Source: https://patents.google.com/patent/DE10034523B4/en
Timestamp: 2020-01-23 11:36:04
Document Index: 505253467

Matched Legal Cases: ['art 104', 'art 110', 'art 112', 'art 110', 'art 110', 'art 104', 'art 112', 'art 104', 'art 104', 'art 104', 'art 204', 'art 204']

DE10034523B4 - lifting system - Google Patents
DE10034523B4
DE10034523B4 DE10034523.9A DE10034523A DE10034523B4 DE 10034523 B4 DE10034523 B4 DE 10034523B4 DE 10034523 A DE10034523 A DE 10034523A DE 10034523 B4 DE10034523 B4 DE 10034523B4
DE10034523.9A
DE10034523A1 (en
Wilfried Schwant
2000-07-15 Application filed by Volkswagen AG filed Critical Volkswagen AG
2000-07-15 Priority to DE10034523.9A priority Critical patent/DE10034523B4/en
2002-01-24 Publication of DE10034523A1 publication Critical patent/DE10034523A1/en
2017-02-09 Application granted granted Critical
2017-02-09 Publication of DE10034523B4 publication Critical patent/DE10034523B4/en
2020-07-16 Anticipated expiration legal-status Critical
B60R21/38—Protecting non-occupants of a vehicle, e.g. pedestrians using means for lifting bonnets
E05B77/08—Arrangements for protection of pedestrians
Lifting system for a person as a personal protection system (12) in a motor vehicle (10) provided, displaceable hood (14), provided with a displacement of the hood (14) lifting spring (102, 202) and a Hubfederverriegelungsvorrichtung (108, 208), wherein the lifting system a return lock device (136, 138, 140, 144) with which restoring movement of the displaced hood (14) is limited, and wherein the lift spring lock device comprises a rotatably formed catch hook (114, 214) having a pin-like holding portion (126) and in a tensioned state of the lifting spring (102; 202) penetrates a retaining opening (128) formed in a retaining lug (106; 206) attached to the lifting spring longitudinal axis and secured to the hood (14), characterized in that the lifting system comprises a transmission ( 146, 148, 150, 152; 244, 248, 250, 252) with which the return locking device (136, 138, 140, 144) for releasing the return movement egung of the hood (14) is actuated and with which the Hubfederverriegelungsvorrichtung (108; 208) is lockable in a position in which the lifting spring (102, 202) is held in a tensioned state that for locking the Hubfederverriegelungsvorrichtung (108; 208) in the position in which the lifting spring (102, 202) in the tensioned state a rotatably mounted closer (158) is provided, which is in rotary connection with the catch hook (114; 214) via a force-transmitting spring (160) and which is rotatably actuable by means of the retaining lug (106; 206) attached to the hood (14) and in that the cover (158) rotates the catch hook (114;
The invention relates to a lifting system for a person as a personal protection in a motor vehicle according to the preamble of claim 1.
In practice, therefore, systems have been developed which, in the event of a collision, increase the distance of the hood from the engine block by displacing the hood. In this case, lifting systems are used, some of which have mechanical spring systems or airbag devices.
Out DE 197 21 565 A1 , which describes a reversible, mechanical lifting system, which is closest to the invention, it is known to make the lifting movement done by a front hood Aufstellfeder, wherein the front hood Aufstellfeder is arranged such that it surrounds a locking pin. The locking bolt is held in a cocked position of the front hood or bonnet Aufstellfeder by means of a lock bolt, which is displaceable by means of an electromagnetic or pyrotechnic unlocking against the pressure of a coil spring. A limitation of the stroke is carried out by a fishing hook, which can be latched in a case groove of the locking bolt.
In the DE 197 21 565 A1 described, generic lifting device is used at the same time as hood lock at the front, lower end of the hood of a car and should be tensioned by depressing the hood. This has the consequence that - should deformations on the hood are avoided - the bonnet Aufstellfeder can only be relatively soft and thus can only cause a low lifting speed of the hood. In addition, the effective operation of the lock bolt requires a complex construction.
Out DE 197 10 417 A1 Furthermore, a lifting system is known in which a gas spring is used to effect the lifting movement. The gas spring, which also serves to support the hood in the usual service operation, is arranged at the rear, upper end of the hood. A, zweigelenkig interconnected guide arms exhibiting holding rod in this case has at its connecting the two guide arms joint holding means. The holding means causes the hood does not open, but is raised when in the event of a collision, the holding means releases the hinge point. From DE 197 10 417 A1 known lifting device has the disadvantage that it is recoverable only with great effort.
