frame member 13. The soul 25 is thus accidentally pulled through the shell 26 and transmit this pulling movement to the drive means 8 of the headrest 4.
• the Bowden cable 10 could alternatively also be used as a pressure shift of the soul 25 are transmitted relative to the envelope 26 to the headrest 4 down.
• the actuation device according to the invention is constructed very flat and can even be mounted behind the transmission shaft 27 between the backrest tilt adjusters, not shown, which are arranged in the lower region of the left and right frame rails 13, 13 ' ,
• the actuation device 9 is assigned a transmission device 28, which has a deflection lever 29, which is fastened to the lateral frame member 13 so as to be rotatable about a pivot axis 30 which is offset upwards relative to the rotation axis 23.
• the L-shaped lever 29 has a longer horizontal, forward leg 31, which is connected to the connection point 24 for the connection of the
• Bowden cable 10 is equipped, as well as a shorter vertical, downwardly facing leg 31 ', which is provided at the end with a parallel to the leg 31' extending link 32.
• the pivot axis 30 is located in the transition region between the legs 31 and 31 '.
• the output means 18 has a pin 33 projecting parallel to the pivot axis 30, which protrudes into the slot 32 of the reversing lever 29 and mechanically couples the actuation device 9 to the reversing lever 29.
• connection point 24 is moved downward and exerts on the soul 25 of the Bowden cable 10 a train. Because of the different length of the legs 31 and 31 'of the reversing lever 29, the downward displacement of the connection point 24 is greater than the rearward displacement of the bolt 33, whereby a translation of the movements and thus a Magnification of the travel of the headrest 4 is achieved.

Landscapes

• Engineering & Computer Science (AREA)
• Aviation & Aerospace Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Seats For Vehicles (AREA)
• Chair Legs, Seat Parts, And Backrests (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=37945005

Family Applications (1)

Country Status (6)

Families Citing this family (5)

Family Cites Families (7)

• 2006
  • 2006-02-10 DE DE102006006518A patent/DE102006006518B3/de not_active Expired - Fee Related
• 2007
  • 2007-01-12 CN CNA2007800050992A patent/CN101384450A/zh active Pending
  • 2007-01-12 EP EP07702716A patent/EP1984207A1/de not_active Withdrawn
  • 2007-01-12 WO PCT/EP2007/000243 patent/WO2007090497A1/de active Application Filing
  • 2007-01-12 KR KR1020087019239A patent/KR20080093037A/ko not_active Application Discontinuation
  • 2007-01-12 JP JP2008553642A patent/JP2009525907A/ja active Pending

Non-Patent Citations (1)

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