WO2000005470A1 - Blocage motorise de portiere de vehicule - Google Patents

Blocage motorise de portiere de vehicule Download PDF

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Publication number
WO2000005470A1
WO2000005470A1 PCT/US1999/016408 US9916408W WO0005470A1 WO 2000005470 A1 WO2000005470 A1 WO 2000005470A1 US 9916408 W US9916408 W US 9916408W WO 0005470 A1 WO0005470 A1 WO 0005470A1
Authority
WO
WIPO (PCT)
Prior art keywords
lever
lock
lock lever
actuator
detent
Prior art date
Application number
PCT/US1999/016408
Other languages
English (en)
Inventor
Frank Joseph Arabia, Jr.
Donald Michael Perkins
Rita Margarete Paulik
Jerry Paulik
Michael Todd Moury
Original Assignee
Delphi Technologies, Inc.
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 Delphi Technologies, Inc. filed Critical Delphi Technologies, Inc.
Publication of WO2000005470A1 publication Critical patent/WO2000005470A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
    • E05B81/04—Electrical
    • E05B81/06—Electrical using rotary motors
    • 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
    • E05B77/22—Functions related to actuation of locks from the passenger compartment of the vehicle
    • E05B77/24—Functions related to actuation of locks from the passenger compartment of the vehicle preventing use of an inner door handle, sill button, lock knob or the like
    • E05B77/28—Functions related to actuation of locks from the passenger compartment of the vehicle preventing use of an inner door handle, sill button, lock knob or the like for anti-theft purposes, e.g. double-locking or super-locking
    • 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
    • E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
    • 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
    • E05B81/16—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on locking elements for locking or unlocking action
    • 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
    • E05B81/32—Details of the actuator transmission
    • E05B81/34—Details of the actuator transmission of geared transmissions
    • 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
    • E05B15/004—Lost motion connections
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/56—Control of actuators
    • E05B81/62—Control of actuators for opening or closing of a circuit depending on electrical parameters, e.g. increase of motor current
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/90—Manual override in case of power failure

Definitions

  • This invention relates generally to a vehicle door latch and more particularly to a vehicle door latch that has a forkbolt, a detent for holding the forkbolt in a latched position, a release mechanism for moving the detent to a position releasing the forkbolt, a lock mechanism for disabling the release mechanism, and a power assembly for operating the lock mechanism.
  • An automotive closure such as a door for an automobile passenger compartment, is hinged to swing between open and closed positions and conventionally includes a door latch that is housed between inner and outer panels of the door.
  • the door latch functions in a well known manner to latch the door when it is closed and to lock the door in the closed position or to unlock and unlatch the door so that the door can be opened manually.
  • the door latch is operated remotely from the exterior of the automobile by two distinct operators- typically a key cylinder that controls the lock mechanism and an outside door handle or push button that controls the release mechanism.
  • the door latch is also operated remotely from inside the passenger compartment by two distinct operators - a sill button that controls the lock mechanism and an inside door handle that controls the release mechanism.
  • Vehicle door latches for upscale automobiles also typically include a power assembly which also operates the lock mechanism and/or a keyless entry in which a key fob transmitter sends a signal to a receiver in the vehicle to operate a power assembly for the motor driven lock mechanism.
  • the object of this invention is to provide a power operated vehicle door latch that is compact and durable. Another object of the invention is to provide a power operated vehicle door latch that has a reduced number of moving parts.
  • a feature of the power operated vehicle door latch of the invention is that the power operated vehicle door latch has a pivotally mounted lock lever and a power assembly has a coaxial pivotally mounted actuating lever for operating the the lock lever.
  • the power operated vehicle door latch has a has a pivotally mounted composite lock lever to accommodate a premature unlatching operation and a subsequent power unlocking operation without jamming the power operated vehicle door latch.
  • the power operated vehicle door latch has a power assembly that includes an actuating lever for operating a lock lever of the lock mechanism that accommodates independent mechanical operation of the lock lever and that automatically returns to a neutral position after a power operation.
