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
  • B60N2/22—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
• • 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

Definitions

• the invention relates to a locking device having the features of the preamble of claim 1.
• the securing elements are pivoted away from the first locking element and kept open to transition to the unlocked state.
• the existing by superpositions of spring preload closing moment on the fuse elements a correspondingly large counter-torque is applied.
• the invention is based on the object to further improve a locking device of the type mentioned. This object is achieved by a locking device with the features of claim 1. Advantageous embodiments are the subject of the dependent claims.
• the line of action of the force as a function of the angular position of the securing element approaches the center, the moment exerted by the spring on the securing element torque, so that this is overcome with a reduced operating torque.
• the line of action of the force in at least one angular position of the acted upon by the spring securing element passes through the center, so that then the spring in this angular position exerts no moment on the securing element.
• the interaction between the spring and securing element are set so that the open-held fuse element occupies exactly this angular position, ie the total, defined by a superposition of the various biases, to be applied to hold open counter-torque is minimal.
• FIG. 2 is a schematic side view of a vehicle seat
• FIG. 3 is a partial view of the embodiment in a first intermediate position
• Fig. 4 is a partial view of the exemplary embodiment in a second intermediate position
• Fig. 5 is a view of the embodiment in the unlocked state.
• a locking device 1 of a vehicle seat 3 of a motor vehicle is intended to releasably lock a first component 5 to a second component 8, namely crash-proof.
• the two components 5 and 8 for example, fitting parts of a detent fitting, as disclosed for example in EP 1 187 738 Bl, or a transmission fitting with free-pivoting function, as disclosed for example in EP 1 334867 Bl.
• the first component 5 may also be a lock, as disclosed, for example, in EP 1 373011 B1
• the second component 8 may be the associated counter element, such a lock serving, for example, for locking the backrest or the feet of the vehicle seat to the vehicle structure.
• the relevant disclosures are explicitly included.
• the locking device 1 comprises a first locking element 11, which is movably, preferably pivotally, mounted on the first component 5, and a second locking element 12 which is provided on the second component 8, in particular integrally formed or attached, or forms the second component 8.
• the two components 5 and 8 are locked together, ie the locking device 1 is in a locked state when the two locking elements 11 and 12 cooperate.
• the first locking element 11 is a pawl which is pivotally mounted on a first bearing pin 13 which is fixedly connected to the first component 5, and which carries a toothing, while the second locking element 12 integrally formed on the second component 8 counter-toothing is.
• the first locking element 11 On the side facing away from the second locking element 12, the first locking element 11 has a contact surface IIa.
• the locking device 1 further comprises a first securing element 15 and a second securing element 17. Both securing elements 15 and 17 are pivotally mounted on a first bearing pin 13 parallel second bearing pin 19 of the first component 5, in particular on the same second bearing pin 19. The center of the second Bearing pin 19 is denoted by Z.
• the second bearing pin 19 may be formed as a shaft, one of the two fuse elements 15 or 17 rotatably seated. Both securing elements 15 and 17 are biased toward the first locking element 11, the latter being with its contact surface IIa in the pivoting range of the securing elements 15 and 17 when it cooperates with the second locking element 12, in particular engaged or at least anschnäbelt.
• the first securing element 15 serves as a tensioning element and is prestressed by a tension spring 21, which is designed here as a tension spring.
• the thus spring-loaded first securing element 15 secures the locked state of the locking device 1 in the normal case by the first securing element 15, the first locking element 11 is applied to the contact surface IIa and biases against the second locking element 12.
• the first securing element 15, designed as an eccentric in this case lies at an angle outside the self-locking element. reichs clearance on the contact surface IIa. Act between the components 5 and 8 very high forces, for example in the event of a crash, the first locking member 11 exerts an opening moment of the first fuse element 15, so that it is pivoted back against its bias. The first locking element 11 can thereby move in its opening direction.
