EP1562797A1 - Vorrichtung zum schutz von personen bei einem frontalaufprall auf ein kraftfahrzeug - Google Patents
Vorrichtung zum schutz von personen bei einem frontalaufprall auf ein kraftfahrzeugInfo
- Publication number
- EP1562797A1 EP1562797A1 EP04714303A EP04714303A EP1562797A1 EP 1562797 A1 EP1562797 A1 EP 1562797A1 EP 04714303 A EP04714303 A EP 04714303A EP 04714303 A EP04714303 A EP 04714303A EP 1562797 A1 EP1562797 A1 EP 1562797A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- lifting element
- toothed
- pawl
- holding
- 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- Withdrawn
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
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R21/38—Protecting non-occupants of a vehicle, e.g. pedestrians using means for lifting bonnets
Definitions
- the invention relates to a device according to the preamble of claim 1.
- One solution principle is to defuse the aforementioned hard transition area to the windshield, ie to make it more flexible, for example by a sensor-controlled inflatable airbag or in accordance with DE 28 14 107 A in connection with DE 28 41 315 by means of a device actuated by means of an impact sensor Adjustment of the front hood from a rest position in a, in contrast, raised, flexible impact position, ie a so-called “active front hood”.
- DE 197 12961 A1 likewise shows impact protection by means of a front hood which can be flexibly set up in the event of a collision and which is rotatably attached on the windshield side via a hinge arrangement.
- This hinge arrangement is fastened to the body of the front end by means of a pivotably or displaceably mounted hinge bracket in such a way that in the event of a collision of the vehicle with a person, the front hood by means of a set-up element engaging the hinge bracket with an energy-storing device, e.g. a spring energy accumulator, pivoted or shifted upwards, i.e. can be raised.
- an energy-storing device e.g. a spring energy accumulator
- the three known embodiments have the following disadvantages.
- the invention has for its object to provide the above-mentioned device for protecting people in the event of a frontal impact on a motor vehicle by actively installing its front cover by means of a positioning element which has a lifting element and a sensor-controlled spring drive, this positioning element from its basic structure that this can be used both in the hinge area and in the hood lock area, with a position-defined positioning movement of the lifting element by a rigid coupling of the spring drive to the lifting element.
- the lifting element which is linear, can be set up and guided in a housing (1) which can be attached to the body and at least one side has a toothed strip for a meshing active engagement with at least one associated rotating part which is rotatably mounted in the housing and is preloaded by means of at least one spiral spring as spring drive and which has a toothed ring at least along part of its circumference.
- the intermeshing active engagement of the rotating part which can be driven by the spring drive and has a toothed ring with the toothed strip on the lifting element, provides a rigid coupling of the spring drive to the lifting element, which enables a position-defined movement of the lifting element.
- This also applies to the retracting movement in the event of a collision with the bonnet when the lifting element is up, whereby the damping is also higher than with a free-swinging spring.
- a relatively simple reversal of an erected lifting element is possible by turning the gear backwards using a simple, conventional tool or with the aid of the front cover as a lever.
- the construction of the set-up element according to the invention also allows a very compact construction.
- the device is expediently designed in accordance with a development of the invention that a rectangular base plate is provided for the hinge bracket, which is firmly connected at its two narrow ends with a linear support column as a lifting element, which are linearly received in complementary guide shells of the housing, and which each have a toothed strip for the facing sides intermeshing active intervention with the has associated rotating part with a ring gear, designed as a gearwheel, the two gearwheels being arranged in a mutually intermeshing manner, and that the sensor-controlled holding device is a holding pawl which is actuatable in the sense of holding and can be actuated by a sensor-controlled actuator and is rotatably articulated in the housing for releasable, holding engagement with one of the two toothed
- the double, linear guidance of the mounting plate over the two mounting columns ensures a uniform and therefore safe installation.
- the kinematically "rigid" connection of the two support columns via the two gear wheels also provides a rigid coupling of the support stroke, i.e. the system "support plate with support columns” can advantageously not tilt in the guide shells of the housing and adversely affect the installation movement.
- the set-up element expediently has only one support column as a lifting element on which the lock carrier is attached, because the device has a more cylindrical character. Furthermore, the rotating part with a ring gear is designed as a toothed segment.