  • Figure 1 is an exploded perspective rear view of a vehicle door latch in accordance with the invention
  • Figure 2 is a partial front view of the door latch of figure 1 showing various parts of the vehicle door latch in position in solid line when the door latch is latched and unlocked and in dashed line when the door latch is unlatched and unlocked;
  • Figure 3 is a partial rear view of the vehicle door latch of figure 1 showing the parts in position in solid line when the door latch is latched and unlocked and in dashed line when the door latch is unlatched and unlocked;
  • Figure 4 is a partial rear view of the vehicle door latch of figure 1 showing the parts in position in solid line when the door latch is latched and unlocked and in dashed line when the door latch is latched and locked
  • Figure 5 is a partial rear view of the vehicle door latch of figure 1 equipped with an optional power lock and showing various parts in position in solid line when the door latch is latched and locked and in dashed line when the door latch is latched and unlocked;
  • Figure 6 is a section view taken substantially along the line 6-6 of figure 5 looking in the direction of the arrows:
  • Figure 7 is a partial rear view of the vehicle door latch of figure 1 equipped with an optional power lock and an optional double lock and showing various parts in position when the door latch is latched and unlocked with the double lock disengaged;
  • Figure 8 is a partial rear view of the door latch of figure 7 showing the parts in position when the door latch is latched, locked and double locked;
  • Figure 9 is a partial rear view of the door latch of figure 7 showing the parts in position when the door latch is latched, locked and double locked and an unlocking operation is undertaken by an inside operator such as a sill button or the like;
  • Figure 10 is a partial rear view of the door latch of figure 7 showing the parts in position in dashed line when the door latch is latched, locked and double locked and in solid line when an unlocking operation is initiated by an outside key cylinder or the like;
  • Figure 11 is a partial rear view of the door latch of figure 7 showing the parts in position in dashed line when an unlocking operation has been initiated by an outside key lock cylinder or the like and in solid line when the unlocking operation has been completed by an upper lock lever.
  • the vehicle door latch 10 has a multi- piece enclosure that comprises plastic housing 12, metal frame or face plate 14, a plastic back cover 16 and an electric control frame 13.
  • the plastic housing 12 and the metal face plate 14 are held together by three flanged studs 18, 20 and 22 that are inserted through three holes in plastic housing 12, then through three aligned holes in the metal face plate 14 and then flanged over the metal face plate 14 to form a forward compartment.
  • Metal face plate 14 has three holes 15 substantially equally spaced from each other defining an imaginary substantially equilateral triangle (not shown).
  • Mounting nuts 17 are secured to face plate 14 behind holes 15 for mounting door latch 10 in a vehicle door (not shown).
  • Door latch 10 has a latch mechanism comprising a forkbolt 24 and a cooperating detent 26 that are located in the forward compartment and pivotally mounted on the forward portions of studs 18 and 20 respectively.
  • forkbolt 24 is biased clockwise (counterclockwise in figure 1) by a compression return spring 28 that is disposed in a curved slot in plastic housing 12 behind forkbolt 24.
  • Spring 28 engages a lateral lug 30 of forkbolt 24 at one end and an end wall of the curved slot at the other end.
  • Detent 26 is biased counterclockwise (clockwise in figure 1) into engagement with forkbolt 24 by a compression spring 32 that engages an ear 27 of detent 26 at one end. The opposite end of compression spring 32 engages an internal wall of housing 12.
  • Detent 26 engages forkbolt 24 at shoulder 36 and holds forkbolt 24 in a primary latched position against the bias of compression spring 28 as shown in sold line in figure 2. Detent 26 can also engage forkbolt 24 at shoulder 38 and hold it in an intermediate secondary latched position. Detent 26 engages forkbolt 24 at foot 40 in its unlatched or release position as shown in dashed line in figure 2. Face plate 14 is removed in figure 2 to facilitate illustration of internal components.
  • Detent 32 has a lateral pin 34 that extends through housing slot 42 into a rear compartment formed by plastic housing 12 and plastic back cover 16. Back cover 16 is attached to housing 12 by five screws (not shown) at five locations 43 along the periphery of back cover 16 with electric control frame 13 sandwiched between back cover 16 and housing 12.
