EP0222134B1 - Sicherheitsvorrichtung für Motorhaube von Kraftfahrzeugen - Google Patents

Sicherheitsvorrichtung für Motorhaube von Kraftfahrzeugen Download PDF

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Publication number
EP0222134B1
EP0222134B1 EP19860113544 EP86113544A EP0222134B1 EP 0222134 B1 EP0222134 B1 EP 0222134B1 EP 19860113544 EP19860113544 EP 19860113544 EP 86113544 A EP86113544 A EP 86113544A EP 0222134 B1 EP0222134 B1 EP 0222134B1
Authority
EP
European Patent Office
Prior art keywords
hood
spring
hook
pushbutton
configuration
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.)
Expired
Application number
EP19860113544
Other languages
English (en)
French (fr)
Other versions
EP0222134A1 (de
Inventor
Sergio Portigliotti
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.)
Fiat Auto SpA
Original Assignee
Fiat Auto SpA
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 Fiat Auto SpA filed Critical Fiat Auto SpA
Publication of EP0222134A1 publication Critical patent/EP0222134A1/de
Application granted granted Critical
Publication of EP0222134B1 publication Critical patent/EP0222134B1/de
Expired 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
    • E05B83/00—Vehicle locks specially adapted for particular types of wing or vehicle
    • E05B83/16—Locks for luggage compartments, car boot lids or car bonnets
    • E05B83/24—Locks for luggage compartments, car boot lids or car bonnets for car bonnets
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/06—Other devices specially designed for securing wings, e.g. with suction cups in which the securing part if formed or carried by a spring and moves only by distortion of the spring, e.g. snaps