From the DE 18 01 154 A is an unlockable latch for the cover of the engine and luggage compartment of motor vehicles known to take without reference to a personal protection system.
The invention has for its object to provide an improved lifting system and such a lifting system having personal protection system available.
The solution of this object is achieved according to the invention with the features of claim 1. Advantageous developments of the invention are disclosed in the dependent claims.
According to the invention it is provided that in a lifting system for a person provided as a personal protection system in a motor vehicle displaceable hood, with a provided for displacement in the hood lifting spring and a Hubfederverriegelungsvorrichtung the Hubfederverriegelungsvorrichtung has a rotatably mounted lock. The rotatably mounted barrier has the advantage of being able to absorb the highest forces in the locked state and also that only small forces are required for triggering, since only frictional and inertial forces must be overcome in order to trigger the lifting system. By using a rotatable lock, a quick release of the lifting system can be achieved.
According to a preferred embodiment, the lock engages a at least one rotary lever having power amplification system. By the at least one lever of the power amplification system is achieved that a high holding power is available, yet only low triggering forces to trigger the lifting system are required.
Preferably, the lifting spring is a helical spring made of spring steel. In such an embodiment can be achieved at low cost very high spring forces, with it being a further advantage that the system is simple and robust. If the lifting spring is a gas spring, can be realized in a simple way very large strokes.
According to a particularly preferred embodiment, the lifting system is characterized by a Hubwegbegrenzungsvorrichtung. By such Hubwegbegrenzungsvorrichtung prevents the hood under the influence of the lifting system absorbs an excessive kinetic energy and collisions with the hood at the end not larger injuries result as if the hood would have been arranged stationary.
A return limiting device arranged in the lifting system causes, in the event of an impact on the hood, the impact forces the lifting spring do not squeeze again and thereby reduce the lift or buffer distance.
According to the invention it is provided that a gear is provided for locking the Hubfederverriegelungsvorrichtung in a lifting spring in a tensioned state holding position. This gearbox makes it possible, despite the highest lifting spring stiffnesses and associated very short stroke times, to simply reset the lifting system after a release. In connection with the invention can therefore also speak of a reversible mechanical lifting system.
As essential transmission component is preferably a drawstring or a cable is provided. Thus, it can be achieved that the force required to return the lifting system to the tensioned state can be exerted on an ergonomically favorable position. A drawstring or a cable also facilitates the use of tensioning aids, for example the one arranged on a clamping shaft clamping motor or clamping lever, in particular in the manner of a torque wrench.
The advantages of the invention are particularly evident when a lifting system according to the invention is used in a personal protection system with a displaceable hood provided in a motor vehicle. They are particularly evident when the hood is arranged substantially horizontally or at an acute angle to the horizontal. If the hood, as provided according to an alternative preferred embodiment of the personal protection system, is arranged substantially perpendicular or at an acute angle to the vertical, an advantageous reduction in the severity of injuries to persons colliding with the motor vehicle is also achieved.
Further advantageous embodiments and modifications of the invention will become apparent from the dependent claims and from the description in conjunction with the drawings. Show it:
1 a front section of a car equipped with a personal protection system according to the invention,
2 an inventive, a lifting spring exhibiting lifting system according to a first embodiment in the locked position in a simplified representation.
3 the lifting system in 2 at the beginning of the tripping by actuation of a lifting magnet,
4 the lifting system in the 2 and 3 at the moment of release of the lifting spring,
5 the lifting system in the 2 to 4 at the moment of acting on a stroke-limiting device,
6 the lifting system in the 2 to 5 at the moment of acting on a resetting-limiting device,
7 the lifting system in the 2 to 6 after the end of an impact,
8th the lifting system in the 2 to 7 at the beginning of a provision,
9 the lifting system in the 2 to 8th at the moment just before locking the lifting system in the cocked position,
10 the lifting system in the 2 to 9 at the moment of a provision of a lock,
11 the lifting system in the 2 to 10 after completion of the lock,
12 an inventive lifting system according to a second embodiment in a position accordingly 6 .
13 the lifting system in 12 at the moment of commencement of decoupling of the lifting spring from a frame structure of a motor vehicle at the moment of impact of a colliding body,
14 the lifting system in the 12 and 13 at the beginning of the provision.
The in 1 shown front section of a car 10 has a personal protection system 12 with a hood 14 , a controller 16 and two lifting systems 18 . 20 on which in the area of the outer edges of the hood 14 on the longitudinal sides substantially at the rear in the direction of travel end of the hood 14 are arranged. Alternatively to the arrangement of two lifting systems 18 . 20 at the rear in the direction of travel can also be one or more lifting systems 22 in the direction of travel, front end of the hood 14 be arranged.