  • Door latch 10 has a release mechanism for releasing or unlatching the latching mechanism that is best shown in figures 1, 3 and 4.
  • the release mechanism comprises an unlatching lever 44 and an intermittent lever 46 for operating detent 26 that are located in the rearward compartment that is formed by plastic housing 12 and back cover 16.
  • Unlatching lever 44 is pivotally mounted on stud 22 and held in place by flange 48.
  • a torsion return spring 45 surrounds stud 22 between unlatching lever 44 and housing 12.
  • One end of torsion return spring 45 is anchored to housing 12 and the other end engages unlatching lever 44 so that unlatching lever 44 is biased clockwise to a generally horizontal latching position as viewed in figure 1, 3 and 4.
  • Back cover 16 is removed in figures 3 and 4 to facilitate illustration of internal components.
  • the lower end of intermittent lever 46 is pivotally attached to one end of unlatching lever 44 by intermittent lever pin 50.
  • Pin 50 has a forward pivot portion and a rearward drive portion that projects rearwardly of intermittent lever 46.
  • the opposite end of unlatching lever 44 5 is bent outwardly to provide a generally perpendicular tab 52 that is used for operating unlatching lever 44.
  • the upper end of intermittent lever 46 has a drive pin 54 that is disposed in a slot of a composite lock lever 56.
  • Intermittent lever 46 has a forward facing groove 58 located between pins 50 and 54 that receives the end of detent pin 34 that projects through
  • Detent pin 34 engages a drive shoulder 58c at the upper end of a short drive portion 58a of groove 58 when door latch 10 is unlocked as shown in figure 3.
  • the release mechanism further comprises an outside release lever 60.
  • One end of outside release lever 60 is pivotally mounted on stud 20 behind a support plate 62 that receives the rearward portions of studs 18 and 20 and stabilizes the studs.
  • outside release lever 60 projects out of the rearward compartment formed by housing 12 and back cover 16 for connection to an outside door handle or the like via a suitable linkage (not shown).
  • the middle portion of outside release lever 60 and a lower edge 66 engages the rearward drive portion of intermittent lever pin 50 so that outside release lever 60 pushes intermittent lever 50 down when outside release lever 60 is rotated counterclockwise as viewed in figures 1 and 3.
  • the release mechanism further comprises an inside release lever 68 that is L-shaped.
  • the middle of inside release lever 68 is pivotally mounted on a lower portion of a flange 19 of metal face plate 14 by a stud.
  • Inside release lever 68 has an L-shaped arm 70 at the lower end that engages ear 52 of unlatching lever 44 so that inside release lever 68 rotates unlatching lever 44 counterclockwise when it is rotated clockwise as viewed in figures 1, 3 and 4.
  • Inside release lever 68 also has a perpendicular tab 72 at the lower end that projects into a slot in flange 19 to limit the pivotal movement of the inside release lever 68.
  • the upper end of inside release lever 68 is connected by suitable linkage for rotation by an inside door handle or other operator (not shown).
  • Forkbolt 24 has a conventional slot or throat 74 for receiving and retaining a striker pin 75 of a strike assembly 77 that is attached to a vehicle door pillar (not shown) to latch the vehicle door in the closed position as shown in solid line in figure 2.
  • Forkbolt 24 also includes a primary latch shoulder 36, an intermediate secondary latch shoulder 38 and a radially projecting foot 40 as indicated above.
  • Forkbolt 24 preferably has a plastic coating that covers a surface of the slot 74 that is engaged by the strike member for energy absorption and quiet operation when the vehicle door is slammed shut.
  • Detent 26 has a sector shaped catch 76 that engages the radially projecting foot 40 when the forkbolt 24 is in the unlatched position shown in dashed lines in figure 2. The sector shaped catch 76 positively engages the primary and secondary latch shoulders 36 and 38 to hold the forkbolt 24 in either the primary latched position (figures 1 and 2) or the intermediate secondary latched position (not shown) .
