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WO1999061729A1 - Verrou de porte de vehicule - Google Patents

Verrou de porte de vehicule Download PDF

Info

Publication number
WO1999061729A1
WO1999061729A1 PCT/GB1999/001595 GB9901595W WO9961729A1 WO 1999061729 A1 WO1999061729 A1 WO 1999061729A1 GB 9901595 W GB9901595 W GB 9901595W WO 9961729 A1 WO9961729 A1 WO 9961729A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
power
shaft
motor
door
Prior art date
Application number
PCT/GB1999/001595
Other languages
English (en)
Inventor
Sydney Edward Fisher
Original Assignee
Meritor Light Vehicle Systems (Uk) Ltd.
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 Meritor Light Vehicle Systems (Uk) Ltd. filed Critical Meritor Light Vehicle Systems (Uk) Ltd.
Publication of WO1999061729A1 publication Critical patent/WO1999061729A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
    • E05B81/25—Actuators mounted separately from the lock and controlling the lock functions through mechanical connections
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/20—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators for assisting final closing or for initiating opening

Definitions

  • This invention relates to latches for vehicle doors, particularly for light passenger and goods vehicles, and more specifically to actuators for powered closing of said doors by operation of their latches.
  • powered closure is used herein to mean powered operation of the door latch mechanism to draw the door to its fully shut and latched condition from the first safety position of the door at which the latch bolt, commonly a rotating claw, has first engaged a co-acting striker on moving the door towards its closed position.
  • the actuator of the latch mechanism operates the bolt, eg by rotating the claw, to force the door shut against its weather seals and for fully engaging the latch to secure it shut.
  • Powered closure is becoming desirable both for convenience of the user, in reducing the noise nuisance and wear and tear resulting from slam closing of vehicle doors, to ensure the door is properly closed in a fail-safe manner, and to permit development of more effective weather sealing and variations in door styling and fitting, as for reducing wind noise and resistance at speed, without the inhibitions on door design previously imposed by manual slam closing.
  • the object of the invention is to provide improvements in vehicle door latch mechanisms, in particular their power actuators for effecting power closure, in particular improvements in reliability, durability, operation and ease of manufacture and assembly.
  • a vehicle door latch power actuator for power closure as defined by claim 1 of the appended claims and preferably or conveniently having some one or more of the subsidiary or optional features defined by other of those claims.
  • Fig.l is an exploded perspective view of parts of a vehicle latch power actuator for effecting power closure
  • Figs.2a and b are views showing an output lever of the mechanism in start and finish positions and
  • Fig.3 is a graph of power output of the actuator.
  • a latch bolt in the form of a conventional rotating latch claw has to be turned by angular movement of a power input lever carrying a latching pawl which self-engages with the claw, the input lever being driven by connection of an arm thereof to a power actuator by means of a pull cable 10.
  • the power actuator 4 operating this cable is constructed as a single unit having a housing 12, eg a plastics moulding, locating and enclosing the actuator mechanism and its related electrical components.
  • An electrical drive motor 14 has a worm 16 on its output shaft meshing with a toothed sector 18 secured on a transverse output shaft 20 journalled in housing 12.
  • Shaft 20 is located by a gear box cover plate 22 of the housing, one end of the shaft projecting therethrough and the gearing being contained within a sealed compartment defined by the left-hand part of housing 12 as viewed in Fig.l. Said end of shaft 20 mounts an output crank 24 to which cable 10 is connected.
  • housing 12 contains and locates an electric circuit board or module 26 behind a further sealed cover plate 28.
  • the inner end of shaft 20 carries a radially extending sensor arm 30 mounting a magnet 32 at its distal end.
  • the electric control circuit for motor 14 in or on module 26 includes a pair of Hall effect sensors 34a, 34b on a mounting 36 in spaced relationship to arm 30 so that the sensors co-act with magnet 32 at respective angular positions of shaft 20.
  • crank 24 is angularly positioned on shaft 20 so that at a start position, with cable 10 retracted with respect to a fixed cable guide 38 said crank is substantially at right- angles to the direction of pull on the cable, whereas when shaft 20 has rotated anti-clockwise as viewed in the drawings to draw cable 10 to the finish position shown in Fig.2b, the line of pull is close to the axis of rotation of shaft 20.
  • This arrangement progressively increases the force applied through cable 10 and hence to the claw as the actuator crank 24 approaches said finish position, thus matching the actuator power output with the progressively increasing force needed to close the door against its weather seals as it moves from the first safety position, corresponding to the start position of Fig.2a.
  • Fig.3 is a graph representing the power output of a sample of the described actuator in relation to the distance of travel of cable 10 from the start position (left-hand side of the graph) to the finish position (right-hand side of the graph) at which the door has been shut fully and retained by the latch mechanism.
  • This arrangement ensures reliable operation along with the most efficient and effective use of the energy available for driving the actuator.
  • the position sensors 34a, 34b are positioned to corresponding to said start and finish positions of shaft 20 and operate to limit angular movement thereof to the range of those positions by turning motor 14 on and off through the logic built into module 26. It will be appreciated that other types of position sensors could be utilised eg Reed switches or other forms of micro-switch. As magnet 32 is mounted directly on shaft 20 which in turn carries output crank 24 the position sensing is particularly positive giving exact tracking of movement. The sensors can be positioned to suit the range of operation required. As there are no physical limit stops controlling the range of movement noise and stress on the mechanism is reduced. As there is no physical contact between the moving element and the position sensors assembly tolerances are less critical, the operation is unaffected by wear, and the electrical components of the actuator can be wholly separated from the mechanical parts for increased durability and reliability.

