EP0313454B1 - Servobetätigtes Schloss mit Rotationssperre - Google Patents

Servobetätigtes Schloss mit Rotationssperre Download PDF

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Publication number
EP0313454B1
EP0313454B1 EP19880402624 EP88402624A EP0313454B1 EP 0313454 B1 EP0313454 B1 EP 0313454B1 EP 19880402624 EP19880402624 EP 19880402624 EP 88402624 A EP88402624 A EP 88402624A EP 0313454 B1 EP0313454 B1 EP 0313454B1
Authority
EP
European Patent Office
Prior art keywords
bolt
closing
plate
pin
lock according
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 - Lifetime
Application number
EP19880402624
Other languages
English (en)
French (fr)
Other versions
EP0313454A1 (de
Inventor
Joel Girard
Christian Wattebled
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.)
Cessione vachette Ymos
Original Assignee
Vachette SA
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
Priority claimed from FR8714529A external-priority patent/FR2622241B1/fr
Application filed by Vachette SA filed Critical Vachette SA
Publication of EP0313454A1 publication Critical patent/EP0313454A1/de
Application granted granted Critical
Publication of EP0313454B1 publication Critical patent/EP0313454B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • 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
    • E05B81/21—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators for assisting final closing or for initiating opening with means preventing or detecting pinching of objects or body parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/43—Rear deck lid latches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1044—Multiple head
    • Y10T292/1045—Operating means
    • Y10T292/1047—Closure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1075—Operating means
    • Y10T292/1082—Motor

Definitions

  • the invention relates to a lock comprising a rotary bolt intended to cooperate with a keeper, of the type which includes: motor means capable of assisting at least the closing; manual control means making it possible to ensure opening and closing in the event of failure of the assistance motor means; a transmission device capable of communicating a rotary movement to the bolt from the assistance means for the direction which corresponds to the closing of the lock, as well as anti-blocking means suitable for being actuated by the control means manual in order to prevent the normal blocking action of the transmission device and to disconnect the bolt from the assistance means in the event of their failure.
  • the invention relates in particular, because it is in this case that its application seems to be of most interest, but not exclusively, such a lock intended for a system for closing a door of a motor vehicle, such as a trunk door, a side door, a hood or the like.
  • Such locks have a great smoothness of operation on closing and generally on opening, and improved comfort of use.
  • the user need only manually approach the door, the tailgate or equivalent member of its closed position so that the assistance means intervene automatically and complete, by themselves, closing the door.
  • These assistance means are generally electrical means.
  • the object of the invention is, above all, to provide a lock of the kind defined above which is of a simple and robust construction, and of a reduced space requirement in particular as regards the means for allowing the opening and closing in the event failure of the assistance means.
  • a lock of the kind defined above is characterized in that the transmission device is of the freewheel type and is mounted in a recess of the bolt, concentric with the axis of rotation of this bolt.
  • the device of the freewheel type may comprise notches provided on the internal wall of the recess, and at least one pawl mounted on a rotor and capable of cooperating with the notches, this pawl being elastically biased in the external radial direction to s' engage in a notch, the rotor being wedged on a shaft intended to be driven by the motor means.
  • the anti-blocking means may comprise means for erasing the pawl (s), which means comprise a plate mounted to slide in the radial direction, the movement of this plate being ensured by the manual control means, the plate being able to cooperate with at least one associated pawl to move it away from the internal surface of the recess of the bolt, when said plate is moved radially inwards.
  • Conjugated means comprising, on the one hand, an inclined lumen or ramp and, on the other hand, a pin engaged in this lumen are provided to ensure the radial displacement of the plate.
  • the pin is secured to a part mounted to rotate coaxially with the bolt and whose rotation is obtained by acting on the manual control means, while the inclined light in which the pin is engaged, is provided in the plate, l 'assembly being such that the rotation of the part in an appropriate direction causes the radial displacement of the plate inwards and releases the associated pawl from the notch of the internal recess.
  • the assistance motor means comprise a non-reversible electric geared motor, the rotor of the freewheel type transmission device being linked in rotation to the output shaft of this geared motor.
  • the manual control means advantageously comprise a push-button, or equivalent, suitable for controlling, during its depressing, first of all a switch intended to implement the assistance motor means then, during the continuation of its push-in stroke, manual opening control.
