EP1508660A2 - Schloss für die Motorhaube eines Fahrzeugs - Google Patents

Schloss für die Motorhaube eines Fahrzeugs Download PDF

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Publication number
EP1508660A2
EP1508660A2 EP04019904A EP04019904A EP1508660A2 EP 1508660 A2 EP1508660 A2 EP 1508660A2 EP 04019904 A EP04019904 A EP 04019904A EP 04019904 A EP04019904 A EP 04019904A EP 1508660 A2 EP1508660 A2 EP 1508660A2
Authority
EP
European Patent Office
Prior art keywords
fork
lock
itself
control lever
fact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04019904A
Other languages
English (en)
French (fr)
Other versions
EP1508660A3 (de
Inventor
Marco Bersano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GESSAROLI S.R.L.
Original Assignee
Oxford Automotive Italia - Divisione Gessaroli Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oxford Automotive Italia - Divisione Gessaroli Srl filed Critical Oxford Automotive Italia - Divisione Gessaroli Srl
Publication of EP1508660A2 publication Critical patent/EP1508660A2/de
Publication of EP1508660A3 publication Critical patent/EP1508660A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
    • E05B77/08—Arrangements for protection of pedestrians
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/0046—Ratchet mechanisms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
    • E05B77/04—Preventing unwanted lock actuation, e.g. unlatching, at the moment of collision