Landscapes

  • Lock And Its Accessories (AREA)

Abstract

L'invention concerne un actionneur de commande d'un verrou d'une porte de véhicule, destiné à la fermeture commandée d'une porte, telle que décrite ci-avant. Cet actionneur comprend un moteur (14), connecté de manière à entraîner un arbre de sortie de commande (20), ainsi qu'un élément de transmission de l'entraînement monté sur l'arbre de sortie pour raccorder de manière opérante un organe de blocage du verrou, afin d'entraîner un pêne de celui-ci et de faire passer la porte associée, d'une première position de sécurité, dans une position de fermeture totale. Cet actionneur est caractérisé en ce que l'élément de transmission de l'entraînement est un bras de manivelle (24) dont l'extrémité radiale extérieure est reliée de manière fonctionnelle à l'organe de blocage par un accouplement (10), en ce que le bras est placé de manière angulaire de sorte que la force appliquée sur l'organe de blocage augmente progressivement lorsqu'il est déplacé à partir de sa première position de sûreté, par pivotement du bras (24), ce qui rapproche l'axe longitudinal de l'accouplement (10) de l'axe de rotation de l'arbre.
PCT/GB1999/001595 1998-05-22 1999-05-20 Verrou de porte de vehicule WO1999061729A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9810972A GB2337555A (en) 1998-05-22 1998-05-22 Vehicle door latch power actuator
GB9810972.1 1998-05-22

Publications (1)

Publication Number Publication Date
WO1999061729A1 true WO1999061729A1 (fr) 1999-12-02

Family

ID=10832498

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/001595 WO1999061729A1 (fr) 1998-05-22 1999-05-20 Verrou de porte de vehicule

Country Status (2)

Country Link
GB (1) GB2337555A (fr)
WO (1) WO1999061729A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9121217B1 (en) 2001-07-13 2015-09-01 Steven M. Hoffberg Intelligent door restraint

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0110456D0 (en) 2001-04-28 2001-06-20 Meritor Light Vehicle Sys Ltd Latch assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378291A (en) * 1966-04-25 1968-04-16 Gen Motors Corp Closure latch
EP0215702A1 (fr) * 1985-09-05 1987-03-25 Rockwell-Cim Serrure à ouverture et fermeture électriques, notamment pour portières de véhicules automobiles
DE3744135A1 (de) * 1986-12-30 1988-07-14 Motrol Spa Elektrisch betaetigbares schloss zur anwendung in fahrzeugen
US4892339A (en) * 1987-07-29 1990-01-09 Kiekert Gmbh & Co. Kommanditgesellschaft Power-closing motor-vehicle door latch
DE4218177A1 (de) * 1992-06-02 1993-12-09 Bayerische Motoren Werke Ag Stelleinheit für Schlösser von Kraftfahrzeugen
US5443292A (en) * 1992-07-08 1995-08-22 Ohi Seisakusho Co., Ltd. Power lid closing device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480342A1 (fr) * 1980-04-14 1981-10-16 Renault Mecanisme de serrure electrique pour la portee de coffre d'un vehicule automobile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378291A (en) * 1966-04-25 1968-04-16 Gen Motors Corp Closure latch
EP0215702A1 (fr) * 1985-09-05 1987-03-25 Rockwell-Cim Serrure à ouverture et fermeture électriques, notamment pour portières de véhicules automobiles
DE3744135A1 (de) * 1986-12-30 1988-07-14 Motrol Spa Elektrisch betaetigbares schloss zur anwendung in fahrzeugen
US4892339A (en) * 1987-07-29 1990-01-09 Kiekert Gmbh & Co. Kommanditgesellschaft Power-closing motor-vehicle door latch
DE4218177A1 (de) * 1992-06-02 1993-12-09 Bayerische Motoren Werke Ag Stelleinheit für Schlösser von Kraftfahrzeugen
US5443292A (en) * 1992-07-08 1995-08-22 Ohi Seisakusho Co., Ltd. Power lid closing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9121217B1 (en) 2001-07-13 2015-09-01 Steven M. Hoffberg Intelligent door restraint
US9995076B1 (en) 2001-07-13 2018-06-12 Steven M. Hoffberg Intelligent door restraint

Also Published As

Publication number Publication date
GB2337555A (en) 1999-11-24
GB9810972D0 (en) 1998-07-22

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