  • the latch mechanism described above operates as follows. When the door latch 10 is in an unlatched and unlocked condition, forkbolt 24 is poised to receive striker pin 75 as shown in dashed lines in figure 2. Striker pin 75 projects into aligned fish mouth slots 78 and 80 of plastic housing 12 and metal face plate 14 when the door is shut. The entering striker pin 75 engages the back of the throat 74 and rotates forkbolt 24 counterclockwise against the bias of compression spring 28 until forkbolt 24 is rotated to the primary latch position shown in solid line in figure 2 where forkbolt 24 captures striker pin 75 in throat 74. Forkbolt 24 is held in the primary latch position by catch 76 of detent 26 engaging primary latch shoulder 36 of forkbolt 24.
  • Catch 76 rides along the periphery of the forkbolt 24 under the bias of compression spring 32 as forkbolt 24 rotates counterclockwise from the unlatched position to the primary latch position shown in figure 2 in dashed and solid line respectively. During this travel, catch 76 rides under the foot 40 into engagement with the intermediate secondary latch shoulder 38 and then into engagement with the primary latch shoulder 36. The engagement of catch 76 with the intermediate secondary latching shoulder 38 is sufficient to hold the vehicle door closed in the event that the vehicle door is not shut with sufficient force so that catch 76 engages primary latch shoulder 36.
  • Door Latch 10 has a lock mechanism for disabling the release mechanism that is also located in the rear compartment defined by housing 12 and back cover 16.
  • the lock mechanism includes the composite lock lever 56 which as indicated above, rotates intermittent lever 46 clockwise to a decoupled position with respect to detent pin 34 as shown in dashed lines
  • Composite lock lever 56 comprises a lower lock lever 82, an upper lock lever 84 and a compression spring 86 as shown in figure 4.
  • Lower lock lever 82 is pivotally mounted on stud 18 behind support plate 62.
  • Lower lock lever 82 has a pair of circumferentially spaced tabs 88 and 90 that cooperate with an optional power lock assembly 92 (figure 5) for rotating the lower lock lever between locked and unlocked positions.
  • Lower lock lever 82 also has a drive pin 94 (figure 1) that is engaged by inside lock lever 96 for rotating lower lock lever 82 between the locked and unlocked positions manually.
  • the apex of the V-shaped inside lock lever 96 is pivotally mounted on an upper part of face plate flange 19 by a stud as best shown in figures 1 and 4.
  • An extension at the apex includes a socket that receives drive pin 94 so that inside lock lever 96 rotates lower lock lever 82 counterclockwise when it rotates clockwise and vice-versa.
  • a laterally projecting tab 97 (figure 1) at the apex of inside lock lever 96 cooperates with a slot in face plate flange 19 to locate the engaged and disengaged positions of inside lock lever 96 at opposite ends of the flange slot.
  • An overcenter spring 98 (figure 1) has one end attached to flange 19 and the opposite end attached to the inside lock lever 96 so that inside lock lever 96 is biased against one end or the other of the flange slot. Stated another way, inside lock lever 96 is biased to either an engaged or a disengaged position by overcenter spring 98.
  • the V-shaped inside lock lever 96 has a hole at the end of each leg.
  • One or other of the holes is used for attaching inside lock lever 96 to an operator inside a vehicle, such as a sill button, via a suitable linkage (not shown).
  • the hole that is used depends on the application of door latch 10.
  • Upper lock lever 84 is pivotally mounted on stud 18 on top of lower lock lever 82 as shown in figure 4.
  • Compression spring 86 is disposed between lower and upper lock levers 82 and 84 and contained in a curved slot formed by portions of lower lock lever 82 and upper lock lever 84.
  • One end of compression spring 86 engages a stop 85 of lower lock lever 82 and the other end of spring 86 engages a stop 87 of upper lock lever 84 so that upper lock lever 84 is biased clockwise with respect to lower lock lever 82 as best shown in figures 4 and 5.
  • Upper lock lever 84 has a slot 100 at the lower end and an ear 102 at the upper end. Slot 100 receives drive pin 54 of intermittent lever 46. Ear 102 cooperates with an optional double lock assembly 104 as explained below.