  • an obstacle is opposed to the complete closing of the door which is particularly troublesome in the case where motor assistance means intervene, because they can induce significant forces likely to cause damage on the obstacle hindering the closing.
  • Such an obstacle may be constituted, involuntarily, by a finger, a hand or by luggage.
  • the lock includes means sensitive to the closing resistance force capable of acting on the anti-blocking means and / or on the assistance means for stopping the assisted closing movement when the resistance force exceeds a predetermined value.
  • the above means sensitive to the resistance force are provided to act over a limited range, at the start of the closure.
  • the means sensitive to the closing resistance force comprise a declutching pin, elastically urged, capable of establishing a rotational connection between the bolt driven by the assistance means, and an auxiliary part capable of transmitting the forces. between the bolt and the strike.
  • the declutching pin is oriented substantially radially and is pushed, in the direction of the center, by a spring, this pin comprising a frustoconical head turned radially inward capable of cooperating with a V-shaped notch provided on the periphery of the auxiliary part, rotatably mounted coaxially with the bolt, the pin being carried by the bolt and being able to slide radially.
  • the auxiliary part may have the shape of a neck ronne and comprises an arm extending radially outwards suitable for projecting into a slot in the bolt intended to receive the keeper, the closing force being transmitted to the keeper by the above-mentioned arm.
  • the bolt has a protuberance located behind the arm of the crown, in the direction of rotation corresponding to the closure, an angular difference existing between the facing faces of the arm and of the protuberance when the declutching pin is engaged in the notch of the auxiliary part, this angular difference disappearing and the protrusion coming into abutment against the arm when the declutching pin is of the notch of the auxiliary part.
  • the anti-blocking means comprise a plate mounted to slide substantially in the radial direction and immobilized in rotation
  • this plate advantageously includes a flange which covers the path of the external end of the declutching pin, the assembly being such that when the pin comes out of the notch of the auxiliary part, its opposite end pushes the rim of the said plate, which is thus moved in translation and controls the release of the freewheel.
  • the edge of the above-mentioned plate covers the path of the end of the declutching pin over a limited angular extent corresponding, for example, to a stroke of approximately 10 mm from the keeper, at the start of the closing.
  • a reversing contact suitable for being controlled by the radial displacement of the aforesaid plate or of the declutching pin is provided, this reversing contact controlling the reversal of the direction of rotation of the assistance motor means; in this case, it is not essential to cause the freewheel to be released to stop the closing action since the rotation of the assistance motor is reversed.
  • the triggering threshold of the means sensitive to the closing resistance force corresponds to a force of the order of 10 daN at the level of the force on the keeper.
  • the lock is arranged in such a way that triggering or disengaging is possible only substantially over the first half of the closing stroke.
  • a lock S comprising a rotary bolt 1 intended to cooperate with a strike 2.
  • the lock S is intended for a system for closing a door of a motor vehicle. It is more particularly, for the embodiment of the drawings, a trunk door or a tailgate which pivots about a horizontal axis, oriented transversely to the average longitudinal direction of the vehicle.
  • the lock S comprises a base 3 intended to be fixed to the frame of the vehicle, and stationary relative to this frame.
  • the keeper 2 may include a cylindrical rod having a transverse part, provided on the trunk door or on the tailgate, and movable with the latter. According to the representation of FIG. 1, the keeper 2 therefore describes a circular movement around an axis located on the left of this figure 1.
  • the trajectory of keeper 2 is substantially tangent to a vertical, and the movement of the keeper 2 in the vicinity of the lock S is substantially a vertical rectilinear movement from top to bottom, during closing, and from bottom to top during opening.
  • the base 3 can form a sort of box comprising two parallel side walls 4 between which the bolt is mounted 1.
  • Each wall 4 has a notch 5 whose average direction is that of the movement of the keeper 2 in the vicinity of the lock S.
  • the mean direction of the notches 5 is vertical, these notches being open on the side of the keeper 2.
  • the bolt 1 is formed by a flat piece whose outline, visible in Figure 1, has two elongated edges which are substantially parallel.
  • the bolt 1 is rotatably mounted around a geometric axis A located on one side of the notch 5, on the right side according to the example of Figure 1.
  • the end of the bolt 1 intended to cooperate with the keeper 2 comprises a light 6, limited by two edges parallel to the longitudinal average direction of the bolt 1, and opening on the short side of this bolt facing the strike 2.
