EP3477030B1 - Hilfsvorrichtung für ein öffnungselement eines fahrzeugs - Google Patents

Hilfsvorrichtung für ein öffnungselement eines fahrzeugs Download PDF

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Publication number
EP3477030B1
EP3477030B1 EP18202614.6A EP18202614A EP3477030B1 EP 3477030 B1 EP3477030 B1 EP 3477030B1 EP 18202614 A EP18202614 A EP 18202614A EP 3477030 B1 EP3477030 B1 EP 3477030B1
Authority
EP
European Patent Office
Prior art keywords
opening
assistance device
cylinder
leaf
drive mechanism
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.)
Active
Application number
EP18202614.6A
Other languages
English (en)
French (fr)
Other versions
EP3477030A1 (de
Inventor
Florin BARBOI
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.)
Renault SAS
Original Assignee
Renault SAS
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Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP3477030A1 publication Critical patent/EP3477030A1/de
Application granted granted Critical
Publication of EP3477030B1 publication Critical patent/EP3477030B1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1008—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring parallel with the pivot axis
    • E05F1/1016—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring parallel with the pivot axis with a canted-coil torsion spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
    • E05F1/105—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1091—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a gas spring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/214—Disengaging means
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/644—Flexible elongated pulling elements
    • E05Y2201/654—Cables
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
    • E05Y2600/10—Adjustable
    • E05Y2600/30—Adjustment motion
    • E05Y2600/32—Rotary motion
    • E05Y2600/322—Rotary motion around a horizontal axis
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/20—Combinations of elements
    • E05Y2800/22—Combinations of elements of not identical elements of the same category, e.g. combinations of not identical springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/53—Type of wing
    • E05Y2900/546—Tailboards, tailgates or sideboards opening upwards

Definitions

  • the present invention relates to an assistance device for an opening of a motor vehicle.
  • the invention also relates to an opening system comprising such an assistance device.
  • the invention also relates to a motor vehicle comprising such an assistance device or such an opening system.
  • the opening of an opening articulated in rotation about a horizontal axis requires a certain force on the part of the user.
  • the center of gravity of the sash When the center of gravity of the sash is moved upwards, the user must bear the weight of the sash.
  • the center of gravity of the sash When the center of gravity of the sash is moved downward, the user must hold the weight of the sash to prevent it from descending too quickly.
  • assistance jacks sometimes called “balancers”
  • Such balancers are capable of storing the energy supplied by the opening during a manipulation, for example the closing of the opening, and of restoring the energy stored during another manipulation, for example the opening. of the opening.
  • the balancers can be designed to achieve automatic opening of the sash, that is to say without effort on the part of the user over the entire travel of the sash from the closed position to the open position. Closing the opening then requires effort from the user. The closing phase is therefore inconvenient, which can lead to poor closing or poor locking of the opening in the closed position.
  • assistance devices provided with electric motors for opening and / or closing an opening is also known.
  • Such devices are complex, generate additional manufacturing costs and are bulky, which makes it difficult to integrate them into a vehicle.
  • US 2015/052704 A1 shows an example of an assistive device.
  • the aim of the invention is to provide an assistance device and an opening system overcoming the above drawbacks and improving the assistance devices and the opening systems known from the prior art.
  • the invention makes it possible to produce an assistance device and an opening system which are simple, practical to use, compact and reliable.
  • the second structure is movable in rotation about an axis of rotation relative to the first structure, the anchoring point being eccentric relative to said axis of rotation.
  • the assistance device comprises a spring between the first structure and the second structure.
  • the spring is a spiral spring.
  • the assistance device may comprise a means for limiting a displacement amplitude of the second structure relative to the first structure, in particular the means for limiting the amplitude comprising at least one guide pin integral with the second cooperating structure. with at least one oblong hole in the first structure.
  • the drive mechanism may include a switch wire against which pressing causes the drive mechanism to move from the retracted position to the drive position.
  • Supporting the at least one jack against the cleat of the drive mechanism can cause the anchor point to move relative to the first structure.
  • the opening system may include a tooth attached to the body such that pressing the drive mechanism against the tooth moves the drive mechanism from the drive position to the retracted position.
  • the assistance device and the actuator can be arranged so that the door opens, under the sole action of the actuator or of several actuators, over part or over the entire stroke between its closed position and its position. opened.
  • the assistance device and the actuator can be arranged so that the opening opens, under the sole action of the actuator or of several actuators, over the whole of the stroke between its closed position and its open position, and of so that the opening closes, under the sole action of the force of gravity on the opening, over a part of the travel between its open position and its closed position.