Definitions

  • the present invention refers to a lock for the bonnet of a vehicle.
  • locks for bonnets of vehicles comprise:
  • a lock for the bonnet of a vehicle comprising:
  • the number 1 indicates, in its entirety, a lock for a bonnet 2 of a vehicle (which is not illustrated).
  • the lock 1 comprises a boxed body 3 which is integral with the above-cited vehicle, a fork 4 and a control lever 5 which is supported by the body 3 in such a way that it can rotate around respective rotation axes F and L, and which are arranged co-planar to each other, with one abutting the other.
  • the lock 1 also comprises an elastic traction device 6 which is associated with the fork 4 and the control lever 5 in order to contrast the rotation of the fork 4 against the action of a striker 7 which is integral with the bonnet 2, and in order to maintain the control lever 5 in contact with the fork 4 itself.
  • the lock 1 comprises a passive collapse device 10 which is associated with the fork 4 and which is interposed between the control lever 5 and the fork 4 itself in order to permit a controlled supplementary rotation of the fork 4 in the case of any impact or crash of the above-cited vehicle.
  • the boxed body 3 comprises a base wall 11 which is transverse to the axes F and L, a major lateral wall 12 which is integral with and transverse to the wall 11, and two minor lateral walls 13, which are arranged facing and parallel to each other, and which are integral with and transverse to the walls 11 and 12.
  • the walls 13 and the wall 11 define a window 14, inside of which extends, partially and parallel to the wall 12, a bracket 15 which is provided with a free shaped end 16.
  • the body 3 also comprises, for each lateral wall 12, 13, a respective plate 17 which is provided with a central slot 18 for fixing the lock 1 to the above-cited vehicle.
  • the fork 4 is suitable for rotating around the axis F according to a closing rotation, in which the fork 4 itself rotates in a clockwise direction under the push of the striker 7 during the closure of the bonnet 2, and as far as a closed position, and according to an opening rotation, in which the fork 4 itself rotates in an anti-clockwise direction starting from the closing position in order to unblock the lock 1 and also permit the opening of the bonnet 2 itself.
  • the fork 4 comprises a contrast finger 19 which is suitable for entering into collision with the striker 7 in order to rotate the fork 4 itself towards a closed operating position of the lock 1, and a hook finger 20, which is substantially suitable for blocking the striker 7 in a closed operating position, and which forms with the finger 19 an oblong housing 21 for the striker 7.
  • the finger 19 and the finger 20 are both facing the outside of the body 6 across the window 14, and are both arranged transverse to a radial passing direction D for the axis F, and are connected to each other by a bridge 22 which substantially extends along the direction D.
  • the finger 19 is arranged nearer the axis F than the finger 20 along the direction D, and presents a substantially linear shape.
  • the finger 20 forms, together with the bridge 22, a blocking hook 23, which delimits part of the housing 21, and is suitable for blocking the striker 7 inside the housing 21 itself.
  • the fork 4 also comprises a detent 24, which is arranged along a peripheral edge 25 of the fork 4 itself opposite the axis F in relation to the finger 19, and which extends outside the edge 25 itself in a direction which is opposite that of the opening rotation.
  • the fork 4 comprises a shaped pin 26, which is arranged in such a way as to abut the hook 23 at the end of the hook 23 itself in the clockwise direction of rotation of the fork 4 itself, and which extends parallel to the axis F.
  • the control lever 5 is suitable for being selectively rotated around the axis L away from and towards the fork 4, and is arranged co-planar to and abutting the fork 4 in order to block the fork 4 itself in the closed position.
  • the lever 5 comprises an articulated end 28 on the body 4 in correspondence with the axis, a free end 29 which is integral with the device 6, and a catch 30, which is interposed between the two ends 28 and 29, and is maintained by the device 6 itself in contact with the fork 4 in order to also engage with the detent 24.
  • the catch 30 presents a substantially triangular shape and extends towards the fork 4 in such a way that it can hook onto the detent 24 of the fork 4 itself in such a way as to block the opening rotation.
  • the elastic device 6 comprises two springs 31 and 32, of which the spring 31 presents a rigidity K1 of a determined value, and is interposed between the fork 4 and the boxed body 3 in order to contrast the closing rotation of the fork 4 itself, while the spring 32 presents a rigidity K2 of a determined value, and is interposed between the lever 5 and the boxed body 3 in order to maintain the lever 5 itself in contact with the fork 4.
  • the spring 31 is constrained on one side to the pin 26, and on the other side to the wall 12, and is suitable for being placed in traction by the closing rotation of the fork 4, while the spring 32 is constrained on one side to the bracket 15, and on the other side to the free end 29 of the lever 5, and is suitable for being placed in traction by a distancing rotation of the fork 4.
  • the passive collapse device 10 is suitable for permitting a collapse stroke C of the striker 7, the stroke C of which develops parallel to the window 14 for a length which is of between 50 mm and 100 mm, and which starts from a blocking position, in which the striker 7 is arranged in the oblong housing 21 and the fork 4 is arranged in its own closed position.
  • the device 10 comprises a shaped cam 40 which is integral with the fork 4 and which is engaged in sliding fashion by the lever 5, and a guide extension 41 which is integral with the contrast finger 19 in order to guide the striker 7 during any impact or crash of the vehicle maintaining the fork 4 and the striker 7 themselves in contact with each other.
  • the shaped cam 40 is suitable for being engaged by the catch 30 when, following any impact or crash of the vehicle, the striker 7 is further pushed against the finger 19 determining a supplementary rotation in line with the closing rotation of the fork 4, and presents an outline 42 of determined run, which evolves around the axis F starting from the detent 24, and defines, together with the rigidity K1 of the spring 31, a resistance law of the controlled supplementary rotation of the fork 4.
  • the outline 42 is defined by an initial ramp 43 which is suitable for increasing in linear fashion the resistance to rotation of the fork 4 when the stroke C increases, and a number of depressions 44, which are arranged one after the other, and which are suitable for modulating according to a progress which is substantially sinusoidal in form the amount of resistance to rotation when the stroke C increases.
  • the guide extension 41 is an integral part of the finger 19, and is instrumental in determining its shape, which, therefore, is elongated and which has a length which is greater than a length of the finger 20 measured transverse to the direction D.
  • the extension 41 can end in a hook 45, which is arranged transverse to the finger 19 on the side of the oblong housing 21, and defines a stop of the stroke C of the striker 7.
  • the device 6 comprises a reset tooth 46, which is arranged along the edge 25 of the fork 4, at the end of the succession of depressions 44 in the direction of the closing rotation of the fork 4, and which defines an end-of-impact position of the lock 1, or rather a position in which the catch 30 is suitable for blocking again the opening rotation of the fork 4, and in which the lever 5 can again be disengaged from the fork 4 permitting the opening of the lock 1.
  • the striker 7 must be able to follow the stroke C to the extent necessary which corresponds to the above-mentioned European Union regulation, and such stroke C will be controlled by the device 10 by means of the reciprocal engagement of the catch 30 with the cam 40, and the elastic action of the spring 31.
  • the striker 7 will determine a further rotation, in a clockwise direction in FIGURE 3, of the fork 4 until the finger 41 is arranged parallel to the stroke C itself and taking the fork 4 to its end-of-impact position, which is indicated with the letter U.
  • the further rotation of the fork 4 from the position B to the position U is controlled according to the above-mentioned law of resistance, and ends when the striker 7 engages the hook 45 and with the catch 30 engaged in the tooth 46, from which it may again be disengaged in order to open the lock 1 by activating the lever 5.

