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
  • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
  • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
  • B60N2/08—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable characterised by the locking device
  • B60N2/0806—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable characterised by the locking device with pin alignment systems, e.g. with at least one of a plurality of locking pins always aligned w.r.t. at least one of a plurality of pin-receiving elements

Definitions

• the invention relates to a locking device for an adjustable vehicle seat according to the preamble of claim 1.
• Such a locking device serves to lock a previously moved by means of a suitable setting adjustment position of two relatively movable seat elements of a vehicle seats, especially in a rail longitudinal guide for adjusting the seating position in the vehicle longitudinal direction.
• a rail of the rail longitudinal guide with the locking rail and the other rail of the rail longitudinal guide is connected to a locking device of the locking device.
• the Feststellvor- direction load is also used to lock other adjusting devices with two relatively movable, in particular to each other adjustable assemblies.
• DE 102 42 825 A 1 discloses a locking device of a longitudinal adjustment device of a motor vehicle seat with a detent strip which has periodically arranged detent openings and detent webs, a floor rail assigned to the longitudinal adjustment device and a locking unit which likewise supports a seat rail of the longitudinal Ver. Adjusting device is assigned.
• the locking unit has locking lugs which are adjustable independently of one another and can be disengaged jointly and which are arranged in a guide part which has a pin bore for each locking pin.
• the locking pins In order to prevent the locking pins from being pushed out of their locking position when the load is due to an accident, the locking pins have a tapered groove area located near a lower end of the associated pin bore and designated crashing groove or corrugation with one or more individual grooves arranged parallel to one another. These individual grooves counteract a pushing-up of the locking pins out of the blocking position, in which they provide interlocking and latching possibilities, as soon as the locking pins are bent due to an accident to the Crashrillen or corrugations serving as nominal deformation points.
• Such a tilting or hooking of the locking or locking pins is due in particular to the baffles or surface roughness on the guided in the guide means section of the shaft of the locking or locking pins or on the inner surface of the guide holes or guide channels in the used for locking devices of this type ,
• Object of the present invention is therefore to provide a locking device of the type mentioned, in which both a tilting or Verhakein the locking gelungslungsroy as well as an unintentional disengagement of the locking pins from the locking rail is avoided in particular in the event of a crash.
• the guide section of the guide device is preferably arranged adjacent to the latching rail and has guide bores or guide channels through which the section of the shaft of the locking pins provided with the threaded structure is guided.
• the section of the shaft of the locking pins provided with the threaded structure By assigning the section of the shaft of the locking pins provided with the threaded structure to a guide section of the guide device adjacent to the locking rail, the greatest possible effect in avoiding tilting or snagging of the locking pins is achieved, particularly in the case of multi-part guide sections of the guide device, and the self-locking effect of the guide section in this guide section used optimally when engaging the locking pins in the locking rail remaining circumferential thread structure.
• the locking pins have a conical or frustoconical section on their ends facing the latching rail, on which the locking pins can slide into a latching opening, then the section of the shaft provided with the threaded structure preferably directly adjoins the conical or frusto-conical section.
• the advantages associated with an application of the solution according to the invention can also be used with such locking pins which, in order to achieve a reliable compensation of the tolerances occurring in the locking device with little effort and small space requirement at their ends of the conical or frusto-conical portion of the locking rail Shaft additionally have an insertion bevel on which the locking pins can slide in a detent opening, so that always support two locking pins in the opposite direction to a locking bar.
• the threaded structure between the conical or truncated portion of the shaft of the locking pins and a support of the locking pins for a biasing spring is formed so that the entire guided during engagement and disengagement of the locking pins within the guide means section of the shaft of the locking pins with the thread structure is provided.
• the locking pins are guided with minimal play in the guide holes or guide channels of adjacent to the locking rail guide portion of the guide means and formed the thread structure of a circumferential fine thread.
• the thread structure of the shank of the locking pins can be provided with additional grooves, which extend in the longitudinal direction of the shank parallel or diagonally to the shank axis and which are also provided in sections.