- FIG. 2 in a longitudinal sectional view analogous to Fig. 1
- FIG. 3 shows the device according to FIG. 1 in a schematic isometric illustration with the rear housing wall broken away, with a view of the rear side thereof,
- FIG. 4 is a sectional view of the device according to FIG. 1 in the installed state
- Fig. 5 shows the device in an isometric view
- Fig. 6 is a cross-sectional view along the section line A - A in
- Fig. 7 is a longitudinal sectional view along the section line B - B in
- FIG. 8 in a schematic overall representation
- Fig. 10 is a schematic isometric view of the inner structure of the mounting element according to the second Embodiment with only one lifting element held laterally in the housing and a toothed segment as a “drive pinion”,
- FIG. 11 is an exploded view of essential components of the pinion according to FIG. 10 including the reversing part,
- FIG. 12 is a plan view with partial section of the mounting element according to FIG. 10,
- Fig. 13 in five parts A-E each in a schematic
- Fig. 14 in four parts A-D a reversing option for the extended lifting element by means of a bow pull with the aid of the front hood as a lever.
- the first embodiment of the device 100 according to the invention for protecting people in the event of a frontal impact on a motor vehicle is based on the principle that, in the event of a collision with the person, the front bonnet of the motor vehicle, including its hinge arrangement, in the stop area is offset by a predetermined stroke in the stop area the body of the front end is set up.
- the device 100 initially has a housing 1, which contains the sensor-controlled components for the installation of the front hood, and which on the body of the front end in the area of the hinge arrangements, preferably on the support bracket of the fender, is attached. Such a device is attached to both sides of the front end.
- a mounting plate 2 is accommodated in the housing 1, as will be explained in more detail later.
- This base plate 2 is designed as a U-profile open at the top, the side legs of the profile being chamfered in the direction of travel (position 2a).
- the mounting plate also has an eccentric aligned opening 3 on the legs for axially secured reception of a bolt 200, about which a hinge bracket 300 is pivoted (FIG. 8).
- the respective hinge arrangement 400 for the front hood 500 is fastened on the body side on this hinge support 300, which is preferably designed as a U-profile which is open at the bottom.
- the hinge bracket 300 Due to the front bevel 2 a of the base plate 2, which gives space for a pivoting movement, and the pivotable articulation of the hinge bracket 300 against the direction of travel, the hinge bracket 300 is designed as a rocker, i.e. when moving out it can compensate for the movement in the horizontal, i.e. incline in the X direction, in the direction of travel.
- the hinge bracket can also be attached to the base plate without compensatory measures.
- the hinge support 300 is set up in the same way and likewise the hinge arrangement 400 with the rear part of the front hood 500.
- the construction for extending the stand plate 2 has two spaced stand columns 4, 5 as a lifting element, each of which has a blind threaded hole 4 a, 5 a on the head side (see FIG. 6) and which are each fastened to the stand plate 2 by means of a screw 6.
- These support columns are guided in complementary guide shells 7, 8 in the housing 1, as shown in particular in FIG. 5.
- a rack 9, 10 is formed, which can be formed by an attached separate rack or, alternatively, can be formed in one piece directly in the erection columns 4, 5.
- each gear 11, 12 is assigned a spiral spring 13, 14, which is clamped at one end to the associated shaft 11 a or 12 a and at the other end to an associated stop 15 or attached in the housing 1 16 fits positively.
- spiral springs are tensioned when, due to a downward movement of the mounting plate and the mounting columns 4, 5, the gear 12 on the right in FIGS. 1 and 2 rotates clockwise and gear 11 rotates counterclockwise.
- the coil springs 13, 14 are in the pretensioned state with retracted support columns 4, 5, i.e. in the basic position.
- a holding pawl 17 is provided which is rotatably articulated on a shaft 17 a in the housing 1.
- This pawl 17 has a lower lever arm 17 b for a locking active engagement with the toothed rack 10 of the support column 5 and an upper lever arm 17 c for an active engagement of a sensor-controlled actuator 18 of a conventional type, whether in the form of a trigger electromagnet or a pyrotechnic trigger.
- This actuator 18 is suitably fixed in place in the housing 1, as indicated by the mounting holes.
- an associated compression spring 19 Fig. 3
- the upper pawl lever arm 17 c against preloaded the actuator.
- the other end of the compression spring 19 is received in a guide pin 20 a of a shaped piece 20, which is secured in the housing 1 by means of a bolt 21.
- the device 100 also has a locking pawl 22, which is pivoted on a shaft 23 in the housing 1.
- This has an arm 22 a with a guide pin 22 b for a second compression spring 25, which is also held at its other end in a guide pin 20 b in the fitting 20 (Fig. 7).
- the locking pawl 22 also has an extension 22 c for an active engagement with the toothed rack 9 and a control cam 22 d for a leading active engagement with a link 24, which in addition to the.