  • the leaf may be movable in rotation about an opening axis, a lever arm of the action of the actuator on the leaf decreasing during part of the closing stroke and / or a lever arm of the actuator action on the leaf increasing sharply when the leaf is in the closed position or in the vicinity of the closed position.
  • the at least one assistance device of the opening system comprises a spring between the first structure and the second structure, the spring being successively loaded and unloaded during the same opening and / or closing movement of the 'opening.
  • the invention also relates to a motor vehicle comprising at least one assistance device as defined above and / or an opening system as defined above.
  • the X axis designates the longitudinal axis of the vehicle. In forward gear and in a straight line, the vehicle advances from rear to front in a direction parallel to its longitudinal axis.
  • the X axis is oriented from the front to the rear of the vehicle, that is to say in the direction of reverse.
  • the Y axis designates the transverse axis of the vehicle.
  • the Y axis is oriented from left to right.
  • the Z axis denotes the axis perpendicular to the X axis and the Y axis.
  • the Z axis is a vertical axis when the vehicle is resting on horizontal ground.
  • the Z axis is oriented from bottom to top.
  • the X, Y and Z axes form a direct orthonormal coordinate system.
  • the vehicle is considered to rest on horizontal ground.
  • this same reference defined by reference to a vehicle, will also be used for an assistance device, even considered outside a vehicle, since it is intended for a vehicle. mounting in a specific orientation on a vehicle.
  • the figure 1 schematically illustrates a motor vehicle 1 equipped with an opening system 2 according to one embodiment.
  • the motor vehicle 1 can be of any type.
  • the motor vehicle 1 can be a city car with a hatchback, a sedan, a minivan, an SUV (abbreviation of the English term Sport Utility Vehicle) or even a utility vehicle.
  • the opening system 2 comprises a body 10 of the motor vehicle 1, an opening 20, at least one cylinder 30 for assisting the closing. and / or the opening of the opening 20 and at least one assistance device 100 according to one embodiment.
  • the body 10 is a rigid structure of the motor vehicle 1. As can be seen in particular on the figures 9 to 12 , the body 10 comprises a rear roof cross member 11 extending substantially transversely at the top and at the rear of the motor vehicle 1.
  • the cross member 11 is extended at each end by two uprights 12 extending substantially vertically and downwards. At their lower end, the two uprights 12 can be joined via a rear floor.
  • the cross member 11, the two uprights 12 and the rear floor can define a boot opening 13 on which the opening 20 can be closed.
  • Each upright 12 comprises a rebate 14, in other words a recess, accommodating the opening 20 when it is in the closed position.
  • Such a rebate 14 can also serve as a gutter and drain, for example, rainwater to evacuate it from the motor vehicle 1.
  • the rebate 14 comprises a first face 15 extending in a plane substantially parallel to the vertical axis Z and to the longitudinal axis X and turned towards the inside of the motor vehicle 1.
  • the rebate 14 comprises a second face 16 extending in a plane substantially parallel to the vertical axis Z and to the transverse axis Y and facing towards the rear of the vehicle.
  • the uprights 12 could have any other shape.
  • the opening 20 is a tailgate, in other words a trunk door.
  • the opening 20 is movable relative to the body 10, between an open position and a closed position.
  • the leaf 20 is movable in rotation about an opening axis Y1, parallel to the transverse axis Y and to the rear roof cross member 11.
  • the opening 20 is rigid and extends in a plane suitable for closing the trunk opening framed by the body 10.
  • the leaf 20 is shown in the open position. It then extends substantially parallel to the horizontal plane.
  • the closed position the leaf 20 is folded against the body 10 and extends generally parallel to the vertical axis Z and to the transverse axis Y.
  • the closed position of the leaf 20 is shown in particular on the figures. figures 15 and 16 .
  • the leaf 20 opens by an upward rotational movement and closes by a downward rotational movement.
  • the height of the center of gravity 21 of the opening 20 in the open position is therefore higher than the height of the center of gravity of the opening 20 in the closed position.
  • the solution could be used for other doors of a vehicle for which the height of the center of gravity varies during opening or closing.
  • the opening system 2 comprises a hinge 22 at an interface between the opening 20 and the rear cross member 11 of the roof.
  • the opening system 2 can include a locking device capable of locking the opening 20 in the closed position.
  • the opening system 2 can be symmetrical along a median plane parallel to the longitudinal axis X and parallel to the vertical axis Z.
  • the opening system 2 then comprises two jacks 30 and two assistance devices 100 arranged on either side. on the other side of the opening 20, between the opening 20 and each upright 12 of the body 10.
  • the opening system 2 therefore comprises on the one hand a left assembly comprising a left cylinder and a left assistance device and on the other hand a right assembly comprising a right cylinder and a right assistance device.