  • the average direction of this light 6 is inclined relative to the mean direction of the notch 5, and the opening of said lumen 6 is located in the opening of the notch 5 so that when the keeper 2 enters the notch 5, it penetrates also in said light 6.
  • the end 7 of the bolt opposite the light 6 may have a rounded shape, substantially half circle.
  • a radial extension 8 projecting downward in the embodiment of Figure 1 is provided in the connection area of this end 7 and a long side of the bolt.
  • the outer end of this extension 8 is connected to elastic means 9 for returning the bolt to the open position.
  • These return means 9 are advantageously formed by a tension spring, one end 10 of which is attached to the base 3, while the other end 11 of this spring is attached to a hole 12 provided towards the outer radial end of the extension 8.
  • the light 6 determines, in the bolt 1, two branches 13, 14 located respectively, according to the representation of FIG. 1, to the right and to the left of the mean direction of the light 6.
  • the branch 14 constitutes, in a way, the lower branch most engaged in the base 3.
  • a contact 15, sensitive to the passage of a magnet C carried by the branch 14, for example a "REED" contact is mounted in the base 3.
  • the magnet C In the open position of the lock, as shown in Figure 1, the magnet C is in the vicinity of the contact 15 which occupies a first state.
  • the bolt 1 rotates anti-clockwise, according to FIG. 1, and the end of the branch 14 moves away from the contact 15 which changes state, for example which goes from the open position to the closed position.
  • the contact 15 is suitable for controlling assistance motor means 16, possibly via a relay.
  • These drive means 16 are mechanically connected to the bolt 1 by a kinematic chain, shown diagrammatically, to assist at least the closing of the lock by driving the bolt 1 in the desired direction, that is to say in the opposite direction to the needles of a watch.
  • the motor means 16 are started in the opposite direction, for example by the action of a key or the action of a push button, which allows the bolt 1 under the action of elastic return means 9 to rotate in the opening direction, that is to say in the clockwise direction according to FIG. 1.
  • the lock S comprises a transmission device T of the freewheel type suitable for communicating to the bolt 1 a rotational movement from the assistance means 16 for the direction which corresponds to the closing of the lock, that is to say for the anticlockwise direction according to FIG. 1, as well as anti-blocking means L (FIGS. 2 and 3) suitable for being actuated by manual control means M in order to prevent the normal action for blocking the freewheel 17 and for uncoupling the bolt 1 from the assistance means 16 in the event of the latter failing.
  • a transmission device T of the freewheel type suitable for communicating to the bolt 1 a rotational movement from the assistance means 16 for the direction which corresponds to the closing of the lock, that is to say for the anticlockwise direction according to FIG. 1, as well as anti-blocking means L (FIGS. 2 and 3) suitable for being actuated by manual control means M in order to prevent the normal action for blocking the freewheel 17 and for uncoupling the bolt 1 from the assistance means 16 in the event of the latter failing.
  • the freewheel 17 is mounted in a recess 18 of the bolt 1 concentrically with the axis of rotation A of this bolt.
  • the freewheel 17 comprises notches 19 provided on the internal wall of the recess 18 and two pawls 20, diametrically opposite, mounted on a rotor 21 rotatably mounted on the walls 4 of the base 3, coaxially with the bolt 1.
  • Each pawl 20 is articulated, at one end, on the rotor 21, and is urged by elastic return means 22, in the external radial direction, to engage, by its other end, in a notch 19.
  • the rotor 21 is wedged on a shaft 23 which projects out from the base 3 (see FIG. 2), and which is integral in rotation with a lever 24 whose angular movements are controlled by the assistance means 16.
  • the anti-blocking means L comprise means E for erasing the pawls 20.
  • the means E comprise, for each pawl, a plate 25 ( Figures 2 and 3) slidably mounted in the radial direction.
  • Each of the two diametrically opposite plates 25 has a substantially rectangular outline, as visible in FIG. 3, the side of this plate facing the shaft 23 having a notch 26 in an arc of a circle.
  • the zone 27 of the plate 25 located radially outwards has a greater thickness, as visible in FIG. 2, so as to project transversely, on the side of the bolt 1, by a distance h with respect to the rest of the plate.
  • Each pawl 20, as visible in FIG. 2 has a transverse extension 28 forming a hinge pin in a housing of the base 3, on the side of the bolt 1 opposite to that where the plates are located.
  • the dimension of the pawl 20 according to a direction parallel to the axis A is greater than the thickness of the bolt 1 so that the pawl 20 can protrude, as shown in FIG. 2, beyond the face of the bolt 1 facing the plates 25.