  • An optional key cylinder lever 106 is pivotally mounted on stud 18 on top of upper lock lever 84 as shown in figures 1 and 3. Key cylinder lever 106 has been omitted in figures 4 and 5 for clarity. Key cylinder lever 106 has a drive slot 108 at one end that receives a drive lug 110 of lower lock lever 82 so that lower lock lever 82 is rotated by outside lock lever 106. Drive slot 108 is wider than drive lug 110 to permit independent operation of inside lock lever 96. Key cylinder lever 106 has a radial ear 109 near the socket end that also cooperates with the optional double lock assembly 104 as explained below.
  • key cylinder lever 106 has a hole for attaching the key cylinder lever to a key lock cylinder or the like by a suitable linkage (not shown).
  • Key cylinder lever 106 is used in any application having a key lock cylinder or the like, such as front doors of vehicles. However, key cylinder lever 106 may be omitted in any application that does not have a key lock cylinder or other operator for unlocking a vehicle door from the exterior, such as rear doors of passenger vehicles.
  • Door latch 10 is locked in the following manner.
  • Lower lock lever 82 is rotated counterclockwise from the unlocked position shown in figures 1, 3 and 4 to the locked position shown in dashed lines in figure 4 by rotating either key cylinder lever 106 counterclockwise or inside lock lever 96 clockwise.
  • Lower lock lever 82 drives upper lock lever 84 counterclockwise to the locked position via abutting portions 89 and 91.
  • slot 100 engaging drive pin 54 rotates intermittent lever 46 clockwise from the unlocked position shown in solid line figure 4 to a locked position shown in dashed line where drive pin 34 of detent 26 located in a lost motion portion 58b of groove 58. Consequently when intermittent lever 46 is pulled down by unlatching lever 44 or outside release lever 60 in an unlatching operation, motion is not transferred to detent pin 34.
  • Detent 34 therefore, stays engaged with forkbolt 24 and the door latch 10 remains latched.
  • Door latch 10 is unlocked by rotating the lower lock lever 82 clockwise back to the unlocked position shown in solid line in figure 4.
  • Lower lock lever 82 rotates upper lock lever 84 clockwise more or less simultaneously back to the unlocked position shown in solid line in figure 4 via compression spring 86.
  • slot 100 drives intermittent lever 46 counterclockwise back to the unlocked position via pin 54.
  • Composite lock lever 56 may be replaced by a simpler lock lever of unitary construction (not shown) in a basic vehicle door latch.
  • the composite lock lever 56 is preferred because the composite lock lever 56 provides an anti-jamming feature that allows premature actuation of inside release lever 68 or outside release lever 60 and a subsequent unlocking operation while either inside release lever 68 or outside release lever 60 is held in a release or unlatching position.
  • This anti-jamming feature operates as follows.
  • detent pin 34 is positioned in the elongated position 58b of intermittent lever slot 58.
  • intermittent lever 46 is pulled down so that detent pin 34 is repositioned in the upper portion of elongated slot portion 58b above drive shoulder 58c.
  • the one-piece lock lever cannot be pivoted clockwise back to the unlocked position if either release lever 60 or 68 is actuated and held in an unlatching or release position because intermittent lever 46 is held against rotation by detent pin 34 and cannot pivot counterclockwise.
  • composite lock lever 56 is particularly advantageous when a power lock assembly, such as the optional power lock assembly 92 described below is used because jamming is more likely to occur in a power unlocking operation rather than in a manual unlocking operation.
  • the composite lock lever 56 is also preferred because the optional double lock feature described below can be provided easily without any need for changing the lock lever.
  • door latch 10 may also be locked and unlocked by the optional power actuator assembly 92 shown in figures 5 and 6.
  • Power actuator assembly 92 comprises a reversible electric actuator motor 112 that drives an actuator worm gear 114 through a reduction gear set and slip clutch arrangement 115.
  • Worm gear 114 drives an integral sector gear at the upper end of an actuator lever 116.
  • Actuator lever 116 is pivoted on stud 18 and located between housing 12 and back plate 62 beneath lower lock lever 82.
  • Actuator lever 116 includes a drive lug 118 that is disposed between tabs 88 and 90 of lower lock lever 82 for driving lower lock lever 82 between the locked and unlocked positions.
