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EP2675663A1 - Dispositif et procédé pour ajuster une rigidité d'une structure d'absorption d'énergie adaptative - Google Patents

Dispositif et procédé pour ajuster une rigidité d'une structure d'absorption d'énergie adaptative

Info

Publication number
EP2675663A1
EP2675663A1 EP11804694.5A EP11804694A EP2675663A1 EP 2675663 A1 EP2675663 A1 EP 2675663A1 EP 11804694 A EP11804694 A EP 11804694A EP 2675663 A1 EP2675663 A1 EP 2675663A1
Authority
EP
European Patent Office
Prior art keywords
deformation
force
housing
energy absorption
blocking element
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.)
Withdrawn
Application number
EP11804694.5A
Other languages
German (de)
English (en)
Inventor
Thomas Friedrich
Gregory Rewers
Bernd Goetzelmann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2675663A1 publication Critical patent/EP2675663A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
    • F16F7/125—Units with a telescopic-like action as one member moves into, or out of a second member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R2019/262—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means with means to adjust or regulate the amount of energy to be absorbed

Definitions

  • the present invention relates to an apparatus for adjusting a rigidity of an adaptive energy absorption structure for a vehicle, to an adaptive energy absorption structure for a vehicle, and to a method for adjusting a rigidity of an adaptive energy absorption structure for a vehicle.
  • EP 1 792 786 A2 describes a crash box which has a housing-like deformation profile as a folded construction made of sheet metal and a longitudinal carrier-side flange plate.
  • the present invention provides an improved apparatus for adjusting a stiffness of an adaptive energy absorption structure, an improved adaptive energy absorption structure, and an improved method for adjusting a rigidity of an adaptive energy absorption structure according to the main claims.
  • Advantageous Ausges conclusions emerge from the respective subclaims and the following description.
  • the stiffness of the crash boxes is adjusted before or during the collision so that, for example, a higher or lower energy absorption of the front structure takes place.
  • the invention is based on the recognition that when adjusting an adaptive energy absorption structure by means of a unilaterally acting force, a spring element can store the force as a counterforce to the return of the energy absorption structure.
  • the spring element can provide the stored counterforce very quickly.
  • an actuator for the energy absorption structure can be made simpler and cheaper.
  • the counterforce can be provided independently of an energy-intensive external actuation of the spring element to self-recover the energy absorption structure. This enables a fast, robust and cost-effective solution for adapting a crash structure.
  • the present invention provides an apparatus for adjusting a rigidity of an adaptive energy absorbing structure for a vehicle, wherein the energy absorbing structure opposes a housing, at least one disengaging die for deforming a deformation member guided in a direction of action by the disengaging die, and a locking direction movable locking member for supporting the disengaging die
  • said device comprising: a transmission means for transmitting a force to said blocking element to move said blocking element in the direction of action between a first position and at least a second position, said blocking element for adjusting the rigidity of said adaptive Energy absorption structure is formed to support the Ausgurmatrize in the first position so that the deformation element is deformable with a first deformation, and in the second position, the Ausr ckmatrize provided so that the deformation element with a second deformation is deformable; and a spring element which is arranged between the blocking element and the housing in the direction of action in order to counteract the force with a counter force.
  • the rigidity of the energy absorption structure can be adjusted.
  • the stiffness can be used to set how much kinetic energy can be absorbed by the energy absorption structure.
  • Kinetic energy is absorbed by deformation or deformation of the deformation element.
  • a degree of deformation is thus a measure of the stiffness.
  • the deformation element for example a tube, is moved through the die in the event of a collision, as a result of which the deformation element is deformed.
  • the die may, for example, be a funnel-shaped narrowing of a passage cross-section for the deformation element.
  • the die can be designed, for example, as a Ausmaschinematrize, so that the die of a
  • Locking element such as a ring
  • the blocking element can assume at least two positions. In the first position, the blocking element can support the die. In the second position, the blocking element does not support the die, so that the die can be pushed away during the deformation by the deformation element. As a result, the die can break at at least one predetermined breaking point and disengage perpendicular to a direction of movement of the deformation element. Thus, the first deformation can cause a stronger deformation of the deformation element than the second deformation.
  • the energy absorbing structure has a lower rigidity than when the locking member is in the first position.
  • a force can be transmitted to the blocking element via the transmission device.
  • the blocking element can be pushed away or attracted by the transmission device.
  • the blocking element can be pushed away or attracted by a spring element.
  • the spring element can thus counteract the transmission device.
  • the spring element can exert no counterforce on the blocking element when the blocking element is in the first position.
  • the spring element can exert a counterforce on the blocking element when the blocking element is in the second position.
