WO2006035156A1 - Safety device for use in the event of a vehicle rollover - Google Patents
Safety device for use in the event of a vehicle rollover Download PDFInfo
- Publication number
- WO2006035156A1 WO2006035156A1 PCT/FR2005/002389 FR2005002389W WO2006035156A1 WO 2006035156 A1 WO2006035156 A1 WO 2006035156A1 FR 2005002389 W FR2005002389 W FR 2005002389W WO 2006035156 A1 WO2006035156 A1 WO 2006035156A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bar
- vehicle
- bars
- integral
- pawls
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/13—Roll-over protection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/13—Roll-over protection
- B60R2021/132—Roll bars for convertible vehicles
- B60R2021/134—Roll bars for convertible vehicles movable from a retracted to a protection position
- B60R2021/135—Roll bars for convertible vehicles movable from a retracted to a protection position automatically during an accident
Definitions
- the invention relates to a safety device in the event of overturning of a vehicle, and in particular such a device comprising at least two curved bars, each curved bar having a first and a second end, said bars being movable in case of overturning of the vehicle from an erased position to an extended position.
- such a device is intended for motor vehicles of convertible cabriolet type in which the roof, made in several parts, can be either above the passenger compartment covered configuration, or stored in the luggage compartment in convertible configuration .
- the invention aims to improve a device of this type, by providing a safety device in which the geometry of the bars is provided to optimize the storage volume inside the luggage compartment.
- the subject of the invention is a safety device in the event of overturning a vehicle, comprising at least two curved bars, each curved bar having a first and a second end, a first portion of the bar leaving the first end, and a second portion of the bar from the second end, said bars being movable in the event of overturning the vehicle, a position erased to an extended position, the first ends of said bars being hinged to a support, wherein the second portion of each bar is substantially rectilinear, and comprising at least two guide housings, each housing being provided with an elongate hole for receiving said second portion, said orifice extending substantially transversely to said second portion, said housing being adapted to be integral with a vehicle structure portion.
- Such a device has the advantage of saving space, this space can be advantageously used to store retractable roof elements, or as additional storage space in the trunk of the vehicle. This also simplifies manufacturing by avoiding superfluous bending, and thus reduce the cost of the device.
- the device further comprises:
- At least one locking member which maintains the prestressing and which is released by virtue of the triggering system thus releasing each bar from its erased position
- At least two anti-return systems each disposed between the second end of each bar and a part of the structure of the vehicle to prevent removal of the bar when the latter is in the deployed position.
- Each non-return system may be a ratchet system and, in particular, each ratchet system is disposed inside the corresponding bar, in the vicinity of the second end of said bar, each ratchet system being arranged to cooperate with elements of complementary shape integral with a structural part of the vehicle.
- the first end of each bar is articulated on a common central plate, so that said two bars each extend on one side of said plate, from one of the faces of said plate, and substantially symmetrically with respect to a plane, a device for controlling the locking and the release of each bar being provided on the same face of said plate, said articulation being produced by a bearing comprising a fixed part integral with the plate and a moving part. integral with the first end of the bar, the plate being intended to be fixed on a structural element of the vehicle.
- the mobile part of the bearing comprises a shaped element which cooperates with the locking member of the locking system so as: - firstly to immobilize the bent bars in their erased position and prestressing by engagement of the locking member with the shaped member; - on the other hand, releasing the bent bars by disengagement from the locking member of the shaped member.
- the prestressing system is disposed inside the fixed part of the bearing and in the immediate vicinity of the movable part of the bearing. Also in a particular embodiment, the devices for controlling the locking and the release of each bar are actuated by a common actuator.
- the subject of the invention is a motor vehicle comprising a structural element and at least one such safety device, said device comprising two guiding casings, each casing being situated on one of the sides of the vehicle and being integral with a portion of said structural member.
- the two guide boxes are interconnected by a connecting element which also supports the plate.
- the assembly comprising the safety device and the connecting element is fixed on the structural element.
- this vehicle may comprise one or more retractable elements to a storage position at the rear of the seats, at least one roof element being housed, in part, in the retracted position under said structural element.