- Rack 9 axially extending in the same way, is attached to the support column 4.
- This slide guide which is essentially linear, has an opening 24 a in the lower region and a gently rising hump 24 b above this opening. The function of this locking pawl and the link guide will be described in more detail later on using the description of the reversing process.
- the shaft 12 a of the gear 12 has a hexagon 12 b penetrating the housing 1 for an active engagement with a tool, as will also be explained in more detail with reference to the description of the reversing process.
- the guide column 5 or the associated toothed rack 10 has a stop 10 a for limiting the installation path of the installation columns.
- the first embodiment of the device according to the invention works as follows: Activation of the front hood
- the actuator 18 If the actuator 18 is triggered in the basic position according to FIGS. 1-3, be it sensor-controlled in the event of an (impending) collision or for test purposes, then it ejects a mechanical link which in turn presses the upper arm 17 c of the holding pawl 17 upward pushes the force of the compression spring 19. As a result, the holding pawl is pivoted and the lower lever arm 17 b is withdrawn from the toothed rack 10. The bracket is thus free and the spiral springs 13, 14 can rotate the gears 11, 12, which, by combing with the toothed racks 9, 10, set up both erection columns in the ms range, the stop 10 a limiting the erection stroke.
- the link guide 24 ensures that the locking pawl 22 does not come into operative engagement with the toothed rack 9 during the set-up movement, the protuberant projection 24 b giving the control cam 22 d an outward impulse, so that it only comes back onto the link path due to its inertia when the opening 24 has slipped past.
- the system set up is shown in FIGS. 4 and 5.
- the front hood 500 is around one in the area on the windshield side predetermined stroke, for example 55 mm, set up.
- a hand crank is plugged onto the hexagon 12 b of the gear shaft 12 a and the gear 12 is then rotated counterclockwise as seen in FIG. 5, so that the Stand columns 4, 5 with the stand plate 2 turned down. become, i.e. the system is reversed.
- the reversing cannot be carried out in one step, because a device 100 is attached to both sides of the front end that cannot be reversed by one person at the same time.
- the front hood would tilt if one device were to be completely reversed first.
- the erecting columns 4, 5 with their racks 9, 10 are retracted until the control cam 22 d engages in the opening 24 a of the link guide 24, so that the compression spring 25 the locking pawl 22 with its tooth-shaped extension 22 c in the rack 9 presses.
- the system can no longer extend automatically and the set-up device on the other side of the carriage can then be reversed by the entire stroke.
- the second stroke is then moved from the intermediate position into the basic position in the first device.
- the hand strength which acts on the crank in connection with a corresponding tooth geometry result in a force which acts as a reaction force on the locking pawl 22 and releases it from the locking with the toothed rack 9.
- the opening pawl With the opening pawl, the control cam 22 d is pressed out of the opening 24 a of the control link, whereby the lifting movement is released for the second stage.
- the erection device designed according to the invention is also suitable for erecting the front hood 500 in the region of the hood lock 600.
- FIG. 9 shows a schematic partial view of the front of a passenger car, the front hood 500 of which is positioned in the protective position in the area of the hood lock 600 by means of the device 100 for protecting people in the event of a frontal impact on the front hood in the area of the hood lock 600.
- This device 100 the set-up element, has a housing 1 which is attached to the body 700 of the front end of the vehicle and has a linear lifting element 4 in the housing 1 on which the hood lock 600 is attached on the head side, possibly via a lock carrier, which is extended together with the lifting element 4 'in the event of a collision without the lock having to be unlocked.
- FIG. 9 shows the design of a motor vehicle with an actively deployable front hood 500, in which only the hood lock 600 can be raised in a sensor-controlled manner.
- the hinges of the front hood can also be set up, e.g. by means of the set-up element according to FIGS. 1 to 7.
- the exemplary embodiment according to FIGS. 10 ff can in principle also be used for lifting the front hood in the hinge area.
- Figures 10, 11 and 12 show in different views or representations the constructive, advantageously very compact structure of the second embodiment of the erection element according to the invention.
- the lifting element 4' is held in the form of an erection column and can be erected linearly.
- the guidance of this lifting element is not shown in detail.
- the hood lock to be set up is preferably attached to this lifting element, possibly indirectly via a lock carrier.
- This lifting element has a toothed strip 9 'on the side facing the housing interior, which can be formed by a separate component or by a one-piece design on the lifting element.
- a gearwheel-like toothed segment 11' is also rotatably mounted by means of a shaft 11'a, which has a toothed ring 11'b on a part of the circular arc-shaped circumference facing the lifting element 4 ', which is preferably formed in one piece on the toothed segment 11' and which combs with the rack 9 '.