  • the device may include an actuator that may be supported against the housing.
  • the actuator may be configured to provide the force.
  • the actuator may be an electric actuator, such as an electric motor.
  • the actuator may be self-locking. This allows the actuator to maintain a set state as long as no other information is transmitted to the actuator.
  • the actuator can frictionally connected to an output with the
  • the actuator may have a switchable backstop.
  • the actuator may be configured to provide the force in a first condition of the backstop, and not to provide the force in a second condition of the backstop.
  • a switchable backstop may be understood to mean a device which can be locked on one side and which permits movement in a drive direction and prevents movement counter to the drive direction, wherein the movement against the drive direction can be released in response to a signal or actuation.
  • a switchable backstop be a switchable clamp roller freewheel or a switchable sprag freewheel. The backstop can make the actuator self-locking.
  • the actuator may include a shiftable clutch that in a first position couples a drive portion of the actuator to the output, and in a second position disengages the drive portion from the output.
  • the transmission device can be switched powerless to move the locking element between the first position and the second position.
  • a coupling can decouple an inertia of the drive part directed against movement from the transmission element in order to be able to execute the movement more quickly.
  • the device may comprise a secondary actuator.
  • the secondary actuator can be designed to operate in a first switching state, the blocking element to prevent movement, and release the movement of the blocking element in a second switching state.
  • a secondary actuator may be understood to mean a device for holding or releasing the blocking element.
  • a secondary actuator may be a locking element which, in the first switching state, prevents the blocking element from moving and, in the second switching state, allows the movement.
  • the secondary actuator may block or release the spring element.
  • the device may comprise a plurality of transmission devices and additionally or alternatively a plurality of spring elements.
  • the spring elements can be distributed uniformly over a circumference of the Ausschmatrize.
  • the blocking element can be supported evenly over an overall extent of the blocking element of the opposing force.
  • the force can be evenly distributed to the blocking element. If the device has the same number of spring elements, such as transmission devices, asymmetric loads on the blocking element can be avoided. As a result, tilting of the blocking element can be prevented, and high operational reliability can be achieved.
  • the blocking element can be movable between the first position and the second position and at least one further position, wherein the blocking element is designed to support the disengaging die in the further position such that the deformation element is deformable with a further deformation.
  • a further position can be understood as meaning a position between the first position and the second position.
  • the blocking element can be moved into the further position by the force transmitted by the transmission device.
  • a further deformation may be understood to mean a deformation that is smaller than in the first deformation and stronger than in the second deformation. Due to the adjustment possibility at least one With a further deformation strength, the rigidity of the energy absorption structure can be better adapted to the actual impact energy.
  • the blocking body may have at least one rolling point.
  • the transfer means may comprise a trajectory for supporting the rolling point, the trajectory having a first extreme point adapted to support the rolling point in the first position, and the trajectory having a second extreme point formed around the pitch point in the second Support the position.
  • the transmission device may be designed to carry out a relative movement to the pitch point in order to exert a unilaterally acting pressure force on the blocking element.
  • a pitch point can be understood to mean a contact point or a contact point between the blocking body and the transmission device.
  • the force can be transmitted to move to the blocking element.
  • the Wälz Vietnamese can as
  • the rolling element may have means for reducing the friction, such as a coating or a roller.
  • a trajectory can form a cam gear with the rolling point by the rolling point is pressed by the spring element on the trajectory and the trajectory can be moved relative to the pitch point.
  • elevations of the trajectory of the pitch point can be deflected perpendicular to a direction of movement of the transmission device or trajectory.
  • the trajectory can be divided into several cams or eccentrics. The relative movement can take place perpendicular to the Wrkraum or rotating about the Wrkraum.
  • the blocking body can be moved particularly easily in the direction of action and the rigidity of the energy absorption structure can be adjusted.
  • the trajectory may have at least one flat point, which is designed to support the rolling point in the further position.
  • a flat area can be understood as meaning a region of the trajectory which, during a part of the relative movement, does not cause a displacement of the pitch point in the direction of rotation.
  • the rigidity of the energy absorption structure can be adjusted in predetermined levels.
  • the rolling point can rest on the flat position without holding force of the transmission element and keep the set stiffness set.
  • the transmission device may be a cable for transmitting a unidirectional pulling force.