- the subject of the invention is a method of mounting such a vehicle which, in a first step, provides for the assembly of an assembly comprising the safety device and the connecting element and, in a second step, mounting said assembly on said structural element.
- FIG. 1 is a rear view in perspective of a safety device for a motor vehicle, comprising two roll bars, the device being integrated into the passenger compartment of a motor vehicle;
- FIGS. 2a and 2b are front views of one side of the device of Figure 1, the hoop being shown respectively in the erased position (Figure 2a) and in the deployed position ( Figure 2b);
- FIG. 3 is an exploded view of the various elements forming one side of the security device of FIG. 1;
- FIG. 4 is an enlarged sectional view of the guide housing and ratchet system along the line A-A of FIG. 2b;
- FIG. 5 is a sectional view along the line B-B of Figure 4.
- FIG. 6 is a top view in section along the line VI-VI of Figure 7 of the control assembly of the hoops;
- FIG. 7 is a sectional view along the line VII-VII of Figure 6;
- - Figure 8 is a sectional view along the line VIII-VIII of Figure 6;
- Figure 9 is a sectional view along the line IX-IX of Figure 6;
- FIGS. 10a and 10b are perspective views respectively rear and front of the safety device when it is in the form of a pre-assembled module ready to be mounted in the passenger compartment of the vehicle.
- - Figure 11 is a cutaway view of a non-return system according to another embodiment of the invention.
- FIG. 1 shows two safety bars 1 and each consisting of a bent bar, or bent tube, forming two branches 2, 3 and 2 ', 3' respectively.
- the hoops 1 and the are hinged symmetrically along two opposite edges of a face of a plate 4.
- the two hoops being symmetrical, it will now describe only the hoop 1 and what concerns it.
- the arm 3 of the bow 1 has its free end, or first end 5, articulated at 5 on the plate 4 to pivot in its plane relative to this plate.
- the portion of bar 7 located between the second end 8 of the bar 2 and the bent portion 9 is of substantially straight shape.
- Figure 2a compares the size of the bar in which the portion starting from the second end is straight, and that of a bar in which the same portion is curved, shown in phantom. It is apparent that the curvature of the bar implies that it is projected towards the interior of the vehicle, which causes a loss of space represented by the distance D.
- the guide housing 10 of the bar is integral with a structural part of the vehicle, and is provided with an elongated orifice 11 intended to receive the straight portion 7 of the bar 2, the orifice 11 s extending substantially transversely with respect to the rectilinear bar portion, in the X direction.
- the ratchet system comprises teeth 12 formed on the pawls 13, these teeth cooperating with notches 14 which are formed on plates 15.
- Two plates 15 of substantially rectangular shape are provided on either side of the bar 2, so that the teeth of each plate 15 face the periphery of the bar 2.
- the plates 15 extend in two parallel planes and substantially perpendicular to the Y axis of advance of the vehicle. These plates 15 are fixed inside the guide housing 10.
- the ratchet system (see Figure 3) comprises a support 16, a portion 17 of cylindrical shape is intended to be introduced into the second end 8 of the bar 2.
- the cylindrical portion 17 comprises two orifices 18 receiving an axis 19 which serves as articulation to the two pawls 13.
- the inner portion of the portion cylindrical 17 is recessed so as to form two parallel flats 20 serving to support the outer faces of the pawls 13.
- the two pawls 13 are inserted between the two flats 20, which ensures satisfactory guiding and the lateral retention of the pawls 13.
- the ratchet system also comprises a V-shaped leaf spring 21.
- Each pawl 13 comprises, opposite the teeth 12, an end 22 formed of an L-shaped finger. The small branch of the L is inserted in a recess 23 formed at the end of the wings of the leaf spring 21. In this way, in operation, the two pawls 13 are pushed outwardly of the bar 2 under the action of the leaf spring 21.
- the teeth 12 pawls 13 pass through two oblong holes 24 made in the vicinity of the second end 8 of the bar 2, so that the teeth 12 protrude from the periphery of the bar 2.
- the hinge pin 19 further allows the ratchet system to be attached to the end of the bar 2.
- the cylindrical portion 17 of the support 16 is forcibly mounted to the inside the bar 2, the entire ratchet system having been assembled beforehand.