- the toothed segment 11 ' also has a slot-like stop link 11'c, which is penetrated by a stop bolt 1'a fastened to the housing 1'. This stop bolt 1'a in connection with the Stop link 11'c limit the lifting stroke of the lifting element 4 '.
- the shaft 11'a is also encompassed by a spiral spring 13 'which is connected with its inner end 13'a in a rotationally fixed manner to the shaft 11'a and with its outer end 13'b bears against a stop 1'b fixed to the housing.
- the non-rotatable connection can e.g. by the fact that the inner end of the spiral spring is inserted into a slot in the shaft, or by the fact that, as shown, the inner end has a square shape and the shaft 11 'a, which is also square in this area, has a positive fit. This square region continues, as can be seen in FIG. 12, into the interior of the toothed segment 11 'and there also ensures a rotationally fixed connection of the toothed segment to the shaft 11'a.
- the arrangement is such that, in the basic state of the system, the spiral spring 13 'is pretensioned, so that the toothed segment 11' tries to set up the lifting element 4 'via the pinion.
- This set-up is prevented by a sensor-controlled triggerable holding device, which consists of a pin-ejecting actuator 18, which can be activated by a sensor (a trigger magnet or a pyrotechnic trigger element), and a known double-pawl pin 25, consisting of a trigger pawl 25a rotatably mounted in the housing 1 'and also one rotatably mounted holding pawl 25b, both of which are prestressed, and a holding pin 25c at the lower end of the lifting element 4 ', which is detachably gripped by the holding pawl 25b.
- the actuator 18 If, in the event of an impending collision, the actuator 18 is triggered in a sensor-controlled manner, it ejects a pin 18 a, which in turn rotates the release pawl 25a in such a way that it comes out of operative engagement with the holding pawl 25b, which is then also rotated under the action of the assigned prestressing spring and thereby releases the retaining bolt 25c.
- This allows the coil spring 13 ' Rotate toothed segment 11 ', which in turn sets up the lifting element 4' via the pinion. This raising movement is in Fig.
- reversing by means of a Bowden cable 26 is shown.
- the Bowden cable engages with its hooked nipple 26b on the pull cable 26a on the lever arm 27a of a pawl 27 which has a hollow shaft 27b which is pushed onto the shaft 11'a.
- a stop lever 27c and a tension spring lever 27d are also fixedly attached to the hollow shaft 27b.
- a detent opening 27e is also formed.
- an upper stop bolt 11'd and a lower stop bolt 11'e, as well as a rotary active part 28 with a latching lug 28a are attached to the gear segment 11 'for an active connection with the switching pawl 27.
- a tension spring 29 which is attached with its other end to the housing 1 '.
- the other end of the Bowden cable 26 is attached to the front hood or the door of the car, which are each used as a reversing aid, as is described in particular in the older German patent application 10350533.4-42, the disclosure of which is made by reference to the disclosure content of the present application becomes.
- FIG. 14 shows the set-up element 100, on the lifting element 4 'of which the hood lock 600 is attached, which receives the closing element 800 of the front hood 500.
- the Bowden cable 26 is hooked in, which is hooked at its other end to a lever system 900 which can be actuated by the front hood.
- the parts of the figures B, C and D show different states of the lever system 900 during reversing.
- the lever system 900 has a lever arm 901, which is articulated on a bearing block 902 attached to the body of the front car in the hinge area of the front pigeon. At the free end, it has a roller 903, which is preferably made of plastic, for gentle active engagement with the front hood 500.
- an active part 904 which converts the pivoting movement of the lever arm into a linear pulling movement, which is likewise pivoted on the bearing block 902, and on the free end of which the pulling cable 26a of the Bowden cable 26 is suspended by means of the nipple 26b.
- the casing of the Bowden cable is also firmly attached to the active part 904. If the lever arm 901 by closing the front hood 500, it is pivoted counterclockwise and the pull cable 26 a is pulled out of the casing of the Bowden cable, while pivoting the lever arm 27 a of the pawl 27 on the mounting device 100.
- This pivoting is coupled with a rotation of the toothed segment 11 'in the sense of the figure parts 13 D and E and thus the reversal of the lifting element 4V.
- the main positions of the lever arm 901 during reversing show the figure parts 14 B, C and D.
- the front hood 500 activated and set up by the sensor is unlocked manually and opened further until the service position is approximate.
- the Bowden cable 26 is released by the reversing lever 27 a, which is controlled by the lever system 900.