  • These two sets are symmetrical, so we will focus on describing one in particular: the left cylinder and the left assistance device.
  • the opening system could comprise only a single assistance device and a single cylinder or any other number of assistance devices and cylinders.
  • the opening system could also have two jacks on either side of the opening, but a single assistance device on one side.
  • the jack 30 comprises two ends 31, 32 shown on the figures 13 to 16 : a first end 31 of the jack 30 is fixed to the assistance device 100, itself fixed to the body 10, and a second end 32 of the jack 30 is fixed to the opening 20.
  • the jack 30 is an extendable shaft formed by an inner tube sliding inside an outer tube.
  • an order of magnitude of the cylinder 30 when the leaf 20 is in the closed position is approximately 270mm and an order of magnitude of the cylinder 30 when the leaf is in the open position is approximately 400mm.
  • the jack 30 is provided with an elastic device (for example a spring or a pressurized gas), arranged so that it tends to exert an opening action of the opening.
  • an angle A1 can be defined as the angle formed between the axis of the jack 30 and the axis connecting the second end 32 of the jack 30 to the opening axis Y1.
  • the projection on a tangent of the path of the opening 20 of the force applied by the actuator 30 on the opening 20 is proportional to the force of the actuator 30 multiplied by the sine of the angle A1.
  • the smaller the angle A1 the less the mechanical torque applied by the jack 30 to the leaf 20, that is to say the less effective the force of the jack 30 is to open the leaf 20.
  • the assistance device 100 is interposed between the first end 31 of the jack 30 and the body 10. More precisely, it is fixed on the upright 12, against the first face 15 of the rebate 14, below the hinge 22 supporting the opening 20.
  • the assistance device 100 is fixed where a first end of a jack according to the state of the art is generally fixed, that is to say a jack directly fixed to the body.
  • the assistance device 100 comprises a first structure 110 fixed to the upright 12 of the body 10 and a second structure 120 fixed to the first end 31 of the jack 30.
  • the first structure 110 and the second structure 120 fit into one another. the other and together generally form a cylinder whose base is oriented parallel to the vertical axis Z and to the longitudinal axis X.
  • the height of the cylinder is oriented parallel to the transverse axis Y.
  • the first structure 110 is linked to the second structure 120 by a mechanical connection allowing a degree of freedom, in particular allowing rotation, that is to say a pivot connection.
  • the first structure 110 comprises a first disc 111 intended to be brought to bear against the first face 15 of the rebate 14 of the upright 12.
  • the first structure 110 also includes a fixing screw 112 intended to firmly hold the first disc 111 against the body 10. This fixing screw 112 passes through a circular opening 115 in the center of the first disc 111 and cooperates with an opening in the body 10.
  • the first disc 111 (not visible in this figure) is surmounted by a cylindrical flank 113 perforated by two oblong holes 114 arranged along the circumference of the cylindrical flank 113.
  • the second structure 120 particularly visible on figures 2 and 5 comprises a second disc 121 provided with a circular central opening through which emerges a third disc 117, integral with the first structure 110, and provided with two threaded openings 116 side by side.
  • the second disc 121 is surmounted by a cylindrical flank 122 provided with two guide pins 123 extending radially and cooperating with the two oblong holes 114 of the first structure.
  • the two guide pins 123 may consist of a screw 123a passing through the cylindrical flank and of a nut 123b.
  • the cylindrical flank 122 of the second structure 120 has a diameter slightly greater than the diameter of the cylindrical flank 113 of the first structure. Thus, the second structure 120 fits on top of the first structure 110.
  • each screw 123a between the cylindrical flank 122 and the nut 123b which cooperates with the corresponding oblong hole 114.
  • a first face of the second disc 121 is turned towards the inside of the assistance device, that is to say towards the first structure and a second face of the second disc faces towards the outside of the assistance device.
  • the second disc 121 comprises an anchoring point 124, projecting from the second face of the second disc, to which the first end 31 of the jack is fixed.
  • This anchoring point consists of a portion of a sphere connected to the second disc 121 by an axis perpendicular to the disc 121.
  • the connection between the jack and the assistance device is a ball joint.
  • the actuator can pivot relative to the assistance device along an axis parallel to the transverse axis Y but also around axes parallel to the transverse axis X and / or to the vertical axis Z.
  • the assistance device 100 can be used with a jack which is not entirely oriented in a vertical and longitudinal plane.
  • this link could be a simple link in rotation with an axis parallel to the transverse axis Y.
  • the anchoring point is fixed near an edge of the second disc, close to the outer circumference of the second disc. The anchoring point is therefore eccentric with respect to the center of the second disc 121.