The lifting systems 18 . 20 respectively. 22 be in the event of a collision of a pedestrian on the car 10 due to one of a sensor bar 24 sent signal from the controller 16 activated and lift the hood 14 about 5 to 15 cm, so that below the hood 14 a buffer space is created, in which the bonnet 14 can deform without being obstructed by an engine block on the deformation. This allows the impact of a person on the hood 14 attenuate injury limitation.
The lifting systems 18 . 20 respectively. 22 can according to a first embodiment as by the 2 to 11 explained or according to a second preferred embodiment as by the 12 to 14 be explained explained.
For a lifting system 100 according to the first embodiment in the 2 to 11 Hereinafter, reference numerals beginning with the reference character 100 used. Since lifting systems according to the second embodiment of Hubsystemen 100 according to the first embodiment only differ in details, are for the lifting system 200 according to the second embodiment in the 12 to 14 Reference numerals used with the reference numeral 200 kick off. Parts of the lifting system 200 according to the second embodiment, the parts of the lifting system 100 correspond to the first embodiment, are to 100 increased compared to the first embodiment. Reference is made to the description in connection with the first embodiment in this respect.
The lifting system 100 according to the first embodiment engages with a lifting spring 102 , on the hood 14 whose mass is due to a mass block 14a is clarified. The lifting spring 102 which is made of spring steel as a coil spring, is supported below the hood 14 on a body structure part 104 from.
In the in 2 shown locked position is the lifting spring 102 from a holding tab 106 kept under tension, which on the one hand on the hood 14 attacks and on the other hand at its lower, the bonnet 14 opposite end of a Hubfederverriegelungsvorrichtung 108 is held. The Hubfederverriegelungsvorrichtung 108 has a hold / release part 110 and a return part 112 on.
The hold / release part 110 consists essentially of a part of a power amplification system of a lever arm-like catch hook 114 , a rotatably mounted lock 116 and a lifting magnet 118 with which the lock 116 against the pressure of a weak stabilizing spring 120 around a blocking axis of rotation 122 is rotatable. The locking rotational axis 122 runs below or behind the hood 14 essentially parallel to the base of the motor vehicle 10 and is laterally offset from the longitudinal axis of the lifting spring 102 or the retaining tab 106 ,
The fishing hook 114 Its as a catch hook rotation axis 124 designated axis of rotation in the course of the longitudinal axis of the lifting spring 102 and the substantially extending on the Hubfederlängsachse retaining tab 106 is arranged and this intersects at an angle of about 90 °, has a holding portion 126 on, which is formed like a pin and one in the retaining tab 106 trained holding opening 128 penetrates. The holding section 126 has a holding surface 130 on, opposite to the longitudinal axis of the retaining tab 106 is inclined so that at one on the retaining tab 106 acting, the retaining tab 106 from the fishing hook axis 124 removing traction the retaining tab 106 endeavors from the holding section 126 slipping. Furthermore, the fishing hook 114 a barrier investment area 132 on, with which the catch hook 114 in the locked state at the lock 116 supported so that the support force through the locking axis of rotation 122 runs. Because of this spatial arrangement can be virtually arbitrarily high, on the retaining tab 106 acting tensile forces from the holding / triggering part 110 the Hubfederverriegelungsvorrichtung 108 being held.
The triggering of the lifting system 100 is through the 3 to 7 explained. Is due to a sensor signal of the sensor bar 24 the solenoid 118 from the controller 16 activated, causes the pulling force of the solenoid 118 a rotation of the lock 116 as indicated by the arrow A in 3 indicated. This will be the barrier investment area 132 free.
One on the retaining tab 106 acting tensile force in 4 with the letter F is indicated and that from the over the bonnet 14 acting spring force of the lifting spring 102 results, causes the catch hook 114 due to its inclined holding surface 130 from the retaining tab 106 slips off, while being turned and the retaining tab 106 releases.
As in 5 shown causes the release of the retaining tab 106 in that the lifting spring 102 can expand explosively along its longitudinal axis and the hood 14 ejected from underlying engine parts.