  • a rim 29 in an arc is formed on the internal face of each plate 25 at the connection with the thickest part 27.
  • This rim 29 is located radially outside of the pawls 20.
  • the assembly is arranged in such a way so that the flange 29 comes to cooperate with the part of the pawl 20 projecting relative to the bolt 20, when the associated plate 25 is moved radially inwards, so that the pawl 20 is pushed towards the axis A to the against elastic return means and is therefore released from the notches 19.
  • each plate 25 is ensured, from the manual control means M, using combined means comprising for each plate 25, a light or ramp 30 inclined relative to the radial direction and a pin 31 engaged in this light 30.
  • the pin 31 is integral with a part 32, forming a lever, rotatably mounted coaxially with the bolt 1.
  • Two pins 31 are provided diametrically opposite to cooperate respectively with the light 30 provided in each plate 25.
  • the rotation of the part 32 is obtained by action on the manual control means M which exert a push or a pull at the radial end 33 of this part 32. According to the representation in FIG. 3, the rotation of the part 32 in the direction of Clock hands cause, due to the inclination chosen for the lights 30, a radial displacement towards the inside of the two plates 25 and therefore the erasure of the pawls 20.
  • the assistance motor means 16 can be constituted by a non-reversible electric gear motor, the output shaft of which is linked in rotation to the shaft 23 and to the rotor 21.
  • the locking of the bolt 1, in the closed position, is obtained by stopping the geared motor 16, the engagement of the pawls 20 in the notches 19 preventing rotation of the bolt since the shaft 23 is stationary.
  • the manual control means M can comprise a push button 34, or equivalent, suitable for controlling, during its depressing, first of all a switch 35 intended to implement the motor means 16 in the direction of rotation corresponding to the opening, then, during the continuation of the push-in stroke of the button 34, the manual control of the opening by action on the part 32.
  • the closing of the trunk door is obtained in a conventional manner by slamming this door in the closing direction.
  • the keeper 2 as shown in FIG. 1, moves from top to bottom to enter the notch 5 and the light 6.
  • the keeper causes the bolt 1 to rotate counterclockwise, which is possible because, for this direction of rotation of the bolt 1 relative to the rotor 21 stationary, the pawls 20 do not exert a blocking effect and disappear when the notches 19 pass.
  • Manual opening is obtained by acting on the manual means M and more particularly on the lever-forming part 32 (FIG. 3) by means of the push button 34.
  • the opening action on the push button 34 by fully depressing this push button, causes the lever 32 to rotate clockwise.
  • the cooperation of the pins 31 and the slots 30 causes the displacement of the plates 25 radially inwards, to the extreme position shown in FIG. 3.
  • the edges 29 of the plates 25 cooperate with the pawls 20 and move these pawls inwards, away from the notches 19.
  • the bolt 1 is then released in rotation and begins to rotate in the opening direction (clockwise according to the drawings), under the action of the return spring 9.
  • the keeper 2 is released and the door can be opened.
  • the keeper 2 For closing the door, the keeper 2 always performs the vertical movement from top to bottom according to FIG. 1, due to the manual action of the user on the door.
  • the entry of the keeper 2 in the light 6 causes the beginning of the rotation movement of the bolt 1 in the counterclockwise direction.
  • the shaft 23 and the rotor 21 are driven in the same direction which corresponds to the locking of the pawls 20 in the notches 19 and therefore to the locking of the freewheel 17 which transmits the rotational movement to the bolt 1.
  • information of rotation in the opposite direction is sent to the geared motor 16.
  • This information can be obtained, as explained previously, by the closing of a contact 35 obtained at the start of the travel of the push button. 34.
  • this information could be provided by the action of a key in the lock.
  • the bolt 1a and the keeper 2 are mounted respectively on each of the parts intended to be locked relative to each other when the lock is closed.
  • the keeper is generally mounted on a fixed part of the door frame, while the bolt is mounted on the edge of the door; reverse mounting would be possible.
  • the keeper 2 performs, relative to the axis A of the bolt rotation, a relative movement which can be compared to a translational movement in a direction D substantially orthogonally to axis A.
  • the bolt comprises, on one of its lateral flat faces, a boss 36 located behind the slot 6a according to the direction of rotation corresponding to the closure.