Landscapes

  • Lock And Its Accessories (AREA)
EP04019904A 2003-08-22 2004-08-23 Schloss für die Motorhaube eines Fahrzeugs Withdrawn EP1508660A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20030647 ITTO20030647A1 (it) 2003-08-22 2003-08-22 Serratura per un cofano di un veicolo.
ITTO20030647 2003-08-22

Publications (2)

Publication Number Publication Date
EP1508660A2 true EP1508660A2 (de) 2005-02-23
EP1508660A3 EP1508660A3 (de) 2007-12-05

Family

ID=34044566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04019904A Withdrawn EP1508660A3 (de) 2003-08-22 2004-08-23 Schloss für die Motorhaube eines Fahrzeugs

Country Status (2)

Country Link
EP (1) EP1508660A3 (de)
IT (1) ITTO20030647A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2874956A1 (fr) * 2004-09-07 2006-03-10 Coutier Moulage Gen Ind Serrure verticale de capot de vehicule automobile.
FR2889230A1 (fr) * 2005-07-28 2007-02-02 Coutier Moulage Gen Ind Serrure a absorption de choc pour un capot de vehicule automobile
DE102008039731A1 (de) 2008-08-26 2010-03-04 Bayerische Motoren Werke Aktiengesellschaft Haubenverschlussvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695659A (en) * 1970-07-27 1972-10-03 Gen Motors Corp Hood latch assembly
DE19630246A1 (de) * 1996-07-26 1998-01-29 Bosch Gmbh Robert Kraftfahrzeug-Türschloß, -Haubenschloß o. dgl.
DE29804648U1 (de) * 1998-03-14 1998-05-14 Schloß- und Metallwarenfabrik Böddecker & Co. GmbH & Co. KG, 42327 Wuppertal Motorhaubenverschluß für ein Kraftfahrzeug
DE10204422A1 (de) * 2002-01-29 2003-08-07 Witte Velbert Gmbh & Co Kg Drehfallenverschluss

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695659A (en) * 1970-07-27 1972-10-03 Gen Motors Corp Hood latch assembly
DE19630246A1 (de) * 1996-07-26 1998-01-29 Bosch Gmbh Robert Kraftfahrzeug-Türschloß, -Haubenschloß o. dgl.
DE29804648U1 (de) * 1998-03-14 1998-05-14 Schloß- und Metallwarenfabrik Böddecker & Co. GmbH & Co. KG, 42327 Wuppertal Motorhaubenverschluß für ein Kraftfahrzeug
DE10204422A1 (de) * 2002-01-29 2003-08-07 Witte Velbert Gmbh & Co Kg Drehfallenverschluss

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2874956A1 (fr) * 2004-09-07 2006-03-10 Coutier Moulage Gen Ind Serrure verticale de capot de vehicule automobile.
FR2889230A1 (fr) * 2005-07-28 2007-02-02 Coutier Moulage Gen Ind Serrure a absorption de choc pour un capot de vehicule automobile
DE102008039731A1 (de) 2008-08-26 2010-03-04 Bayerische Motoren Werke Aktiengesellschaft Haubenverschlussvorrichtung

Also Published As

Publication number Publication date
EP1508660A3 (de) 2007-12-05
ITTO20030647A1 (it) 2005-02-23

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