  • Power actuator assembly 92 further includes a centering device that biases actuator lever 116 and drive lug 118 to a neutral position with respect to housing 12.
  • the centering device comprises compression spring 120 that is located between the back of housing 12 and the upper end of actuator lever 116.
  • the back of housing 12 has two pairs of radially spaced stops 122 and 124 that are circumferentially spaced from each other.
  • the front of actuator lever 116 has two circumferentially spaced stops 126 and 128 that fit between the respective pairs of radially spaced stops 122 and 124.
  • One end of compression spring 120 engages radially spaced stops 122 and stop 126.
  • the opposite end of compression spring 120 engages radially spaced stops 124 and stop 128.
  • power actuator assembly 92 also includes pinion gear 130 and spur gear 132 of a reduction gear set that drive connects electric motor 112 to worm gear 116 and a slip clutch arrangement 115.
  • Slip clutch arrangement 115 is achieved by mounting spur gear 132 rotatably on a cylindrical end of worm gear 114 the end face of which has an axially protruding lug 134 as best shown in figure 6.
  • Spur gear 132 has a counter bore 136 that holds a C-shaped spring 138 that biases itself against the cylindrical surface of counterbore 136.
  • Spring 138 has a V-shaped radial portion 140 that extends radially inward midway between the ends of the C-shaped spring.
  • Spur gear 132 drives worm gear 114 via spring portion 140 and lug 134.
  • Door latch 10 is locked by power actuator assembly 92 in the following manner.
  • a control switch is actuated that energizes electric motor 112 through a motor control circuit to drive pinion gear 130 clockwise for a predetermined amount of time.
  • the control switch can be manually operated or automatically operated responsive to vehicular drive or both.
  • Such control switches and motor control circuits are well known in the art and need not be described in detail.
  • Actuator lever 116 drives lower lock lever 82 counterclockwise from the unlocked position shown in solid line to the locked position shown in dashed line via drive lug 118 and tab 88.
  • Lower lock lever 82 drives upper lock lever 84 counterclockwise to the locked position shown in dashed line via engaging portions 89 and 91.
  • Upper lock lever 84 drives intermittent lever 46 clockwise to the locked position shown in dashed line via pin 54 and slot 100. If electric motor 112 is still energized after the actuator lever 116, lock levers 82 and 84 and intermittent lever 46 reach the locked position, slip spring 138 (figure 6) slips in counterbore 136 responsive to a predetermined torque level to protect electric motor 112 from overload.
  • centering spring 120 returns actuator lever 116 to the neutral position shown in solid line in figure 5 back driving worm gear 114 and backing lug 134 away from the radial portion 140 of slip spring 138 (figure 6). Lug 118 now engages tab 90 and the door latch 10 is in condition for a power unlocking operation as shown in figure 5.
  • Door latch 10 may be locked and unlocked manually without effecting the power lock assembly 92 because of the wide gap between tabs 88 and 90.
  • the wide gap allows manipulation of lower lock lever 82 between locked and unlocked positions without imparting any movement to actuator lever 116.
  • the gap is wider than lug 118 by a predetermined amount so that manual unlocking positions drive lug 118 against tab 88 for a subsequent power locking operation while manual locking positions drive lug 118 against tab 90 for a subsequent power unlocking operation.
  • the power lock assembly 92 can be used in a
  • the composite lock lever 56 provides an anti-jamming feature that is particularly advantageous in a door latch that has a power operated locking mechanism.
  • door latch 10 may also include the optional double lock assembly 104 that is shown in figures 1 and 7- 10. Double lock
  • assembly 104 comprises a reversible electric motor 142 that drives a screw 144 via a reduction gear set. Screw 144 is threaded into a lock block 146. These parts are part of a subassembly that includes a cradle 148 that is secured in a upper chamber in the rear compartment formed by housing 12 and back cover 16 which has been removed for clarity. Screw 144 extends down vertically into lock block 146 which
  • Lock block 146 has a vertical stop wall 150 and a contiguous ramp wall 151 that extend rearwardly. Lock block 146 also has a drive pin 152 below stop wall 150 and ramp wall 151 that extends rearwardly beyond walls 150 and 151. Walls 150 and 151 cooperate with ear 102 of upper lock lever 84 and drive pin 152 cooperates with ear 109 (figures 1, 3 and 10) of key cylinder lever 106.