  • the direction of rotation being the clock direction and the light 6a being directed downwards
  • the boss 36 located on the face of the bolt visible in FIG. 4, is located at the bottom of the bolt .
  • the front face 37 of this boss 36 is flat and substantially parallel to the direction of the ray passing through the middle of the lumen 6a. This light determines in the bolt 1 has two branches 13a, 14_a.
  • the bolt 1a comprises, in a peripheral zone situated substantially opposite the lumen 6a, a radial extension 38 provided with a radial housing 39 in which a disengaging pin 40 is mounted.
  • This pin is resiliently stressed by a spring compression 41, radially inward.
  • the spring 41 bears, at its end located radially outward, against a transverse shoulder of the housing 39 and, at its opposite end, against a transverse shoulder determined by a cylindrical zone 42 of larger diameter of the pin 40.
  • This zone 42 is extended radially inwards by a frustoconical head 43.
  • An auxiliary part 44 also rotatably mounted about the axis A is linked in rotation to the bolt 1a by means of the pin 40.
  • This part 44 has the shape of a crown concentric with the bolt, and carries, on its periphery a notch 45, V-shaped, opening outwards and suitable for receiving the head 43 when the axis of the pin 40 is in the bisector plane of the notch 45.
  • the part 44 comprises, substantially opposite the notch 45, an arm 46 projecting radially outward and suitable for being in the lumen 6a when the head 43 is engaged in the notch 45.
  • the edge 47 , of this arm 46 located forwardly in the direction of closure of the lock, is located in front of the rear edge of the slot 6a; when the bolt 1a is rotated in the clockwise direction, the head 43 being in the notch 45, it is the edge 47 of the arm 46 which comes into contact with the keeper 2.
  • the rear edge 48 of the arm 46 is spaced an angular distance from the front face 37 of the boss 36 when the head 43 is in the notch 45. If the part 44 comes to rotate relative to the bolt 1a, in the direction contrary to clock, the rear edge 48 abuts against the face 37 (see FIG. 5).
  • the freewheel 17a is mounted in a recess 18a of the bolt 1a, concentrically with the axis of rotation A.
  • the freewheel 17a comprises notches 19a provided on the internal wall of the recess 18a, and at least one pawl 20 mounted on a rotor 21 suitable for being driven in rotation, by the means 16, coaxially with the bolt 1a.
  • the or each pawl 20 is articulated, at one end, on the rotor 21 and is urged by elastic return means 22, schematically represented, in the external radial direction to engage, by its other end, in a notch 19.
  • These means E comprise a plate 25a mounted to slide in the radial direction, but locked in rotation.
  • the plate 25a has a flange 49 extending along an arc centered on the axis A and located near the outer peripheral limit of the extension 38.
  • the plate 25a has another flange 29a, in an arc, capable of cooperating, during a radial displacement of the plate 25a, with a side projecting part of the pawl 20, on the side opposite to the crown 44.
  • the housing 39 opens, radially outward, through an opening 51 suitable for leaving pass the end 50, while the length H of the pin 40 is provided so that this pin does not protrude by its end 50 beyond the outer radial edge of the extension 38, when the head 43 is housed in the recess 45.
  • the end 50 protrudes beyond the edge of the extension 38 and, cooperating with the rim 49, pushes back the plate 25a and releases the pawl 20 from the notches 19 of the bolt.
  • the angular extent of the flange 49 is such that the end 50 of the pin 40 can cooperate with this flange 49 for the start of the closing stroke of the lock.
  • 52 denotes the range of the relative positions of the center of the keeper 2 for which a disengagement is possible, that is to say for which the end 50 can act against the flange 49.
  • the pin 40 is located beyond the flange 49, so that the end 50 cannot push back the flange 49, as visible on the figure 6.
  • the range 54 of the relative positions of the center of the keeper 2, represented in FIG. 4, corresponds to the manual approach and to the entry of the keeper 2 into the lumen 6a of the bolt.
  • a reversing contact 55 suitable for being controlled by the output of the pin 40 from the recess 43, in the disengaging range 52.
  • This contact 55 can be arranged so as to be controlled by the movement of the plate 25a; for example, the contact 55 comprises a pusher located opposite the external face of the flange 49, the pusher of the contact 55 being pressed when the plate 25a is moved upwards.
  • the contact 55 is combined with a control logic so as to control the reversal of the direction of rotation of the assistance motor means 16 and therefore the reversal of the direction of rotation of the rotor 21.