  • the second structure is mobile in rotation with respect to the first structure along an axis Y2 passing through the center of the first disc 111 of the first structure 110 and through the center of the second disc 121 of the second structure 120. Consequently, the point d the anchor 124, integral with the disc 121, is also movable relative to the first structure 110.
  • the axis Y2 is parallel to the transverse axis Y.
  • the assistance device could be adapted to operate with a sliding connection between the first structure and the second structure in place of this rotating connection.
  • the amplitude of the rotational connection between the first and the second structure is limited by an amplitude limiting means.
  • This amplitude limiting means is obtained by the stop of the two guide pins 123 at the ends of the two oblong holes.
  • the amplitude of this connection can for example be between 45 ° and 90 °.
  • the two guide pins therefore ensure on the one hand a maintenance of the second structure against the first structure along the transverse axis Y, and on the other hand the limitation of the amplitude of the connection in rotation between the first structure and the second structure. Thanks to the amplitude limiting means, the variation of the lever arm of the action of the jack on the opening is defined.
  • the term “lever arm” is understood to mean the distance between the point of application of the force of the jack on the assistance device and the axis of rotation Y1.
  • the spring 130 cannot be actuated beyond its elastic limits.
  • the amplitude limiting means could only comprise a single guide pin cooperating with a single oblong hole.
  • the assistance device could not include amplitude limiting means, the extreme positions of the anchor point then being simply established by a balance of the forces of the jack on the assistance device when the sash is in the open or closed position.
  • the assistance device comprises a spring 130 between the first structure 110 and the second structure 120, particularly visible on figures 4, 5 and 6 .
  • the spring 130 is a return spring recalling the second structure relative to the first structure in a determined position relative to the first structure.
  • the spring is inside the cylindrical shape formed by the association of the first structure and the second structure.
  • the spring is a spiral spring.
  • the spiral spring comprises a metal blade wound on itself. A first end 131 of the metal blade, positioned towards the center of the spiral, is fixed to the first structure. A second end 135 of the metal blade, positioned towards the outside of the spiral, is fixed to the second structure.
  • the spiral spring has six windings on itself but this number could be different. The stiffness of the spiral spring can be adjusted, for example, by the number of windings, the thickness of the metal strip, the width of the metal strip or even by the choice of the material making up the metal strip.
  • the first end 131 of the spring 130 is clamped between two identical retaining elements 132 and positioned vis-à-vis, particularly visible on the figure 6 .
  • Each retaining element is screwed onto the third disc 117 by means of a screw 133 passing through one of the two threaded openings 116.
  • the retaining elements have the shape of a disc portion with a flat side and a rounded side.
  • the end of the blade is clamped between the flat side of each retaining element 132.
  • the circular side of each retaining element serves to shape the metal blade by giving a first coil of the spiral spring a circular shape.
  • the second end 135 comprises a 180 ° bend cooperating with a lug 125 integral with the second structure.
  • the lug and the fold are arranged so that the lug retains the second end 132 when the second structure is rotated relative to the first structure in the direction of the tensioning of the spiral spring.
  • the assistance device comprises a drive mechanism 140, schematically illustrated on the figures 7 and 8 .
  • the drive mechanism 140 is fixed to the second structure 120, more precisely to the outside of the cylindrical side 122.
  • the drive mechanism includes a first plate 141, a second plate 142, a cleat 143, a switch wire 144, and a torsion spring 145.
  • the drive mechanism 140 moves the second structure relative to the first structure against. the effect of the return spring 130 when the opening is closed.
  • the first plate 141 is a flat part of substantially oval shape and provided with a circular hole 141a, 141b at each end.
  • the first plate is articulated in rotation with respect to the second structure about a tangential axis T1 passing through a first circular hole 141a.
  • the tangential axis T1 is an axis substantially tangent to the cylindrical flank 122 of the second structure. Depending on the position P1, P2 of the second structure, this tangential axis can be either substantially parallel to the longitudinal axis X, or substantially parallel to the vertical axis Z.
  • the second plate is of identical shape to the first plate: it is a flat part of substantially oval shape and provided with a circular hole 142a, 142b at each end.
  • the second plate is articulated in rotation with respect to the first plate along an axis T2 parallel to the tangential axis T1.
  • an axis passes through the second circular hole 141b of the first plate and the first circular hole 142a of the second plate.
  • a cylindrical element 142c is fixed at the level of the second circular hole 142b of the second plate 142. This cylindrical element 142c bears against the stopper 143.
  • the stopper 143 is also articulated in rotation with respect to the second structure about an axis parallel to the tangential axis T1.
  • the cleat comprises a cylindrical opening supporting the articulation in rotation of the cleat relative to the second structure 120 and a bearing surface 143b able to bear against the jack.
