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
  • B60N2/80—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

• Headrest in particular for a motor vehicle
• the invention relates to a headrest, in particular for a motor vehicle, wherein at least one of the head of the seat occupant facing portion of the headrest accidentally under the action of a drive device relative to a base part of the headrest from a position of use to the head of the seat occupant towards a safety position displaced and by means of a restoring device is reset again in the direction of its position of use.
• a generic headrest is disclosed in the German patent application DE 102 15 137 A1. It consists of a base part connected to the backrest by means of handrails and a padded section which can be displaced towards the front (-X direction of the vehicle) towards the head of the seat occupant.
• the displacement of the section is due to accident after releasing a locking device under the action of a drive device consisting of a telescopic guide surrounding a compression spring.
• a drive device consisting of a telescopic guide surrounding a compression spring.
• a headrest is described with a base part and a displaceable in a safety position section, in which the drive means comprises a rotatable member having a parallel to the direction of displacement of the section axis of rotation, which with opposite the direction of displacement inclined active surfaces for generating the displacement force is equipped in its rotation in a first direction of rotation.
• the drive means comprises a rotatable member having a parallel to the direction of displacement of the section axis of rotation, which with opposite the direction of displacement inclined active surfaces for generating the displacement force is equipped in its rotation in a first direction of rotation.
• the invention has for its object to provide a working with simple means, readily available and integrated reset device. solution
• the object is achieved in a generic headrest characterized in that by the restoring device in their direction of action of the displacement direction of the portion deviating force is exerted on the drive means.
• Fig. 1 shows a motor vehicle seat with an inventive
• FIG. 2a is a perspective view of the disposed in the headrest of Figure 1 drive means in the position of use
• FIG. 2b shows the drive device according to FIG. 2a in the safety position of the headrest, FIG.
• Fig. 3 is a rear view of another invention
• Fig. 4 shows the operating principle of the usable in the headrest 3
• the illustrated in Fig. 1 motor vehicle seat 1 consists of a seat part 2 and a backrest 3, which is provided with a height adjustable by means of support rods 4 on the backrest 3 headrest 5.
• the headrest 5 has a connected to the support rods 4 base 6 and a padded, in an accident by means of a drive means 7 from a use position in the direction of the head of a seat occupant in a safety position (dashed line) displaceable section 8.
• the drive device 7 shown in Fig. 2 consists of a first, rigidly connected to the base member 6 and a component 9 fixedly disposed on the portion 8 second component 10 which is slidably mounted on the first component 9 by means of a sliding guide 15 in the direction of arrow A.
• a further component 11 is rotatably mounted, which by means of the sliding direction A inclined, backdrop-like running surfaces 12, 12 'on the components 9 and 10 is supported.
• the active surfaces 12, 12 'thus exert a forward or backward pushing force on the components 9, 10 in both directions of rotation of the component 11.
• the drive device 7 is equipped with a return device 16, which consists of a releasably arranged on a receptacle 17 by screw handle 18 and a Bowden cable 19, the core 20 tangentially impinges on the outer circumference of the rotatable member 11 and connected to this.
• the core 20 Upon rotation of the component 11, the core 20 is pulled out of the casing 21 of the Bowden cable 19 and displaces the handle 18 (or its attachment point to the receptacle 17) transversely to the displacement of the component 10 (arrow C in Fig. 2b).
• the bolt-like, small-sized handle 18 is not inserted into the receptacle.
• the handle 18 is screwed into the receptacle 17 and applied with a lateral displacement force (arrow D), which is transmitted through the Bowden cable 19 to the rotatable member 11 and this back to the initial position of FIG. 2a until the locking device engages again.
• a lateral displacement force (arrow D)
• the component 10 and thus the padded section 8 are rearranged in their use positions.
• the headrest base forming member 9 is provided on its rear side 22 with a pivot lever 23 which is independent of the component 11 about the same axis of rotation 13 rotatable.
• the arms 24 of the pivoting lever 23 extend dimetrically away from the axis of rotation 13 and are each equipped with a bolt 25 which projects into the drive device 7 and is in operative connection with the rotating component 11.
• the rotational position of the pivot lever 23 is preset by way of a tensioned spring 26 in the direction of an end position (FIG. 4 a) such that the rotatable component 11 does not transmit its rotation to the pivot lever 23 in the event of an accidental release of the headrest 5, but only upon reaching the Safety position of the headrest 5 with the bolt 25 comes into contact (Fig.

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=37896686

Family Applications (1)

Country Status (5)

Families Citing this family (17)

Family Cites Families (17)

• 2006
  • 2006-01-06 DE DE102006001143A patent/DE102006001143B3/de not_active Expired - Fee Related
  • 2006-12-21 US US12/097,536 patent/US20100244510A1/en not_active Abandoned
  • 2006-12-21 EP EP06841085A patent/EP1973761A2/de not_active Withdrawn
  • 2006-12-21 WO PCT/EP2006/012363 patent/WO2007076948A2/de active Application Filing
  • 2006-12-21 JP JP2008548944A patent/JP2009522162A/ja active Pending

Non-Patent Citations (1)

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