- Figures 4 and 5 show the three teeth 12 of each pawl 13 engaged in the three notches 14 of complementary shape formed on the plates 15, the bar 2 being, as shown in Figure 2b, in the deployed position. It should be noted that, when a trial operation of the device is performed, the unlocking of the pawls 13 can be performed simply by manually pushing the fingers 22 of the two pawls 13 against each other, in order to disengage the pawls 13 platelets 15, which then allows to fold the bar 2 to its erased position ( Figure 2a).
- the width of the wafers 15 is greater than the thickness of the teeth 12 pawls 13, so that the pawls 13 can have the full width of the wafers 15 to come to lock 15.
- Such an arrangement makes it possible to absorb a certain inaccuracy, resulting from manufacturing and assembly tolerances, in the relative position of the plates 15 with respect to the pawls 13. Consequently, the rectilinear shape of the portion 7 of bar 2 and the ratchet system can freely debate between the pads 15. It is therefore not necessary to provide a functional tolerance in the X direction.
- the plates 15 are arranged on either side of the bar 2 so that their respective teeth, which are substantially rectilinear in shape, extend perpendicularly to the axis of the straight portion 7 of the bar 2 when it is in the deployed position ( Figure 2b).
- the component of the forces acting in the axis of the rectilinear portion 7 of the bar 2 acts, via the teeth 12 of the pawls 13, on the teeth faces of the plates 15 which are perpendicular.
- Figure 11 shows a non-return system according to another embodiment of the invention.
- the ratchet system consists of two pawls 40, 41 rotatably mounted relative to the vehicle in the guide housing 10 of the bar 1, the respectively along an axis 42 and 43.
- the pawls have teeth 46 facing the second end 8 of the bar 1, the.
- a spring 44 makes it possible to constrain the pawls towards each other.
- Each end of the spring 44 is attached to a pawl 40, 41.
- the spring 44 is a pin spring.
- a rack 39 is secured to the second end 8 of the bars 1, 1 '.
- the rack 39 is secured to the bar by crimping or fitting.
- the rack 39 is fitted into the second end 8 of the bars 1, which is hollow.
- the upper end of the rack may have a cross-shaped section as shown.
- the rack 39 has notches 45 which are arranged to cooperate with the teeth 46 of the pawls 40, 41 when the bar 1, the is in the deployed position.
- the anti-return system prevents the return of the bar 1, the to its erased position.
- the width of the teeth 46 of the pawls is greater than the width of the notches 45 of the rack 39.
- the three arrows referenced C1, C2, C3 in FIG. 2b represent the evolution of the force acting on the bar during the overturning of the vehicle, when the latter pivots about the Y axis, in the opposite direction of the needles. of a watch.
- the arrow C1 represents the force acting on the bar when the vehicle is still on the side
- the arrow C2 represents the force when the vehicle is in an intermediate position
- the arrow C3 represents the force when the vehicle has rotated 180 degrees.
- the device according to the invention thus optimally absorb the forces acting on the bar during the overturning of the vehicle, by distributing them both on the bearing 25 of the plate 4 and on the ratchet system.
- the force acting on the bar is essentially absorbed by the bearing (arrow C1), then it is divided between the bearing and the ratchet system (arrow C2), and finally it is absorbed essentially by the ratchet system (arrow C3).
- the components of the forces acting on the first and second bar portions act essentially in compression, which makes it possible to optimize the crush resistance of the bar with respect to these forces, during the overturning of the vehicle.
- the rectilinear shape of the second bar portion avoids buckling stresses that inevitably appear in curved bars. This arrangement improves the crush resistance of the device.
- FIGS. 6 to 9 illustrate the control members of the rollbars.
- a preload spring 27 is disposed between the tube 26 and the tubular part 25, one of its ends being fixed to the tube 26 and its other end being fixed to the tubular portion 25. The spring is prestressed when the hoop is in its erased position.
- the end of the tube 26 protruding from the tubular portion 25 has a notch 28, within which is engageable a locking finger 29 to maintain the hoop in the erased position.
- the locking finger 29 is part of a control part 30 engaged in a guide piece 31 integral with the plate 4.