• the locking device shown in the drawing has a locking unit 1, for example, associated with the upper rail of a seat longitudinal adjustment and fixedly connected to this, and a locking rail 2, which is associated with the lower rail of the seat longitudinal adjustment and firmly connected thereto.
• the locking rail 2 includes a plurality of periodically arranged latching openings 21 which are separated by latching webs 22.
• the above the locking rail 2 arranged locking unit 1 comprises a plurality, in the present embodiment four, locking pins 5, 6, 7, 8, in a are arranged at a constant distance from each other, wherein the distance between the center axes of adjacent locking pins 5, 6, 7, 8 is smaller than the period of the latching opening 21 and latching webs 22 of the locking rail 2.
• the locking pins 5 to 8 have a cylindrical shaft 50 which at its upper end is completed by a collar 52 and merges at its lower end in a conical or frusto-conical portion 51.
• the shafts 50 of the locking pins 5, 6, 7, 8 are movably guided in an upper guide 3 and a lower guide 4 of a guide device in the locking direction R of the locking pins 5, 6, 7, 8, wherein as a guide means in the lower guide 4 one of Number of locking pins 5, 6, 7, 8 corresponding number of guide holes or guide channels 41, 42, 43, 44 is provided, in which the shafts 50 of the locking pins 5, 6, 7, 8 are guided accurately.
• Entriegelungsschiene 9 is arranged, which pulls in a locking position against the locking direction R located in a locking position locking pins 5 to 8 from the lock with the locking rail 2, so the relatively adjustable parts of the vehicle seat are released for an adjustment process.
• the unlocking rail 9 engages on all the locking pins 5 to 8 together, but only moves the located in a locking position locking pins 5 to 8 in the release position.
• the locking pin 8 In the locking state shown in the drawing, the locking pin 8 is in a detent opening 21, while the locking pin 7 with an edge of its conical or frusto-conical portion 51 of the shaft 50 or an adjoining insertion bevel on the inside of a detent web 22 of Locking rail 2 is supported.
• the locking pins are 5 and 6 with the end face of its conical or frusto-conical portion 51 due to the spring bias on the top of two adjacent locking webs 22 at.
• the schematic representation of the drawing figure would still be a slight movement of the locking device in the adjustment or latching direction E present, but can be avoided by applied to different sides of the notches 22 of the locking rail 2 conical or frusto-conical portions 51 of the locking pins 5 to 8.
• Examples of an adjustment or locking direction E play-free engagement of the locking pins 5 to 8 in the locking rail 2 are shown in DE 299 10 720 U1.
• the angle of inclination of the conical or ke-frustum-shaped portions 51 of the locking pins 5 to 8 is selected so that the locking pins 5 to 8 are not pushed out of their associated latching openings 21 by crash-related, acting along the direction of adjustment E very large forces can, if the respective locking pin 5 to 8 is not with its shaft 50 within the detent opening 21, but rests with flank of the conical duri- fenden or frusto-conical portion 51 on a detent web 22 of the locking rail 2.
• unlocking rail 9 If the unlocking rail 9 is moved counter to the setting direction R for unlocking the locking device, it initially bears against the collar 52 of the locking pin 8 and moves it counter to the latching direction R and against the biasing force of the compression spring 13 from its engagement in the latching rail 2 out until the unlocking rail 9 rests against the underside of the collar 52 of the locking pin 7 and also pulls it out of the locking position.
• This threaded structure 53 not only prevents snagging or tilting of the locking pins 5 to 8 in the guide bores or guide channels 41 to 44 of the lower guide 4, but also in particular in the event of a crash also causes a self-locking of the locking pins 5 to 8, if a locking pin 5 to 8 is engaged in a latching opening 21 of the locking rail 2 or with a Flank of its conical or frusto-conical portion 51 rests against a latching web 22 of the locking rail 2.
• the threaded structures 53 can be formed, for example, as a fine thread, which allows a high accuracy of fit of the locking pins 5, 6, 7, 8 in the lower guide 4 of the guide device.
• the threaded structures 53 of the locking pins 5, 6, 7, 8 can be provided with additional grooves, which are provided in the longitudinal direction of their shafts parallel or diagonally to the shaft axis and also provided in sections.

Landscapes

• Engineering & Computer Science (AREA)
• Aviation & Aerospace Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Seats For Vehicles (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (2)

Family

ID=36746328

Family Applications (1)

Country Status (5)

Cited By (3)

Families Citing this family (16)

Citations (2)

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• 2005
  • 2005-03-02 DE DE202005003626U patent/DE202005003626U1/de not_active Expired - Lifetime
• 2006
  • 2006-02-22 DE DE502006007165T patent/DE502006007165D1/de active Active
  • 2006-02-22 US US11/885,480 patent/US20080315662A1/en not_active Abandoned
  • 2006-02-22 JP JP2007557320A patent/JP2008531380A/ja active Pending
  • 2006-02-22 WO PCT/DE2006/000339 patent/WO2006092118A2/de not_active Ceased
  • 2006-02-22 EP EP06706008A patent/EP1855913B1/de not_active Ceased

Patent Citations (2)

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