  • the actuator may have a winding device for winding up the rope. Under a rope can be understood a transmission means for a tensile force along a main direction of extension of the rope.
  • the rope may also be a cable or a cord.
  • a winding device may be a device for rolling up the rope.
  • the winding device may be a drum or a spindle.
  • the tensile force can be transmitted from a remote actuator to the blocking element.
  • the rope can also be deflected via deflection points, such as deflection rollers in the main direction of extension.
  • deflection points such as deflection rollers in the main direction of extension.
  • Several ropes can be co-wound on a take-up device to transfer the force to several ropes. Through the rope, the force can also be transmitted from a remote actuator to the blocking element.
  • the invention also includes an adaptive energy absorption structure, comprising: a housing; at least one release die arranged in the housing for deforming a deformation element when the deformation element is guided in a direction of action through the release die; a movable in the WRKraum locking member for supporting the Ausschmatrize relative to the housing; and an apparatus for adjusting a stiffness of an adaptive energy absorption structure according to the inventive approach.
  • the adaptive energy absorption structure can be used for example as a crash box for a vehicle.
  • the direction of rotation may correspond to a direction of impact of the vehicle with an obstacle.
  • the effective direction can be aligned parallel to a vehicle longitudinal direction.
  • the adaptive energy absorption structure can also be installed, for example, in the middle or rear region of the vehicle front structure. In this case, a part of the longitudinal member has different levels of force.
  • the invention also includes a method for adjusting a
  • the energy absorption structure comprises a housing, at least one Ausgurmatrize for deforming a guided in the direction of action by the Ausgurmatrize deformation element, and a movable in the direction of action movable blocking element for supporting the Ausschreibmatrize relative to the housing, wherein the
  • Energy absorption structure is formed to support the Ausschreibmatrize in the first position so that the deformation element is deformable with a first deformation, and the blocking element in the second position, the Ausschreibmatrize support so that the deformation element is deformable with a second deformation;
  • FIG. 1 is a block diagram of an apparatus for adjusting a stiffness of an adaptive energy absorption structure according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for adjusting a stiffness of an adaptive energy absorption structure according to an embodiment of the present invention
  • FIG. Fig. 3 is a schematic diagram of an embodiment of the present invention with a locked secondary actuator
  • Fig. 4 is a schematic diagram of an embodiment of the present invention having an unlocked secondary actuator
  • Fig. 5 is an illustration of an adaptive energy absorption structure in a
  • FIG. 6 is an illustration of an adaptive energy absorption structure in a low stiffness setting in accordance with an embodiment of the present invention
  • 7 is an illustration of a release die with predetermined breaking points for use in an adaptive energy absorption structure according to an embodiment of the present invention
  • FIG. 8 is an illustration of an adaptive energy absorption structure having a stiffness adjusting device of the adaptive energy absorption structure according to an embodiment of the present invention
  • FIG. 9 is a sectional view of an adaptive energy absorption structure having a stiffness adjusting device of the adaptive energy absorption structure according to an embodiment of the present invention.
  • FIG. 10 is a detail of a device for adjusting the rigidity of an adaptive energy absorption structure according to an exemplary embodiment of the present invention with a path curve adjustment;
  • FIG. 1 shows a section of a device for adjusting the rigidity of an adaptive energy absorption structure according to an embodiment of the present invention with a path adjustment with a further position
  • 12 is an indicated spatial illustration of a path curve adjustment from a device for adjusting a stiffness of an adaptive energy absorption structure according to an exemplary embodiment of the present invention
  • FIG. 13 is an illustration of a device for adjusting a stiffness of an adaptive energy absorption structure according to an embodiment of the present invention with an eccentric adjustment
  • FIG. 14 is another illustration of the device for adjusting the stiffness of the adaptive energy absorption structure according to an embodiment of the present invention with eccentric adjustment.
  • FIG. 1 shows a block diagram of an adaptive energy absorption structure with a device for adjusting a stiffness of the adaptive energy absorption structure according to an embodiment of the present invention.
  • the energy absorption structure has a housing 100 and a deformation element 102.
  • the deformation element 102 is moved relative to the housing in an impact, which is to be absorbed by the energy absorption structure, in a direction of action that is parallel to a longitudinal axis of the deformation element 102.
  • a die 104 is arranged, which is designed to deform the deformation element 102 during the movement in the direction of action.
  • the die 104 is supported by a blocking element 106 relative to the housing 100.
  • the locking member 106 is movably disposed and can be reciprocated by the rigidity adjusting device between different positions. Depending on the position, the die is supported to a different extent by the blocking element 106 and can accordingly deform the deformation element 102 to different degrees.
  • the device for adjusting the rigidity comprises a transmission device 108 and a spring element 1 10 on.