  • the torsion spring 145 makes it possible to press the cylindrical element 142c against the stopper 143 regardless of the relative position of the second plate and the stopper.
  • the support of the cleat against the cylindrical element is oriented in the direction of the tangential axis T1.
  • the switching wire extends perpendicularly to the tangential axis T from the axis T2 passing through the second circular hole 141b of the first plate and the first circular hole 142a of the second plate.
  • the drive mechanism is able to take two positions P3, P4.
  • the drive mechanism can take a drive position P3, illustrated on figure 7 , wherein the tab protrudes from the second structure to form a drive stopper.
  • the actuator pivots around the anchor point of the assistance device and can come into contact with the cleat, against the bearing surface 143b.
  • the displacement of the cylinder during closing is illustrated by an arrow F2 on the figure 7 .
  • the switching wire is then positioned behind the jack: it is positioned opposite the jack with respect to the cleat.
  • the drive mechanism can take a retracted position P4, illustrated on figure 8 , in which the cleat is folded back along the second structure.
  • the actuator pivots around the anchoring point of the assistance device passes in front of the cleat without touching it.
  • the actuator can come into contact with the switching wire.
  • the movement of the cylinder during closing is illustrated by an arrow F3 on the figure 8 .
  • the thrust of the cylinder against the switching wire is transmitted to the axis T2 and has the effect of rotating the first plate and the second plate.
  • the cylindrical element 142c of the second plate presses on the stopper 143 which also pivots.
  • the drive mechanism then moves from the retracted position P4 to the drive position P3.
  • the two positions P3, P4 of the drive mechanism are stable positions. That is to say, the drive mechanism can remain in position P3 or in position P4 in the absence of external support.
  • Such a mechanism can also be called “bistable” by analogy in the field of electronics.
  • Other embodiments of a bistable mechanism could be envisaged.
  • the opening system also comprises a tooth 150 fixed to the body, more precisely on the second face 16 of the rebate of the upright.
  • the tooth protrudes from the second face 16 along an axis parallel to the longitudinal axis X.
  • the tooth is positioned on the path of the mechanism. drive when rotating the second structure relative to the first structure. More precisely, the tooth is positioned on the path of the axis passing through the second circular hole 141b of the first plate and the first circular hole 142a of the second plate, the drive mechanism being in its drive position P3. Pressing the tooth against the rotating joint between the first plate 141 and the second plate 142 changes the drive mechanism from the drive position P3 to the retracted position P4.
  • the opening kinematics of the sash is illustrated in a three-dimensional view on the figures 9 to 12 .
  • the opening kinematics are schematically illustrated on the figures 13 to 16 and in three-dimensional view on figures 17 to 19 . In the three-dimensional views, the opening is not shown so as not to hide the assistance device 100.
  • the general concept of the invention consists in moving the anchoring point 124 so as to vary the efficiency of the thrust of the jack 30. Thus, it is possible to obtain a partial or total automatic opening or closing.
  • the figure 9 therefore illustrates the opening system while the leaf is in the closed position.
  • the jack is then positioned along the upright, inside the rebate 14.
  • the drive mechanism is in its retracted position P4.
  • the assistance device is in its first position P1, that is to say that the spring 130 is lightly loaded.
  • the anchor point is then positioned towards the bottom of the rebate so that the angle A1 is equal to or close to its maximum value. In this position, the thrust force produced by the jack is optimal.
  • the opening of the opening is said to be “automatic” because the user does not need to apply any force to the opening.
  • the opening of the sash can therefore be carried out remotely from the sash if the sash is unlocked using a remote control.
  • the figure 10 illustrates the opening movement of the leaf before the actuator comes into contact with the switching wire 144.
  • the actuator pivots around the point d anchor 124 while deploying.
  • the second structure 120 remains fixed relative to the first structure because the thrust of the cylinder keeps the guide pin 123 in abutment against the respective ends of the oblong holes 114.
  • the assistance device is then in its position P1.
  • the anchor point 124 therefore remains fixed relative to the body.
  • the figure 11 illustrates the contact of the actuator against the switching wire 144.
  • the pushing of the actuator against the switching wire 144 switches the drive mechanism from the retracted position P4 to the drive position P3.
  • the stopper 143 pivots to protrude from the second structure and passes behind the cylinder. The jack being in the process of raising it does not come into abutment against the cleat.
  • the figure 12 illustrates the opening system while the leaf is in the open position.
  • the jack is then oriented along an axis substantially parallel to the longitudinal axis X and is no longer in contact with the cleat.
  • the jack remains in contact with the switching wire 144 which is then in a position of maximum extension with respect to the drive mechanism.
  • the figures 13 to 16 schematically illustrate the operation of closing the opening.