  • Contact means (not shown) sensitive to the position of the bolt, are provided to activate the assistance means 16 when, after a manual approach, the bolt has turned, in the closing direction, by a relative angle ment weak pre-determined.
  • the door to be closed is approached manually from its closed position and the keeper 2 enters the space limited by the front edge of the light 6a and the front edge 47 of the arm 46.
  • the manual approach corresponding to the range 54 causes, by cooperation of the keeper 2 and the front edge of the light 6a, the rotation of the bolt 1 a in the clockwise direction, the crown 44 remaining linked to the bolt by the head 43 engaged in the notch 45.
  • this approach phase no significant torque is to be transmitted from the bolt 1 a to the crown 4, from the output that there is no reason for the head 44 sort of notch 45.
  • the rotation of the bolt 1a is sufficient to control a starting contact for the assistance motor 16 so that the rotor 21 will be driven in rotation in the clockwise direction, and transmit this movement with the bolt by the cooperation of the pawl 20 and notches 19 provided on the bolt.
  • a torque is therefore transmitted from the rotor 21 to the bolt 1a by the pawl 20, which is arched, and from the bolt 1 a to the auxiliary part 44 by means of the declutching pin 40 whose head 43 is engaged in the recess 45.
  • a closing force is transmitted by the arm 46 to the keeper 42 in contact with it.
  • the rotor 21 starts to rotate in the opposite direction, which also eliminates any torque in the clockwise direction on the bolt 1a. In this case, it is not necessary to lift the pawl 20 and the lower flange 29a of the plate 25a can be eliminated.
  • This solution has the advantage of avoiding a matting of the end of the pawl 20 which cooperates with the teeth 19, as well as a matting of the end of these teeth. Indeed, when the plate 25a is moved to raise the pawl 20, a relatively large force is developed between this pawl 20 and the latch since resistance to closing manifests. Reversing the direction of rotation avoids relatively high friction and shocks.
  • the lock in accordance with FIG. 4 makes it possible to obtain a disengagement making the action of the assistance motor means cease, which avoids damage that is difficult to repair.
  • the pin 40 crosses the angular range corresponding to the flange 49.
  • the forces developed are greater than the triggering threshold of the declutching pin 40 and its spring 41 so that the head 43 will come out of the recess 45.
  • the end 50 can no longer act on the flange 49, assistance continues and the bolt 1a continues to be driven in rotation by the pawl 20, while the arm 46 and the keeper 2 are stopped.
  • the assembly is preferably arranged, in particular as regards the force of the spring 41 and the inclination of the faces 45, so that the disengagement occurs for a force, at the level of the keeper 2, of approximately 10 daN, while the closing force, at the end of closing, is of the order of 50 daN.
  • the declutching range 52 corresponds substantially to the first half of the closing stroke, while the range 53 corresponds to the second half.
  • range 54 corresponds for example to 5 mm, while range 52 corresponds to 10 mm and range 53 also to 10 mm.
  • a lock according to the invention is of a simple and robust embodiment, in a small space due to the housing of the freewheel in the bolt. It is clear that other types of freewheel than that described in the particular embodiment may be suitable.
  • Such a lock is applicable to any system for closing a motor vehicle door, side doors, trunk door, tailgate. Protection in the event of an obstacle during closing can be provided in a simple and space-saving manner.

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  • Lock And Its Accessories (AREA)

Claims (18)

1. Schloß mit einem drehbaren, mit einem Zapfen zusammenwirkenden Riegel, insbesondere für ein Schließsystem einer Automobiltür wie Kofferklappe, Seitentür oder Haube, mit Motoreinrichtungen zur Unterstützung wenigstens des Schließens sowie manuellen Betätigungseinrichtungen, die ein Öffnen und Schließen bei einem Ausfall der Hilfsmotoreinrichtungen gestatten, einer Übertragungseinrichtung (T), um den Riegel (1) von Hilfseinrichtungen (16) in einer Richtung in Drehbewegung zu setzen, die dem Schließen des Schlosses (S) entspricht, und Antiblockiereinrichtungen (L), die durch die Handbetätigungseinrichtungen (M) betätigbar sind, um die normale Blockierwirkung der Übertragungseinrichtung (T) zu verhindern und zum Entkuppeln des Riegels von den Hilfseinrichtungen (16) beim Ausfall derselben, dadurch gekennzeichnet, daß die Übertragungseinrichtung (T) als freilaufendes Rad (17) ausgebildet und in einer Ausnehmung (18) des Riegels befestigt ist, die konzentrisch zur Drehachse des Riegels liegt.