Definitions

  • This invention relates to a safety device forming part of a mechanism for locking a swinging hood, in particular a motor vehicle engine hood, against opening.
  • Said mechanisms are known to comprise release means which release a hook rigid with the hood to allow it to open, and a safety device the purpose of which is to prevent the hood opening after it has swung through a predetermined distance following its release.
  • the hood is able to undergo the further swinging movement required for it to move into its completely open state only after a predertmined force has been exerted on an operating pushbutton with which the said safety device is provided.
  • These safety devices normally comprise a flat spring arranged to engage the hook provided on the hood after this latter has undergone the initial said swinging movement, which takes place following release of the hood.
  • This flat spring has a first end fixed to a plate rigid with the vehicle body and its second end provided with the said operating pushbutton.
  • the spring is flexurally deformable, by pressing the pushbutton, from a first deformed configuration in which the spring is hooked by the hook on termination of the initial predetermined swinging movement of the hood so as to form a safety means to prevent the hood opening, to a second deformed configuration in which the spring is released from the hook to allow complete opening of the hood.
  • Ade- vice of this type is desuibed in DE-A 3 148 972.
  • Safety devices of the indicated type which form part of the hood locking mechanism, have the drawback that when said spring is engaged by the hook to prevent opening of the hood, the operating pushbutton fixed to the end of the spring is not visible from the outside of the motor vehicle, as it is covered by the hood and is accessible only through the narrow space which is left free between his latter and the vehicle body. Consequently, in order to gain access to the safety device and operate the operating pushbutton of the device, several blind attempts have to be made the locate said pushbutton. This operation is uncomfortable, in particular when carried out by a person with imperfect knowledge of the vehicle, and who therefore does not immediately remember the precise position to insert the hand under the hood in order to operate said operating pushbutton.
  • the object of the present invention is to provide a safety device of the initially stated type, in which the described drawback is obviated.
  • a safety device forming part of a mechanism for locking a swinging hood against opening, said mechanism comprising release means arranged to release a hook rigid with the hood to allow it to open, and said safety device comprising a flat spring arranged to engage said hook to prevent the hood opening after it has undergone a predetermined swinging movement following its release, said flat spring having a first end fixed to a plate rigid with the vehicle body and a second end provided with an operating pushbutton and being flexurally deformable, by pressing said pushbutton, from a first deformed configuration, in which the spring is engaged by said hook on termination of said predetermined swinging movement of said hood in order to form a safety means for preventing the hood opening, to a second deformed configuration in which said spring is released from said hook to allow complete opening of the hood, characterized in that said hook is provided with an active edge arranged to cooperate with said spring and having a profile comprising a first substantially flat portion orthogonal to the plane of said hood, and a second
  • the safety device according to the invention forms part of a mechanism for locking a swinging hood 2 against opening.
  • the purpose of this mechanism is to keep a motor vehicle hood locked, and in particular the hood which closes an automobile engine compartment.
  • the hood 2 moves by substantially swinging about an axis, not shown, so as to be able to pass from a completely open configuration to a completely closed configuration, in which the front edge 3 or another equivalent part of the hood rests on a suitable seat 4 of the vehicle body.
  • the release mechanism comprises substantially release means which are arranged to release a hook fixed to the lower surface of the hood, for example by means of a plate 6, and a further plate 7 fixed in a substantially horizontal position on the vehicle body, and which is provided with a slot 8 into which the hook 5 is inserted when the hood 2 is in its closed configuration, as can be clearly seen in Figure 3.
  • a suitable stop element not shown, for the hook 5 engages the hook in order to keep the hood locked in said configuration.
  • the manually operable release means also comprise elastic means able to raise the hood from its closed configuration when said means have been operated in order to open the hood.
  • the safety device comprises a flat spring 10 of any suitable shape, the end 11 of which is fixed to the plate 7, and to the other end of which there is fixed an operating pushbutton 12.
  • said spring comprises a pair of substantially orthogonal arms 13 and 14 and is arranged to flexurally deform in a horizontal plane which is substantially that of the plate 7.
  • suitable lugs 15 are provided for guiding the flat spring during its deformation.
  • the arm 13 of the flat spring 10 is disposed substantially at the centre of the slot 8 so as to cooperate with the active edge ( Figures 3 and 5) of the hook 5.
  • the flat spring 10 is arranged to form a safety means to prevent opening of the hood, in the manner described hereinafter, and is therefore flexurally deformable from a first configuration 16 shown in Figure 5 in which the spring is hooked by the hook.
  • This first configuration is obtained after the hood 2, following its release, has undergone a swinging movement of predetermined width.
  • the flat spring 10 can also be moved into a second deformed configuration, indicated by 17 in Figure 5, in which said spring is released from the hook 5 to allow complete opening of the hood.
  • the active edge of the hook 5, arranged to cooperate with the flat spring 10, has a profile such as to flexurally deform the spring into a third deformed configuration indicated by 18 in Figure 3, when the hood 2 is in its closed position.
  • This third configuration substantially corresponds to the second configuration 17, as can be clearly seen by ocmparing Figures 3 and 5. Consequently the active edge comprises a first substantially rectilinear portion 19, substantially orthogonal to the plane of the hood 2, a second flat portion 20 forming a predetermined angle with the preceding, and a third portion 21 substantially in the shape of a circumferential arc which defines the internal cavity of the hook. That end 22 of the hook 5 which faces the flat spring 10 lies substantially on the same straight line as the first flat portion 19, as can be clearly seen in Figure 3.
  • the position of the operating pushbutton 12 on the end of the arm 14 of the flat spring 10 is chosen in such a manner that when this spring is in the aforesaid second and third configurations 17 and 18, shown in Figures 5 and 3, the pushbutton is under the hood 2 and internal to the edge 3 which frontally bounds the hood, whereas when the spring is in the aforesaid first configuration 16 (shown in Figure 5), the pushbutton projects by a predetermined amount from the edge 3 of the hood, as can be clearly seen in Figure 4.
  • the operation of the described safety device is as follows.
  • the various parts of the device are in relative positions shown in Figures 2 and 3.
  • the hook 5 is completely inside the slot 8 and the edge 3 of the hood 2 rests on the corresponding seat 4 of the ve- hide body, and a locking element (not shown) for keeping the hood in its closed configuration is inserted into the third portion 21 of the hook 5.
  • the flat spring 10 is in its aforesaid third configuration 18 in contact with the first portion 19 of the hook edge.
  • the operating pushbutton 12 is located under the hood behind the front edge 3 of the hood.
  • the pushbutton 12 When the pushbutton 12 is outside the hood 2, it also acts as an indicator for indicating that the hood locking mechanism has been released and thus acts as a further safety means for the driver.

Landscapes

  • Lock And Its Accessories (AREA)
  • Superstructure Of Vehicle (AREA)

Claims (4)