  • the sash is in the open position and therefore in the same position as on the figure 12 .
  • the figure 14 and the figure 17 illustrate the opening system when the leaf comes into contact with the latch 143.
  • the latch 143 which was positioned behind the cylinder in the opening direction of the leaf is now in front of the cylinder in the closing direction.
  • the jack therefore abuts against the latch 143.
  • the stop of the jack against the latch blocks the rotational movement of the jack around the anchoring point.
  • the continuation of the closing movement beyond the contact of the jack against the cleat will therefore cause a rotation of the second structure relative to the first structure.
  • the second structure therefore passes from the first position P1 to the second position P2, or a position close to the position P2.
  • the spring 130 will therefore load progressively while the anchor point pivots around the axis Y2.
  • the anchoring point being eccentric on the second structure 120, it approaches the opening axis Y1.
  • the displacement of the anchor point has the effect of accentuating the reduction of the angle A1.
  • the angle A1 is reduced on the one hand by the effect of the rotation of the sash around the axis Y1 and on the other hand by the effect of the rotation of the anchor point 124 around the Y2 axis.
  • the figure 15 illustrates a position of the sash just before the closed position.
  • the assistance device is then in position P2 or close to position P2.
  • the spring 130 is more heavily loaded.
  • the angle A1 reaches a minimum value.
  • the drive mechanism comes into contact with the tooth 150.
  • the tooth presses on the drive mechanism at the level of the rotating articulation between the first plate 141 and the second plate 142 as is particularly visible on the figure 18 .
  • the second plate 142 pivots around the first plate and the drive mechanism moves from its drive position P3 to its retracted position P4.
  • the cleat is then no longer resting against the jack.
  • the spring 130 can then relax and the assistance device can resume its position P1. Closing is then continued until the sash is completely closed, shown on the figures 16 and 19 .
  • a new opening and closing cycle can then begin again.
  • the figures 20 and 21 represent a measurement of the resulting force F, applied to the center of gravity 21 of the leaf 20, taking into account the force of gravity (exerted in the direction of closing) and the force produced by the jack attached to the device assistance respectively during closing and during opening of the sash.
  • the resulting force F is oriented in the direction of the opening. Consequently, it is positive when it moves the sash in the opening direction and it is negative when it moves the sash in the closing direction.
  • the resulting force F is represented by an arrow on the figure 16 .
  • the resulting force F is measured as a function of the extension of the jack 30. An extension of the jack of 0mm corresponds to the closed position of the leaf.
  • the resulting force F does not take into account the effort of a user to open or close the sash. If the measurement of the resulting force is positive, a force from the user is required to close the sash. If the resultant force measurement is negative, a force from the user is required to open the sash.
  • a first step E1 corresponding to an extension of the jack of between 129mm and approximately 85mm, the force gradually increases from approximately 50N to approximately 60N. This step corresponds to the descent of the opening until the bearing of a jack against the cleat.
  • the jack comes into contact with the cleat and begins to drive the second structure 120 of the assistance device 100 in rotation.
  • the resulting force F increases rapidly from about 60N to about 80N. This increase is due to the preload of the spring 130 when it is in position P1. The load of the spring 130 opposes the closing movement.
  • the assistance device progressively passes from position P1 to position P2.
  • the progressive loading of the spring tends to increase the resulting force.
  • reducing the angle A1 tends to reduce the resulting force.
  • the displacement of the anchor point on the one hand and the spring load on the other hand therefore act in an opposite way on the resultant force F.
  • the effect of the displacement of the anchor point is greater than the effect of the spring load therefore the assistance device promotes the closing movement during steps E3 and E4.
  • step E4 corresponding to an extension of the jack of about 29mm, the force becomes negative: the effect of the force of gravity exceeds the effect the force of the cylinder. Closing of the leaf therefore becomes “automatic” and the leaf continues its closing stroke without the user needing to exert any force on it.
  • the switching wire 144 stops pressing on the jack, which causes an inflection point 162 on the curve of the resulting force.
  • Step E5 the drive mechanism returns from the drive position P3 to the retracted position P4 by pressing the drive mechanism against the tooth 150.
  • Step E5 is carried out. in the very last millimeters of cylinder extension, for example in the last or two last millimeters of cylinder extension.
  • the height of the tooth can be adjusted to define the position of the jack from which step E4 begins.
  • the spring 130 then relaxes suddenly, which has the effect of restoring the assistance device in position P1.
  • the spring is therefore successively loaded and unloaded during the same closing movement of the leaf.
  • Increasing the angle A1 results in an increase in the resulting force which reaches about 10N. Thanks to the inertia acquired by the opening during steps E3 and E4, the opening finishes its closing stroke without reopening.