The upward movement of the hood 14 , with which these from underlying vehicle parts, in particular the body structure part 104 , removed, only ends with the action of a Hubwegbegrenzungsvorrichtung 134 which is an element of the return part 112 is. The Hubwegbegrenzungsvorrichtung 134 has one on the hood 14 rotatable or bendable attached tab or backdrop 136 in, in the backdrop opening 138 which has in a side view substantially the shape of the letter J, one on the body structure part 104 firmly attached pin 140 is slidably mounted. In case of the upward movement of the hood 14 slides the pin 140 in the backdrop opening 138 until he first has an inclined surface 142 (please refer 2 ) slides and then at the bottom of the gate opening 138 comes to the plant. Supported by an auxiliary spring, the one with F 2 in 5 shown pressure exerted, it becomes the backdrop 136 turned.
Now suggests, as in 6 clarifies a body on the hood 14 on, the in. acts 6 shown force F on the hood 14 , Depending on its size, this force F could be the lifting spring 102 partially or completely compress. In the lifting system 100 According to the first embodiment, however, the return movement of the hood 14 through the scenery 136 limited because of the pin 140 in the short thigh 144 the backdrop opening 138 very quickly comes to the plant. As a result, even in the case of an impact with a high pulse under or behind the hood remains 14 a sufficient buffer space with a height of about 5 to 15 cm maintained. In the scenery 136 are deformation openings 145 ( 6 ), which in case of a hard impact of a body on the hood 14 cause a defined deformation and thus destruction of impact energy.
After the impact, the in 7 shown situation. Is the vehicle 10 After the collision is still running, the lifting system can 100 starting from the situation in 7 be reset.
To reset is in the lifting system 100 according to the first embodiment, as in 8th shown, a tensioning motor (not shown) operated, which is a tensioning shaft 146 rotates. Instead of the tensioning motor, a tensioning lever can also be provided. By turning the tensioning shaft 146 becomes one on the tensioning shaft 146 arranged eccentric pin 148 shifted, which has a tensioning backdrop 150 a tensile force on a drawstring 152 exercises. The pulling direction Z 1 of the drawstring 152 is by pulleys 154 . 156 in terms of the scenery 136 oriented so that the tieback 152 which is on the backdrop 136 attacks, over this the bonnet 14 against the force of the lifting spring 102 towards the body structure part 104 emotional. The pin slides 140 over the inclined surface 142 , creating the backdrop 136 is rotated against the force of the auxiliary spring and the pin 140 again in the long leg of the gate opening 138 emotional.
Will the tension shaft 146 , as in 9 shown, further rotated, causes the train thereby applied to the drawstring 152 in that the lifting spring 102 completely or almost completely compressed. As a result, the retaining tab dives 106 far as in the body structure part 104 that they have a rotatably mounted closer 158 operated, which via a force-transmitting spring 160 the fishing hook 114 turns and with its holding section 126 through the holding hole 128 the catch strap 106 plugged.
As in 10 shown, causes the rotation of the clamping shaft 146 finally, that the fishing hook 114 completely in the holding opening 128 dips and the lock 116 under the action of the stabilizing spring 120 when the solenoid is switched off 118 is rotated so that they catch the hook 114 at the barrier contact surface 132 supported.
Another turn of the tensioning shaft 146 finally has the consequence that on the tieback 152 applied traction disappears and under the action of the lifting spring 102 the retaining tab 106 and the scenery 136 move back so far that the retaining tab 106 on the fishing hook 114 comes to the plant and is held by this. At this point it should be mentioned that the tensioning scenery 150 a slot 162 has, so that by the drawstring 152 and the tensioning shaft 146 a triggering of the lifting system 100 not hindered.
The lifting system 200 according to the second embodiment in the 12 to 14 is different from the lifting system 100 according to the first embodiment characterized in that a decoupling of the lifting spring 202 from the body structure part 204 Automatically takes place when on the hood 14 one in 12 as F A designated force acts. By such a force F A is a on the backdrop 236 mounted ram 270 operated, which is provided with an actuating lever eccentric 271 turns and with that a flap 272 releases, through which the lifting spring 202 , as in 13 shown in the body structure part 204 can dive.