  • Door latch 10 is double locked as follows. First door latch 10 is locked as described above which rotates both lower and upper lock levers 82 and 84 counterclockwise to the locked position shown in dashed lines in figure 4. This moves ear 102 of upper lock lever 84 out from its unlocked position above walls 150 and 151 of lock block 146 as shown in figure 7 to its locked position to the left of stop wall 150 as shown in figure 8.
  • Motor 142 which is usually controlled by a key lock cylinder or a key fob is then energized via electric control frame 13 to raise lock block 146 from the disengaged position shown in figure 7 to an engaged position shown in figure 8 where stop wall 150 of lock block 146 blocks ear 102 preventing upper lock lever 84 from rotating clockwise from the locked position shown in figure 8 back to the unlocked position shown in figure 7.
  • motor 142 stalls and deenergizes.
  • Control switches and motor control circuits are well known in the art and need not be described in detail as any suitable arrangement may be used.
  • door latch 10 cannot be unlocked by inside lock lever 96 because clockwise rotation of inside lock lever 96 to the unlocked position merely rotates lower lock lever 82 clockwise back to the unlocked position as shown in figure 9.
  • upper lock lever 84 being blocked by lock block 146 stays in the locked position with the clockwise rotation of lower lock lever 82 storing energy in compression spring 86 for subsequent disengagement of the double lock as shown in figure 9.
  • the optional double lock assembly 104 prevents unauthorized persons from entering a double locked vehicle by using the sill button or other inside lock operator to unlock the vehicle door and then unlatching the door using the outside door handle.
  • the double lock can be disengaged in two ways. One way is to reverse electric motor 142 so that lock block 146 is lowered from the engaged position shown in figures 8 and 9 back to the disengaged position shown in figure 7. This unblocks ear 102 and allows upper lock lever 94 to rotate clockwise back to the unlocked position shown in figure 7 under the action of compression spring 86 when door latch 10 is unlocked. In this regard it should be noted that the unlocking operation can be undertaken before or after double lock 104 is disengaged.
  • lower lock lever 82 is moved to the unlocked position cocking the lock mechanism.
  • Upper lock lever 84 and the rest of the locking mechanism is then moved to the unlocked position by spring 86 when double lock 104 is disengaged.
  • double lock 104 If double lock 104 is disengaged first, the unlocking operation proceeds in a conventional manner as in the case of a door latch that is not equipped with a double lock.
  • the second way to disengage double lock 104 is by a key entry by using a key lock cylinder (not shown) to rotate key cylinder lever 106 clockwise from the locked position shown in dashed line in figure 10 to the unlocked position shown in solid line.
  • key lock cylinder (not shown) to rotate key cylinder lever 106 clockwise from the locked position shown in dashed line in figure 10 to the unlocked position shown in solid line.
  • ear 109 engages drive pin 152 and pushes lock block 146 down to an intermediate position where ear 102 of upper lock lever 84 "turns the corner" moving from stop wall 150 to ramp wall 151 as shown in solid line in figure 10 (and in dashed line in figure 11 where key cylinder lever 106 has been removed for clarity).