- a cam of control 32 extends from the piece 30 substantially perpendicularly to the plate 4.
- the control cam 32 is arranged to cooperate with a locking control fork 33 mounted at the free end of a U-shaped rod 34 of a control cylinder 35.
- the locking fork 33 is guided by grooves 36 formed in the outer wall of the tubular portions 25.
- a spring 37 recalls the locking pieces 30, 30 'against the action of the locking fork 33.
- the jack 35 pushes the locking fork 33 so that the cams 32, 32 'cause the parts 30, 30' to slide in the guide piece 31. It follows that the locking fingers 29, 29 'come out of the notch 28 and the springs 27, 27' cause rotation of the arches and therefore their deployment.
- the control assembly which has just been described has the advantage of being very compact.
- the locking is performed directly between the tube 26 and the tubular portion 25 bearing.
- the prestress spring 27 is arranged in the bearing.
- the plate 4 supports both bearings so that one can use a single cylinder 35, which has the advantage of lowering the cost of the assembly.
- the plate 4 also incorporates the prestressing, locking and triggering functions.
- FIGS. 10a and 10b show a safety device according to the invention, comprising two guide boxes 10, each box being intended to be located on one of the sides of the vehicle, being integral with a part of the element of vehicle structure.
- the two guide housings are interconnected by a transverse connecting element 38 and substantially horizontal, which supports also the plate 4.
- This set comprising the safety device and the connecting element can advantageously be pre-assembled, so as to form a module whose mounting on the structural element in the passenger compartment of the vehicle is easy.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0452207A FR2873072B1 (en) | 2004-07-02 | 2004-09-30 | SAFETY DEVICE IN THE EVENT OF REVERSING A VEHICLE |
FR0452207 | 2004-09-30 | ||
FR0452652 | 2004-11-17 | ||
FR0452652A FR2877901B1 (en) | 2004-11-17 | 2004-11-17 | SAFETY DEVICE IN CASE OF VEHICLE TURNING |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006035156A1 true WO2006035156A1 (en) | 2006-04-06 |
Family
ID=35809713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/002389 WO2006035156A1 (en) | 2004-09-30 | 2005-09-27 | Safety device for use in the event of a vehicle rollover |
Country Status (1)
Country | Link |
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WO (1) | WO2006035156A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991002669A1 (en) * | 1989-08-18 | 1991-03-07 | Alfred Teves Metallwarenfabrik Gmbh & Co. Ohg | Safety device for motor vehicle passengers |
US5094478A (en) * | 1989-08-02 | 1992-03-10 | Bayerische Motoren Werke Ag | Motor vehicle having a rollover bar |
US5224735A (en) * | 1991-03-14 | 1993-07-06 | Mercedes-Benz Ag | Motor vehicle rollover protection device |
EP1028050A2 (en) * | 1999-02-11 | 2000-08-16 | Bayerische Motoren Werke Aktiengesellschaft | Convertible vehicle with soft top and roll bar |
FR2871756A1 (en) | 2004-06-21 | 2005-12-23 | France Design Sa | Safety device for convertible type motor vehicle, has two tarpaulin bows, where each bow has preload spring, activation system and locking finger that are provided on same surface of common central plate |
-
2005
- 2005-09-27 WO PCT/FR2005/002389 patent/WO2006035156A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5094478A (en) * | 1989-08-02 | 1992-03-10 | Bayerische Motoren Werke Ag | Motor vehicle having a rollover bar |
WO1991002669A1 (en) * | 1989-08-18 | 1991-03-07 | Alfred Teves Metallwarenfabrik Gmbh & Co. Ohg | Safety device for motor vehicle passengers |
US5224735A (en) * | 1991-03-14 | 1993-07-06 | Mercedes-Benz Ag | Motor vehicle rollover protection device |
EP1028050A2 (en) * | 1999-02-11 | 2000-08-16 | Bayerische Motoren Werke Aktiengesellschaft | Convertible vehicle with soft top and roll bar |
FR2871756A1 (en) | 2004-06-21 | 2005-12-23 | France Design Sa | Safety device for convertible type motor vehicle, has two tarpaulin bows, where each bow has preload spring, activation system and locking finger that are provided on same surface of common central plate |
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