2. Schloß nach Anspruch 1, dadurch gekennzeichnet, daß die als freilaufendes Rad (17) ausgebildete Einrichtung (T) Einschnitte (19) in der Innenwand der Ausnehmung (18) aufweist, und daß wenigstens eine Klinke (20) auf einem Rotor (21) befestigt ist, die mit den Einschnitten (19) zusammenwirkt, wobei die Klinke (20) elastisch radial nach außen beaufschlagt ist, so daß sie in einen Einschnitt (19) eingreift, wobei der Rotor auf einer Welle (23) befestigt ist, die durch die Motoreinrichtungen (16) antreibbar ist.
3. Schloß nach Anspruch 2, dadurch gekennzeichnet, daß die Antiblockadeeinrichtungen (L) Einrichtungen (E) aufweisen, um die Klinke bzw. die Klinken (20) zurückzuziehen.
4. Schloß nach Anspruch 3, dadurch gekennzeichnet, daß die Einrichtungen (E) zum Zurückziehen der Klinke oder der Klinken (20) eine durch die Handbetätigungseinrichtungen (M) radial verschiebbare Platte (25) aufweisen, die mit wenigstens einer Klinke (20) zusammenwirkt, die so verbunden ist, daß sie von der Innenfläche der Ausnehmung (18) des Riegels entfernt wird, wenn die Platte (25) radial nach innen verschoben wird.
5. Schloß nach Anspruch 4, dadurch gekennzeichnet, daß verbundene Mittel einerseits einen geneigten Schlitz (30) und andererseits einen in den Schlitz greifenden Stift (31) aufweisen, um die radiale Verschiebung der Platte (25) zu ermöglichen.
6. Schloß nach Anspruch 5, dadurch gekennzeichnet, daß der Stift (31) fest mit einem Teil (32) verbunden ist, der koaxial mit dem Riegel (1) drehbar ist und der mit Hilfe der Handbetätigungseinrichtungen (M) drehbar ist, während der geneigte Schlitz (30), in den der Stift (31) greift, in der Platte (25) vorgesehen ist, wobei das ganze so ausgebildet ist, daß die Drehung des Teils (32) in einem geeigneten Sinn eine Radialverschiebung der Platte (25) zum Innern hervorruft und die verbundene Klinke (20) aus dem Einschnitt (19) der inneren Ausnehmung löst.
7. Schloß nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Hilfsmotoreinrichtungen (16) einen nicht reversiblen elektrischen Getriebemotor umfassen, wobei der Rotor (21) der als freilaufendes Rad ausgebildeten Übertragungseinrichtung (T) bei Drehung mit der Ausgangswelle des Getriebemotors verbunden ist.
8. Schloß nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Handbetätigungseinrichtungen (M) eine Drucktaste (34) aufweisen, die bei ihrer Betätigung einen Schalter (35) betätigt, der die Hilfsmotoreinrichtungen in Tätigkeit setzt, und bei weiterer Betätigung die Handbetätigung der Öffnung.
9. Schloß nach einem der vorstehenden Ansprüche, gekennzeichnet durch Einrichtungen (40, 41), die auf eine Widerstandskraft gegen das Schließen ansprechen, zum Einwirken auf die Antiblockiereinrichtungen (L) und/oder auf die Hilfseinrichtungen (16), um die Schließbewegung anzuhalten, die unterstützt wird, wenn die Widerstandskraft einen vorbestimmten Wert überschreitet.
10. Schloß nach Anspruch 9, dadurch gekennzeichnet, daß die auf die Widerstandskraft ansprechenden Einrichtungen vorgesehen sind, um am Beginn des Schließens auf eine begrenzte Platte (52) einzuwirken.
11. Schloß nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß die auf die Widerstandskraft ansprechenden Einrichtungen einen elastisch beaufschlagten Auslösestift (40) aufweisen, der eine Drehverbindung zwischen dem durch die Hilfseinrichtungen (16, 21) angetriebenen Riegel (1a) und einem Hilfsteil (44) bildet, die geeignet ist, die Kräfte zwischen dem Riegel (1 a) und dem Schließstift (2) zu übertragen.