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  • Lock And Its Accessories (AREA)

Abstract

Selon cette invention, un blocage motorisé de portière de véhicule possède un boulon à fourche (24), une détente (26) qui retient le boulon à fourche dans une position verrouillée, un mécanisme de libération (44, 46) qui déplace la détente (26) pour libérer le boulon à fourche, un mécanisme de verrouillage qui désactive le mécanisme de libération et un ensemble motorisé pour faire fonctionner le mécanisme de verrouillage. La détente (26) est déplacée par un levier intermittent (46) qui fait partie du mécanisme de libération ainsi que du mécanisme de verrouillage. Un levier de verrouillage (56) faisant partie du mécanisme de verrouillage déplace le levier intermittent (46) en avant et en arrière, entre une position déverrouillée dans laquelle le levier intermittent sollicite la détente (26) pour qu'elle libère le boulon à fourche et une position verrouillée dans laquelle le levier intermittent (46) se met en roue libre par rapport à la détente. Le levier intermittent est relié pivotant à un levier de déverrouillage (44) du mécanisme de libération, mû par les leviers de libération interne (68) et externe (60). Le levier de verrouillage (56) comprend un levier de verrouillage inférieur (82), un levier de verrouillage supérieur (84) et un ressort (86) qui accumule l'énergie lorsque le levier de verrouillage inférieur pivote par rapport au levier de verrouillage supérieur. Le mécanisme de verrouillage comprend un levier de verrouillage interne (96) et un mécanisme de verrouillage externe pour faire fonctionner le levier de verrouillage inférieur. L'ensemble motorisé (92) comprend un actionneur (112, 104) entraîné par un moteur de manière à faire fonctionner le levier de verrouillage du mécanisme.
PCT/US1999/016408 1998-07-21 1999-07-21 Blocage motorise de portiere de vehicule WO2000005470A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11967698A 1998-07-21 1998-07-21
US09/119,676 1998-07-21

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WO2000005470A1 true WO2000005470A1 (fr) 2000-02-03

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PCT/US1999/016408 WO2000005470A1 (fr) 1998-07-21 1999-07-21 Blocage motorise de portiere de vehicule

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WO (1) WO2000005470A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2824862A1 (fr) * 2001-05-15 2002-11-22 Ohi Seisakusho Co Ltd Appareil de verrouillage de porte d'un vehicule
FR2877977A1 (fr) * 2004-11-12 2006-05-19 Arvinmeritor Light Vehicle Sys Serrure de vehicule automobile

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911681A1 (de) * 1979-03-24 1980-10-02 Kiekert Soehne Arn Zentralgesteuerte verschlusseinrichtung fuer kraftfahrzeugtueren
GB2054725A (en) * 1979-06-09 1981-02-18 Fichtel & Sachs Ag Vehicle lock transmission mechanism
EP0645511A1 (fr) * 1993-09-28 1995-03-29 Ymos France Serrure pour porte de véhicule automobile
DE19611972A1 (de) * 1995-03-30 1996-10-10 Aisin Seiki Türverriegelungsvorrichtung
US5603537A (en) * 1994-05-13 1997-02-18 Nippondenso Co., Ltd. Door-lock driving system
US5680783A (en) * 1994-08-31 1997-10-28 Mitsui Kinzoku Kogyo Kabushiki Kaisha Door lock device with anti-theft mechanism
EP0834631A1 (fr) * 1996-09-04 1998-04-08 General Motors Corporation Serrure de porte de véhicule

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911681A1 (de) * 1979-03-24 1980-10-02 Kiekert Soehne Arn Zentralgesteuerte verschlusseinrichtung fuer kraftfahrzeugtueren
GB2054725A (en) * 1979-06-09 1981-02-18 Fichtel & Sachs Ag Vehicle lock transmission mechanism
EP0645511A1 (fr) * 1993-09-28 1995-03-29 Ymos France Serrure pour porte de véhicule automobile
US5603537A (en) * 1994-05-13 1997-02-18 Nippondenso Co., Ltd. Door-lock driving system
US5680783A (en) * 1994-08-31 1997-10-28 Mitsui Kinzoku Kogyo Kabushiki Kaisha Door lock device with anti-theft mechanism
DE19611972A1 (de) * 1995-03-30 1996-10-10 Aisin Seiki Türverriegelungsvorrichtung
EP0834631A1 (fr) * 1996-09-04 1998-04-08 General Motors Corporation Serrure de porte de véhicule

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2824862A1 (fr) * 2001-05-15 2002-11-22 Ohi Seisakusho Co Ltd Appareil de verrouillage de porte d'un vehicule
FR2877977A1 (fr) * 2004-11-12 2006-05-19 Arvinmeritor Light Vehicle Sys Serrure de vehicule automobile

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