  • the transmission device 108 is designed to transmit a force for moving the blocking element 106 onto the blocking element 106.
  • the spring element 110 is configured to exert a force on the blocking element 106 which is opposite to that of the force exerted by the transmission device 108.
  • the blocking element 106 can be biased. If the blocking element 106 is held in such a prestressed position, the blocking element can then be moved quickly into another position by the spring force of the spring element, for example in response to a detected or predicted impact.
  • FIG. 2 shows a flow chart of a method for adjusting a stiffness of an adaptive energy absorption structure according to an embodiment of the present invention.
  • the method includes a step 202 of transmitting a force to a blocking element of the adaptive energy absorption structure. Furthermore, the method comprises a step 204 of providing a counterforce by a spring element.
  • the blocking element is moved by the force and thus changed in its position. Depending on the position, the blocking element supports a release die of the adaptive energy absorption structure to different degrees, so that the release die can deform a deformation element guided by the release die differently.
  • FIG. 3 shows a schematic diagram of a section of an adaptive energy absorption structure, according to an exemplary embodiment of the present invention.
  • the adaptive energy absorption structure has a housing 100, which as Ab ⁇
  • the energy absorption structure has a blocking element 106, which is embodied here as a plate. Between the housing 100 and the blocking element 106, a spring 110 is arranged. Also arranged on the housing 100 is an actuator 308, here an electric motor. The actuator actuates a winding device 310, here a spindle. One end of a cable 312 or a cable is wound on the reel 310. The other end of the cable 312 is connected to the blocking element 106. The cable 312 transmits a pulling force to move the locking member 106 from the actuator 308 to the locking member 106. As a result, the locking member 106 is moved towards the housing 100 and the spring 110 between the housing 100 and the locking member
  • the triggering device is four-barred.
  • FIG. 4 shows the section of an adaptive energy absorption structure shown in FIG. 3 at a later time t1, in which the trigger device 314 is unlocked.
  • the secondary actuator 314 has removed the blockage of the blocking element 106 by moving the secondary actuator 314 away from the blocking element 106, as indicated by an arrow, transversely to a direction of movement of the blocking element 106.
  • the blocking element 106 has been moved away from the housing 100 by a predetermined distance 316 x (t).
  • the cable 312 has been unwound slightly from the winding device 310.
  • the actuator 308 may either have been disconnected or the actuator 308 has actively or passively carried the unwinding.
  • a fast actuator device is used.
  • the actuator device consists of a spring 110, which acts on a mechanical component 106 of the adaptive energy absorption structure and thus realizes the change in stiffness.
  • This spring 1 10 is biased depending on the nature of train or pressure and thus stores the energy that is necessary to the
  • an actuator 308 e.g. an electric motor is provided which guarantees the reversibility.
  • the spring 110 is biased by the actuator 308.
  • the actuator 308 can return the spring 110 and thus also the mechanical adaptation element 106 back to the original position.
  • a trigger device 314 is provided, which unlocks the prestressed spring 110 and thus allows the adaptation.
  • the triggering device 314 can be formed separately, for example as a secondary actuator for a mechanical see blocking of the spring, which is then removed.
  • a triggering device may be integrated directly in the actuator 308, for example in the form of a gear release in the electric motor, or a direction of rotation of the electric motor for the bias and the other direction of rotation for unlocking.
  • the spring 110 is a standard part, which is manufactured in all variations in mass production and is therefore favorable.
  • the demands on the actuator 308 in terms of dynamics are low.
  • For the switching back or the retraction of the spring 110 are several hundred milliseconds to a few seconds available. Thereby, e.g. an electric motor are small in size and require little power. Electric motors are inexpensive and are produced in large quantities.
  • the reversibility is to be regarded as one of the main advantages.
  • the triggering algorithm can be made very sensitive to effect a quick adjustment decision. A risk of possible false triggers can be accepted through the reversibility. With false triggering here an undesirable adjustment of the actuator is called, which can be triggered for example by a pothole in the road, or a slight collision with a garbage can or a garage door. Since the system is reversible, the actuator returns to its original jump position after the false trip. The driver does not notice.
  • the spring principle can be applied to various mechanical working principles, such as peeling, scraping, cutting, tapering, widening, or everting, so in all crash boxes where a mechanical part for adapting the rigidity is needed.
  • mechanical working principles such as peeling, scraping, cutting, tapering, widening, or everting
  • FIG. 5 is an illustration of an adaptive energy absorption structure in a high-rigidity setting according to an embodiment of the present invention.
  • 6 is a diagram of the adaptive energy absorption structure in a low-rigidity setting according to an embodiment of the present invention.
  • Fig. 7 shows a representation of a Aus Wegmatrize with Predetermined breaking points for use in an adaptive energy absorption structure according to an embodiment of the present invention.
  • a deformation element 102 here a tube with a frusto-conical taper at a lower end, is guided in a collar of a housing of an adaptive energy absorption structure.