- the switching pawl 27 continues to rotate counter-clockwise under the pretension of the tension spring 29 until the stop lever 27 c of the switching pawl comes into contact with the upper stop pin 11 'd of the toothed segment 11' (FIG. 13 D).
- the rotary knitting part 28 a detent pawl which is rotatably spring-loaded on the toothed segment 11 ', is opened or pushed back so that the pawl 27 can pass.
- the pushing back of the pawl 28 is limited by the lower stop bolt 11'e.
- the latch 28 moves against the large stop pin 1'a and is pushed into the toothing by this.
- the locking pawl 28 then engages with its locking lug 28 a in the locking opening 27 e of the switching pawl 27.
- the hood is then closed again manually for reversing.
- Base plate a front bevel
- Double pawl system a release pawl b hold pawl
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Superstructure Of Vehicle (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003108140 DE10308140B3 (de) | 2003-02-26 | 2003-02-26 | Vorrichtung zum Schutz von Personen bei einem Frontalaufprall auf ein Kraftfahrzeug |
DE10308140 | 2003-02-26 | ||
PCT/EP2004/001827 WO2004076245A1 (de) | 2003-02-26 | 2004-02-25 | Vorrichtung zum schutz von personen bei einem frontalaufprall auf ein kraftfahrzeug |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1562797A1 true EP1562797A1 (de) | 2005-08-17 |
Family
ID=32920618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04714303A Withdrawn EP1562797A1 (de) | 2003-02-26 | 2004-02-25 | Vorrichtung zum schutz von personen bei einem frontalaufprall auf ein kraftfahrzeug |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1562797A1 (de) |
DE (1) | DE10308140B3 (de) |
WO (1) | WO2004076245A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005024350A1 (de) * | 2005-05-27 | 2006-11-30 | Bayerische Motoren Werke Ag | Anordnung einer Frontklappe an einem Fahrzeug |
DE102005044079A1 (de) * | 2005-09-15 | 2007-03-22 | GM Global Technology Operations, Inc., Detroit | Karosserie für ein Kraftfahrzeug |
DE102005051657A1 (de) * | 2005-10-28 | 2007-05-03 | GM Global Technology Operations, Inc., Detroit | Pyrotechnischer Aktuator |
CN113137152A (zh) * | 2021-05-12 | 2021-07-20 | 厦门理工学院 | 一种发动机罩铰链和车辆 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2711339C3 (de) * | 1977-03-16 | 1979-09-06 | Hermann Prof. Dr.-Ing. 1000 Berlin Appel | Aufprallschutzvorrichtung für Fußgänger an einem Kraftfahrzeug |
DE2711338C3 (de) * | 1977-03-16 | 1981-10-01 | Hermann Prof. Dr.-Ing. 1000 Berlin Appel | Kraftfahrzeug mit Einrichtungen zum Dämpfen des Aufpralls eines Fußgängers |
DE2737876A1 (de) * | 1977-08-23 | 1979-03-08 | Volkswagenwerk Ag | Aufprallschutzvorrichtung |
DE2814107A1 (de) * | 1978-04-01 | 1979-10-04 | Volkswagenwerk Ag | Sicherheitseinrichtung zum schutz von fussgaengern |
DE2841315A1 (de) * | 1978-09-22 | 1980-04-10 | Volkswagenwerk Ag | Sicherheitseinrichtung zum schutz von fussgaengern |
DE19721565B4 (de) * | 1996-05-31 | 2006-10-05 | Volkswagen Ag | Sicherheitseinrichtung an einem Fahrzeug zum Schutz von Fußgängern |
DE19712961B4 (de) * | 1997-03-27 | 2009-07-09 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren betreffend eine Einrichtung zum Anheben einer Frontklappe an einem Fahrzeug |
DE20106478U1 (de) * | 2000-08-08 | 2001-10-11 | Trw Automotive Electron & Comp | Antrieb einer an einem Fahrzeug vorgesehenen Klappe und Fußgängerschutz an einem Kraftfahrzeug |
DE10108880B4 (de) * | 2001-02-23 | 2014-10-30 | Volkswagen Ag | Hubsystem |
-
2003
- 2003-02-26 DE DE2003108140 patent/DE10308140B3/de not_active Expired - Fee Related
-
2004
- 2004-02-25 WO PCT/EP2004/001827 patent/WO2004076245A1/de not_active Application Discontinuation
- 2004-02-25 EP EP04714303A patent/EP1562797A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2004076245A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004076245A1 (de) | 2004-09-10 |
DE10308140B3 (de) | 2004-09-30 |
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