1. Sicherheitssystem, das Teil eines Mechanismus zum Abschließen einer klappbaren Motorhaube (2) gegen das Öffnen ist, besagter Mechanismus besteht aus Öffnungsvorrichtungen, die so montiert sind, daß sie einen Haken (5) freigeben, der fest an der Motorhaube befestigt ist, um diese zu öffnen, und besagtes Sicherheitssystem besteht aus einer flachen Feder (10), die so montiert ist, daß sie an besagtem Haken einhakt, um zu verhindern, daß sich die Motorhaube weiter öffnet, nachdem sie nach ihrer Freigabe eine Schwingbewegung ausgeführt hat, besagte flache Feder besitzt ein ersteres Ende (11), das an eine, fest mit der Fahrzeugkarosserie verbundene Platte (7) montiert ist und ein zweites Ende (14), das mit einem Druckknopf (12) zur Bedienung versehen ist und biegeverformbar ist, durch Drücken des besagten Druckknopfes (12), von einer ersten verformten Struktur, in die die Feder durch den Haken eingehängt ist, am Ende der besagten vorbestimmten Schwingbewegung der besagten Motorhaube, um ein Sicherheitssystem zu bilden, das das Öffnen der Motorhaube verhindert, hin zu einer zweiten verformten Struktur, in der die besagte Feder durch besagten Haken freigegeben wird, um das vollständige Öffnen der Motorhaube zu erlauben, dadurch gekennzeichnet, daß besagter Haken mit einem aktiven Endstück (19, 20, 21) versehen ist, so montiert, daß es mit besagter Feder zusammenarbeitet und mit einem Profil versehen, das aus einem ersten grundsätzlich flachen Teil (19), rechtwinklig im Verhältnis zur Fläche der Motorhaube, besteht und einem zweiten flachen Teil (20), das einen vorbestimmten Winkel mit dem ersten Teil bildet, das Ende (22) des besagten Hakens gegenüber besagter Feder liegt grundsätzlich auf der Geraden zu der auch das erste flache Teil gehört, in der Art, daß besagte Feder in einer dritten verformten Struktur biegeverformt wird, wenn sich besagte Motorhaube in geschlossener Position befindet, besagte dritte verformte Struktur entspricht grundsätzlich besagter zweiter verformter Struktur, die Position des besagten Bedienungsdruckknopfes am Ende der besagten flachen Feder ist so gewählt, daß, wenn sich besagte Feder in besagter dritter und zweiter Position befindet, besagter Druckknopf unter der Motorhaube ist, während, wenn sich besagte Feder in besagter erster Struktur befindet, der Druckknopf in einer bestimmten Höhe zur Motorhaube hervorspringt, um die Position des Druckknopfes anzuzeigen.
2. System nach Anspruch 1, dadurch gekennzeichnet, daß das besagte Endstück (19, 20, 21) und besagter Haken (5) auf einer Platte (6) geformt sind, die an besagter Motorhaube befestigt ist.
3. System nach einem der vorhergegangenen Ansprüche, dadurch gekennzeichnet, daß besagte flache Feder (10) mindestens ein paar rechtwinklige Arme (13, 14) umfaßt, wovon ein ersterer Arm (14) mit einem Ende an besagtem Druckknopf (12) befestigt ist und ein zweiter Arm (13) so montiert ist, daß er mit besagtem aktiven Endstück (19, 20, 21) des besagten Hakens zusammenarbeitet.
4. System nach Anspruch 4, dadurch gekennzeichnet, daß besagte Platte (17) mit der Fahrzeugkarosserie verbunden ist und mit einem Schlitz (8) versehen ist, in den besagten Haken eingeführt wird.
EP19860113544 1985-10-11 1986-10-01 Sicherheitsvorrichtung für Motorhaube von Kraftfahrzeugen Expired EP0222134B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT5392985U IT206481Z2 (it) 1985-10-11 1985-10-11 Dispositivo di sicurezza facente parte di un meccanismo di bloccaggio dell apertura di un cofano di un autoveicolo
IT5392985U 1985-10-11

Publications (2)

Publication Number Publication Date
EP0222134A1 EP0222134A1 (de) 1987-05-20
EP0222134B1 true EP0222134B1 (de) 1989-09-20

Family

ID=11286025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860113544 Expired EP0222134B1 (de) 1985-10-11 1986-10-01 Sicherheitsvorrichtung für Motorhaube von Kraftfahrzeugen

Country Status (5)

Country Link
EP (1) EP0222134B1 (de)
BR (1) BR8604948A (de)
DE (1) DE3665748D1 (de)
ES (1) ES2010998B3 (de)
IT (1) IT206481Z2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129935C1 (en) * 1991-09-09 1993-04-15 Bayerische Motoren Werke Ag, 8000 Muenchen, De Car boot lid lock with swivel bolt on wall - which coacts with ramp face to provide locking force under spring action
GB2323406A (en) * 1997-03-18 1998-09-23 Rover Group Safety catch for vehicle bonnet
DE102004032296A1 (de) * 2004-07-03 2006-01-19 Adam Opel Ag Haubenanordnung mit Verriegelungs- und Entriegelungsmechanismus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1023405B (it) * 1973-12-24 1978-05-10 Daimler Benz Ag Dispositivo per assicurare cofani o coperchi a cerniera in partico lare il cofano del motore di autoveicoli
IT8053789V0 (it) * 1980-12-10 1980-12-10 Fiat Auto Spa Dispositivo di sicurezza per le serrature del cofano di autoveicoli

Also Published As

Publication number Publication date
EP0222134A1 (de) 1987-05-20
IT206481Z2 (it) 1987-08-10
ES2010998B3 (es) 1989-12-16
IT8553929V0 (it) 1985-10-11
DE3665748D1 (en) 1989-10-26
BR8604948A (pt) 1987-07-14

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