• the second securing element 17 serves as a catching element, which normally in a low, i. opposite to the tooth heights of the locking elements 11 and 12 small, spaced, in the present case abuts a stop 23.
• the second securing element 17 supports the first locking element 11, which pivots in its opening direction, after a short pivoting movement, abutting the contact surface IIa or another surface of the first locking element 11 at an angle within the self-locking region, in particular without exerting an opening moment .
• the second securing element 17 can be curved in the supporting region, for example concentrically around the second bearing pin 19, or run tangentially thereto.
• the second securing element 17 is biased by a spring 25.
• the spring 25 is presently designed as a flat spiral spring.
• one of the two securing elements 15 or 17 is first pivoted away from the first locking element 11, ie, opened, by means of the bearing pin 19 formed as a shaft or a cable attached to the securing element 15 or 17 kept open.
• the two fuse elements 15 and 17 are coupled with each other wegverzögert entrainment, for example by a slot-pin guide, so that after a defined free travel, the initially immobile, other of the two fuse elements 15 and 17 is taken.
• the first locking element 11 is thereby released, wherein preferably the opening second securing element 17 raises the first locking element 11, for example by means of a finger or the like.
• the first locking element 11 moves away from the second locking element 12.
• the locking device 1 is unlocked.
• the two components 5 and 8 can now be moved relative to each other.
• the bias voltages ensure that the first locking element 11 is again urged by the first securing element 15 and brought into engagement with the second locking element 12.
• the moment that is necessary for keeping open the prestressed securing elements 15 and 17 is determined by the characteristics of the pretensions of the securing elements 15 and 17, in the present case the tension spring 21 and the spring 25.
• the spring 25 acts with a control contour 17 a of the second securing element 17 together, wherein in the present case a spring arm 25a at the radially outer end of the spring 25 in a location P variable on the control contour 17a is applied and can slide along it.
• the tension spring 21 acts with relatively small force and a relatively large active lever arm to the center Z on the first securing element 15.
• the spring 25 holds with small force and large effective distance to the center Z, the second securing element 17th
• This zero point is reached at a certain angular position of the second securing element 17, in this case at the end of the opening process.
• the spring 25 then exerts no moment on the second securing element 17. Rather, the force K goes directly through the center Z. It is then only a pure bearing force on the second securing element 17 at. The entire counter-moment, which is necessary to keep open both fuse elements 15 and 17, thereby achieved a minimum.
• the torque characteristic i. the characteristic of the moment, which is exerted on the second securing element 17 by the force of the spring 25 about the second bearing pin 19, are influenced in such a way that the force for unlocking the locking device 1 corresponds to an operating force curve which is pleasant to the user.
• the actuation force curve can initially be slightly increased, then decrease and finally increase moderately.
• the tension spring 21 pulls the first securing element 15 in the closing direction.
• the first securing element 15 takes over the slot-pin guide the second securing element 17 with.
• the second securing element 17 approaches the stop 23, it is moved into its blocking position due to its control curve 17a and the spring 25, that is brought into contact with the stop 23.
• the first securing element 15 presses the first locking element 11 into its locking position and provides the system with clearance.

Landscapes

• Engineering & Computer Science (AREA)
• Aviation & Aerospace Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Seats For Vehicles (AREA)
• Lock And Its Accessories (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39370917

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (11)

Citations (5)

Family Cites Families (7)

• 2007
  • 2007-02-06 DE DE102007006603A patent/DE102007006603A1/de not_active Ceased
• 2008
  • 2008-01-23 EP EP08707200.5A patent/EP2057033B1/de not_active Not-in-force
  • 2008-01-23 KR KR1020097005913A patent/KR101312612B1/ko not_active Expired - Fee Related
  • 2008-01-23 US US12/446,634 patent/US8186759B2/en not_active Expired - Fee Related
  • 2008-01-23 WO PCT/EP2008/000477 patent/WO2008095602A1/de not_active Ceased
  • 2008-01-23 CN CN2008800043334A patent/CN101605671B/zh not_active Expired - Fee Related
  • 2008-01-23 JP JP2009547577A patent/JP5154577B2/ja not_active Expired - Fee Related
  • 2008-01-23 BR BRPI0806289-7A patent/BRPI0806289A2/pt not_active IP Right Cessation

Patent Citations (6)

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