  • the leaf can then be locked in the closed position and a new opening and closing cycle can start again.
  • the end of the closing travel of the opening can therefore be carried out without the user having to exert a force on the opening.
  • the closed position is thus obtained in a safe and pleasant manner for the user.
  • the user does not run the risk of getting their fingers caught in the opening while accompanying the closing of the opening to its closed position.
  • the user applies a closing force to the sash only in steps E1, E2 and E3, the weight of the sash making it possible to carry out the final phase of closing the sash in steps E4 and E5.
  • an assistance device and an opening system offering automatic opening and partially automatic closing of the leaf.
  • the assistance device is entirely mechanical. It does not include any connectors or motorization which improves its reliability and simplicity of installation.
  • the assistance device can be simply inserted between the body and the assistance cylinder of an opening without compromising the architecture of the vehicle.
  • the assistance device can even be installed during an after-sales maintenance operation.
  • the opening system could also be adapted so that the assistance device is fixed to the opening instead of being fixed to the body.
  • the jack would advantageously be turned over so that the non-extensible part of the jack cooperates with the drive mechanism.

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)

Claims (11)

  1. Hilfsvorrichtung (100) für ein Öffnungselement (20) eines Kraftfahrzeugs (1), welche umfasst:
    - eine erste Struktur (110), die dazu bestimmt ist, an einer Karosserie (10) oder an einem Öffnungselement (20) eines Kraftfahrzeugs (1) befestigt zu werden,
    - eine zweite Struktur (120), die einen Verankerungspunkt (124) umfasst, der dazu bestimmt ist, an einem Zylinder (30) zur Unterstützung des Schließens und/oder des Öffnens eines Öffnungselements (20) befestigt zu werden, wobei die zweite Struktur (120) in Bezug auf die erste Struktur (110) beweglich ist,
    dadurch gekennzeichnet, dass die zweite Struktur (120) in Bezug auf die erste Struktur drehbeweglich um eine Drehachse (Y2) ist, wobei der Verankerungspunkt (124) in Bezug auf die Drehachse (Y2) exzentrisch angeordnet ist,
    und dadurch, dass sie eine Feder (130) zwischen der ersten Struktur (110) und der zweiten Struktur (120) umfasst, wobei die Feder (130) eine Spiralfeder ist, wobei die Feder während ein und derselben Öffnungs- und/oder Schließbewegung des Öffnungselements nacheinander belastet und entlastet wird.
  2. Hilfsvorrichtung (100) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass sie ein Mittel zur Begrenzung einer Verlagerungsamplitude der zweiten Struktur (120) in Bezug auf die erste Struktur (110) umfasst, wobei insbesondere das Mittel zur Begrenzung der Amplitude wenigstens einen mit der zweiten Struktur (120) fest verbundenen Führungszapfen (123) umfassen, der mit wenigstens einem Langloch (114) in der ersten Struktur (110) zusammenwirkt.
  3. Hilfsvorrichtung (100) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie einen Antriebsmechanismus (140) umfasst, der an der zweiten Struktur (120) befestigt ist, wobei der Antriebsmechanismus (140) mit einem Riegel (143) versehen ist und der Antriebsmechanismus (140) zwei stabile Positionen einnehmen kann:
    - eine Antriebsposition (P3), in welcher der Riegel (143) aus der zweiten Struktur (120) hervorragt, um einen Mitnahmeanschlag zu bilden,
    - eine Rückzugsposition (P4), in welcher der Riegel (143) an der zweiten Struktur (120) entlang zurückgeklappt ist.
  4. Hilfsvorrichtung (100) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Antriebsmechanismus (140) einen Schaltdraht (144) umfasst, wobei ein Drücken gegen diesen bewirkt, dass der Antriebsmechanismus (140) von der Rückzugsposition (P4) in die Antriebsposition (P3) übergeht.
  5. Öffnungssystem (2), dadurch gekennzeichnet, dass es umfasst:
    - eine Karosserie (10) für ein Kraftfahrzeug (1),
    - ein Öffnungselement (20), insbesondere eine Heckklappe, das in Bezug auf die Karosserie (10) drehbeweglich zwischen einer geöffneten Position und einer geschlossenen Position ist,
    - wenigstens einen Zylinder (30) zur Unterstützung des Schließens und/oder des Öffnens des Öffnungselements (20), und
    - wenigstens eine Hilfsvorrichtung (100) nach einem der vorhergehenden Ansprüche,
    wobei die erste Struktur (110) der wenigstens einen Hilfsvorrichtung (100) an der Karosserie (10) befestigt ist, wobei die zweite Struktur (120) der wenigstens einen Hilfsvorrichtung (100) an einem ersten Ende (31) des wenigstens einen Zylinders (30) befestigt ist, wobei ein zweites Ende (32) des wenigstens einen Zylinders (30) an dem Öffnungselement (20) befestigt ist.