  • a stationary die 504 is disposed within the housing, which deforms the deformation element 102 in the event of a collision with a low plastic deformation when the deformation element 102 is pushed in a direction of impact by the fixed die 504.
  • a breakable Ausgurmatrize 104 is arranged in the housing.
  • Ring as blocking element 106 or locking ring is set as in Fig. 5 by default so that the crash box is always set to the highest possible stiffness.
  • the ring In the case of a low-speed crash, as shown in Fig. 6, the ring
  • the actuator 308 ensures the correct ring position or ring movement.
  • FIGS. 8 and 9 Another possible implementation of the approach presented here on a taper-based adaptive crash structure is shown in FIGS. 8 and 9.
  • FIG. 8 is an illustration of an adaptive energy absorption structure having an apparatus for adjusting a stiffness of the adaptive energy absorption structure according to an embodiment of the present invention.
  • FIG. 9 is a cross-sectional view of the adaptive energy absorption structure including the adaptive energy absorption structure rigidity adjusting apparatus of FIG. 8.
  • the bias of the adaptive crash structure shown in FIG. 8 is held by a latch unit.
  • This can be realized for example as a clamping roller freewheel.
  • a locking ring 106 is connected via four cables 312 with an actuator 308.
  • the actuator 308 has a winding device 310 in the form of a spindle for the cables 312.
  • the cables 312 are on the locking ring
  • the cables 312 may transmit a force to move the locking ring 106 from the actuator 308 to the locking ring 106 when the winding device 310 is rotated in a direction of rotation 902.
  • Four compression springs 110 are arranged at the four fastening points of the cables 312 between a housing 100 of the crash structure and the locking ring 106.
  • the compression springs 110 are compressed and preloaded by the force transmitted through the cables.
  • the springs 110 act against the force transmitted by the cables 312.
  • spring energy is stored in the tensioned state, which is used to move the locking ring 106 in the event of a stiffness change.
  • Figures 10, 11 and 12 show embodiments of the present invention in which the bias of the springs 110 is performed via a trajectory.
  • 10 shows a detail of a device for adjusting a stiffness of an adaptive energy absorption structure according to an exemplary embodiment of the present invention with a path curve adjustment.
  • 1 1 shows a detail of a device for adjusting a stiffness of an adaptive energy absorption structure according to an embodiment of the present invention with a path curve adjustment with a further position.
  • 12 shows an indicated spatial representation of a path curve adjustment from a device for adjusting a stiffness of an adaptive energy absorption structure according to an embodiment of the present invention.
  • a geared ring 1002 shown in Figures 10, 11 and 12 is rotated by an electric motor, either directly or via a gear.
  • the ring 1002 has a trajectory 1004.
  • On the ring 1002 is another, secured against rotation ring 1006 with bolts or rollers 1008 on the
  • Trajectory 1004 rest.
  • the further ring 1006 is pressed by one or more springs 110, so that the ring 1006 is translationally moved during a rotation of the first ring 1002.
  • the spring / s 110 clamp between the locking element 1006 and the housing 100.
  • the web 1004 has a trough, so that the motor 110 no longer load after tensioning the springs has to hold and can remain de-energized. So in this position, the Aus Wegmatrize supported.
  • this position of the lock member 1006 is a "hard” setting, and if the adaptive crash structure is to be smoothed, the motor slightly rotates the first ring 1002 so that the biased spring (s) 110 retracts the further anti-rotation ring 1006 This movement is ensured by the spring force and can be assisted by the motor in order to additionally gain dynamics.
  • the adjustment of the adaptive crash structure in the direction of "soft” can also be stepped by further depressions in the trajectory 1004, as shown in FIG 1 1, be realized, so that intermediate stages the stiffness of this adaptive crash structure can be adjusted.
  • the assembly with the rings can be arranged concentrically to the adaptive crash structure or distributed as multiple identical assemblies on the circumference of the crash structure. In the latter arrangement, this can be driven by a common motor via a transfer case or by multiple motors
  • Figures 13 and 14 show an embodiment of the present invention, according to which a bias of the springs 110 is performed by means of a plurality of eccentrics 1302.
  • the adjustment can also be made via a single eccentric.
  • the eccentric may be configured to provide a type of detent function with spring 110 biased between the ring 106 and the housing 100, which allows the system to assume two stable states for the high and low stiffness of the adaptive crash structure.
  • a significant advantage of this embodiment is that both positions of the ring 106 can be kept de-energized. This means that both the hard and soft state of the adaptive crash box can be kept without electrical power. This means that when a vehicle is parked, that is, when it is in the "off" state with or without occupants, the vehicle manufacturer can freely decide whether to set its adaptive crash box to "hard.” This may result in high repair costs for low-speed crashes the adaptive energy absorption structure is set to "soft", possibly resulting in a high risk of injury to occupants.
  • Predictive sensors such as radar, light and ultrasound are suitable, but also sensors such as acceleration, pressure or temperature sensors are suitable for this purpose.
  • crash sensors such as acceleration and / or pressure sensors are very suitable.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)