lifting spring
Body structure part
retaining tab
Hubfederverriegelungsvorrichtung
Hold / release part
stabilizing spring
Lock rotation axis
Hook axis
holding section
holding opening
Lock contact surface
Hubwegbegrenzungsvorrichtung
backdrop opening
Short thigh
deformation openings
Permanent placement spring
Karroseriestrukturteil
Lifting system for a person protection system ( 12 ) in a motor vehicle ( 10 ) provided, displaceable hood ( 14 ), with a for the displacement of the hood ( 14 ) provided lifting spring ( 102 ; 202 ) and a Hubfederverriegelungsvorrichtung ( 108 ; 208 ), wherein the lifting system comprises a reset locking device ( 136 . 138 ; 140 . 144 ), with which a return movement of the displaced hood ( 14 ) is limited, and wherein the Hubfederverriegelungsvorrichtung a rotatably formed fishing hook ( 114 ; 214 ) having a pin-like holding portion ( 126 ) and in a tensioned state of the lifting spring ( 102 ; 202 ) in a, on the Hubfederlängsachse extending, on the hood ( 14 ) attached retaining tab ( 106 ; 206 ) formed retaining opening ( 128 ) penetrates, characterized in that the lifting system a transmission ( 146 . 148 . 150 . 152 ; 244 . 248 . 250 . 252 ), with which the reset locking device ( 136 . 138 . 140 . 144 ) to release the return movement of the hood ( 14 ) is actuated and with which the Hubfederverriegelungsvorrichtung ( 108 ; 208 ) is lockable in a position in which the lifting spring ( 102 ; 202 ) is held in a tensioned state that for locking the Hubfederverriegelungsvorrichtung ( 108 ; 208 ) in the position in which the lifting spring ( 102 . 202 ) is held in the tensioned state, a rotatably mounted closer ( 158 ) provided via a force-transmitting spring ( 160 ) in rotary connection with the catch hook ( 114 ; 214 ) and by means of the hood ( 14 ) attached retaining tab ( 106 ; 206 ) is drehbetätigbar, and that in a hood return movement of the closer ( 158 ) via the force-mediation spring ( 160 ) the catch hook ( 114 ; 214 ) and with its holding section ( 126 ) through the retaining opening ( 128 ) of the catch tab ( 106 ) plugged.
Lifting system according to claim 1, characterized in that the transmission ( 146 . 148 . 150 . 152 ; 244 . 248 . 250 . 252 ) a drawstring ( 152 ; 252 ) or a cable.
Lifting system according to claim, characterized in that the drawstring ( 152 ; 252 ) on a tensioning shaft ( 146 ; 246 ) attacks.
Lifting system according to claim 3, characterized in that on the tensioning shaft ( 146 ; 246 ) of the drawstring ( 152 ; 252 ) attacks a tensioning motor.
Lifting system according to claim 4, characterized in that on the tensioning shaft ( 146 ; 246 ) of the drawstring a clamping lever can be arranged.
Lifting system according to one of the preceding claims, characterized in that the Hubfederverriegelungsvorrichtung ( 108 ; 208 ) a rotatably mounted lock ( 116 ; 216 ) having.
Lifting system according to claim 6, characterized in that the lock ( 116 ; 216 ) on the fishing hook ( 114 ; 214 ) attacks.
Lifting system according to claim 7, characterized in that the axis of rotation ( 124 ; 224 ) of the catch hook ( 114 ; 214 ) of the power amplification system substantially in the course of the longitudinal axis of the lifting spring ( 102 ; 202 ) is arranged.
Lifting system according to one of claims 6 to 8, characterized in that the lifting spring ( 102 ; 202 ) is a spring made of spring steel coil spring.
Lifting system according to one of claims 6 to 8, characterized in that the lifting spring is a gas pressure spring.
Lifting system according to one of claims 6 to 10, characterized in that a Hubwegbegrenzungsvorrichtung ( 134 ; 234 ) is provided.
Lifting system according to one of the preceding claims, characterized in that the Hood ( 14 ) is arranged substantially horizontally or at an acute angle to the horizontal.
Lifting system according to one of claims 1 to 11, characterized in that the hood ( 14 ) is arranged substantially perpendicular or at an acute angle to the vertical.
DE10034523.9A 2000-07-15 2000-07-15 lifting system Expired - Fee Related DE10034523B4 (en)
DE10034523.9A DE10034523B4 (en) 2000-07-15 2000-07-15 lifting system
DE10034523A1 DE10034523A1 (en) 2002-01-24
DE10034523B4 true DE10034523B4 (en) 2017-02-09
ID=7649093
DE10034523.9A Expired - Fee Related DE10034523B4 (en) 2000-07-15 2000-07-15 lifting system
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2002-01-24 OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
2007-06-06 8120 Willingness to grant licences paragraph 23
2007-06-21 8110 Request for examination paragraph 44
2011-12-23 R016 Response to examination communication
2013-12-16 R079 Amendment of ipc main class
Free format text: PREVIOUS MAIN CLASS: E05B0065190000
Ipc: E05B0077080000
2014-02-06 R079 Amendment of ipc main class
2014-08-29 R016 Response to examination communication
2016-09-30 R016 Response to examination communication
2016-10-25 R018 Grant decision by examination section/examining division
2017-11-10 R020 Patent grant now final