12. Schloß nach Anspruch 11, dadurch gekennzeichnet, daß der Auslösestift (40) im wesentlichen radial ausgerichtet und in Richtung zur Mitte von einer Feder (41) beaufschlagt ist, wobei der Stift einen kegelstumpfförmigen Kopf (43) aufweist, der radial nach innen gerichtet ist und mit einer V-förmigen Kerbe (45) am Umfang des Hilfsteils (44) zusammenwirkt, das koaxial zum Riegel (1a) drehbar ist, wobei der Stift (40) vom Riegel (1a) getragen und radial verschiebbar ist.
13. Schloß nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß das Hilfsteil die Form eines Ringes (44) aufweist und einen sich radial nach außen erstreckenden Arm (46) aufweist, der in einen Schlitz (6a) des Riegels (1a) vorspringt, der zur Aufnahme des Schließstiftes (2) dient, wobei die Schließkraft durch den Arm (46) auf den Schließstift (2) übertragen wird.
14. Schloß nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß der Riegel (1a) einen in Schließ-Drehrichtung hinter dem Arm (46) des Ringes angeordneten Vorsprung (36) aufweist, wobei zwischen den Flächen (48, 37) bezüglich des Arms und des Vorsprunges ein Winkelabschnitt (j) besteht, wenn der Auslösestift (40) in den Einschnitt (45) des Hilfsteils greift und der Winkelabschnitt verschwindet und sich der Vorsprung (36) gegen den Arm (46) anlegt, wenn der Auslösestift (40) den Einschnitt (45) des Hilfsteils verläßt.
15. Schloß nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, daß die Antiblockiereinrichtungen (L) eine Platte (25a) aufweisen, die im wesentlichen in Radialrichtung verschiebbar und nicht drehbar ist, wobei die Platte (25a) einen Rand (49) aufweist, der die Bewegungsbahn des äußeren Endes (50) des Lösestiftes (40) bedeckt, wobei, wenn der Stift (40) den Einschnitt (45) des Hilfsteils verläßt, sein gegenüberliegendes Ende (50) den Rand der Platte zurückschiebt, so daß diese ebenfalls translatorisch verschoben wird und das freilaufende Rad (17a) löst.
16. Schloß nach Anspruch 15, dadurch gekennzeichnet, daß der Rand (49) der Platte (25a) die Bewegungsbahn des Endes (50) des Lösestiftes über eine begrenzte Winkelstrecke überdeckt, die am Beginn des Schließens z.B. einem Weg von etwa 10 mm des Lösestiftes entspricht.
17. Schloß nach einem der Ansprüche 11 bis 14, gekennzeichnet durch einen durch die radiale Verschiebung der Platte (25a) oder des Lösestiftes (40) steuerbaren Umkehrkontakt (55), der die Drehrichtung der Hilfsmotoreinrichtungen (16) umsteuert.
18. Schloß nach einem der Ansprüche 9 bis 17, dadurch gekennzeichnet, daß eine Lösung oder Entkopplung nur im wesentlichen über die erste Hälfte des Schließverlaufes möglich ist.
EP19880402624 1987-10-21 1988-10-18 Servobetätigtes Schloss mit Rotationssperre Expired - Lifetime EP0313454B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8714529A FR2622241B1 (fr) 1987-10-21 1987-10-21 Serrure assistee a pene rotatif
FR8714529 1987-10-21
FR8806852A FR2632003B2 (fr) 1987-10-21 1988-05-24 Perfectionnements aux serrures assistees a pene rotatif
FR8806852 1988-05-24

Publications (2)

Publication Number Publication Date
EP0313454A1 EP0313454A1 (de) 1989-04-26
EP0313454B1 true EP0313454B1 (de) 1990-12-19

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EP19880402624 Expired - Lifetime EP0313454B1 (de) 1987-10-21 1988-10-18 Servobetätigtes Schloss mit Rotationssperre

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US (1) US4927196A (de)
EP (1) EP0313454B1 (de)
DE (1) DE3861315D1 (de)
ES (1) ES2019468B3 (de)
FR (1) FR2632003B2 (de)

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Also Published As

Publication number Publication date
EP0313454A1 (de) 1989-04-26
US4927196A (en) 1990-05-22
ES2019468B3 (es) 1991-06-16
FR2632003B2 (fr) 1993-12-03
FR2632003A2 (fr) 1989-12-01
DE3861315D1 (de) 1991-01-31

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