Abstract

L'invention concerne un dispositif pour ajuster une rigidité d'une structure d'absorption d'énergie adaptative. La structure d'absorption d'énergie présente un boîtier (100), au moins une matrice de débrayage (104) pour déformer un élément de déformation guidé dans une direction d'action par la matrice de débrayage ainsi qu'un élément de blocage (106) mobile dans la direction d'action. Le dispositif présente un appareil de transmission (312) pour transmettre sur l'élément de blocage une force pour déplacer celui-ci dans la direction d'action entre une première position et au moins une deuxième position. L'élément de blocage est conçu pour supporter la matrice de débrayage dans la première position de telle manière que l'élément de déformation puisse être déformé par une première déformation et pour la supporter dans la deuxième position de telle manière que l'élément de déformation puisse être déformé par une deuxième déformation. Le dispositif présente également un élément ressort (110) qui est disposé entre l'élément de blocage et le boîtier dans la direction d'action, l'élément ressort étant conçu pour s'opposer à la force transmise par une force antagoniste.
EP11804694.5A 2011-02-17 2011-12-22 Dispositif et procédé pour ajuster une rigidité d'une structure d'absorption d'énergie adaptative Withdrawn EP2675663A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110004294 DE102011004294A1 (de) 2011-02-17 2011-02-17 Vorrichtung und Verfahren zum Einstellen einer Steifigkeit einer adaptiven Energieabsorptionsstruktur
PCT/EP2011/073817 WO2012110151A1 (fr) 2011-02-17 2011-12-22 Dispositif et procédé pour ajuster une rigidité d'une structure d'absorption d'énergie adaptative

Publications (1)

Publication Number Publication Date
EP2675663A1 true EP2675663A1 (fr) 2013-12-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11804694.5A Withdrawn EP2675663A1 (fr) 2011-02-17 2011-12-22 Dispositif et procédé pour ajuster une rigidité d'une structure d'absorption d'énergie adaptative

Country Status (4)

Country Link
EP (1) EP2675663A1 (fr)
CN (1) CN103534144A (fr)
DE (1) DE102011004294A1 (fr)
WO (1) WO2012110151A1 (fr)

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DE102013202194A1 (de) * 2012-11-23 2014-05-28 Robert Bosch Gmbh Vorrichtung mit einstellbarer Steifigkeit zum Aufnehmen einer Aufprallenergie und Verfahren zum Einstellen einer Steifigkeit einer Vorrichtung mit einstellbarer Steifigkeit
DE102012221429A1 (de) * 2012-11-23 2014-05-28 Robert Bosch Gmbh Vorrichtung mit einstellbarer Steifigkeit zum Aufnehmen einer Aufprallenergie und Verfahren zum Einstellen einer Steifigkeit einer Vorrichtung mit einstellbarer Steifigkeit
ES2730745T3 (es) * 2015-11-30 2019-11-12 Dellner Dampers Ab Dispositivo y método de absorción de energía
CN106347404B (zh) * 2016-09-28 2018-04-13 中南大学 一种轨道车辆用碰撞吸能装置

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