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
  • B60N2/433—Safety locks for back-rests, e.g. with locking bars activated by inertia
• • 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

Definitions

• the invention relates to a locking device for a vehicle seat, in particular for a motor vehicle seat, with the features of the preamble of claim 1.
• a known locking device of this type locks a fitting for adjusting the backrest angle.
• the catch piece is normally arranged at a distance from the locking element in the opening direction of the locking element, while it bears against the locking element in the radial direction.
• the catch takes the coupled eccentric after a certain swivel path.
• the catch piece supports the pawl, while the clamping eccentric can deflect.
• the clamping eccentric could react on the catch piece.
• the invention is based on the object of improving a locking device of the type mentioned. This object is achieved according to the invention by a locking device with the features of claim 1. Advantageous refinements are the subject of the dependent claims.
• a stop associated with the locking element to men elaborate • together with the clamping eccentric is provided in the event of a crash, an evasive movement of the clamping eccentric can be stopped in the event of a crash.
• a reaction to the catch piece which could occur at high peak loads, where if the catch piece could leave its desired position through a movement, can be excluded.
• the locking device according to the invention can thus also be used at very high, pulse-like loads, for example in a fitting designed as a backrest incline adjuster or in a locking device for connecting the vehicle structure to the vehicle seat.
• the coupling between the catch piece and the clamping eccentric via a slot-pin guide or similar path-delaying means has the advantage that installation space can be saved.
• the stop is preferably provided on a control cam, with which the clamping eccentric cooperates and which is connected to the locking element, since - depending on their function - components of different thicknesses can be arranged in different planes to save space.
• the stop is preferably formed on the control cam, so that it can be punched out of a sheet metal at the same time as it is cost-neutral.
• the catch piece In order to avoid any transmission of impulses to the catch piece before the locking element abuts the catch piece, the catch piece is normally in contact with a fixed stop, which is preferably attached, for example, to a component which is connected to the various bearings for the pivotable components of the locking device is attached to a fitting part.
• Fig. 2 is a view corresponding to FIG. 1 after a high pulse
• Fig. 3 is a schematic representation of a vehicle seat.
• a vehicle seat 1 of a motor vehicle is provided with a fitting 5 on both sides for adjusting the inclination of its backrest 3.
• the fitting 5 has a fitting lower part 7 which is fixed to the structure of the seat part and a fitting part 8 which is fixed to the backrest structure and which is pivotably mounted on a backrest bearing pin 9 relative to the lower fitting part 7.
• the lower fitting part 7 consists of two plate-shaped, parallel housing parts, which provide a space between them for accommodating a locking device 11 described in more detail below.
• a pawl 15 is pivotally mounted as a locking element.
• To lock the pawl 15 cooperates by means of a toothing with a ring gear 18 as a counter element which is integrally formed on the upper fitting part 8.
• a control cam 19 also mounted on the pawl bearing pin 13 is connected to the pawl 15 in a rotationally fixed manner. The control cam 19 controls the engagement of the pawl 15 in the ring gear 18 in cooperation with control elements of the upper fitting part 8.
• a clamping eccentric 21 is pivotally mounted on an eccentric bearing pin 23 and is loaded in the closing direction by a spring, not shown.
• the clamping eccentric 21, which is provided with an eccentrically curved clamping surface with respect to the eccentric bearing pin 23, acts on the control cam 19, which presses the pawl 15 into the ring gear 18.
• a catch piece 25 is pivotally mounted on the eccentric bearing pin 23 and is spring-loaded gene is firmly pressed with the lower fitting part 7 stop bolt 27 is pressed.
• the catch piece 25 In the described locked state of the locking device 11, the catch piece 25 is normally arranged at a short distance from the pawl 15 on its side facing away from the ring gear 18. This distance is less than the tooth height of the teeth of the pawl 15 and the ring gear 18. In the event of a crash, the catch piece 25 supports the pawl 15 loaded with an opening moment, so that the latter cannot open.
• the catch piece 25 is provided with an unlocking bolt 29 which on one side protrudes through a backdrop of the lower fitting part 7 and on the other side engages through a window 31 of the clamping eccentric.
• the clamping eccentric 21 and the catch piece 25 are coupled to one another via a slot-pin guide 33.

Landscapes

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

Priority Applications (5)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=30128610

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (17)

Citations (6)

Family Cites Families (4)

• 2002
  • 2002-08-01 DE DE10235141A patent/DE10235141B4/de not_active Expired - Lifetime
• 2003
  • 2003-07-18 JP JP2004525245A patent/JP4282075B2/ja not_active Expired - Lifetime
  • 2003-07-18 BR BRPI0305711-9B1A patent/BR0305711B1/pt not_active IP Right Cessation
  • 2003-07-18 DE DE50311283T patent/DE50311283D1/de not_active Expired - Lifetime
  • 2003-07-18 WO PCT/EP2003/007836 patent/WO2004012959A1/de not_active Ceased
  • 2003-07-18 EP EP03766220A patent/EP1525114B1/de not_active Expired - Lifetime
• 2004
  • 2004-07-14 US US10/890,951 patent/US6893093B2/en not_active Expired - Lifetime

Patent Citations (6)

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