  6. Öffnungssystem (2), dadurch gekennzeichnet, dass es umfasst:
    - eine Karosserie (10) für ein Kraftfahrzeug (1),
    - ein Öffnungselement (20), insbesondere eine Heckklappe, das in Bezug auf die Karosserie (10) drehbeweglich zwischen einer geöffneten Position und einer geschlossenen Position ist,
    - wenigstens einen Zylinder (30) zur Unterstützung des Schließens und/oder des Öffnens des Öffnungselements (20), und
    - eine Hilfsvorrichtung (100) nach einem der Ansprüche 3 bis 4,
    wobei die erste Struktur (110) der wenigstens einen Hilfsvorrichtung (100) an der Karosserie (10) befestigt ist, wobei die zweite Struktur (120) der wenigstens einen Hilfsvorrichtung (100) an einem ersten Ende (31) des wenigstens einen Zylinders (30) befestigt ist, wobei ein zweites Ende (32) des wenigstens einen Zylinders (30) an dem Öffnungselement (20) befestigt ist, wobei ein Drücken des wenigstens einen Zylinders (30) gegen den Riegel (143) des Antriebsmechanismus (140) die Verlagerung des Verankerungspunktes (124) in Bezug auf die erste Struktur (110) hervorruft.
  7. Öffnungssystem (2) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass es einen Zahn (150) umfasst, welcher derart an der Karosserie (10) befestigt ist, dass ein Drücken des Antriebsmechanismus (140) gegen den Zahn (150) bewirkt, dass der Antriebsmechanismus (140) von der Antriebsposition (P3) in die Rückzugsposition (P4) übergeht.
  8. Öffnungssystem (2) nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Hilfsvorrichtung (100) und der Zylinder (30) so eingerichtet sind, dass sich das Öffnungselement (20) unter der alleinigen Wirkung des Zylinders (30) oder mehrerer Zylinder auf einem Teil oder auf der Gesamtheit des Weges öffnet, der zwischen seiner geschlossenen Position und seiner geöffneten Position liegt.
  9. Öffnungssystem (2) nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Hilfsvorrichtung (100) und der Zylinder (30) so eingerichtet sind, dass sich das Öffnungselement (20) unter der alleinigen Wirkung des Zylinders (30) oder mehrerer Zylinder auf der Gesamtheit des Weges öffnet, der zwischen seiner geschlossenen Position und seiner geöffneten Position liegt, und so, dass sich das Öffnungselement (20) unter der alleinigen Wirkung der Schwerkraft auf das Öffnungselement auf einem Teil des Weges schließt, der zwischen seiner geöffneten Position und seiner geschlossenen Position liegt.
  10. Öffnungssystem (2) nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass das Öffnungselement (20) drehbeweglich um eine Öffnungsachse (Y1) ist, wobei sich ein Hebelarm der Wirkung des Zylinders (30) auf das Öffnungselement (20) während eines Teils des Schließweges verkleinert, und/oder dadurch, dass sich ein Hebelarm der Wirkung des Zylinders (30) auf das Öffnungselement (20) sprunghaft vergrößert, wenn sich das Öffnungselement (20) in der geschlossenen Position oder in der Nähe der geschlossenen Position befindet.
  11. Kraftfahrzeug (1), welches wenigstens eine Hilfsvorrichtung (100) nach einem der Ansprüche 1 bis 4 und/oder ein Öffnungssystem (2) nach einem der Ansprüche 5 bis 10 umfasst.
EP18202614.6A 2017-10-31 2018-10-25 Hilfsvorrichtung für ein öffnungselement eines fahrzeugs Active EP3477030B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1760273A FR3072994B1 (fr) 2017-10-31 2017-10-31 Dispositif d'assistance pour un ouvrant d'un vehicule

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Publication Number Publication Date
EP3477030A1 EP3477030A1 (de) 2019-05-01
EP3477030B1 true EP3477030B1 (de) 2020-12-30

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FR (1) FR3072994B1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6755458B1 (en) * 2000-09-29 2004-06-29 Intier Automotive Closures Inc. Liftgate force control
CA2444670A1 (en) * 2002-09-27 2004-03-27 Litens Automotive Low-mounted powered opening system and control mechanism
US9376850B2 (en) * 2012-03-14 2016-06-28 Aisin Seiki Kabushiki Kaisha Opening/closing assistance device for opening/closing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR3072994A1 (fr) 2019-05-03
EP3477030A1 (de) 2019-05-01
FR3072994B1 (fr) 2020-06-26

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